Adding upstream version 115.8.0esr.upstream/115.8.0esr

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

324 files changed, 31879 insertions, 0 deletions

diff --git a/l10n-en-GB/browser/branding/official/brand.ftl b/l10n-en-GB/browser/branding/official/brand.ftl
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+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+## Firefox Brand
+##
+## Firefox must be treated as a brand, and kept in English.
+## It cannot be:
+## - Declined to adapt to grammatical case.
+## - Transliterated.
+## - Translated.
+##
+## Reference: https://www.mozilla.org/styleguide/communications/translation/
+
+## Firefox and Mozilla Brand
+##
+## Firefox and Mozilla must be treated as a brand.
+##
+## They cannot be:
+## - Transliterated.
+## - Translated.
+##
+## Declension should be avoided where possible, leaving the original
+## brand unaltered in prominent UI positions.
+##
+## For further details, consult:
+## https://mozilla-l10n.github.io/styleguides/mozilla_general/#brands-copyright-and-trademark
+
+-brand-shorter-name = Firefox
+-brand-short-name = Firefox
+-brand-shortcut-name = Firefox
+
+-brand-full-name = Mozilla Firefox
+# This brand name can be used in messages where the product name needs to
+# remain unchanged across different versions (Nightly, Beta, etc.).
+-brand-product-name = Firefox
+-vendor-short-name = Mozilla
+trademarkInfo = Firefox and the Firefox logos are trademarks of the Mozilla Foundation.
diff --git a/l10n-en-GB/browser/branding/official/brand.properties b/l10n-en-GB/browser/branding/official/brand.properties
new file mode 100644
index 0000000000..9d6a612125
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@@ -0,0 +1,8 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+brandShorterName=Firefox
+brandShortName=Firefox
+brandFullName=Mozilla Firefox
+
diff --git a/l10n-en-GB/browser/browser/aboutDialog.ftl b/l10n-en-GB/browser/browser/aboutDialog.ftl
new file mode 100644
index 0000000000..2080ee9873
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+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+aboutDialog-title =
+    .title = About { -brand-full-name }
+
+releaseNotes-link = What’s new
+
+update-checkForUpdatesButton =
+    .label = Check for updates
+    .accesskey = C
+
+update-updateButton =
+    .label = Restart to Update { -brand-shorter-name }
+    .accesskey = R
+
+update-checkingForUpdates = Checking for updates…
+
+## Variables:
+##   $transfer (string) - Transfer progress.
+
+settings-update-downloading = <img data-l10n-name="icon"/>Downloading update — <label data-l10n-name="download-status">{ $transfer }</label>
+aboutdialog-update-downloading = Downloading update — <label data-l10n-name="download-status">{ $transfer }</label>
+
+##
+
+update-applying = Applying update…
+
+update-failed = Update failed. <label data-l10n-name="failed-link">Download the latest version</label>
+update-failed-main = Update failed. <a data-l10n-name="failed-link-main">Download the latest version</a>
+
+update-adminDisabled = Updates disabled by your system administrator
+update-noUpdatesFound = { -brand-short-name } is up to date
+aboutdialog-update-checking-failed = Failed to check for updates.
+update-otherInstanceHandlingUpdates = { -brand-short-name } is being updated by another instance
+
+## Variables:
+##   $displayUrl (String): URL to page with download instructions. Example: www.mozilla.org/firefox/nightly/
+
+aboutdialog-update-manual-with-link = Updates available at <label data-l10n-name="manual-link">{ $displayUrl }</label>
+settings-update-manual-with-link = Updates available at <a data-l10n-name="manual-link">{ $displayUrl }</a>
+
+update-unsupported = You can not perform further updates on this system. <label data-l10n-name="unsupported-link">Learn more</label>
+
+update-restarting = Restarting…
+
+update-internal-error2 = Unable to check for updates due to internal error. Updates available at <label data-l10n-name="manual-link">{ $displayUrl }</label>
+
+##
+
+# Variables:
+#   $channel (String): description of the update channel (e.g. "release", "beta", "nightly" etc.)
+aboutdialog-channel-description = You are currently on the <label data-l10n-name="current-channel">{ $channel }</label> update channel.
+
+warningDesc-version = { -brand-short-name } is experimental and may be unstable.
+
+aboutdialog-help-user = { -brand-product-name } Help
+aboutdialog-submit-feedback = Submit Feedback
+
+community-exp = <label data-l10n-name="community-exp-mozillaLink">{ -vendor-short-name }</label> is a <label data-l10n-name="community-exp-creditsLink">global community</label> working together to keep the Web open, public and accessible to all.
+
+community-2 = { -brand-short-name } is designed by <label data-l10n-name="community-mozillaLink">{ -vendor-short-name }</label>, a <label data-l10n-name="community-creditsLink">global community</label> working together to keep the Web open, public and accessible to all.
+
+helpus = Want to help? <label data-l10n-name="helpus-donateLink">Make a donation</label> or <label data-l10n-name="helpus-getInvolvedLink">get involved!</label>
+
+bottomLinks-license = Licensing Information
+bottomLinks-rights = End-User Rights
+bottomLinks-privacy = Privacy Policy
+
+# Example of resulting string: 66.0.1 (64-bit)
+# Variables:
+#   $version (String): version of Firefox, e.g. 66.0.1
+#   $bits (Number): bits of the architecture (32 or 64)
+aboutDialog-version = { $version } ({ $bits }-bit)
+
+# Example of resulting string: 66.0a1 (2019-01-16) (64-bit)
+# Variables:
+#   $version (String): version of Firefox for Nightly builds, e.g. 66.0a1
+#   $isodate (String): date in ISO format, e.g. 2019-01-16
+#   $bits (Number): bits of the architecture (32 or 64)
+aboutDialog-version-nightly = { $version } ({ $isodate }) ({ $bits }-bit)
diff --git a/l10n-en-GB/browser/browser/aboutLogins.ftl b/l10n-en-GB/browser/browser/aboutLogins.ftl
new file mode 100644
index 0000000000..f501440362
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+++ b/l10n-en-GB/browser/browser/aboutLogins.ftl
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+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+# NOTE: New strings should use the about-logins- prefix.
+
+about-logins-page-title = Logins & Passwords
+about-logins-login-filter =
+    .placeholder = Search Logins
+    .key = F
+create-new-login-button =
+    .title = Create new login
+about-logins-page-title-name = Passwords
+about-logins-login-filter2 =
+    .placeholder = Search Passwords
+    .key = F
+create-login-button =
+    .title = Add password
+fxaccounts-sign-in-text = Get your passwords on your other devices
+fxaccounts-sign-in-sync-button = Sign in to synchronise
+fxaccounts-avatar-button =
+    .title = Manage account
+
+## The ⋯ menu that is in the top corner of the page
+
+menu =
+    .title = Open menu
+# This menuitem is only visible on Windows and macOS
+about-logins-menu-menuitem-import-from-another-browser = Import from Another Browser…
+about-logins-menu-menuitem-import-from-a-file = Import from a File…
+about-logins-menu-menuitem-export-logins = Export Logins…
+about-logins-menu-menuitem-remove-all-logins = Remove All Logins…
+about-logins-menu-menuitem-export-logins2 = Export Passwords…
+about-logins-menu-menuitem-remove-all-logins2 = Remove All Passwords…
+menu-menuitem-preferences =
+    { PLATFORM() ->
+        [windows] Options
+       *[other] Preferences
+    }
+about-logins-menu-menuitem-help = Help
+
+## Login List
+
+login-list =
+    .aria-label = Logins matching search query
+# Variables
+#   $count (number) - Number of logins
+login-list-count =
+    { $count ->
+        [one] { $count } login
+       *[other] { $count } logins
+    }
+# Variables
+#   $count (number) - Number of filtered logins
+#   $total (number) - Total number of logins
+login-list-filtered-count =
+    { $total ->
+        [one] { $count } of { $total } login
+       *[other] { $count } of { $total } logins
+    }
+# Variables
+#   $count (number) - Number of logins
+login-list-count2 =
+    { $count ->
+        [one] { $count } password
+       *[other] { $count } passwords
+    }
+# Variables
+#   $count (number) - Number of filtered logins
+#   $total (number) - Total number of logins
+login-list-filtered-count2 =
+    { $total ->
+        [one] { $count } of { $total } password
+       *[other] { $count } of { $total } passwords
+    }
+login-list-sort-label-text = Sort by:
+login-list-name-option = Name (A-Z)
+login-list-name-reverse-option = Name (Z-A)
+login-list-username-option = Username (A-Z)
+login-list-username-reverse-option = Username (Z-A)
+about-logins-login-list-alerts-option = Alerts
+login-list-last-changed-option = Last Modified
+login-list-last-used-option = Last Used
+login-list-intro-title = No logins found
+login-list-intro-title2 = No passwords saved
+login-list-intro-description = When you save a password in { -brand-product-name }, it will show up here.
+about-logins-login-list-empty-search-title = No logins found
+about-logins-login-list-empty-search-title2 = No passwords found
+about-logins-login-list-empty-search-description = There are no results matching your search.
+login-list-item-title-new-login = New Login
+login-list-item-subtitle-new-login = Enter your login credentials
+login-list-item-title-new-login2 = Add password
+login-list-item-subtitle-missing-username = (no username)
+about-logins-list-item-breach-icon =
+    .title = Breached web site
+about-logins-list-item-vulnerable-password-icon =
+    .title = Vulnerable password
+about-logins-list-section-breach = Breached web sites
+about-logins-list-section-vulnerable = Vulnerable passwords
+about-logins-list-section-nothing = No alert
+about-logins-list-section-today = Today
+about-logins-list-section-yesterday = Yesterday
+about-logins-list-section-week = Last 7 days
+
+## Introduction screen
+
+about-logins-login-intro-heading-logged-out2 = Looking for your saved logins? Turn on synchronisation or import them.
+about-logins-login-intro-heading-logged-in = No synchronised logins found.
+login-intro-description = If you saved your logins to { -brand-product-name } on a different device, here’s how to get them here:
+login-intro-instructions-fxa = Create or sign in to your { -fxaccount-brand-name(capitalization: "sentence") } on the device where your logins are saved.
+about-logins-login-intro-heading-message = Save your passwords to a safe spot
+login-intro-description2 = All passwords you save to { -brand-product-name } are encrypted. Plus, we watch out for breaches and alert you if you’re affected. <a data-l10n-name="breach-alert-link">Learn more</a>
+login-intro-instructions-fxa2 = Create or sign in to your account on the device where your logins are saved.
+login-intro-instructions-fxa-settings = Go to Settings > Sync > Turn on synchronisation… Select the Logins and passwords checkbox.
+login-intro-instructions-fxa-passwords-help = Visit <a data-l10n-name="passwords-help-link">passwords support</a> for more help.
+about-logins-intro-browser-only-import = If your logins are saved in another browser, you can <a data-l10n-name="import-link">import them into { -brand-product-name }</a>
+about-logins-intro-import2 = If your logins are saved outside of { -brand-product-name }, you can <a data-l10n-name="import-browser-link">import them from another browser</a> or <a data-l10n-name="import-file-link">from a file</a>
+about-logins-intro-import3 = Select the plus sign button above to add a password now. You can also <a data-l10n-name="import-browser-link">import passwords from another browser</a> or <a data-l10n-name="import-file-link">from a file</a>.
+
+## Login
+
+login-item-new-login-title = Create New Login
+# Header for adding a password
+about-logins-login-item-new-login-title = Add password
+login-item-edit-button = Edit
+about-logins-login-item-remove-button = Remove
+login-item-origin-label = Web site address
+login-item-tooltip-message = Make sure this matches the exact address of the web site where you log in.
+about-logins-origin-tooltip2 = Enter the full address and make sure it’s an exact match for where you sign in.
+# Variables
+#   $webTitle (String) - Website title of the password being changed.
+about-logins-edit-password-tooltip = Make sure you’re saving your current password for this site. Changing the password here does not change it with { $webTitle }.
+about-logins-add-password-tooltip = Make sure you’re saving your current password for this site.
+login-item-origin =
+    .placeholder = https://www.example.com
+login-item-username-label = Username
+about-logins-login-item-username =
+    .placeholder = (no username)
+login-item-copy-username-button-text = Copy
+login-item-copied-username-button-text = Copied!
+login-item-password-label = Password
+login-item-password-reveal-checkbox =
+    .aria-label = Show password
+login-item-copy-password-button-text = Copy
+login-item-copied-password-button-text = Copied!
+login-item-save-changes-button = Save Changes
+about-logins-login-item-save-changes-button = Save
+login-item-save-new-button = Save
+login-item-cancel-button = Cancel
+
+## The date is displayed in a timeline showing the password evolution.
+## A label is displayed under the date to describe the type of change.
+## (e.g. updated, created, etc.)
+
+# Variables
+#   $datetime (date) - Event date
+login-item-timeline-point-date = { DATETIME($datetime, day: "numeric", month: "short", year: "numeric") }
+login-item-timeline-action-created = Created
+login-item-timeline-action-updated = Updated
+login-item-timeline-action-used = Used
+
+## OS Authentication dialog
+
+about-logins-os-auth-dialog-caption = { -brand-full-name }
+
+## The macOS strings are preceded by the operating system with "Firefox is trying to "
+## and includes subtitle of "Enter password for the user "xxx" to allow this." These
+## notes are only valid for English. Please test in your respected locale.
+
+# This message can be seen when attempting to edit a login in about:logins on Windows.
+about-logins-edit-login-os-auth-dialog-message-win = To edit your login, enter your Windows login credentials. This helps protect the security of your accounts.
+# This message can be seen when attempting to edit a login in about:logins
+# On MacOS, only provide the reason that account verification is needed. Do not put a complete sentence here.
+about-logins-edit-login-os-auth-dialog-message-macosx = edit the saved login
+# This message can be seen when attempting to edit a login in about:logins on Windows.
+about-logins-edit-login-os-auth-dialog-message2-win = To edit your password, enter your Windows login credentials. This helps protect the security of your accounts.
+# This message can be seen when attempting to edit a login in about:logins
+# On MacOS, only provide the reason that account verification is needed. Do not put a complete sentence here.
+about-logins-edit-login-os-auth-dialog-message2-macosx = edit the saved password
+# This message can be seen when attempting to reveal a password in about:logins on Windows.
+about-logins-reveal-password-os-auth-dialog-message-win = To view your password, enter your Windows login credentials. This helps protect the security of your accounts.
+# This message can be seen when attempting to reveal a password in about:logins
+# On MacOS, only provide the reason that account verification is needed. Do not put a complete sentence here.
+about-logins-reveal-password-os-auth-dialog-message-macosx = reveal the saved password
+# This message can be seen when attempting to copy a password in about:logins on Windows.
+about-logins-copy-password-os-auth-dialog-message-win = To copy your password, enter your Windows login credentials. This helps protect the security of your accounts.
+# This message can be seen when attempting to copy a password in about:logins
+# On MacOS, only provide the reason that account verification is needed. Do not put a complete sentence here.
+about-logins-copy-password-os-auth-dialog-message-macosx = copy the saved password
+# This message can be seen when attempting to export a password in about:logins on Windows.
+about-logins-export-password-os-auth-dialog-message-win = To export your logins, enter your Windows login credentials. This helps protect the security of your accounts.
+# This message can be seen when attempting to export a password in about:logins
+# On MacOS, only provide the reason that account verification is needed. Do not put a complete sentence here.
+about-logins-export-password-os-auth-dialog-message-macosx = export saved logins and passwords
+# This message can be seen when attempting to export a password in about:logins on Windows.
+about-logins-export-password-os-auth-dialog-message2-win = To export your passwords, enter your Windows login credentials. This helps protect the security of your accounts.
+# This message can be seen when attempting to export a password in about:logins
+# On MacOS, only provide the reason that account verification is needed. Do not put a complete sentence here.
+about-logins-export-password-os-auth-dialog-message2-macosx = export saved passwords
+
+## Primary Password notification
+
+about-logins-primary-password-notification-message = Please enter your Primary Password to view saved logins & passwords
+master-password-reload-button =
+    .label = Log in
+    .accesskey = L
+
+## Dialogs
+
+confirmation-dialog-cancel-button = Cancel
+confirmation-dialog-dismiss-button =
+    .title = Cancel
+about-logins-confirm-remove-dialog-title = Remove this login?
+confirm-delete-dialog-message = This action cannot be undone.
+# Title for modal to confirm the removal of one saved password
+about-logins-confirm-delete-dialog-title = Remove password?
+# Message for modal to confirm the removal of one saved password
+about-logins-confirm-delete-dialog-message = You cannot undo this action.
+about-logins-confirm-remove-dialog-confirm-button = Remove
+
+## Variables
+##   $count (number) - Number of items
+
+about-logins-confirm-remove-all-dialog-confirm-button-label =
+    { $count ->
+        [1] Remove
+       *[other] Remove All
+    }
+about-logins-confirm-remove-all-dialog-checkbox-label =
+    { $count ->
+        [1] Yes, remove this login
+       *[other] Yes, remove these logins
+    }
+about-logins-confirm-remove-all-dialog-title =
+    { $count ->
+        [one] Remove { $count } login?
+       *[other] Remove all { $count } logins?
+    }
+about-logins-confirm-remove-all-dialog-message =
+    { $count ->
+        [1] This will remove the login you’ve saved to { -brand-short-name } and any breach alerts that appear here. You won’t be able to undo this action.
+       *[other] This will remove the logins you’ve saved to { -brand-short-name } and any breach alerts that appear here. You won’t be able to undo this action.
+    }
+about-logins-confirm-remove-all-sync-dialog-title =
+    { $count ->
+        [one] Remove { $count } login from all devices?
+       *[other] Remove all { $count } logins from all devices?
+    }
+about-logins-confirm-remove-all-sync-dialog-message =
+    { $count ->
+        [1] This will remove the login you’ve saved to { -brand-short-name } on all devices synced to your { -fxaccount-brand-name }. This will also remove breach alerts that appear here. You won’t be able to undo this action.
+       *[other] This will remove all logins you’ve saved to { -brand-short-name } on all devices synced to your { -fxaccount-brand-name }. This will also remove breach alerts that appear here. You won’t be able to undo this action.
+    }
+about-logins-confirm-remove-all-sync-dialog-message2 =
+    { $count ->
+        [1] This will remove the login you’ve saved to { -brand-short-name } on all devices synchronised to your account. This will also remove breach alerts that appear here. You won’t be able to undo this action.
+       *[other] This will remove all logins you’ve saved to { -brand-short-name } on all devices synchronised to your account. This will also remove breach alerts that appear here. You won’t be able to undo this action.
+    }
+# Checkbox for modal to confirm the removal of saved passwords
+about-logins-confirm-remove-all-dialog-checkbox-label2 =
+    { $count ->
+        [1] Yes, remove password
+       *[other] Yes, remove passwords
+    }
+# Title for modal to confirm the removal of all saved passwords when user is NOT synced
+about-logins-confirm-remove-all-dialog-title2 =
+    { $count ->
+        [one] Remove { $count } password?
+       *[other] Remove all { $count } passwords?
+    }
+# Message for modal to confirm the removal of saved passwords when user is NOT synced
+about-logins-confirm-remove-all-dialog-message2 =
+    { $count ->
+        [1] This will remove the password saved to { -brand-short-name } and any breach alerts. You cannot undo this action.
+       *[other] This will remove the passwords saved to { -brand-short-name } and any breach alerts. You cannot undo this action.
+    }
+# Title for modal to confirm the removal of all saved passwords when user IS SYNCED
+about-logins-confirm-remove-all-sync-dialog-title2 =
+    { $count ->
+        [one] Remove { $count } password from all devices?
+       *[other] Remove all { $count } passwords from all devices?
+    }
+# Message for modal to confirm the removal of saved passwords when user IS synced.
+about-logins-confirm-remove-all-sync-dialog-message3 =
+    { $count ->
+        [1] This will remove the passwords saved to { -brand-short-name } on all your synchronised devices. This will also remove any breach alerts that appear here. You cannot undo this action.
+       *[other] This will remove all passwords saved to { -brand-short-name } on all your synced devices. This will also remove any breach alerts that appear here. You cannot undo this action.
+    }
+
+##
+
+about-logins-confirm-export-dialog-title = Export logins and passwords
+about-logins-confirm-export-dialog-message = Your passwords will be saved as readable text (e.g., BadP@ssw0rd) so anyone who can open the exported file can view them.
+about-logins-confirm-export-dialog-confirm-button = Export…
+about-logins-confirm-export-dialog-title2 = A note about exporting passwords
+about-logins-confirm-export-dialog-message2 =
+    When you export, your passwords are saved to a file with readable text.
+    When you’re done using the file, we recommend deleting it so others who use this device can’t see your passwords.
+about-logins-confirm-export-dialog-confirm-button2 = Continue with export
+about-logins-alert-import-title = Import Complete
+about-logins-alert-import-message = View detailed Import Summary
+confirm-discard-changes-dialog-title = Discard unsaved changes?
+confirm-discard-changes-dialog-message = All unsaved changes will be lost.
+confirm-discard-changes-dialog-confirm-button = Discard
+
+## Breach Alert notification
+
+about-logins-breach-alert-title = Web Site Breach
+breach-alert-text = Passwords were leaked or stolen from this web site since you last updated your login details. Change your password to protect your account.
+about-logins-breach-alert-date = This breach occurred on { DATETIME($date, day: "numeric", month: "long", year: "numeric") }
+# Variables:
+#   $hostname (String) - The hostname of the website associated with the login, e.g. "example.com"
+about-logins-breach-alert-link = Go to { $hostname }
+
+## Vulnerable Password notification
+
+about-logins-vulnerable-alert-title = Vulnerable Password
+about-logins-vulnerable-alert-text2 = This password has been used on another account that was likely in a data breach. Reusing credentials puts all your accounts at risk. Change this password.
+# Variables:
+#   $hostname (String) - The hostname of the website associated with the login, e.g. "example.com"
+about-logins-vulnerable-alert-link = Go to { $hostname }
+about-logins-vulnerable-alert-learn-more-link = Learn more
+
+## Error Messages
+
+# This is an error message that appears when a user attempts to save
+# a new login that is identical to an existing saved login.
+# Variables:
+#   $loginTitle (String) - The title of the website associated with the login.
+about-logins-error-message-duplicate-login-with-link = An entry for { $loginTitle } with that username already exists. <a data-l10n-name="duplicate-link">Go to existing entry?</a>
+# This is a generic error message.
+about-logins-error-message-default = An error occurred while trying to save this password.
+
+## Login Export Dialog
+
+# Title of the file picker dialog
+about-logins-export-file-picker-title = Export Logins File
+# The default file name shown in the file picker when exporting saved logins.
+# This must end in .csv
+about-logins-export-file-picker-default-filename = logins.csv
+# Title of the file picker dialog
+about-logins-export-file-picker-title2 = Export Passwords from { -brand-short-name }
+# The default file name shown in the file picker when exporting saved logins.
+# This must end in .csv
+about-logins-export-file-picker-default-filename2 = passwords.csv
+about-logins-export-file-picker-export-button = Export
+# A description for the .csv file format that may be shown as the file type
+# filter by the operating system.
+about-logins-export-file-picker-csv-filter-title =
+    { PLATFORM() ->
+        [macos] CSV Document
+       *[other] CSV File
+    }
+
+## Login Import Dialog
+
+# Title of the file picker dialog
+about-logins-import-file-picker-title = Import Logins File
+# Title of the file picker dialog
+about-logins-import-file-picker-title2 = Import Passwords to { -brand-short-name }
+about-logins-import-file-picker-import-button = Import
+# A description for the .csv file format that may be shown as the file type
+# filter by the operating system.
+about-logins-import-file-picker-csv-filter-title =
+    { PLATFORM() ->
+        [macos] CSV Document
+       *[other] CSV File
+    }
+# A description for the .tsv file format that may be shown as the file type
+# filter by the operating system. TSV is short for 'tab separated values'.
+about-logins-import-file-picker-tsv-filter-title =
+    { PLATFORM() ->
+        [macos] TSV Document
+       *[other] TSV File
+    }
+
+##
+## Variables:
+##  $count (number) - The number of affected elements
+
+about-logins-import-dialog-title = Import Complete
+about-logins-import-dialog-items-added =
+    { $count ->
+       *[other] <span>New logins added:</span> <span data-l10n-name="count">{ $count }</span>
+    }
+about-logins-import-dialog-items-modified =
+    { $count ->
+       *[other] <span>Existing logins updated:</span> <span data-l10n-name="count">{ $count }</span>
+    }
+about-logins-import-dialog-items-no-change =
+    { $count ->
+       *[other] <span>Duplicate logins found:</span> <span data-l10n-name="count">{ $count }</span> <span data-l10n-name="meta">(not imported)</span>
+    }
+about-logins-import-dialog-items-added2 =
+    { $count ->
+       *[other] <span>New passwords added:</span> <span data-l10n-name="count">{ $count }</span>
+    }
+about-logins-import-dialog-items-modified2 =
+    { $count ->
+       *[other] <span>Existing entries updated:</span> <span data-l10n-name="count">{ $count }</span>
+    }
+about-logins-import-dialog-items-no-change2 =
+    { $count ->
+       *[other] <span>Duplicate entries found:</span> <span data-l10n-name="count">{ $count }</span> <span data-l10n-name="meta">(not imported)</span>
+    }
+about-logins-import-dialog-items-error =
+    { $count ->
+       *[other] <span>Errors:</span> <span data-l10n-name="count">{ $count }</span> <span data-l10n-name="meta">(not imported)</span>
+    }
+about-logins-import-dialog-done = Done
+about-logins-import-dialog-error-title = Import Error
+about-logins-import-dialog-error-conflicting-values-title = Multiple Conflicting Values for One Login
+about-logins-import-dialog-error-conflicting-values-description = For example: multiple usernames, passwords, URLs, etc. for one login.
+about-logins-import-dialog-error-file-format-title = File Format Issue
+about-logins-import-dialog-error-file-format-description = Incorrect or missing column headers. Make sure the file includes columns for username, password and URL.
+about-logins-import-dialog-error-file-permission-title = Unable to Read File
+about-logins-import-dialog-error-file-permission-description = { -brand-short-name } does not have permission to read the file. Try changing the file permissions.
+about-logins-import-dialog-error-unable-to-read-title = Unable to Parse File
+about-logins-import-dialog-error-unable-to-read-description = Make sure you selected a CSV or TSV file.
+about-logins-import-dialog-error-no-logins-imported = No logins have been imported
+about-logins-import-dialog-error-learn-more = Learn more
+about-logins-import-dialog-error-try-import-again = Try Import Again…
+about-logins-import-dialog-error-cancel = Cancel
+about-logins-import-report-title = Import Summary
+about-logins-import-report-description = Logins and passwords imported to { -brand-short-name }.
+about-logins-import-report-description2 = Passwords imported to { -brand-short-name }.
+#
+# Variables:
+#  $number (number) - The number of the row
+about-logins-import-report-row-index = Row { $number }
+about-logins-import-report-row-description-no-change = Duplicate: Exact match of existing login
+about-logins-import-report-row-description-modified = Existing login updated
+about-logins-import-report-row-description-added = New login added
+about-logins-import-report-row-description-no-change2 = Duplicate: Exact match of existing entry
+about-logins-import-report-row-description-modified2 = Existing entry updated
+about-logins-import-report-row-description-added2 = New password added
+about-logins-import-report-row-description-error = Error: Missing field
+
+##
+## Variables:
+##  $field (String) - The name of the field from the CSV file for example url, username or password
+
+about-logins-import-report-row-description-error-multiple-values = Error: Multiple values for { $field }
+about-logins-import-report-row-description-error-missing-field = Error: Missing { $field }
+
+##
+## Variables:
+##  $count (number) - The number of affected elements
+
+about-logins-import-report-added =
+    { $count ->
+       *[other] <div data-l10n-name="count">{ $count }</div> <div data-l10n-name="details">New logins added</div>
+    }
+about-logins-import-report-modified =
+    { $count ->
+       *[other] <div data-l10n-name="count">{ $count }</div> <div data-l10n-name="details">Existing logins updated</div>
+    }
+about-logins-import-report-no-change =
+    { $count ->
+       *[other] <div data-l10n-name="count">{ $count }</div> <div data-l10n-name="details">Duplicate logins</div> <div data-l10n-name="not-imported">(not imported)</div>
+    }
+about-logins-import-report-added2 =
+    { $count ->
+       *[other] <div data-l10n-name="count">{ $count }</div> <div data-l10n-name="details">New passwords added</div>
+    }
+about-logins-import-report-modified2 =
+    { $count ->
+       *[other] <div data-l10n-name="count">{ $count }</div> <div data-l10n-name="details">Existing entries updated</div>
+    }
+about-logins-import-report-no-change2 =
+    { $count ->
+       *[other] <div data-l10n-name="count">{ $count }</div> <div data-l10n-name="details">Duplicate entries</div> <div data-l10n-name="not-imported">(not imported)</div>
+    }
+about-logins-import-report-error =
+    { $count ->
+       *[other] <div data-l10n-name="count">{ $count }</div> <div data-l10n-name="details">Errors</div> <div data-l10n-name="not-imported">(not imported)</div>
+    }
+
+## Logins import report page
+
+about-logins-import-report-page-title = Import Summary Report
diff --git a/l10n-en-GB/browser/browser/aboutPocket.ftl b/l10n-en-GB/browser/browser/aboutPocket.ftl
new file mode 100644
index 0000000000..8a23af8054
--- /dev/null
+++ b/l10n-en-GB/browser/browser/aboutPocket.ftl
@@ -0,0 +1,75 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+### Pocket button panel strings for about:pocket-saved, about:pocket-signup, and about:pocket-home
+
+
+## about:pocket-saved panel
+
+# Placeholder text for tag input
+pocket-panel-saved-add-tags =
+    .placeholder = Add Tags
+
+pocket-panel-saved-error-generic = There was an error when trying to save to { -pocket-brand-name }.
+pocket-panel-saved-error-tag-length = Tags are limited to 25 characters
+pocket-panel-saved-error-only-links = Only links can be saved
+pocket-panel-saved-error-not-saved = Page Not Saved
+pocket-panel-saved-error-no-internet = You must be connected to the Internet in order to save to { -pocket-brand-name }. Please connect to the Internet and try again.
+pocket-panel-saved-error-remove = There was an error while trying to remove this page.
+pocket-panel-saved-page-removed = Page Removed
+pocket-panel-saved-page-saved = Saved to { -pocket-brand-name }
+pocket-panel-saved-page-saved-b = Saved to { -pocket-brand-name }!
+pocket-panel-saved-processing-remove = Removing Page…
+pocket-panel-saved-removed-updated = Page Removed from Saves
+pocket-panel-saved-processing-tags = Adding tags…
+pocket-panel-saved-remove-page = Remove Page
+pocket-panel-saved-save-tags = Save
+pocket-panel-saved-saving-tags = Saving…
+pocket-panel-saved-suggested-tags = Suggested Tags
+pocket-panel-saved-tags-saved = Tags Added
+
+# This is displayed above a field where the user can add tags
+pocket-panel-signup-add-tags = Add Tags:
+
+## about:pocket-signup panel
+
+pocket-panel-signup-already-have = Already a { -pocket-brand-name } user?
+pocket-panel-signup-learn-more = Learn more
+pocket-panel-signup-login = Log in
+pocket-panel-signup-signup-email = Sign up with email
+pocket-panel-signup-signup-cta = Sign up for { -pocket-brand-name }. It’s free.
+pocket-panel-signup-signup-firefox = Sign up with { -brand-product-name }
+pocket-panel-signup-tagline = Save articles and videos from { -brand-product-name } to view in { -pocket-brand-name } on any device, any time.
+pocket-panel-signup-tagline-story-one = Click the { -pocket-brand-name } Button to save any article, video or page from { -brand-product-name }.
+pocket-panel-signup-tagline-story-two = View in { -pocket-brand-name } on any device, any time.
+
+pocket-panel-signup-cta-a-fix = Your save button for the internet
+pocket-panel-signup-cta-b-updated = Click the { -pocket-brand-name } button to save articles, videos, and links. View your saves on any device, any time.
+pocket-panel-signup-cta-b-short = Click the { -pocket-brand-name } button to save articles, videos, and links.
+pocket-panel-signup-cta-c-updated = View your saves on any device, any time.
+
+## about:pocket-home panel
+
+pocket-panel-home-welcome-back = Welcome Back
+pocket-panel-home-paragraph = You can use { -pocket-brand-name } to explore and save web pages, articles, videos, podcasts, or get back to what you’ve been reading.
+pocket-panel-home-explore-popular-topics = Explore Popular Topics
+pocket-panel-home-discover-more = Discover More
+pocket-panel-home-explore-more = Explore
+
+pocket-panel-home-most-recent-saves = Here are your most recent saves:
+pocket-panel-home-most-recent-saves-loading = Recent saves loading…
+pocket-panel-home-new-user-cta = Click the { -pocket-brand-name } button to save articles, videos, and links.
+pocket-panel-home-new-user-message = See your recent saves here.
+
+## Pocket panel header component
+
+pocket-panel-header-my-saves = View My Saves
+pocket-panel-header-sign-in = Sign In
+
+## Pocket panel buttons
+
+pocket-panel-button-show-all = Show All
+pocket-panel-button-activate = Activate { -pocket-brand-name } in { -brand-product-name }
+pocket-panel-button-remove = Remove
diff --git a/l10n-en-GB/browser/browser/aboutPolicies.ftl b/l10n-en-GB/browser/browser/aboutPolicies.ftl
new file mode 100644
index 0000000000..d5ef87a573
--- /dev/null
+++ b/l10n-en-GB/browser/browser/aboutPolicies.ftl
@@ -0,0 +1,17 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+about-policies-title = Enterprise Policies
+
+# 'Active' is used to describe the policies that are currently active
+active-policies-tab = Active
+errors-tab = Errors
+documentation-tab = Documentation
+
+no-specified-policies-message = The Enterprise Policies service is active but there are no policies enabled.
+inactive-message = The Enterprise Policies service is inactive.
+
+policy-name = Policy Name
+policy-value = Policy Value
+policy-errors = Policy Errors
diff --git a/l10n-en-GB/browser/browser/aboutPrivateBrowsing.ftl b/l10n-en-GB/browser/browser/aboutPrivateBrowsing.ftl
new file mode 100644
index 0000000000..6ca158c444
--- /dev/null
+++ b/l10n-en-GB/browser/browser/aboutPrivateBrowsing.ftl
@@ -0,0 +1,80 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+privatebrowsingpage-open-private-window-label = Open a Private Window
+    .accesskey = P
+about-private-browsing-search-placeholder = Search the web
+about-private-browsing-info-title = You’re in a Private Window
+about-private-browsing-search-btn =
+    .title = Search the web
+# Variables
+#  $engine (String): the name of the user's default search engine
+about-private-browsing-handoff =
+    .title = Search with { $engine } or enter address
+about-private-browsing-handoff-no-engine =
+    .title = Search or enter address
+# Variables
+#  $engine (String): the name of the user's default search engine
+about-private-browsing-handoff-text = Search with { $engine } or enter address
+about-private-browsing-handoff-text-no-engine = Search or enter address
+about-private-browsing-not-private = You are currently not in a private window.
+about-private-browsing-info-description-private-window = Private window: { -brand-short-name } clears your search and browsing history when you close all private windows. This doesn’t make you anonymous.
+about-private-browsing-info-description-simplified = { -brand-short-name } clears your search and browsing history when you close all private windows, but this doesn’t make you anonymous.
+about-private-browsing-learn-more-link = Learn more
+about-private-browsing-hide-activity = Hide your activity and location, everywhere you browse
+about-private-browsing-get-privacy = Get privacy protections everywhere you browse
+about-private-browsing-hide-activity-1 = Hide browsing activity and location with { -mozilla-vpn-brand-name }. One click creates a secure connection, even on public Wi-Fi.
+about-private-browsing-prominent-cta = Stay private with { -mozilla-vpn-brand-name }
+about-private-browsing-focus-promo-cta = Download { -focus-brand-name }
+about-private-browsing-focus-promo-header = { -focus-brand-name }: Private browsing on-the-go
+about-private-browsing-focus-promo-text = Our dedicated private browsing mobile app clears your history and cookies every time.
+
+## The following strings will be used for experiments in Fx99 and Fx100
+
+about-private-browsing-focus-promo-header-b = Take private browsing to your phone
+about-private-browsing-focus-promo-text-b = Use { -focus-brand-name } for those private searches you don’t want your main mobile browser to see.
+about-private-browsing-focus-promo-header-c = Next-level privacy on mobile
+about-private-browsing-focus-promo-text-c = { -focus-brand-name } clears your history every time while blocking ads and trackers.
+# This string is the title for the banner for search engine selection
+# in a private window.
+# Variables:
+#   $engineName (String) - The engine name that will currently be used for the private window.
+about-private-browsing-search-banner-title = { $engineName } is your default search engine in Private Windows
+about-private-browsing-search-banner-description =
+    { PLATFORM() ->
+        [windows] To select a different search engine go to <a data-l10n-name="link-options">Options</a>
+       *[other] To select a different search engine go to <a data-l10n-name="link-options">Preferences</a>
+    }
+about-private-browsing-search-banner-close-button =
+    .aria-label = Close
+about-private-browsing-promo-close-button =
+    .title = Close
+
+## Strings used in a “pin promotion” message, which prompts users to pin a private window
+
+about-private-browsing-pin-promo-header = Private browsing freedom in one click
+about-private-browsing-pin-promo-link-text =
+    { PLATFORM() ->
+        [macos] Keep in Dock
+       *[other] Pin to taskbar
+    }
+about-private-browsing-pin-promo-title = No saved cookies or history, right from your desktop. Browse like no one’s watching.
+
+## Strings used in a promotion message for cookie banner reduction
+
+# Simplified version of the headline if the original text doesn't work
+# in your language: `See fewer cookie requests`.
+about-private-browsing-cookie-banners-promo-header = Cookie banners begone!
+about-private-browsing-cookie-banners-promo-button = Reduce Cookie Banners
+about-private-browsing-cookie-banners-promo-message = Let { -brand-short-name } automatically answer cookie pop-ups for you so you can get back to distraction-free browsing. { -brand-short-name } will reject all requests if possible.
+# Simplified version of the headline if the original text doesn't work
+# in your language: `{ -brand-short-name } will show fewer cookie requests`
+about-private-browsing-cookie-banners-promo-heading = { -brand-short-name } takes care of cookie banners for you
+about-private-browsing-cookie-banners-promo-body = We now automatically refuse many cookie banners so you can get tracked less and go back to distraction-free browsing.
+
+## Strings for Felt Privacy v1 experiments in 119
+
+about-private-browsing-felt-privacy-v1-info-header = Leave no traces on this device
+about-private-browsing-felt-privacy-v1-info-body = { -brand-short-name } deletes your cookies, history, and site data when you close all your private windows.
+about-private-browsing-felt-privacy-v1-info-link = Who might be able to see my activity?
diff --git a/l10n-en-GB/browser/browser/aboutRestartRequired.ftl b/l10n-en-GB/browser/browser/aboutRestartRequired.ftl
new file mode 100644
index 0000000000..ed7dc04fa2
--- /dev/null
+++ b/l10n-en-GB/browser/browser/aboutRestartRequired.ftl
@@ -0,0 +1,10 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+restart-required-title = Restart Required
+restart-required-heading = Restart to Keep Using { -brand-short-name }
+restart-required-intro = An update to { -brand-short-name } started in the background. You’ll need to restart to finish the update.
+window-restoration-info = Your windows and tabs will be quickly restored, but private ones will not.
+
+restart-button-label = Restart { -brand-short-name }
diff --git a/l10n-en-GB/browser/browser/aboutRobots.ftl b/l10n-en-GB/browser/browser/aboutRobots.ftl
new file mode 100644
index 0000000000..53dff6812c
--- /dev/null
+++ b/l10n-en-GB/browser/browser/aboutRobots.ftl
@@ -0,0 +1,29 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+### These strings are used in the about:robots page, which ties in with the
+### robots theme used in the Firefox 3 Beta 2/3 first run pages.
+### They're just meant to be fun and whimsical, with references to some geeky
+### but well-known robots in movies and books. Be creative with translations!
+
+# Nonsense line from the movie "The Day The Earth Stood Still". No translation needed.
+page-title = Gort! Klaatu barada nikto!
+# Movie: Logan's Run... Box (cyborg): "Welcome Humans! I am ready for you."
+error-title-text = Welcome Humans!
+# Movie: The Day The Earth Stood Still. Spoken by Klaatu.
+error-short-desc-text = We have come to visit you in peace and with goodwill!
+# Various books by Isaac Asimov. http://en.wikipedia.org/wiki/Three_Laws_of_Robotics
+error-long-desc1 = Robots may not injure a human being or, through inaction, allow a human being to come to harm.
+# Movie: Blade Runner. Batty: "I've seen things you people wouldn’t believe..."
+error-long-desc2 = Robots have seen things you people wouldn’t believe.
+# Book: Hitchhiker’s Guide To The Galaxy. What the Sirius Cybernetics Corporation calls robots.
+error-long-desc3 = Robots are Your Plastic Pal Who’s Fun To Be With.
+# TV: Futurama. Bender's first line is "Bite my shiny metal ass."
+error-long-desc4 = Robots have shiny metal posteriors which should not be bitten.
+# TV: Battlestar Galactica (2004 series). From the opening text.
+error-trailer-desc-text = And they have a plan.
+# Book: Hitchhiker's Guide To The Galaxy. Arthur presses a button and it warns him.
+error-try-again = Try Again
+    .label2 = Please do not press this button again.
diff --git a/l10n-en-GB/browser/browser/aboutSessionRestore.ftl b/l10n-en-GB/browser/browser/aboutSessionRestore.ftl
new file mode 100644
index 0000000000..003a6a8754
--- /dev/null
+++ b/l10n-en-GB/browser/browser/aboutSessionRestore.ftl
@@ -0,0 +1,51 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+restore-page-tab-title = Restore Session
+
+# The title is intended to be apologetic and disarming, expressing dismay
+# and regret that we are unable to restore the session for the user
+restore-page-error-title = Sorry. We’re having trouble getting your pages back.
+restore-page-problem-desc = We are having trouble restoring your last browsing session. Select Restore Session to try again.
+restore-page-try-this = Still not able to restore your session? Sometimes a tab is causing the issue. View previous tabs, remove the tick from the tabs you don’t need to recover, and then restore.
+
+restore-page-hide-tabs = Hide Previous Tabs
+restore-page-show-tabs = View Previous Tabs
+
+# When tabs are distributed across multiple windows, this message is used as a
+# header above the group of tabs for each window.
+#
+# Variables:
+#    $windowNumber: Progressive number associated to each window
+restore-page-window-label = Window { $windowNumber }
+
+restore-page-restore-header =
+    .label = Restore
+
+restore-page-list-header =
+    .label = Windows and Tabs
+
+restore-page-try-again-button =
+    .label = Restore Session
+    .accesskey = R
+
+restore-page-close-button =
+    .label = Start New Session
+    .accesskey = N
+
+## The following strings are used in about:welcomeback
+
+welcome-back-tab-title = Success!
+welcome-back-page-title = Success!
+welcome-back-page-info = { -brand-short-name } is ready to go.
+
+welcome-back-restore-button =
+    .label = Let’s go!
+    .accesskey = L
+
+welcome-back-restore-all-label = Restore all windows & tabs
+welcome-back-restore-some-label = Restore only the ones you want
+
+welcome-back-page-info-link = Your add-ons and customisations have been removed and your browser settings have been restored to their defaults. If this didn’t fix your issue, <a data-l10n-name="link-more">learn more about what you can do.</a>
+
diff --git a/l10n-en-GB/browser/browser/aboutTabCrashed.ftl b/l10n-en-GB/browser/browser/aboutTabCrashed.ftl
new file mode 100644
index 0000000000..33f5098de4
--- /dev/null
+++ b/l10n-en-GB/browser/browser/aboutTabCrashed.ftl
@@ -0,0 +1,22 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+crashed-title = Tab crash reporter
+crashed-close-tab-button = Close Tab
+crashed-restore-tab-button = Restore This Tab
+crashed-restore-all-button = Restore All Crashed Tabs
+crashed-header = Gah. Your tab just crashed.
+crashed-offer-help = We can help!
+crashed-single-offer-help-message = Choose { crashed-restore-tab-button } to reload the page.
+crashed-multiple-offer-help-message = Choose { crashed-restore-tab-button } or { crashed-restore-all-button } to reload the page/pages.
+crashed-request-help = Will you help us?
+crashed-request-help-message = Crash reports help us diagnose problems and make { -brand-short-name } better.
+crashed-request-report-title = Report this tab
+crashed-send-report-2 = Send an automated crash report so we can fix issues like this
+crashed-comment =
+    .placeholder = Optional comments (comments are publicly visible)
+crashed-include-URL-2 = Include the URLs of the sites you were on when { -brand-short-name } crashed
+crashed-report-sent = Crash report already submitted; thank you for helping make { -brand-short-name } better!
+crashed-request-auto-submit-title = Report background tabs
+crashed-auto-submit-checkbox-2 = Update preferences to automatically submit reports when { -brand-short-name } crashes
diff --git a/l10n-en-GB/browser/browser/aboutUnloads.ftl b/l10n-en-GB/browser/browser/aboutUnloads.ftl
new file mode 100644
index 0000000000..f613126a75
--- /dev/null
+++ b/l10n-en-GB/browser/browser/aboutUnloads.ftl
@@ -0,0 +1,45 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+### Strings used in about:unloads, allowing users to manage the "tab unloading"
+### feature.
+
+about-unloads-page-title = Tab Unloading
+about-unloads-intro =
+    { -brand-short-name } has a feature that automatically unloads tabs
+    to prevent the application from crashing due to insufficient memory
+    when the system’s available memory is low. The next tab to be unloaded is
+    chosen based on multiple attributes. This page shows how
+    { -brand-short-name } prioritises tabs and which tab will be unloaded
+    when tab unloading is triggered. You can trigger tab unloading manually
+    by clicking the <em>Unload</em> button below.
+
+# The link points to a Firefox documentation page, only available in English,
+# with title "Tab Unloading"
+about-unloads-learn-more =
+    See <a data-l10n-name="doc-link">Tab Unloading</a> to learn more about
+    the feature and this page.
+
+about-unloads-last-updated = Last updated: { DATETIME($date, year: "numeric", month: "numeric", day: "numeric", hour: "numeric", minute: "numeric", second: "numeric", hour12: "false") }
+about-unloads-button-unload = Unload
+    .title = Unload tab with the highest priority
+about-unloads-no-unloadable-tab = There are no unloadable tabs.
+
+about-unloads-column-priority = Priority
+about-unloads-column-host = Host
+about-unloads-column-last-accessed = Last Accessed
+about-unloads-column-weight = Base Weight
+    .title = Tabs are first sorted by this value, which derives from some special attributes such as playing a sound, WebRTC, etc.
+about-unloads-column-sortweight = Secondary Weight
+    .title = If available, tabs are sorted by this value after being sorted by the base weight. The value derives from tab’s memory usage and the count of processes.
+about-unloads-column-memory = Memory
+    .title = Tab’s estimated memory usage
+about-unloads-column-processes = Process IDs
+    .title = IDs of the processes hosting tab’s content
+
+about-unloads-last-accessed = { DATETIME($date, year: "numeric", month: "numeric", day: "numeric", hour: "numeric", minute: "numeric", second: "numeric", hour12: "false") }
+about-unloads-memory-in-mb = { NUMBER($mem, maxFractionalUnits: 2) } MB
+about-unloads-memory-in-mb-tooltip =
+    .title = { NUMBER($mem, maxFractionalUnits: 2) } MB
diff --git a/l10n-en-GB/browser/browser/accounts.ftl b/l10n-en-GB/browser/browser/accounts.ftl
new file mode 100644
index 0000000000..21f95d0b14
--- /dev/null
+++ b/l10n-en-GB/browser/browser/accounts.ftl
@@ -0,0 +1,106 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# Used as the FxA toolbar menu item value when user has not
+# finished setting up an account.
+account-finish-account-setup = Finish Account Setup
+
+# Used as the FxA toolbar menu item title when the user
+# needs to reconnect their account.
+account-disconnected2 = Account disconnected
+
+# Menu item that sends a tab to all synced devices.
+account-send-to-all-devices = Send to all devices
+
+# Menu item that links to the Firefox Accounts settings for connected devices.
+account-manage-devices = Manage devices…
+
+## Variables:
+##   $email (String): = Email address of user's Firefox Account.
+
+account-reconnect = Reconnect { $email }
+account-verify = Verify { $email }
+
+## Displayed in the Send Tab/Page/Link to Device context menu when right clicking a tab, a page or a link.
+
+account-send-to-all-devices-titlecase = Send to All Devices
+account-manage-devices-titlecase = Manage Devices…
+
+## Displayed in the Send Tabs context menu when right clicking a tab, a page or a link
+## and the account has only 1 device connected.
+
+# Redirects to a marketing page.
+account-send-tab-to-device-singledevice-status = No Devices Connected
+
+# Redirects to a marketing page.
+account-send-tab-to-device-singledevice-learnmore = Learn About Sending Tabs…
+
+# Redirects to an FxAccounts page that tells to you to connect another device.
+account-send-tab-to-device-connectdevice = Connect Another Device…
+
+## Displayed in the Send Tabs context menu when right clicking a tab, a page or a link
+## and the Sync account is unverified. Redirects to the Sync preferences page.
+
+account-send-tab-to-device-verify-status = Account Not Verified
+account-send-tab-to-device-verify = Verify Your Account…
+
+## These strings are used in a notification shown when a new device joins the Firefox account.
+
+# The title shown in a notification when either this device or another device
+# has connected to, or disconnected from, a Firefox account.
+account-connection-title = { -fxaccount-brand-name(capitalization: "title") }
+
+# Variables:
+#   $deviceName (String): the name of the new device
+account-connection-connected-with = This computer is now connected with { $deviceName }.
+
+# Used when the name of the new device is not known.
+account-connection-connected-with-noname = This computer is now connected with a new device.
+
+# Used in a notification shown after a Firefox account is connected to the current device.
+account-connection-connected = You have signed in successfully
+
+# Used in a notification shown after the Firefox account was disconnected remotely.
+account-connection-disconnected = This computer has been disconnected.
+
+## These strings are used in a notification shown when we're opening
+## a single tab another device sent us to display.
+## The body for this notification is the URL of the received tab.
+
+account-single-tab-arriving-title = Tab Received
+# Variables:
+#   $deviceName (String): the device name.
+account-single-tab-arriving-from-device-title = Tab from { $deviceName }
+
+# Used when a tab from a remote device arrives but the URL must be truncated.
+# Should display the URL with an indication that it's been truncated.
+# Variables:
+#   $url (String): the portion of the URL that remains after truncation.
+account-single-tab-arriving-truncated-url = { $url }…
+
+## These strings are used in a notification shown when we're opening
+## multiple tabs another device or devices sent us to display.
+## Variables:
+##   $tabCount (Number): the number of tabs received
+
+account-multiple-tabs-arriving-title = Tabs Received
+
+# Variables:
+#   $deviceName (String): the device name.
+account-multiple-tabs-arriving-from-single-device =
+    { $tabCount ->
+        [one] { $tabCount } tab has arrived from { $deviceName }
+       *[other] { $tabCount } tabs have arrived from { $deviceName }
+    }
+account-multiple-tabs-arriving-from-multiple-devices =
+    { $tabCount ->
+        [one] { $tabCount } tab has arrived from your connected devices
+       *[other] { $tabCount } tabs have arrived from your connected devices
+    }
+# This version is used when we don't know any device names.
+account-multiple-tabs-arriving-from-unknown-device =
+    { $tabCount ->
+        [one] { $tabCount } tab has arrived
+       *[other] { $tabCount } tabs have arrived
+    }
diff --git a/l10n-en-GB/browser/browser/addonNotifications.ftl b/l10n-en-GB/browser/browser/addonNotifications.ftl
new file mode 100644
index 0000000000..c8f00a0317
--- /dev/null
+++ b/l10n-en-GB/browser/browser/addonNotifications.ftl
@@ -0,0 +1,132 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+xpinstall-prompt = { -brand-short-name } prevented this site from asking you to install software on your computer.
+
+## Variables:
+##   $host (String): The hostname of the site the add-on is being installed from.
+
+xpinstall-prompt-header = Allow { $host } to install an add-on?
+xpinstall-prompt-message = You are attempting to install an add-on from { $host }. Make sure you trust this site before continuing.
+
+##
+
+xpinstall-prompt-header-unknown = Allow an unknown site to install an add-on?
+xpinstall-prompt-message-unknown = You are attempting to install an add-on from an unknown site. Make sure you trust this site before continuing.
+
+xpinstall-prompt-dont-allow =
+    .label = Don’t Allow
+    .accesskey = D
+xpinstall-prompt-never-allow =
+    .label = Never Allow
+    .accesskey = N
+# Long text in this context make the dropdown menu extend awkwardly to the left,
+# avoid a localization that's significantly longer than the English version.
+xpinstall-prompt-never-allow-and-report =
+    .label = Report Suspicious Site
+    .accesskey = R
+# Accessibility Note:
+# Be sure you do not choose an accesskey that is used elsewhere in the active context (e.g. main menu bar, submenu of the warning popup button)
+# See https://website-archive.mozilla.org/www.mozilla.org/access/access/keyboard/ for details
+xpinstall-prompt-install =
+    .label = Continue to Installation
+    .accesskey = C
+
+# These messages are shown when a website invokes navigator.requestMIDIAccess.
+
+site-permission-install-first-prompt-midi-header = This site is requesting access to your MIDI (Musical Instrument Digital Interface) devices. Device access can be enabled by installing an add-on.
+site-permission-install-first-prompt-midi-message = This access is not guaranteed to be safe. Only continue if you trust this site.
+
+##
+
+xpinstall-disabled-locked = Software installation has been disabled by your system administrator.
+xpinstall-disabled = Software installation is currently disabled. Click Enable and try again.
+xpinstall-disabled-button =
+    .label = Enable
+    .accesskey = n
+
+# This message is shown when the installation of an add-on is blocked by enterprise policy.
+# Variables:
+#   $addonName (String): the name of the add-on.
+#   $addonId (String): the ID of add-on.
+addon-install-blocked-by-policy = { $addonName } ({ $addonId }) is blocked by your system administrator.
+# This message is shown when the installation of add-ons from a domain is blocked by enterprise policy.
+addon-domain-blocked-by-policy = Your system administrator prevented this site from asking you to install software on your computer.
+addon-install-full-screen-blocked = Add-on installation is not allowed while in or before entering fullscreen mode.
+
+# Variables:
+#   $addonName (String): the localized name of the sideloaded add-on.
+webext-perms-sideload-menu-item = { $addonName } added to { -brand-short-name }
+# Variables:
+#   $addonName (String): the localized name of the extension which has been updated.
+webext-perms-update-menu-item = { $addonName } requires new permissions
+
+# This message is shown when one or more extensions have been imported from a
+# different browser into Firefox, and the user needs to complete the import to
+# start these extensions. This message is shown in the appmenu.
+webext-imported-addons = Finalize installing extensions imported to { -brand-short-name }
+
+## Add-on removal warning
+
+# Variables:
+#  $name (String): The name of the add-on that will be removed.
+addon-removal-title = Remove { $name }?
+# Variables:
+#   $name (String): the name of the extension which is about to be removed.
+addon-removal-message = Remove { $name } from { -brand-shorter-name }?
+addon-removal-button = Remove
+addon-removal-abuse-report-checkbox = Report this extension to { -vendor-short-name }
+
+# Variables:
+#   $addonCount (Number): the number of add-ons being downloaded
+addon-downloading-and-verifying =
+    { $addonCount ->
+        [one] Downloading and verifying add-on…
+       *[other] Downloading and verifying { $addonCount } add-ons…
+    }
+addon-download-verifying = Verifying
+
+addon-install-cancel-button =
+    .label = Cancel
+    .accesskey = C
+addon-install-accept-button =
+    .label = Add
+    .accesskey = A
+
+## Variables:
+##   $addonCount (Number): the number of add-ons being installed
+
+addon-confirm-install-message =
+    { $addonCount ->
+        [one] This site would like to install an add-on in { -brand-short-name }:
+       *[other] This site would like to install { $addonCount } add-ons in { -brand-short-name }:
+    }
+addon-confirm-install-unsigned-message =
+    { $addonCount ->
+        [one] Caution: This site would like to install an unverified add-on in { -brand-short-name }. Proceed at your own risk.
+       *[other] Caution: This site would like to install { $addonCount } unverified add-ons in { -brand-short-name }. Proceed at your own risk.
+    }
+# Variables:
+#   $addonCount (Number): the number of add-ons being installed (at least 2)
+addon-confirm-install-some-unsigned-message = Caution: This site would like to install { $addonCount } add-ons in { -brand-short-name }, some of which are unverified. Proceed at your own risk.
+
+## Add-on install errors
+## Variables:
+##   $addonName (String): the add-on name.
+
+addon-install-error-network-failure = The add-on could not be downloaded because of a connection failure.
+addon-install-error-incorrect-hash = The add-on could not be installed because it does not match the add-on { -brand-short-name } expected.
+addon-install-error-corrupt-file = The add-on downloaded from this site could not be installed because it appears to be corrupt.
+addon-install-error-file-access = { $addonName } could not be installed because { -brand-short-name } cannot modify the needed file.
+addon-install-error-not-signed = { -brand-short-name } has prevented this site from installing an unverified add-on.
+addon-install-error-invalid-domain = The add-on { $addonName } can not be installed from this location.
+addon-local-install-error-network-failure = This add-on could not be installed because of a filesystem error.
+addon-local-install-error-incorrect-hash = This add-on could not be installed because it does not match the add-on { -brand-short-name } expected.
+addon-local-install-error-corrupt-file = This add-on could not be installed because it appears to be corrupt.
+addon-local-install-error-file-access = { $addonName } could not be installed because { -brand-short-name } cannot modify the needed file.
+addon-local-install-error-not-signed = This add-on could not be installed because it has not been verified.
+# Variables:
+#   $appVersion (String): the application version.
+addon-install-error-incompatible = { $addonName } could not be installed because it is not compatible with { -brand-short-name } { $appVersion }.
+addon-install-error-blocklisted = { $addonName } could not be installed because it has a high risk of causing stability or security problems.
diff --git a/l10n-en-GB/browser/browser/allTabsMenu.ftl b/l10n-en-GB/browser/browser/allTabsMenu.ftl
new file mode 100644
index 0000000000..bd152943c4
--- /dev/null
+++ b/l10n-en-GB/browser/browser/allTabsMenu.ftl
@@ -0,0 +1,17 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# "Search" is a verb, as in "Search through tabs".
+all-tabs-menu-search-tabs =
+    .label = Search tabs
+
+all-tabs-menu-new-user-context =
+    .label = New container tab
+
+all-tabs-menu-hidden-tabs =
+    .label = Hidden tabs
+
+all-tabs-menu-manage-user-context =
+    .label = Manage containers
+    .accesskey = o
diff --git a/l10n-en-GB/browser/browser/appExtensionFields.ftl b/l10n-en-GB/browser/browser/appExtensionFields.ftl
new file mode 100644
index 0000000000..ad19c899a0
--- /dev/null
+++ b/l10n-en-GB/browser/browser/appExtensionFields.ftl
@@ -0,0 +1,31 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+## Theme names and descriptions used in the Themes panel in about:addons
+
+# "Auto" is short for automatic. It can be localized without limitations.
+extension-default-theme-name-auto = System theme — auto
+extension-default-theme-description = Follow the operating system setting for buttons, menus, and windows.
+
+extension-firefox-compact-light-name = Light
+extension-firefox-compact-light-description = A theme with a light colour scheme.
+
+extension-firefox-compact-dark-name = Dark
+extension-firefox-compact-dark-description = A theme with a dark colour scheme.
+
+extension-firefox-alpenglow-name = Firefox Alpenglow
+extension-firefox-alpenglow-description = Use a colourful appearance for buttons, menus, and windows.
+
+## Colorway Themes
+## These themes are variants of a colorway. The colorway is specified in the
+## $colorway-name variable.
+## Variables
+##   $colorway-name (String) The name of a colorway (e.g. Graffiti, Elemental).
+
+extension-colorways-soft-name = { $colorway-name } — Soft
+extension-colorways-balanced-name = { $colorway-name } — Balanced
+# "Bold" is used in the sense of bravery or courage, not in the sense of
+# emphasized text.
+extension-colorways-bold-name = { $colorway-name } — Bold
diff --git a/l10n-en-GB/browser/browser/appMenuNotifications.ftl b/l10n-en-GB/browser/browser/appMenuNotifications.ftl
new file mode 100644
index 0000000000..394769bd9d
--- /dev/null
+++ b/l10n-en-GB/browser/browser/appMenuNotifications.ftl
@@ -0,0 +1,66 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+appmenu-update-available2 =
+    .label = Update available
+    .buttonlabel = Download
+    .buttonaccesskey = D
+    .secondarybuttonlabel = Dismiss
+    .secondarybuttonaccesskey = m
+appmenu-update-available-message2 = Download the latest version of { -brand-shorter-name }.
+appmenu-update-manual2 =
+    .label = Update available
+    .buttonlabel = Download
+    .buttonaccesskey = D
+    .secondarybuttonlabel = Dismiss
+    .secondarybuttonaccesskey = m
+appmenu-update-manual-message2 = { -brand-shorter-name } couldn’t update automatically. Download the new version — you won’t lose saved information or customisations.
+appmenu-update-unsupported2 =
+    .label = Unable to update
+    .buttonlabel = Learn more
+    .buttonaccesskey = L
+    .secondarybuttonlabel = Dismiss
+    .secondarybuttonaccesskey = m
+appmenu-update-unsupported-message2 = Your operating system isn’t compatible with the latest version of { -brand-shorter-name }.
+appmenu-update-restart2 =
+    .label = Update available
+    .buttonlabel = Update and restart
+    .buttonaccesskey = U
+    .secondarybuttonlabel = Dismiss
+    .secondarybuttonaccesskey = m
+appmenu-update-restart-message2 = Get the latest version of { -brand-shorter-name }. Open tabs and windows will be restored.
+appmenu-update-other-instance =
+    .label = { -brand-shorter-name } is unable to automatically update to the latest version.
+    .buttonlabel = Update { -brand-shorter-name } anyway
+    .buttonaccesskey = U
+    .secondarybuttonlabel = Not Now
+    .secondarybuttonaccesskey = N
+appmenu-update-other-instance-message = A new { -brand-shorter-name } update is available, but it can’t be installed because another copy of { -brand-shorter-name } is running. Close it to continue the update, or choose to update anyway (the other copy may not work correctly until you restart it).
+
+appmenu-addon-private-browsing-installed2 =
+    .buttonlabel = Okay
+    .buttonaccesskey = O
+appmenu-addon-post-install-message3 = Manage your add-ons and themes through the application menu.
+appmenu-addon-post-install-incognito-checkbox =
+    .label = Allow this extension to run in Private Windows
+    .accesskey = A
+    
+appmenu-new-tab-controlled-changes =
+    .label = Your new tab has changed.
+    .buttonlabel = Keep Changes
+    .buttonaccesskey = K
+    .secondarybuttonlabel = Manage New Tabs
+    .secondarybuttonaccesskey = M
+appmenu-homepage-controlled-changes =
+    .label = Your homepage has changed.
+    .buttonlabel = Keep Changes
+    .buttonaccesskey = K
+    .secondarybuttonlabel = Manage Homepage
+    .secondarybuttonaccesskey = M
+appmenu-tab-hide-controlled =
+    .label = Access Your Hidden Tabs
+    .buttonlabel = Keep Tabs Hidden
+    .buttonaccesskey = K
+    .secondarybuttonlabel = Disable Extension
+    .secondarybuttonaccesskey = D
diff --git a/l10n-en-GB/browser/browser/appmenu.ftl b/l10n-en-GB/browser/browser/appmenu.ftl
new file mode 100644
index 0000000000..3e2191cd00
--- /dev/null
+++ b/l10n-en-GB/browser/browser/appmenu.ftl
@@ -0,0 +1,259 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+## App Menu
+
+appmenuitem-banner-update-downloading =
+    .label = Downloading { -brand-shorter-name } update
+appmenuitem-banner-update-available =
+    .label = Update available — download now
+appmenuitem-banner-update-manual =
+    .label = Update available — download now
+appmenuitem-banner-update-unsupported =
+    .label = Unable to update — system incompatible
+appmenuitem-banner-update-restart =
+    .label = Update available — restart now
+appmenuitem-new-tab =
+    .label = New tab
+appmenuitem-new-window =
+    .label = New window
+appmenuitem-new-private-window =
+    .label = New private window
+appmenuitem-history =
+    .label = History
+appmenuitem-downloads =
+    .label = Downloads
+appmenuitem-passwords =
+    .label = Passwords
+appmenuitem-addons-and-themes =
+    .label = Add-ons and themes
+appmenuitem-print =
+    .label = Print…
+appmenuitem-find-in-page =
+    .label = Find in page…
+appmenuitem-translate =
+    .label = Translate page…
+appmenuitem-zoom =
+    .value = Zoom
+appmenuitem-more-tools =
+    .label = More tools
+appmenuitem-help =
+    .label = Help
+appmenuitem-exit2 =
+    .label =
+        { PLATFORM() ->
+            [linux] Quit
+           *[other] Exit
+        }
+appmenu-menu-button-closed2 =
+    .tooltiptext = Open application menu
+    .label = { -brand-short-name }
+appmenu-menu-button-opened2 =
+    .tooltiptext = Close application menu
+    .label = { -brand-short-name }
+# Settings is now used to access the browser settings across all platforms,
+# instead of Options or Preferences.
+appmenuitem-settings =
+    .label = Settings
+
+## Zoom and Fullscreen Controls
+
+appmenuitem-zoom-enlarge =
+    .label = Zoom in
+appmenuitem-zoom-reduce =
+    .label = Zoom out
+appmenuitem-fullscreen =
+    .label = Full screen
+
+## Firefox Account toolbar button and Sync panel in App menu.
+
+appmenu-remote-tabs-sign-into-sync =
+    .label = Sign in to sync…
+appmenu-remote-tabs-turn-on-sync =
+    .label = Turn on sync…
+# This is shown after the tabs list if we can display more tabs by clicking on the button
+appmenu-remote-tabs-showmore =
+    .label = Show More Tabs
+    .tooltiptext = Show more tabs from this device
+# This is shown beneath the name of a device when that device has no open tabs
+appmenu-remote-tabs-notabs = No open tabs
+# This is shown when Sync is configured but syncing tabs is disabled.
+appmenu-remote-tabs-tabsnotsyncing = Turn on tab synchronising to view a list of tabs from your other devices.
+appmenu-remote-tabs-opensettings =
+    .label = Settings
+# This is shown when Sync is configured but this appears to be the only device attached to
+# the account. We also show links to download Firefox for android/ios.
+appmenu-remote-tabs-noclients = Want to see your tabs from other devices here?
+appmenu-remote-tabs-connectdevice =
+    .label = Connect Another Device
+appmenu-remote-tabs-welcome = View a list of tabs from your other devices.
+appmenu-remote-tabs-unverified = Your account needs to be verified.
+appmenuitem-fxa-toolbar-sync-now2 = Synchronise now
+appmenuitem-fxa-sign-in = Sign in to { -brand-product-name }
+appmenuitem-fxa-manage-account = Manage account
+appmenu-fxa-header2 = { -fxaccount-brand-name(capitalization: "sentence") }
+appmenu-account-header = Account
+# Variables
+# $time (string) - Localized relative time since last sync (e.g. 1 second ago,
+# 3 hours ago, etc.)
+appmenu-fxa-last-sync = Last synchronised { $time }
+    .label = Last synchronised { $time }
+appmenu-fxa-sync-and-save-data2 = Sync and save data
+appmenu-fxa-signed-in-label = Sign In
+appmenu-fxa-setup-sync =
+    .label = Turn On Synchronisation…
+appmenuitem-save-page =
+    .label = Save page as…
+
+## What's New panel in App menu.
+
+whatsnew-panel-header = What’s New
+# Checkbox displayed at the bottom of the What's New panel, allowing users to
+# enable/disable What's New notifications.
+whatsnew-panel-footer-checkbox =
+    .label = Notify about new features
+    .accesskey = f
+
+## The Firefox Profiler – The popup is the UI to turn on the profiler, and record
+## performance profiles. To enable it go to profiler.firefox.com and click
+## "Enable Profiler Menu Button".
+
+profiler-popup-button-idle =
+    .label = Profiler
+    .tooltiptext = Record a performance profile
+profiler-popup-button-recording =
+    .label = Profiler
+    .tooltiptext = The profiler is recording a profile
+profiler-popup-button-capturing =
+    .label = Profiler
+    .tooltiptext = The profiler is capturing a profile
+profiler-popup-header-text = { -profiler-brand-name }
+profiler-popup-reveal-description-button =
+    .aria-label = Reveal more information
+profiler-popup-description-title =
+    .value = Record, analyse, share
+profiler-popup-description = Collaborate on performance issues by publishing profiles to share with your team.
+profiler-popup-learn-more-button =
+    .label = Learn more
+profiler-popup-settings =
+    .value = Settings
+# This link takes the user to about:profiling, and is only visible with the Custom preset.
+profiler-popup-edit-settings-button =
+    .label = Edit Settings…
+profiler-popup-recording-screen = Recording…
+profiler-popup-start-recording-button =
+    .label = Start Recording
+profiler-popup-discard-button =
+    .label = Discard
+profiler-popup-capture-button =
+    .label = Capture
+profiler-popup-start-shortcut =
+    { PLATFORM() ->
+        [macos] ⌃⇧1
+       *[other] Ctrl+Shift+1
+    }
+profiler-popup-capture-shortcut =
+    { PLATFORM() ->
+        [macos] ⌃⇧2
+       *[other] Ctrl+Shift+2
+    }
+
+## Profiler presets
+## They are shown in the popup's select box.
+
+
+# Presets and their l10n IDs are defined in the file
+# devtools/client/performance-new/shared/background.jsm.js
+# Please take care that the same values are also defined in devtools' perftools.ftl.
+
+profiler-popup-presets-web-developer-description = Recommended preset for most web app debugging, with low overhead.
+profiler-popup-presets-web-developer-label =
+    .label = Web Developer
+profiler-popup-presets-firefox-description = Recommended preset for profiling { -brand-shorter-name }.
+profiler-popup-presets-firefox-label =
+    .label = { -brand-shorter-name }
+profiler-popup-presets-graphics-description = Preset for investigating graphics bugs in { -brand-shorter-name }.
+profiler-popup-presets-graphics-label =
+    .label = Graphics
+profiler-popup-presets-media-description2 = Preset for investigating audio and video bugs in { -brand-shorter-name }.
+profiler-popup-presets-media-label =
+    .label = Media
+profiler-popup-presets-networking-description = Preset for investigating networking bugs in { -brand-shorter-name }.
+profiler-popup-presets-networking-label =
+    .label = Networking
+profiler-popup-presets-power-description = Preset for investigating power use bugs in { -brand-shorter-name }, with low overhead.
+# "Power" is used in the sense of energy (electricity used by the computer).
+profiler-popup-presets-power-label =
+    .label = Power
+profiler-popup-presets-custom-label =
+    .label = Custom
+
+## History panel
+
+appmenu-manage-history =
+    .label = Manage history
+appmenu-restore-session =
+    .label = Restore previous session
+appmenu-clear-history =
+    .label = Clear recent history…
+appmenu-recent-history-subheader = Recent history
+appmenu-recently-closed-tabs =
+    .label = Recently closed tabs
+appmenu-recently-closed-windows =
+    .label = Recently closed windows
+# This allows to search through the browser's history.
+appmenu-search-history =
+    .label = Search history
+
+## Help panel
+
+appmenu-help-header =
+    .title = { -brand-shorter-name } help
+appmenu-about =
+    .label = About { -brand-shorter-name }
+    .accesskey = A
+appmenu-get-help =
+    .label = Get help
+    .accesskey = H
+appmenu-help-more-troubleshooting-info =
+    .label = More troubleshooting information
+    .accesskey = T
+appmenu-help-report-site-issue =
+    .label = Report site issue…
+appmenu-help-share-ideas =
+    .label = Share ideas and feedback…
+    .accesskey = S
+appmenu-help-switch-device =
+    .label = Switching to a new device
+
+## appmenu-help-enter-troubleshoot-mode and appmenu-help-exit-troubleshoot-mode
+## are mutually exclusive, so it's possible to use the same accesskey for both.
+
+appmenu-help-enter-troubleshoot-mode2 =
+    .label = Troubleshoot Mode…
+    .accesskey = M
+appmenu-help-exit-troubleshoot-mode =
+    .label = Turn Troubleshoot Mode off
+    .accesskey = M
+
+## appmenu-help-report-deceptive-site and appmenu-help-not-deceptive
+## are mutually exclusive, so it's possible to use the same accesskey for both.
+
+appmenu-help-report-deceptive-site =
+    .label = Report deceptive site…
+    .accesskey = d
+appmenu-help-not-deceptive =
+    .label = This isn’t a deceptive site…
+    .accesskey = D
+
+## More Tools
+
+appmenu-customizetoolbar =
+    .label = Customise toolbar…
+appmenu-developer-tools-subheader = Browser tools
+appmenu-developer-tools-extensions =
+    .label = Extensions for developers
+appmenuitem-report-broken-site =
+    .label = Report broken site
diff --git a/l10n-en-GB/browser/browser/backgroundtasks/defaultagent.ftl b/l10n-en-GB/browser/browser/backgroundtasks/defaultagent.ftl
new file mode 100644
index 0000000000..8622188c4b
--- /dev/null
+++ b/l10n-en-GB/browser/browser/backgroundtasks/defaultagent.ftl
@@ -0,0 +1,9 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+default-browser-agent-task-description = The Default Browser Agent task checks when the default changes from { -brand-short-name } to another browser. If the change happens under suspicious circumstances, it will prompt users to change back to { -brand-short-name } no more than two times. This task is installed automatically by { -brand-short-name }, and is reinstalled when { -brand-short-name } updates. To disable this task, update the “default-browser-agent.enabled” preference on the about:config page or the { -brand-short-name } enterprise policy setting “DisableDefaultBrowserAgent”.
+default-browser-notification-header-text = Keep using { -brand-short-name }?
+default-browser-notification-body-text = Your default browser was recently changed. Tap to restore { -brand-short-name } to default.
+default-browser-notification-yes-button-text = Yes
+default-browser-notification-no-button-text = No
diff --git a/l10n-en-GB/browser/browser/browser.ftl b/l10n-en-GB/browser/browser/browser.ftl
new file mode 100644
index 0000000000..266131c600
--- /dev/null
+++ b/l10n-en-GB/browser/browser/browser.ftl
@@ -0,0 +1,994 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+## The main browser window's title
+
+# These are the default window titles everywhere except macOS.
+# .data-title-default and .data-title-private are used when the web content
+# opened has no title:
+#
+# default - "Mozilla Firefox"
+# private - "Mozilla Firefox (Private Browsing)"
+#
+# .data-content-title-default and .data-content-title-private are for use when
+# there *is* a content title.
+# Variables:
+#  $content-title (String): the title of the web content.
+browser-main-window-window-titles =
+    .data-title-default = { -brand-full-name }
+    .data-title-private = { -brand-full-name } Private Browsing
+    .data-content-title-default = { $content-title } — { -brand-full-name }
+    .data-content-title-private = { $content-title } — { -brand-full-name } Private Browsing
+# These are the default window titles on macOS.
+# .data-title-default and .data-title-private are used when the web content
+# opened has no title:
+#
+#
+# "default" - "Mozilla Firefox"
+# "private" - "Mozilla Firefox — (Private Browsing)"
+#
+# .data-content-title-default and .data-content-title-private are for use when
+# there *is* a content title.
+# Do not use the brand name in these, as we do on non-macOS.
+#
+# Also note the other subtle difference here: we use a `-` to separate the
+# brand name from `(Private Browsing)`, which does not happen on other OSes.
+#
+# Variables:
+#  $content-title (String): the title of the web content.
+browser-main-window-mac-window-titles =
+    .data-title-default = { -brand-full-name }
+    .data-title-private = { -brand-full-name } — Private Browsing
+    .data-content-title-default = { $content-title }
+    .data-content-title-private = { $content-title } — Private Browsing
+# This gets set as the initial title, and is overridden as soon as we start
+# updating the titlebar based on loaded tabs or private browsing state.
+# This should match the `data-title-default` attribute in both
+# `browser-main-window` and `browser-main-window-mac`.
+browser-main-window-title = { -brand-full-name }
+# The non-variable portion of this MUST match the translation of
+# "PRIVATE_BROWSING_SHORTCUT_TITLE" in custom.properties
+private-browsing-shortcut-text-2 = { -brand-shortcut-name } Private Browsing
+
+##
+
+urlbar-identity-button =
+    .aria-label = View site information
+
+## Tooltips for images appearing in the address bar
+
+urlbar-services-notification-anchor =
+    .tooltiptext = Open install message panel
+urlbar-web-notification-anchor =
+    .tooltiptext = Change whether you can receive notifications from the site
+urlbar-midi-notification-anchor =
+    .tooltiptext = Open MIDI panel
+urlbar-eme-notification-anchor =
+    .tooltiptext = Manage use of DRM software
+urlbar-web-authn-anchor =
+    .tooltiptext = Open Web Authentication panel
+urlbar-canvas-notification-anchor =
+    .tooltiptext = Manage canvas extraction permission
+urlbar-web-rtc-share-microphone-notification-anchor =
+    .tooltiptext = Manage sharing your microphone with the site
+urlbar-default-notification-anchor =
+    .tooltiptext = Open message panel
+urlbar-geolocation-notification-anchor =
+    .tooltiptext = Open location request panel
+urlbar-xr-notification-anchor =
+    .tooltiptext = Open virtual reality permission panel
+urlbar-storage-access-anchor =
+    .tooltiptext = Open browsing activity permission panel
+urlbar-web-rtc-share-screen-notification-anchor =
+    .tooltiptext = Manage sharing your windows or screen with the site
+urlbar-indexed-db-notification-anchor =
+    .tooltiptext = Open offline storage message panel
+urlbar-password-notification-anchor =
+    .tooltiptext = Open save password message panel
+urlbar-plugins-notification-anchor =
+    .tooltiptext = Manage plug-in use
+urlbar-web-rtc-share-devices-notification-anchor =
+    .tooltiptext = Manage sharing your camera and/or microphone with the site
+# "Speakers" is used in a general sense that might include headphones or
+# another audio output connection.
+urlbar-web-rtc-share-speaker-notification-anchor =
+    .tooltiptext = Manage sharing other speakers with the site
+urlbar-autoplay-notification-anchor =
+    .tooltiptext = Open autoplay panel
+urlbar-persistent-storage-notification-anchor =
+    .tooltiptext = Store data in Persistent Storage
+urlbar-addons-notification-anchor =
+    .tooltiptext = Open add-on installation message panel
+urlbar-tip-help-icon =
+    .title = Get help
+urlbar-search-tips-confirm = Okay, Got It
+urlbar-search-tips-confirm-short = Got it
+# Read out before Urlbar Tip text content so screenreader users know the
+# subsequent text is a tip offered by the browser. It should end in a colon or
+# localized equivalent.
+urlbar-tip-icon-description =
+    .alt = Tip:
+urlbar-result-menu-button =
+    .title = Open menu
+urlbar-result-menu-button-feedback = Feedback
+    .title = Open menu
+urlbar-result-menu-learn-more =
+    .label = Learn more
+    .accesskey = L
+urlbar-result-menu-remove-from-history =
+    .label = Remove from history
+    .accesskey = R
+urlbar-result-menu-tip-get-help =
+    .label = Get help
+    .accesskey = h
+
+## Prompts users to use the Urlbar when they open a new tab or visit the
+## homepage of their default search engine.
+## Variables:
+##  $engineName (String): The name of the user's default search engine. e.g. "Google" or "DuckDuckGo".
+
+urlbar-search-tips-onboard = Type less, find more: Search { $engineName } right from your address bar.
+urlbar-search-tips-redirect-2 = Start your search in the address bar to see suggestions from { $engineName } and your browsing history.
+# Make sure to match the name of the Search panel in settings.
+urlbar-search-tips-persist = Searching just got simpler. Try making your search more specific here in the address bar. To show the URL instead, visit Search, in settings.
+# Prompts users to use the Urlbar when they are typing in the domain of a
+# search engine, e.g. google.com or amazon.com.
+urlbar-tabtosearch-onboard = Select this shortcut to find what you need faster.
+
+## Local search mode indicator labels in the urlbar
+
+urlbar-search-mode-bookmarks = Bookmarks
+urlbar-search-mode-tabs = Tabs
+urlbar-search-mode-history = History
+urlbar-search-mode-actions = Actions
+
+##
+
+urlbar-geolocation-blocked =
+    .tooltiptext = You have blocked location information for this web site.
+urlbar-xr-blocked =
+    .tooltiptext = You have blocked virtual reality device access for this web site.
+urlbar-web-notifications-blocked =
+    .tooltiptext = You have blocked notifications for this web site.
+urlbar-camera-blocked =
+    .tooltiptext = You have blocked your camera for this web site.
+urlbar-microphone-blocked =
+    .tooltiptext = You have blocked your microphone for this web site.
+urlbar-screen-blocked =
+    .tooltiptext = You have blocked this web site from sharing your screen.
+urlbar-persistent-storage-blocked =
+    .tooltiptext = You have blocked persistent storage for this web site.
+urlbar-popup-blocked =
+    .tooltiptext = You have blocked pop-ups for this web site.
+urlbar-autoplay-media-blocked =
+    .tooltiptext = You have blocked autoplay media with sound for this web site.
+urlbar-canvas-blocked =
+    .tooltiptext = You have blocked canvas data extraction for this web site.
+urlbar-midi-blocked =
+    .tooltiptext = You have blocked MIDI access for this web site.
+urlbar-install-blocked =
+    .tooltiptext = You have blocked add-on installation for this web site.
+# Variables
+#   $shortcut (String) - A keyboard shortcut for the edit bookmark command.
+urlbar-star-edit-bookmark =
+    .tooltiptext = Edit this bookmark ({ $shortcut })
+# Variables
+#   $shortcut (String) - A keyboard shortcut for the add bookmark command.
+urlbar-star-add-bookmark =
+    .tooltiptext = Bookmark this page ({ $shortcut })
+
+## Page Action Context Menu
+
+page-action-manage-extension2 =
+    .label = Manage Extension…
+    .accesskey = E
+page-action-remove-extension2 =
+    .label = Remove Extension
+    .accesskey = v
+
+## Auto-hide Context Menu
+
+full-screen-autohide =
+    .label = Hide Toolbars
+    .accesskey = H
+full-screen-exit =
+    .label = Exit Full Screen Mode
+    .accesskey = F
+
+## Search Engine selection buttons (one-offs)
+
+# This string prompts the user to use the list of search shortcuts in
+# the Urlbar and searchbar.
+search-one-offs-with-title = This time, search with:
+search-one-offs-change-settings-compact-button =
+    .tooltiptext = Change search settings
+search-one-offs-context-open-new-tab =
+    .label = Search in New Tab
+    .accesskey = T
+search-one-offs-context-set-as-default =
+    .label = Set as Default Search Engine
+    .accesskey = D
+search-one-offs-context-set-as-default-private =
+    .label = Set as Default Search Engine for Private Windows
+    .accesskey = P
+# Search engine one-off buttons with an @alias shortcut/keyword.
+# Variables:
+#  $engineName (String): The name of the engine.
+#  $alias (String): The @alias shortcut/keyword.
+search-one-offs-engine-with-alias =
+    .tooltiptext = { $engineName } ({ $alias })
+# Shown when adding new engines from the address bar shortcut buttons or context
+# menu, or from the search bar shortcut buttons.
+# Variables:
+#  $engineName (String): The name of the engine.
+search-one-offs-add-engine =
+    .label = Add “{ $engineName }”
+    .tooltiptext = Add search engine “{ $engineName }”
+    .aria-label = Add search engine “{ $engineName }”
+# When more than 5 engines are offered by a web page, they are grouped in a
+# submenu using this as its label.
+search-one-offs-add-engine-menu =
+    .label = Add search engine
+
+## Local search mode one-off buttons
+## Variables:
+##  $restrict (String): The restriction token corresponding to the search mode.
+##    Restriction tokens are special characters users can type in the urlbar to
+##    restrict their searches to certain sources (e.g., "*" to search only
+##    bookmarks).
+
+search-one-offs-bookmarks =
+    .tooltiptext = Bookmarks ({ $restrict })
+search-one-offs-tabs =
+    .tooltiptext = Tabs ({ $restrict })
+search-one-offs-history =
+    .tooltiptext = History ({ $restrict })
+search-one-offs-actions =
+    .tooltiptext = Actions ({ $restrict })
+
+## QuickActions are shown in the urlbar as the user types a matching string
+## The -cmd- strings are comma separated list of keywords that will match
+## the action.
+
+# Opens the about:addons page in the home / recommendations section
+quickactions-addons = View Add-ons
+quickactions-cmd-addons2 = add-ons
+# Opens the bookmarks library window
+quickactions-bookmarks2 = Manage bookmarks
+quickactions-cmd-bookmarks = bookmarks
+# Opens a SUMO article explaining how to clear history
+quickactions-clearhistory = Clear History
+quickactions-cmd-clearhistory = clear history
+# Opens about:downloads page
+quickactions-downloads2 = View downloads
+quickactions-cmd-downloads = downloads
+# Opens about:addons page in the extensions section
+quickactions-extensions = Manage extensions
+quickactions-cmd-extensions = extensions
+# Opens the devtools web inspector
+quickactions-inspector2 = Open Developer Tools
+quickactions-cmd-inspector = inspector, devtools
+# Opens about:logins
+quickactions-logins2 = Manage passwords
+quickactions-cmd-logins = logins, passwords
+# Opens about:addons page in the plugins section
+quickactions-plugins = Manage plugins
+quickactions-cmd-plugins = plugins
+# Opens the print dialog
+quickactions-print2 = Print page
+quickactions-cmd-print = print
+# Opens the print dialog at the save to PDF option
+quickactions-savepdf = Save page as PDF
+quickactions-cmd-savepdf = pdf
+# Opens a new private browsing window
+quickactions-private2 = Open private window
+quickactions-cmd-private = private browsing
+# Opens a SUMO article explaining how to refresh
+quickactions-refresh = Refresh { -brand-short-name }
+quickactions-cmd-refresh = refresh
+# Restarts the browser
+quickactions-restart = Restart { -brand-short-name }
+quickactions-cmd-restart = restart
+# Opens the screenshot tool
+quickactions-screenshot3 = Take a screenshot
+quickactions-cmd-screenshot = screenshot
+# Opens about:preferences
+quickactions-settings2 = Manage settings
+quickactions-cmd-settings = settings, preferences, options
+# Opens about:addons page in the themes section
+quickactions-themes = Manage themes
+quickactions-cmd-themes = themes
+# Opens a SUMO article explaining how to update the browser
+quickactions-update = Update { -brand-short-name }
+quickactions-cmd-update = update
+# Opens the view-source UI with current pages source
+quickactions-viewsource2 = View Page Source
+quickactions-cmd-viewsource = view source, source
+# Tooltip text for the help button shown in the result.
+quickactions-learn-more =
+    .title = Learn more about Quick actions
+
+## Bookmark Panel
+
+bookmarks-add-bookmark = Add bookmark
+bookmarks-edit-bookmark = Edit bookmark
+bookmark-panel-cancel =
+    .label = Cancel
+    .accesskey = C
+# Variables:
+#  $count (number): number of bookmarks that will be removed
+bookmark-panel-remove =
+    .label =
+        { $count ->
+            [1] Remove bookmark
+           *[other] Remove { $count } bookmarks
+        }
+    .accesskey = R
+bookmark-panel-show-editor-checkbox =
+    .label = Show editor when saving
+    .accesskey = S
+bookmark-panel-save-button =
+    .label = Save
+# Width of the bookmark panel.
+# Should be large enough to fully display the Done and
+# Cancel/Remove Bookmark buttons.
+bookmark-panel =
+    .style = min-width: 23em
+
+## Identity Panel
+
+# Variables
+#  $host (String): the hostname of the site that is being displayed.
+identity-site-information = Site information for { $host }
+# Variables
+#  $host (String): the hostname of the site that is being displayed.
+identity-header-security-with-host =
+    .title = Connection security for { $host }
+identity-connection-not-secure = Connection not secure
+identity-connection-secure = Connection secure
+identity-connection-failure = Connection failure
+identity-connection-internal = This is a secure { -brand-short-name } page.
+identity-connection-file = This page is stored on your computer.
+identity-connection-associated = This page is loaded from another page.
+identity-extension-page = This page is loaded from an extension.
+identity-active-blocked = { -brand-short-name } has blocked parts of this page that are not secure.
+identity-custom-root = Connection verified by a certificate issuer that is not recognised by Mozilla.
+identity-passive-loaded = Parts of this page are not secure (such as images).
+identity-active-loaded = You have disabled protection on this page.
+identity-weak-encryption = This page uses weak encryption.
+identity-insecure-login-forms = Logins entered on this page could be compromised.
+identity-https-only-connection-upgraded = (upgraded to HTTPS)
+identity-https-only-label = HTTPS-Only Mode
+identity-https-only-label2 = Automatically upgrade this site to a secure connection
+identity-https-only-dropdown-on =
+    .label = On
+identity-https-only-dropdown-off =
+    .label = Off
+identity-https-only-dropdown-off-temporarily =
+    .label = Off temporarily
+identity-https-only-info-turn-on2 = Turn on HTTPS-Only Mode for this site if you want { -brand-short-name } to upgrade the connection when possible.
+identity-https-only-info-turn-off2 = If the page seems broken, you may want to turn off HTTPS-Only Mode for this site to reload using insecure HTTP.
+identity-https-only-info-turn-on3 = Turn on HTTPS upgrades for this site if you want { -brand-short-name } to upgrade the connection when possible.
+identity-https-only-info-turn-off3 = If the page seems broken, you may want to turn off HTTPS upgrades for this site to reload using insecure HTTP.
+identity-https-only-info-no-upgrade = Unable to upgrade connection from HTTP.
+identity-permissions-storage-access-header = Cross-site cookies
+identity-permissions-storage-access-hint = These parties can use cross-site cookies and site data while you are on this site.
+identity-permissions-storage-access-learn-more = Learn more
+identity-permissions-reload-hint = You may need to reload the page for changes to apply.
+identity-clear-site-data =
+    .label = Clear cookies and site data…
+identity-connection-not-secure-security-view = You are not securely connected to this site.
+identity-connection-verified = You are securely connected to this site.
+identity-ev-owner-label = Certificate issued to:
+identity-description-custom-root2 = Mozilla does not recognise this certificate issuer. It may have been added from your operating system or by an administrator.
+identity-remove-cert-exception =
+    .label = Remove Exception
+    .accesskey = R
+identity-description-insecure = Your connection to this site is not private. Information you submit could be viewed by others (like passwords, messages, credit cards, etc.).
+identity-description-insecure-login-forms = The login information you enter on this page is not secure and could be compromised.
+identity-description-weak-cipher-intro = Your connection to this web site uses weak encryption and is not private.
+identity-description-weak-cipher-risk = Other people can view your information or modify the web site’s behaviour.
+identity-description-active-blocked2 = { -brand-short-name } has blocked parts of this page that are not secure.
+identity-description-passive-loaded = Your connection is not private and information you share with the site could be viewed by others.
+identity-description-passive-loaded-insecure2 = This web site contains content that is not secure (such as images).
+identity-description-passive-loaded-mixed2 = Although { -brand-short-name } has blocked some content, there is still content on the page that is not secure (such as images).
+identity-description-active-loaded = This web site contains content that is not secure (such as scripts) and your connection to it is not private.
+identity-description-active-loaded-insecure = Information you share with this site could be viewed by others (like passwords, messages, credit cards, etc.).
+identity-disable-mixed-content-blocking =
+    .label = Disable protection for now
+    .accesskey = D
+identity-enable-mixed-content-blocking =
+    .label = Enable protection
+    .accesskey = E
+identity-more-info-link-text =
+    .label = More information
+
+## Window controls
+
+browser-window-minimize-button =
+    .tooltiptext = Minimise
+browser-window-maximize-button =
+    .tooltiptext = Maximise
+browser-window-restore-down-button =
+    .tooltiptext = Restore Down
+browser-window-close-button =
+    .tooltiptext = Close
+
+## Tab actions
+
+# This label should be written in all capital letters if your locale supports them.
+browser-tab-audio-playing2 = PLAYING
+# This label should be written in all capital letters if your locale supports them.
+browser-tab-audio-muted2 = MUTED
+# This label should be written in all capital letters if your locale supports them.
+browser-tab-audio-blocked = AUTOPLAY BLOCKED
+# This label should be written in all capital letters if your locale supports them.
+browser-tab-audio-pip = PICTURE-IN-PICTURE
+
+## These labels should be written in all capital letters if your locale supports them.
+## Variables:
+##  $count (number): number of affected tabs
+
+browser-tab-mute =
+    { $count ->
+        [1] MUTE TAB
+       *[other] MUTE { $count } TABS
+    }
+browser-tab-unmute =
+    { $count ->
+        [1] UNMUTE TAB
+       *[other] UNMUTE { $count } TABS
+    }
+browser-tab-unblock =
+    { $count ->
+        [1] PLAY TAB
+       *[other] PLAY { $count } TABS
+    }
+
+## Bookmarks toolbar items
+
+browser-import-button2 =
+    .label = Import bookmarks…
+    .tooltiptext = Import bookmarks from another browser to { -brand-short-name }.
+bookmarks-toolbar-empty-message = For quick access, place your bookmarks here on the bookmarks toolbar. <a data-l10n-name="manage-bookmarks">Manage bookmarks…</a>
+
+## WebRTC Pop-up notifications
+
+popup-select-camera-device =
+    .value = Camera:
+    .accesskey = C
+popup-select-camera-icon =
+    .tooltiptext = Camera
+popup-select-microphone-device =
+    .value = Microphone:
+    .accesskey = M
+popup-select-microphone-icon =
+    .tooltiptext = Microphone
+popup-select-speaker-icon =
+    .tooltiptext = Speakers
+popup-select-window-or-screen =
+    .label = Window or screen:
+    .accesskey = W
+popup-all-windows-shared = All visible windows on your screen will be shared.
+
+## WebRTC window or screen share tab switch warning
+
+sharing-warning-window = You are sharing { -brand-short-name }. Other people can see when you switch to a new tab.
+sharing-warning-screen = You are sharing your entire screen. Other people can see when you switch to a new tab.
+sharing-warning-proceed-to-tab =
+    .label = Proceed to Tab
+sharing-warning-disable-for-session =
+    .label = Disable sharing protection for this session
+
+## DevTools F12 popup
+
+enable-devtools-popup-description2 = To use the F12 shortcut, first open DevTools via the Browser Tools menu.
+
+## URL Bar
+
+# This string is used as an accessible name to the "X" button that cancels a custom search mode (i.e. exits the Amazon.com search mode).
+urlbar-search-mode-indicator-close =
+    .aria-label = Close
+# This placeholder is used when not in search mode and the user's default search
+# engine is unknown.
+urlbar-placeholder =
+    .placeholder = Search or enter address
+# This placeholder is used in search mode with search engines that search the
+# entire web.
+# Variables
+#  $name (String): the name of a search engine that searches the entire Web
+#  (e.g. Google).
+urlbar-placeholder-search-mode-web-2 =
+    .placeholder = Search the Web
+    .aria-label = Search with { $name }
+# This placeholder is used in search mode with search engines that search a
+# specific site (e.g., Amazon).
+# Variables
+#  $name (String): the name of a search engine that searches a specific site
+#  (e.g. Amazon).
+urlbar-placeholder-search-mode-other-engine =
+    .placeholder = Enter search terms
+    .aria-label = Search { $name }
+# This placeholder is used when searching bookmarks.
+urlbar-placeholder-search-mode-other-bookmarks =
+    .placeholder = Enter search terms
+    .aria-label = Search bookmarks
+# This placeholder is used when searching history.
+urlbar-placeholder-search-mode-other-history =
+    .placeholder = Enter search terms
+    .aria-label = Search history
+# This placeholder is used when searching open tabs.
+urlbar-placeholder-search-mode-other-tabs =
+    .placeholder = Enter search terms
+    .aria-label = Search tabs
+# This placeholder is used when searching quick actions.
+urlbar-placeholder-search-mode-other-actions =
+    .placeholder = Enter search terms
+    .aria-label = Search actions
+# Variables
+#  $name (String): the name of the user's default search engine
+urlbar-placeholder-with-name =
+    .placeholder = Search with { $name } or enter address
+# Variables
+#  $component (String): the name of the component which forces remote control.
+#    Example: "DevTools", "Marionette", "RemoteAgent".
+urlbar-remote-control-notification-anchor2 =
+    .tooltiptext = Browser is under remote control (reason: { $component })
+urlbar-permissions-granted =
+    .tooltiptext = You have granted this web site additional permissions.
+urlbar-switch-to-tab =
+    .value = Switch to tab:
+# Used to indicate that a selected autocomplete entry is provided by an extension.
+urlbar-extension =
+    .value = Extension:
+urlbar-go-button =
+    .tooltiptext = Go to the address in the Location Bar
+urlbar-page-action-button =
+    .tooltiptext = Page actions
+
+## Action text shown in urlbar results, usually appended after the search
+## string or the url, like "result value - action text".
+
+# Used when the private browsing engine differs from the default engine.
+# The "with" format was chosen because the search engine name can end with
+# "Search", and we would like to avoid strings like "Search MSN Search".
+# Variables
+#  $engine (String): the name of a search engine
+urlbar-result-action-search-in-private-w-engine = Search with { $engine } in a Private Window
+# Used when the private browsing engine is the same as the default engine.
+urlbar-result-action-search-in-private = Search in a Private Window
+# The "with" format was chosen because the search engine name can end with
+# "Search", and we would like to avoid strings like "Search MSN Search".
+# Variables
+#  $engine (String): the name of a search engine
+urlbar-result-action-search-w-engine = Search with { $engine }
+urlbar-result-action-sponsored = Sponsored
+urlbar-result-action-switch-tab = Switch to Tab
+urlbar-result-action-visit = Visit
+# Allows the user to visit a URL that was previously copied to the clipboard.
+urlbar-result-action-visit-from-clipboard = Visit from clipboard
+# Directs a user to press the Tab key to perform a search with the specified
+# engine.
+# Variables
+#  $engine (String): the name of a search engine that searches the entire Web
+#  (e.g. Google).
+urlbar-result-action-before-tabtosearch-web = Press Tab to search with { $engine }
+# Directs a user to press the Tab key to perform a search with the specified
+# engine.
+# Variables
+#  $engine (String): the name of a search engine that searches a specific site
+#  (e.g. Amazon).
+urlbar-result-action-before-tabtosearch-other = Press Tab to search { $engine }
+# Variables
+#  $engine (String): the name of a search engine that searches the entire Web
+#  (e.g. Google).
+urlbar-result-action-tabtosearch-web = Search with { $engine } directly from the address bar
+# Variables
+#  $engine (String): the name of a search engine that searches a specific site
+#  (e.g. Amazon).
+urlbar-result-action-tabtosearch-other-engine = Search { $engine } directly from the address bar
+# Action text for copying to clipboard.
+urlbar-result-action-copy-to-clipboard = Copy
+# Shows the result of a formula expression being calculated, the last = sign will be shown
+# as part of the result (e.g. "= 2").
+# Variables
+#  $result (String): the string representation for a formula result
+urlbar-result-action-calculator-result = = { $result }
+
+## Action text shown in urlbar results, usually appended after the search
+## string or the url, like "result value - action text".
+## In these actions "Search" is a verb, followed by where the search is performed.
+
+urlbar-result-action-search-bookmarks = Search Bookmarks
+urlbar-result-action-search-history = Search History
+urlbar-result-action-search-tabs = Search Tabs
+urlbar-result-action-search-actions = Search Actions
+
+## Labels shown above groups of urlbar results
+
+# A label shown above the "Firefox Suggest" (bookmarks/history) group in the
+# urlbar results.
+urlbar-group-firefox-suggest =
+    .label = { -firefox-suggest-brand-name }
+# A label shown above the search suggestions group in the urlbar results. It
+# should use sentence case.
+# Variables
+#  $engine (String): the name of the search engine providing the suggestions
+urlbar-group-search-suggestions =
+    .label = { $engine } suggestions
+# A label shown above Quick Actions in the urlbar results.
+urlbar-group-quickactions =
+    .label = Quick Actions
+# A label shown above the recent searches group in the urlbar results.
+# Variables
+#  $engine (String): the name of the search engine used to search.
+urlbar-group-recent-searches =
+    .label = Recent Searches
+
+## Reader View toolbar buttons
+
+# This should match menu-view-enter-readerview in menubar.ftl
+reader-view-enter-button =
+    .aria-label = Enter Reader View
+# This should match menu-view-close-readerview in menubar.ftl
+reader-view-close-button =
+    .aria-label = Close Reader View
+
+## Picture-in-Picture urlbar button
+## Variables:
+##   $shortcut (String) - Keyboard shortcut to execute the command.
+
+picture-in-picture-urlbar-button-open =
+    .tooltiptext = Open Picture-in-Picture ({ $shortcut })
+picture-in-picture-urlbar-button-close =
+    .tooltiptext = Close Picture-in-Picture ({ $shortcut })
+picture-in-picture-panel-header = Picture-in-Picture
+picture-in-picture-panel-headline = This web site does not recommend Picture-in-Picture
+picture-in-picture-panel-body = Videos might not display as the developer intended while Picture-in-Picture is enabled.
+picture-in-picture-enable-toggle =
+    .label = Enable anyway
+
+## Full Screen and Pointer Lock UI
+
+# Please ensure that the domain stays in the `<span data-l10n-name="domain">` markup.
+# Variables
+#  $domain (String): the domain that is full screen, e.g. "mozilla.org"
+fullscreen-warning-domain = <span data-l10n-name="domain">{ $domain }</span> is now full screen
+fullscreen-warning-no-domain = This document is now full screen
+fullscreen-exit-button = Exit Full Screen (Esc)
+# "esc" is lowercase on mac keyboards, but uppercase elsewhere.
+fullscreen-exit-mac-button = Exit Full Screen (esc)
+# Please ensure that the domain stays in the `<span data-l10n-name="domain">` markup.
+# Variables
+#  $domain (String): the domain that is using pointer-lock, e.g. "mozilla.org"
+pointerlock-warning-domain = <span data-l10n-name="domain">{ $domain }</span> has control of your pointer. Press Esc to take back control.
+pointerlock-warning-no-domain = This document has control of your pointer. Press Esc to take back control.
+
+## Bookmarks panels, menus and toolbar
+
+bookmarks-manage-bookmarks =
+    .label = Manage bookmarks
+bookmarks-recent-bookmarks-panel-subheader = Recent bookmarks
+bookmarks-toolbar-chevron =
+    .tooltiptext = Show more bookmarks
+bookmarks-sidebar-content =
+    .aria-label = Bookmarks
+bookmarks-menu-button =
+    .label = Bookmarks menu
+bookmarks-other-bookmarks-menu =
+    .label = Other bookmarks
+bookmarks-mobile-bookmarks-menu =
+    .label = Mobile bookmarks
+
+## Variables:
+##   $isVisible (boolean): if the specific element (e.g. bookmarks sidebar,
+##                         bookmarks toolbar, etc.) is visible or not.
+
+bookmarks-tools-sidebar-visibility =
+    .label =
+        { $isVisible ->
+            [true] Hide bookmarks sidebar
+           *[other] View bookmarks sidebar
+        }
+bookmarks-tools-toolbar-visibility-menuitem =
+    .label =
+        { $isVisible ->
+            [true] Hide Bookmarks Toolbar
+           *[other] View Bookmarks Toolbar
+        }
+bookmarks-tools-toolbar-visibility-panel =
+    .label =
+        { $isVisible ->
+            [true] Hide bookmarks toolbar
+           *[other] Show bookmarks toolbar
+        }
+bookmarks-tools-menu-button-visibility =
+    .label =
+        { $isVisible ->
+            [true] Remove bookmarks menu from toolbar
+           *[other] Add bookmarks menu to toolbar
+        }
+
+##
+
+bookmarks-search =
+    .label = Search bookmarks
+bookmarks-tools =
+    .label = Bookmarking Tools
+bookmarks-subview-edit-bookmark =
+    .label = Edit this bookmark…
+# The aria-label is a spoken label that should not include the word "toolbar" or
+# such, because screen readers already know that this container is a toolbar.
+# This avoids double-speaking.
+bookmarks-toolbar =
+    .toolbarname = Bookmarks Toolbar
+    .accesskey = B
+    .aria-label = Bookmarks
+bookmarks-toolbar-menu =
+    .label = Bookmarks toolbar
+bookmarks-toolbar-placeholder =
+    .title = Bookmarks toolbar items
+bookmarks-toolbar-placeholder-button =
+    .label = Bookmarks toolbar items
+# "Bookmark" is a verb, as in "Add current tab to bookmarks".
+bookmarks-subview-bookmark-tab =
+    .label = Bookmark current tab…
+
+## Library Panel items
+
+library-bookmarks-menu =
+    .label = Bookmarks
+library-recent-activity-title =
+    .value = Recent Activity
+
+## Pocket toolbar button
+
+save-to-pocket-button =
+    .label = Save to { -pocket-brand-name }
+    .tooltiptext = Save to { -pocket-brand-name }
+
+## Repair text encoding toolbar button
+
+repair-text-encoding-button =
+    .label = Repair text encoding
+    .tooltiptext = Guess correct text encoding from page content
+
+## Customize Toolbar Buttons
+
+# Variables:
+#  $shortcut (String): keyboard shortcut to open settings (only on macOS)
+toolbar-settings-button =
+    .label = Settings
+    .tooltiptext =
+        { PLATFORM() ->
+            [macos] Open settings ({ $shortcut })
+           *[other] Open settings
+        }
+toolbar-overflow-customize-button =
+    .label = Customise toolbar…
+    .accesskey = C
+toolbar-button-email-link =
+    .label = Email link
+    .tooltiptext = Email a link to this page
+toolbar-button-logins =
+    .label = Passwords
+    .tooltiptext = View and manage your saved passwords
+# Variables:
+#  $shortcut (String): keyboard shortcut to save a copy of the page
+toolbar-button-save-page =
+    .label = Save page
+    .tooltiptext = Save this page ({ $shortcut })
+# Variables:
+#  $shortcut (String): keyboard shortcut to open a local file
+toolbar-button-open-file =
+    .label = Open file
+    .tooltiptext = Open a file ({ $shortcut })
+toolbar-button-synced-tabs =
+    .label = Synced tabs
+    .tooltiptext = Show tabs from other devices
+# Variables
+# $shortcut (string) - Keyboard shortcut to open a new private browsing window
+toolbar-button-new-private-window =
+    .label = New private window
+    .tooltiptext = Open a new private browsing window ({ $shortcut })
+
+## EME notification panel
+
+eme-notifications-drm-content-playing = Some audio or video on this site uses DRM software, which may limit what { -brand-short-name } can let you do with it.
+eme-notifications-drm-content-playing-manage = Manage settings
+eme-notifications-drm-content-playing-manage-accesskey = M
+eme-notifications-drm-content-playing-dismiss = Dismiss
+eme-notifications-drm-content-playing-dismiss-accesskey = D
+
+## Password save/update panel
+
+panel-save-update-username = Username
+panel-save-update-password = Password
+
+##
+
+# "More" item in macOS share menu
+menu-share-more =
+    .label = More…
+ui-tour-info-panel-close =
+    .tooltiptext = Close
+
+## Variables:
+##  $uriHost (String): URI host for which the popup was allowed or blocked.
+
+popups-infobar-allow =
+    .label = Allow pop-ups for { $uriHost }
+    .accesskey = p
+popups-infobar-block =
+    .label = Block pop-ups for { $uriHost }
+    .accesskey = p
+
+##
+
+popups-infobar-dont-show-message =
+    .label = Don’t show this message when pop-ups are blocked
+    .accesskey = D
+edit-popup-settings =
+    .label = Manage pop-up settings…
+    .accesskey = M
+picture-in-picture-hide-toggle =
+    .label = Hide Picture-in-Picture Toggle
+    .accesskey = H
+
+## Since the default position for PiP controls does not change for RTL layout,
+## right-to-left languages should use "Left" and "Right" as in the English strings,
+
+picture-in-picture-move-toggle-right =
+    .label = Move Picture-in-Picture Toggle to Right Side
+    .accesskey = R
+picture-in-picture-move-toggle-left =
+    .label = Move Picture-in-Picture Toggle to Left Side
+    .accesskey = L
+
+##
+
+
+# Navigator Toolbox
+
+# This string is a spoken label that should not include
+# the word "toolbar" or such, because screen readers already know that
+# this container is a toolbar. This avoids double-speaking.
+navbar-accessible =
+    .aria-label = Navigation
+navbar-downloads =
+    .label = Downloads
+navbar-overflow =
+    .tooltiptext = More tools…
+# Variables:
+#   $shortcut (String): keyboard shortcut to print the page
+navbar-print =
+    .label = Print
+    .tooltiptext = Print this page… ({ $shortcut })
+navbar-home =
+    .label = Home
+    .tooltiptext = { -brand-short-name } Home Page
+navbar-library =
+    .label = Library
+    .tooltiptext = View history, saved bookmarks and more
+navbar-search =
+    .title = Search
+# Name for the tabs toolbar as spoken by screen readers. The word
+# "toolbar" is appended automatically and should not be included in
+# in the string
+tabs-toolbar =
+    .aria-label = Browser tabs
+tabs-toolbar-new-tab =
+    .label = New Tab
+tabs-toolbar-list-all-tabs =
+    .label = List all tabs
+    .tooltiptext = List all tabs
+
+## Infobar shown at startup to suggest session-restore
+
+# <img data-l10n-name="icon"/> will be replaced by the application menu icon
+restore-session-startup-suggestion-message = <strong>Open previous tabs?</strong> You can restore your previous session from the { -brand-short-name } application menu <img data-l10n-name="icon"/>, under History.
+restore-session-startup-suggestion-button = Show me how
+
+## Mozilla data reporting notification (Telemetry, Firefox Health Report, etc)
+
+data-reporting-notification-message = { -brand-short-name } automatically sends some data to { -vendor-short-name } so that we can improve your experience.
+data-reporting-notification-button =
+    .label = Choose What I Share
+    .accesskey = C
+# Label for the indicator shown in the private browsing window titlebar.
+private-browsing-indicator-label = Private browsing
+
+## Unified extensions (toolbar) button
+
+unified-extensions-button =
+    .label = Extensions
+    .tooltiptext = Extensions
+
+## Unified extensions button when permission(s) are needed.
+## Note that the new line is intentionally part of the tooltip.
+
+unified-extensions-button-permissions-needed =
+    .label = Extensions
+    .tooltiptext =
+        Extensions
+        Permissions needed
+
+## Unified extensions button when some extensions are quarantined.
+## Note that the new line is intentionally part of the tooltip.
+
+unified-extensions-button-quarantined =
+    .label = Extensions
+    .tooltiptext =
+        Extensions
+        Some extensions are not allowed
+
+## Private browsing reset button
+
+reset-pbm-toolbar-button =
+    .label = End Private Session
+    .tooltiptext = End Private Session
+reset-pbm-panel-heading = End your private session?
+reset-pbm-panel-description = Close all private tabs and delete history, cookies, and all other site data.
+reset-pbm-panel-always-ask-checkbox =
+    .label = Always ask me
+    .accesskey = A
+reset-pbm-panel-cancel-button =
+    .label = Cancel
+    .accesskey = C
+reset-pbm-panel-confirm-button =
+    .label = Delete session data
+    .accesskey = D
+reset-pbm-panel-complete = Private session data deleted
+
+## Autorefresh blocker
+
+refresh-blocked-refresh-label = { -brand-short-name } prevented this page from automatically reloading.
+refresh-blocked-redirect-label = { -brand-short-name } prevented this page from automatically redirecting to another page.
+refresh-blocked-allow =
+    .label = Allow
+    .accesskey = A
+
+## Firefox Relay integration
+
+firefox-relay-offer-why-to-use-relay = Our secure, easy-to-use masks protect your identity and prevent spam by hiding your email address.
+# Variables:
+#  $useremail (String): user email that will receive messages
+firefox-relay-offer-what-relay-provides = All emails sent to your email masks will be forwarded to <strong>{ $useremail }</strong> (unless you decide to block them).
+firefox-relay-offer-legal-notice = By clicking “Use email mask”, you agree to the <label data-l10n-name="tos-url">Terms of Service</label> and <label data-l10n-name="privacy-url">Privacy Notice</label>.
+
+## Add-on Pop-up Notifications
+
+popup-notification-addon-install-unsigned =
+    .value = (Unverified)
+popup-notification-xpinstall-prompt-learn-more = Learn more about installing add-ons safely
+
+## Pop-up warning
+
+# Variables:
+#   $popupCount (Number): the number of pop-ups blocked.
+popup-warning-message =
+    { $popupCount ->
+        [one] { -brand-short-name } prevented this site from opening a pop-up window.
+       *[other] { -brand-short-name } prevented this site from opening { $popupCount } pop-up windows.
+    }
+# The singular form is left out for English, since the number of blocked pop-ups is always greater than 1.
+# Variables:
+#   $popupCount (Number): the number of pop-ups blocked.
+popup-warning-exceeded-message = { -brand-short-name } prevented this site from opening more than { $popupCount } pop-up windows.
+popup-warning-button =
+    .label =
+        { PLATFORM() ->
+            [windows] Options
+           *[other] Preferences
+        }
+    .accesskey =
+        { PLATFORM() ->
+            [windows] O
+           *[other] P
+        }
+# Variables:
+#   $popupURI (String): the URI for the pop-up window
+popup-show-popup-menuitem =
+    .label = Show “{ $popupURI }”
diff --git a/l10n-en-GB/browser/browser/browserContext.ftl b/l10n-en-GB/browser/browser/browserContext.ftl
new file mode 100644
index 0000000000..20232d66b9
--- /dev/null
+++ b/l10n-en-GB/browser/browser/browserContext.ftl
@@ -0,0 +1,391 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+navbar-tooltip-instruction =
+    .value =
+        { PLATFORM() ->
+            [macos] Pull down to show history
+           *[other] Right-click or pull down to show history
+        }
+
+## Back
+
+# Variables
+#   $shortcut (String) - A keyboard shortcut for the Go Back command.
+main-context-menu-back-2 =
+    .tooltiptext = Go backwards one page ({ $shortcut })
+    .aria-label = Backwards
+    .accesskey = B
+# This menuitem is only visible on macOS
+main-context-menu-back-mac =
+    .label = Backwards
+    .accesskey = B
+navbar-tooltip-back-2 =
+    .value = { main-context-menu-back-2.tooltiptext }
+toolbar-button-back-2 =
+    .label = { main-context-menu-back-2.aria-label }
+
+## Forward
+
+# Variables
+#   $shortcut (String) - A keyboard shortcut for the Go Forward command.
+main-context-menu-forward-2 =
+    .tooltiptext = Go forwards one page ({ $shortcut })
+    .aria-label = Forwards
+    .accesskey = F
+# This menuitem is only visible on macOS
+main-context-menu-forward-mac =
+    .label = Forwards
+    .accesskey = F
+navbar-tooltip-forward-2 =
+    .value = { main-context-menu-forward-2.tooltiptext }
+toolbar-button-forward-2 =
+    .label = { main-context-menu-forward-2.aria-label }
+
+## Reload
+
+main-context-menu-reload =
+    .aria-label = Reload
+    .accesskey = R
+# This menuitem is only visible on macOS
+main-context-menu-reload-mac =
+    .label = Reload
+    .accesskey = R
+toolbar-button-reload =
+    .label = { main-context-menu-reload.aria-label }
+
+## Stop
+
+main-context-menu-stop =
+    .aria-label = Stop
+    .accesskey = S
+# This menuitem is only visible on macOS
+main-context-menu-stop-mac =
+    .label = Stop
+    .accesskey = S
+toolbar-button-stop =
+    .label = { main-context-menu-stop.aria-label }
+
+## Stop-Reload Button
+
+toolbar-button-stop-reload =
+    .title = { main-context-menu-reload.aria-label }
+
+## Firefox Account Button
+
+toolbar-button-fxaccount =
+    .label = { -fxaccount-brand-name(capitalization: "sentence") }
+    .tooltiptext = { -fxaccount-brand-name(capitalization: "sentence") }
+
+## Account toolbar Button
+
+toolbar-button-account =
+    .label = Account
+    .tooltiptext = Account
+
+## Save Page
+
+main-context-menu-page-save =
+    .label = Save Page As…
+    .accesskey = P
+
+## Simple menu items
+
+main-context-menu-bookmark-page =
+    .aria-label = Bookmark Page…
+    .accesskey = m
+    .tooltiptext = Bookmark page
+# This menuitem is only visible on macOS
+# Cannot be shown at the same time as main-context-menu-edit-bookmark-mac,
+# so should probably have the same access key if possible.
+main-context-menu-bookmark-page-mac =
+    .label = Bookmark Page…
+    .accesskey = m
+# This menuitem is only visible on macOS
+# Cannot be shown at the same time as main-context-menu-bookmark-page-mac,
+# so should probably have the same access key if possible.
+main-context-menu-edit-bookmark-mac =
+    .label = Edit Bookmark…
+    .accesskey = m
+# Variables
+#   $shortcut (String) - A keyboard shortcut for the add bookmark command.
+main-context-menu-bookmark-page-with-shortcut =
+    .aria-label = Bookmark Page…
+    .accesskey = m
+    .tooltiptext = Bookmark page ({ $shortcut })
+main-context-menu-edit-bookmark =
+    .aria-label = Edit Bookmark…
+    .accesskey = m
+    .tooltiptext = Edit bookmark
+# Variables
+#   $shortcut (String) - A keyboard shortcut for the edit bookmark command.
+main-context-menu-edit-bookmark-with-shortcut =
+    .aria-label = Edit Bookmark…
+    .accesskey = m
+    .tooltiptext = Edit bookmark ({ $shortcut })
+main-context-menu-open-link =
+    .label = Open Link
+    .accesskey = O
+main-context-menu-open-link-new-tab =
+    .label = Open Link in New Tab
+    .accesskey = T
+main-context-menu-open-link-container-tab =
+    .label = Open Link in New Container Tab
+    .accesskey = w
+main-context-menu-open-link-new-window =
+    .label = Open Link in New Window
+    .accesskey = d
+main-context-menu-open-link-new-private-window =
+    .label = Open Link in New Private Window
+    .accesskey = P
+main-context-menu-bookmark-link-2 =
+    .label = Bookmark Link…
+    .accesskey = B
+main-context-menu-save-link =
+    .label = Save Link As…
+    .accesskey = k
+main-context-menu-save-link-to-pocket =
+    .label = Save Link to { -pocket-brand-name }
+    .accesskey = o
+
+## The access keys for "Copy Link" and "Copy Email Address"
+## should be the same if possible; the two context menu items
+## are mutually exclusive.
+
+main-context-menu-copy-email =
+    .label = Copy Email Address
+    .accesskey = l
+main-context-menu-copy-phone =
+    .label = Copy Phone Number
+    .accesskey = o
+main-context-menu-copy-link-simple =
+    .label = Copy Link
+    .accesskey = L
+# This command copies the link, removing additional
+# query parameters used to track users across sites.
+main-context-menu-strip-on-share-link =
+    .label = Copy Link Without Site Tracking
+    .accesskey = u
+
+## Media (video/audio) controls
+##
+## The accesskey for "Play" and "Pause" are the
+## same because the two context-menu items are
+## mutually exclusive.
+
+main-context-menu-media-play =
+    .label = Play
+    .accesskey = P
+main-context-menu-media-pause =
+    .label = Pause
+    .accesskey = P
+
+##
+
+main-context-menu-media-mute =
+    .label = Mute
+    .accesskey = M
+main-context-menu-media-unmute =
+    .label = Unmute
+    .accesskey = m
+main-context-menu-media-play-speed-2 =
+    .label = Speed
+    .accesskey = d
+main-context-menu-media-play-speed-slow-2 =
+    .label = 0.5×
+main-context-menu-media-play-speed-normal-2 =
+    .label = 1.0×
+main-context-menu-media-play-speed-fast-2 =
+    .label = 1.25×
+main-context-menu-media-play-speed-faster-2 =
+    .label = 1.5×
+main-context-menu-media-play-speed-fastest-2 =
+    .label = 2×
+main-context-menu-media-loop =
+    .label = Loop
+    .accesskey = L
+
+## The access keys for "Show Controls" and "Hide Controls" are the same
+## because the two context-menu items are mutually exclusive.
+
+main-context-menu-media-show-controls =
+    .label = Show Controls
+    .accesskey = C
+main-context-menu-media-hide-controls =
+    .label = Hide Controls
+    .accesskey = C
+
+##
+
+main-context-menu-media-video-fullscreen =
+    .label = Full Screen
+    .accesskey = F
+main-context-menu-media-video-leave-fullscreen =
+    .label = Exit Full Screen
+    .accesskey = u
+# This is used when right-clicking on a video in the
+# content area when the Picture-in-Picture feature is enabled.
+main-context-menu-media-watch-pip =
+    .label = Watch in Picture-in-Picture
+    .accesskey = u
+main-context-menu-image-reload =
+    .label = Reload Image
+    .accesskey = R
+main-context-menu-image-view-new-tab =
+    .label = Open Image in New Tab
+    .accesskey = I
+main-context-menu-video-view-new-tab =
+    .label = Open Video in New Tab
+    .accesskey = i
+main-context-menu-image-copy =
+    .label = Copy Image
+    .accesskey = y
+main-context-menu-image-copy-link =
+    .label = Copy Image Link
+    .accesskey = o
+main-context-menu-video-copy-link =
+    .label = Copy Video Link
+    .accesskey = o
+main-context-menu-audio-copy-link =
+    .label = Copy Audio Link
+    .accesskey = o
+main-context-menu-image-save-as =
+    .label = Save Image As…
+    .accesskey = v
+main-context-menu-image-email =
+    .label = Email Image…
+    .accesskey = g
+main-context-menu-image-set-image-as-background =
+    .label = Set Image as Desktop Background…
+    .accesskey = S
+main-context-menu-image-copy-text =
+    .label = Copy Text From Image
+    .accesskey = x
+main-context-menu-image-info =
+    .label = View Image Info
+    .accesskey = f
+main-context-menu-image-desc =
+    .label = View Description
+    .accesskey = D
+main-context-menu-video-save-as =
+    .label = Save Video As…
+    .accesskey = v
+main-context-menu-audio-save-as =
+    .label = Save Audio As…
+    .accesskey = v
+main-context-menu-video-take-snapshot =
+    .label = Take Snapshot…
+    .accesskey = S
+main-context-menu-video-email =
+    .label = Email Video…
+    .accesskey = a
+main-context-menu-audio-email =
+    .label = Email Audio…
+    .accesskey = a
+main-context-menu-save-to-pocket =
+    .label = Save Page to { -pocket-brand-name }
+    .accesskey = k
+main-context-menu-send-to-device =
+    .label = Send Page to Device
+    .accesskey = n
+
+## The access keys for "Use Saved Login" and "Use Saved Password"
+## should be the same if possible; the two context menu items
+## are mutually exclusive.
+
+main-context-menu-use-saved-login =
+    .label = Use Saved Login
+    .accesskey = o
+# Displayed when there are saved passwords and the user clicks inside a username or password field
+main-context-menu-use-saved-password =
+    .label = Use Saved Password
+    .accesskey = o
+
+##
+
+main-context-menu-use-relay-mask =
+    .label = Use { -relay-brand-short-name } Email Mask
+    .accesskey = E
+main-context-menu-suggest-strong-password =
+    .label = Suggest Strong Password…
+    .accesskey = S
+main-context-menu-manage-logins2 =
+    .label = Manage Logins
+    .accesskey = M
+main-context-menu-manage-passwords =
+    .label = Manage Passwords
+    .accesskey = M
+main-context-menu-keyword =
+    .label = Add a Keyword for this Search…
+    .accesskey = K
+main-context-menu-link-send-to-device =
+    .label = Send Link to Device
+    .accesskey = n
+main-context-menu-frame =
+    .label = This Frame
+    .accesskey = h
+main-context-menu-frame-show-this =
+    .label = Show Only This Frame
+    .accesskey = S
+main-context-menu-frame-open-tab =
+    .label = Open Frame in New Tab
+    .accesskey = T
+main-context-menu-frame-open-window =
+    .label = Open Frame in New Window
+    .accesskey = W
+main-context-menu-frame-reload =
+    .label = Reload Frame
+    .accesskey = R
+main-context-menu-frame-add-bookmark =
+    .label = Bookmark Frame…
+    .accesskey = m
+main-context-menu-frame-save-as =
+    .label = Save Frame As…
+    .accesskey = F
+main-context-menu-frame-print =
+    .label = Print Frame…
+    .accesskey = P
+main-context-menu-frame-view-source =
+    .label = View Frame Source
+    .accesskey = V
+main-context-menu-frame-view-info =
+    .label = View Frame Info
+    .accesskey = I
+main-context-menu-print-selection-2 =
+    .label = Print Selection…
+    .accesskey = r
+main-context-menu-view-selection-source =
+    .label = View Selection Source
+    .accesskey = e
+main-context-menu-take-screenshot =
+    .label = Take Screenshot
+    .accesskey = T
+main-context-menu-take-frame-screenshot =
+    .label = Take Screenshot
+    .accesskey = o
+main-context-menu-view-page-source =
+    .label = View Page Source
+    .accesskey = V
+main-context-menu-bidi-switch-text =
+    .label = Switch Text Direction
+    .accesskey = w
+main-context-menu-bidi-switch-page =
+    .label = Switch Page Direction
+    .accesskey = D
+main-context-menu-inspect =
+    .label = Inspect
+    .accesskey = Q
+main-context-menu-inspect-a11y-properties =
+    .label = Inspect Accessibility Properties
+main-context-menu-eme-learn-more =
+    .label = Learn more about DRM…
+    .accesskey = D
+# Variables
+#   $containerName (String): The name of the current container
+main-context-menu-open-link-in-container-tab =
+    .label = Open Link in New { $containerName } Tab
+    .accesskey = T
+main-context-menu-reveal-password =
+    .label = Reveal Password
+    .accesskey = v
diff --git a/l10n-en-GB/browser/browser/browserSets.ftl b/l10n-en-GB/browser/browser/browserSets.ftl
new file mode 100644
index 0000000000..cfa5b3d44b
--- /dev/null
+++ b/l10n-en-GB/browser/browser/browserSets.ftl
@@ -0,0 +1,218 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+window-minimize-command =
+    .label = Minimise
+
+window-zoom-command =
+    .label = Zoom
+
+window-new-shortcut =
+    .key = N
+
+window-minimize-shortcut =
+    .key = m
+
+close-shortcut =
+    .key = W
+
+tab-new-shortcut =
+    .key = t
+
+location-open-shortcut =
+    .key = l
+
+location-open-shortcut-alt =
+    .key = d
+
+search-focus-shortcut =
+    .key = k
+
+# This shortcut is used in two contexts:
+#   - web search
+#   - find in page
+find-shortcut =
+    .key = f
+
+search-find-again-shortcut =
+    .key = g
+
+search-find-again-shortcut-alt =
+    .keycode = VK_F3
+
+search-find-selection-shortcut =
+    .key = e
+
+# Verify what shortcut for that operation
+# are recommended by the Human Interface Guidelines
+# of each platform for your locale.
+search-focus-shortcut-alt =
+    .key =
+        { PLATFORM() ->
+            [linux] j
+           *[other] e
+        }
+
+# Verify what shortcut for that operation
+# are recommended by the Human Interface Guidelines
+# of each platform for your locale.
+downloads-shortcut =
+    .key =
+        { PLATFORM() ->
+            [linux] y
+           *[other] j
+        }
+
+addons-shortcut =
+    .key = A
+
+file-open-shortcut =
+    .key = o
+
+save-page-shortcut =
+    .key = s
+
+page-source-shortcut =
+    .key = u
+
+# This should match the Option+Command keyboard shortcut letter that Safari
+# and Chrome use for "View Source" on macOS. `page-source-shortcut` above
+# is Firefox's official keyboard shortcut shown in the GUI.
+# Safari variant is an alias provided for the convenience of Safari and Chrome
+# users on macOS. See bug 1398988.
+page-source-shortcut-safari =
+    .key = u
+
+page-info-shortcut =
+    .key = i
+
+print-shortcut =
+    .key = p
+
+mute-toggle-shortcut =
+    .key = M
+
+nav-back-shortcut-alt =
+    .key = [
+
+nav-fwd-shortcut-alt =
+    .key = ]
+
+nav-reload-shortcut =
+    .key = r
+
+# Shortcut available only on macOS.
+nav-stop-shortcut =
+    .key = .
+
+history-show-all-shortcut =
+    .key = H
+
+history-show-all-shortcut-mac =
+    .key = Y
+
+history-sidebar-shortcut =
+    .key = h
+
+full-screen-shortcut =
+    .key = f
+
+reader-mode-toggle-shortcut-windows =
+    .keycode = VK_F9
+
+reader-mode-toggle-shortcut-other =
+    .key = R
+
+picture-in-picture-toggle-shortcut-mac =
+    .key = ]
+
+# Pick the key that is commonly present
+# in your locale keyboards above the
+# `picture-in-picture-toggle-shortcut-mac` key.
+picture-in-picture-toggle-shortcut-mac-alt =
+    .key = { "}" }
+
+picture-in-picture-toggle-shortcut =
+    .key = ]
+
+# Pick the key that is commonly present
+# in your locale keyboards above the
+# `picture-in-picture-toggle-shortcut` key.
+picture-in-picture-toggle-shortcut-alt =
+    .key = { "}" }
+
+bookmark-this-page-shortcut =
+    .key = d
+
+# Verify what shortcut for that operation
+# are recommended by the Human Interface Guidelines
+# of each platform for your locale.
+bookmark-show-library-shortcut =
+    .key = O
+
+# Verify what shortcut for that operation
+# are recommended by the Human Interface Guidelines
+# of each platform for your locale.
+bookmark-show-sidebar-shortcut =
+    .key = b
+
+# Verify what shortcut for that operation
+# are recommended by the Human Interface Guidelines
+# of each platform for your locale.
+bookmark-show-toolbar-shortcut =
+    .key = B
+
+## All `-alt*` messages are alternative acceleration keys for zoom.
+## If shift key is needed with your locale popular keyboard for them,
+## you can use these alternative items. Otherwise, their values should be empty.
+
+full-zoom-reduce-shortcut =
+    .key = -
+
+full-zoom-reduce-shortcut-alt-a =
+    .key = _
+
+full-zoom-reduce-shortcut-alt-b =
+    .key = { "" }
+
+full-zoom-enlarge-shortcut =
+    .key = +
+
+full-zoom-enlarge-shortcut-alt =
+    .key = =
+
+full-zoom-enlarge-shortcut-alt2 =
+    .key = { "" }
+
+full-zoom-reset-shortcut =
+    .key = 0
+
+full-zoom-reset-shortcut-alt =
+    .key = { "" }
+
+##
+
+bidi-switch-direction-shortcut =
+    .key = X
+
+private-browsing-shortcut =
+    .key = P
+
+## The shortcuts below are for Mac specific
+## global menu.
+
+quit-app-shortcut =
+    .key = Q
+
+help-shortcut =
+    .key = ?
+
+preferences-shortcut =
+    .key = ,
+
+hide-app-shortcut =
+    .key = H
+
+hide-other-apps-shortcut =
+    .key = H
diff --git a/l10n-en-GB/browser/browser/colorways.ftl b/l10n-en-GB/browser/browser/colorways.ftl
new file mode 100644
index 0000000000..bbbb2f8d6a
--- /dev/null
+++ b/l10n-en-GB/browser/browser/colorways.ftl
@@ -0,0 +1,26 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+## Colorway collections
+
+## Colorway names and descriptions
+
+playmaker-colorway-name = Playmaker
+playmaker-colorway-description = You create opportunities to win and help everyone around you elevate their game.
+
+expressionist-colorway-name = Expressionist
+expressionist-colorway-description = You see the world differently and your creations stir the emotions of others.
+
+visionary-colorway-name = Visionary
+visionary-colorway-description = You question the status quo and move others to imagine a better future.
+
+activist-colorway-name = Activist
+activist-colorway-description = You leave the world a better place than you found it and lead others to believe.
+
+dreamer-colorway-name = Dreamer
+dreamer-colorway-description = You believe that fortune favours the bold and inspire others to be brave.
+
+innovator-colorway-name = Innovator
+innovator-colorway-description = You see opportunities everywhere and make an impact on the lives of everyone around you.
diff --git a/l10n-en-GB/browser/browser/components/mozSupportLink.ftl b/l10n-en-GB/browser/browser/components/mozSupportLink.ftl
new file mode 100644
index 0000000000..0cfaf42816
--- /dev/null
+++ b/l10n-en-GB/browser/browser/components/mozSupportLink.ftl
@@ -0,0 +1,5 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+moz-support-link-text = Learn more
diff --git a/l10n-en-GB/browser/browser/confirmationHints.ftl b/l10n-en-GB/browser/browser/confirmationHints.ftl
new file mode 100644
index 0000000000..e08f5a2e70
--- /dev/null
+++ b/l10n-en-GB/browser/browser/confirmationHints.ftl
@@ -0,0 +1,24 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+## Confirmation hints
+
+confirmation-hint-breakage-report-sent = Report sent. Thank you!
+confirmation-hint-login-removed = Login removed!
+confirmation-hint-password-removed = Password removed!
+confirmation-hint-page-bookmarked = Saved to bookmarks
+confirmation-hint-password-saved = Password saved!
+confirmation-hint-password-created = Password saved
+confirmation-hint-password-updated = Password updated
+confirmation-hint-address-created = Address saved
+confirmation-hint-address-updated = Address updated
+confirmation-hint-credit-card-created = Card saved
+confirmation-hint-credit-card-updated = Card updated
+confirmation-hint-pin-tab = Pinned!
+confirmation-hint-pin-tab-description = Right-click the tab to unpin it.
+confirmation-hint-send-to-device = Sent!
+confirmation-hint-firefox-relay-mask-created = New mask created!
+confirmation-hint-firefox-relay-mask-reused = Existing mask reused!
+confirmation-hint-screenshot-copied = Screenshot copied!
diff --git a/l10n-en-GB/browser/browser/contentCrash.ftl b/l10n-en-GB/browser/browser/contentCrash.ftl
new file mode 100644
index 0000000000..d52c7b6733
--- /dev/null
+++ b/l10n-en-GB/browser/browser/contentCrash.ftl
@@ -0,0 +1,34 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+## Subframe crash notification
+
+crashed-subframe-message = <strong>Part of this page crashed.</strong> To let { -brand-product-name } know about this issue and get it fixed faster, please submit a report.
+
+# The string for crashed-subframe-title.title should match crashed-subframe-message,
+# but without any markup.
+crashed-subframe-title =
+    .title = Part of this page crashed. To let { -brand-product-name } know about this issue and get it fixed faster, please submit a report.
+crashed-subframe-learnmore-link =
+    .value = Learn more
+crashed-subframe-submit =
+    .label = Submit report
+    .accesskey = S
+
+## Pending crash reports
+
+# Variables:
+#   $reportCount (Number): the number of pending crash reports
+pending-crash-reports-message =
+    { $reportCount ->
+        [one] You have an unsent crash report
+       *[other] You have { $reportCount } unsent crash reports
+    }
+pending-crash-reports-view-all =
+    .label = View
+pending-crash-reports-send =
+    .label = Send
+pending-crash-reports-always-send =
+    .label = Always send
diff --git a/l10n-en-GB/browser/browser/customizeMode.ftl b/l10n-en-GB/browser/browser/customizeMode.ftl
new file mode 100644
index 0000000000..5cf4cba7f1
--- /dev/null
+++ b/l10n-en-GB/browser/browser/customizeMode.ftl
@@ -0,0 +1,38 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+customize-mode-restore-defaults =
+    .label = Restore Defaults
+customize-mode-menu-and-toolbars-header = Drag your favourite items into the toolbar or overflow menu.
+customize-mode-overflow-list-title = Overflow Menu
+customize-mode-uidensity =
+    .label = Density
+customize-mode-done =
+    .label = Done
+customize-mode-toolbars =
+    .label = Toolbars
+customize-mode-titlebar =
+    .label = Title Bar
+customize-mode-uidensity-menu-touch =
+    .label = Touch
+    .accesskey = T
+    .tooltiptext = Touch
+customize-mode-uidensity-auto-touch-mode-checkbox =
+    .label = Use Touch for Tablet Mode
+customize-mode-overflow-list-description = Drag and drop items here to keep them within reach but out of your toolbar…
+customize-mode-uidensity-menu-normal =
+    .label = Normal
+    .accesskey = N
+    .tooltiptext = Normal
+customize-mode-uidensity-menu-compact-unsupported =
+    .label = Compact (not supported)
+    .accesskey = C
+    .tooltiptext = Compact (not supported)
+customize-mode-undo-cmd =
+    .label = Undo
+customize-mode-lwthemes-link = Manage Themes
+customize-mode-touchbar-cmd =
+    .label = Customise Touch Bar…
+customize-mode-downloads-button-autohide =
+    .label = Hide button when empty
diff --git a/l10n-en-GB/browser/browser/defaultBrowserNotification.ftl b/l10n-en-GB/browser/browser/defaultBrowserNotification.ftl
new file mode 100644
index 0000000000..117c59c475
--- /dev/null
+++ b/l10n-en-GB/browser/browser/defaultBrowserNotification.ftl
@@ -0,0 +1,23 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# The question portion of the following message should have the <strong> and </strong> tags surrounding it.
+default-browser-notification-message = <strong>Set { -brand-short-name } as your default browser?</strong> Get fast, safe and private browsing whenever you use the web.
+default-browser-notification-button =
+    .label = Set as default
+    .accesskey = S
+
+## These strings are used for the default browser prompt. There are 2 variations
+## depending on the operating system (Windows vs other). The checkbox label and
+## secondary button are shared between the variants.
+
+default-browser-prompt-title-pin = Make { -brand-short-name } your primary browser?
+default-browser-prompt-message-pin = Keep { -brand-short-name } at your fingertips — make it your default browser and pin it to your taskbar.
+default-browser-prompt-message-pin-mac = Keep { -brand-short-name } at your fingertips — make it your default browser and keep it in your Dock.
+default-browser-prompt-button-primary-pin = Make primary browser
+default-browser-prompt-title-alt = Make { -brand-short-name } your default browser?
+default-browser-prompt-message-alt = Get speed, safety and privacy every time you browse.
+default-browser-prompt-button-primary-alt = Set as default browser
+default-browser-prompt-checkbox-not-again-label = Don’t show this message again
+default-browser-prompt-button-secondary = Not now
diff --git a/l10n-en-GB/browser/browser/downloads.ftl b/l10n-en-GB/browser/browser/downloads.ftl
new file mode 100644
index 0000000000..da0f0295f5
--- /dev/null
+++ b/l10n-en-GB/browser/browser/downloads.ftl
@@ -0,0 +1,254 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+## The title and aria-label attributes are used by screen readers to describe
+## the Downloads Panel.
+
+downloads-window =
+    .title = Downloads
+downloads-panel =
+    .aria-label = Downloads
+
+##
+
+# The style attribute has the width of the Downloads Panel expressed using
+# a CSS unit. The longest labels that should fit are usually those of
+# in-progress and blocked downloads.
+downloads-panel-items =
+    .style = width: 35em
+
+downloads-cmd-pause =
+    .label = Pause
+    .accesskey = P
+downloads-cmd-resume =
+    .label = Resume
+    .accesskey = R
+downloads-cmd-cancel =
+    .tooltiptext = Cancel
+downloads-cmd-cancel-panel =
+    .aria-label = Cancel
+
+downloads-cmd-show-menuitem-2 =
+    .label =
+        { PLATFORM() ->
+            [macos] Show in Finder
+           *[other] Show in Folder
+        }
+    .accesskey = F
+
+## Displayed in the downloads context menu for files that can be opened.
+## Variables:
+##   $handler (String) - The name of the mime type's default file handler.
+##   Example: "Notepad", "Acrobat Reader DC", "7-Zip File Manager"
+
+downloads-cmd-use-system-default =
+    .label = Open In System Viewer
+    .accesskey = I
+# This version is shown when the download's mime type has a valid file handler.
+downloads-cmd-use-system-default-named =
+    .label = Open In { $handler }
+    .accesskey = I
+
+# We can use the same accesskey as downloads-cmd-always-open-similar-files.
+# Both should not be visible in the downloads context menu at the same time.
+downloads-cmd-always-use-system-default =
+    .label = Always Open In System Viewer
+    .accesskey = w
+# We can use the same accesskey as downloads-cmd-always-open-similar-files.
+# Both should not be visible in the downloads context menu at the same time.
+# This version is shown when the download's mime type has a valid file handler.
+downloads-cmd-always-use-system-default-named =
+    .label = Always Open In { $handler }
+    .accesskey = w
+
+##
+
+# We can use the same accesskey as downloads-cmd-always-use-system-default.
+# Both should not be visible in the downloads context menu at the same time.
+downloads-cmd-always-open-similar-files =
+    .label = Always Open Similar Files
+    .accesskey = w
+
+downloads-cmd-show-button-2 =
+    .tooltiptext =
+        { PLATFORM() ->
+            [macos] Show in Finder
+           *[other] Show in Folder
+        }
+
+downloads-cmd-show-panel-2 =
+    .aria-label =
+        { PLATFORM() ->
+            [macos] Show in Finder
+           *[other] Show in Folder
+        }
+downloads-cmd-show-description-2 =
+    .value =
+        { PLATFORM() ->
+            [macos] Show in Finder
+           *[other] Show in Folder
+        }
+
+downloads-cmd-show-downloads =
+    .label = Show downloads folder
+downloads-cmd-retry =
+    .tooltiptext = Retry
+downloads-cmd-retry-panel =
+    .aria-label = Retry
+downloads-cmd-go-to-download-page =
+    .label = Go To Download Page
+    .accesskey = G
+downloads-cmd-copy-download-link =
+    .label = Copy Download Link
+    .accesskey = L
+downloads-cmd-remove-from-history =
+    .label = Remove From History
+    .accesskey = e
+downloads-cmd-clear-list =
+    .label = Clear Preview Panel
+    .accesskey = a
+downloads-cmd-clear-downloads =
+    .label = Clear Downloads
+    .accesskey = C
+downloads-cmd-delete-file =
+    .label = Delete
+    .accesskey = D
+
+# This command is shown in the context menu when downloads are blocked.
+downloads-cmd-unblock =
+    .label = Allow Download
+    .accesskey = o
+
+# This is the tooltip of the action button shown when malware is blocked.
+downloads-cmd-remove-file =
+    .tooltiptext = Remove File
+
+downloads-cmd-remove-file-panel =
+    .aria-label = Remove File
+
+# This is the tooltip of the action button shown when potentially unwanted
+# downloads are blocked. This opens a dialog where the user can choose
+# whether to unblock or remove the download. Removing is the default option.
+downloads-cmd-choose-unblock =
+    .tooltiptext = Remove File or Allow Download
+
+downloads-cmd-choose-unblock-panel =
+    .aria-label = Remove File or Allow Download
+
+# This is the tooltip of the action button shown when uncommon downloads are
+# blocked.This opens a dialog where the user can choose whether to open the
+# file or remove the download. Opening is the default option.
+downloads-cmd-choose-open =
+    .tooltiptext = Open or Remove File
+
+downloads-cmd-choose-open-panel =
+    .aria-label = Open or Remove File
+
+# Displayed when hovering a blocked download, indicates that it's possible to
+# show more information for user to take the next action.
+downloads-show-more-information =
+    .value = Show more information
+
+# Displayed when hovering a complete download, indicates that it's possible to
+# open the file using an app available in the system.
+downloads-open-file =
+    .value = Open File
+
+## Displayed when the user clicked on a download in process. Indicates that the
+## downloading file will be opened after certain amount of time using an app
+## available in the system.
+## Variables:
+##   $hours (number) - Amount of hours left till the file opens.
+##   $seconds (number) - Amount of seconds left till the file opens.
+##   $minutes (number) - Amount of minutes till the file opens.
+
+downloading-file-opens-in-hours-and-minutes-2 =
+    .value = Opening in { $hours }h { $minutes }m…
+downloading-file-opens-in-minutes-2 =
+    .value = Opening in { $minutes }m…
+downloading-file-opens-in-minutes-and-seconds-2 =
+    .value = Opening in { $minutes }m { $seconds }s…
+downloading-file-opens-in-seconds-2 =
+    .value = Opening in { $seconds }s…
+downloading-file-opens-in-some-time-2 =
+    .value = Opening when completed…
+downloading-file-click-to-open =
+    .value = Open when completed
+
+##
+
+# Displayed when hovering a download which is able to be retried by users,
+# indicates that it's possible to download this file again.
+downloads-retry-download =
+    .value = Retry Download
+
+# Displayed when hovering a download which is able to be cancelled by users,
+# indicates that it's possible to cancel and stop the download.
+downloads-cancel-download =
+    .value = Cancel Download
+
+# This string is shown at the bottom of the Downloads Panel when all the
+# downloads fit in the available space, or when there are no downloads in
+# the panel at all.
+downloads-history =
+    .label = Show all downloads
+    .accesskey = S
+
+# This string is shown at the top of the Download Details Panel, to indicate
+# that we are showing the details of a single download.
+downloads-details =
+    .title = Download details
+
+## Displayed when a site attempts to automatically download many files.
+## Variables:
+##   $num (number) - Number of blocked downloads.
+##   $url (string) - The url of the suspicious site, stripped of http, https and www prefix.
+
+downloads-files-not-downloaded =
+    { $num ->
+        [one] File not downloaded.
+       *[other] { $num } files not downloaded.
+    }
+downloads-blocked-from-url = Downloads blocked from { $url }.
+downloads-blocked-download-detailed-info = { $url } attempted to automatically download multiple files. The site could be broken or trying to store spam files on your device.
+
+##
+
+downloads-clear-downloads-button =
+    .label = Clear Downloads
+    .tooltiptext = Clears completed, cancelled and failed downloads
+
+# This string is shown when there are no items in the Downloads view, when it
+# is displayed inside a browser tab.
+downloads-list-empty =
+    .value = There are no downloads.
+
+# This string is shown when there are no items in the Downloads Panel.
+downloads-panel-empty =
+    .value = No downloads for this session.
+
+# This is displayed in an item at the bottom of the Downloads Panel when there
+# are more downloads than can fit in the list in the panel.
+#   $count (number) - number of files being downloaded that are not shown in the
+#                     panel list.
+downloads-more-downloading =
+    { $count ->
+        [one] { $count } more file downloading
+       *[other] { $count } more files downloading
+    }
+
+## Download errors
+
+downloads-error-alert-title = Download Error
+# Variables:
+#   $extension (String): the name of the blocking extension.
+downloads-error-blocked-by = The download cannot be saved because it is blocked by { $extension }.
+# Used when the name of the blocking extension is unavailable.
+downloads-error-extension = The download cannot be saved because it is blocked by an extension.
+# Line breaks in this message are meaningful, and should be maintained.
+downloads-error-generic =
+    The download cannot be saved because an unknown error occurred.
+    
+    Please try again.
diff --git a/l10n-en-GB/browser/browser/editBookmarkOverlay.ftl b/l10n-en-GB/browser/browser/editBookmarkOverlay.ftl
new file mode 100644
index 0000000000..8542e8c2b3
--- /dev/null
+++ b/l10n-en-GB/browser/browser/editBookmarkOverlay.ftl
@@ -0,0 +1,49 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+bookmark-overlay-name-2 =
+    .value = Name
+    .accesskey = N
+bookmark-overlay-url =
+    .value = URL
+    .accesskey = U
+# Location refers to the position of the bookmark within the browser's
+# bookmarks, not to its URL or address.
+bookmark-overlay-location-2 =
+    .value = Location
+    .accesskey = L
+bookmark-overlay-choose =
+    .label = Choose…
+bookmark-overlay-folders-expander =
+    .tooltiptext = Show all the bookmarks folders
+    .tooltiptextdown = { bookmark-overlay-folders-expander.tooltiptext }
+    .tooltiptextup = Hide
+bookmark-overlay-folders-expander2 =
+    .tooltiptext = Show all the bookmarks folders
+bookmark-overlay-folders-expander-hide =
+    .tooltiptext = Hide
+# bookmark-overlay-folders-tree is used to provide an accessible name to the tree view of the Bookmarks directory, when it is expanded
+bookmark-overlay-folders-tree =
+    .aria-label = Folders
+bookmark-overlay-new-folder-button =
+    .label = New Folder
+    .accesskey = o
+bookmark-overlay-tags-2 =
+    .value = Tags
+    .accesskey = T
+bookmark-overlay-tags-empty-description =
+    .placeholder = Separate tags with commas
+bookmark-overlay-tags-expander =
+    .tooltiptext = Show all tags
+    .tooltiptextdown = { bookmark-overlay-tags-expander.tooltiptext }
+    .tooltiptextup = Hide
+bookmark-overlay-tags-expander2 =
+    .tooltiptext = Show all tags
+bookmark-overlay-tags-expander-hide =
+    .tooltiptext = Hide
+bookmark-overlay-keyword-2 =
+    .value = Keyword
+    .accesskey = K
+bookmark-overlay-tags-caption-label = Use tags to organise and search for bookmarks from the address bar
+bookmark-overlay-keyword-caption-label-2 = Use a single keyword to open bookmarks directly from the address bar
diff --git a/l10n-en-GB/browser/browser/extensionsUI.ftl b/l10n-en-GB/browser/browser/extensionsUI.ftl
new file mode 100644
index 0000000000..522f534f55
--- /dev/null
+++ b/l10n-en-GB/browser/browser/extensionsUI.ftl
@@ -0,0 +1,33 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+webext-perms-learn-more = Learn more
+# Variables:
+#   $addonName (String): localized named of the extension that is asking to change the default search engine.
+#   $currentEngine (String): name of the current search engine.
+#   $newEngine (String): name of the new search engine.
+webext-default-search-description = { $addonName } would like to change your default search engine from { $currentEngine } to { $newEngine }. Is that OK?
+webext-default-search-yes =
+    .label = Yes
+    .accesskey = Y
+webext-default-search-no =
+    .label = No
+    .accesskey = N
+# Variables:
+#   $addonName (String): localized named of the extension that was just installed.
+addon-post-install-message = { $addonName } was added.
+
+## A modal confirmation dialog to allow an extension on quarantined domains.
+
+# Variables:
+#   $addonName (String): localized name of the extension.
+webext-quarantine-confirmation-title = Run { $addonName } on restricted sites?
+webext-quarantine-confirmation-line-1 = To protect your data, this extension is not allowed on this site.
+webext-quarantine-confirmation-line-2 = Allow this extension if you trust it to read and change your data on sites restricted by { -vendor-short-name }.
+webext-quarantine-confirmation-allow =
+    .label = Allow
+    .accesskey = A
+webext-quarantine-confirmation-deny =
+    .label = Don’t Allow
+    .accesskey = D
diff --git a/l10n-en-GB/browser/browser/featureCallout.ftl b/l10n-en-GB/browser/browser/featureCallout.ftl
new file mode 100644
index 0000000000..861e483ed3
--- /dev/null
+++ b/l10n-en-GB/browser/browser/featureCallout.ftl
@@ -0,0 +1,56 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# Callout dialog primary button to advance to next screen
+callout-primary-advance-button-label = Next
+
+# Callout dialog primary button to complete the feature tour
+callout-primary-complete-button-label = Got it!
+
+## Firefox View feature tour strings
+
+# "Tab pickup" refers to the section in Firefox View that displays open
+# tabs from other devices
+callout-firefox-view-tab-pickup-title = Hop between devices with tab pickup
+
+callout-firefox-view-tab-pickup-subtitle = Quickly grab open tabs from your phone and open them here for maximum flow.
+
+callout-firefox-view-recently-closed-title = Get back your closed tabs in a snap
+
+callout-firefox-view-recently-closed-subtitle = All your closed tabs will magically show up here. Never worry about accidentally closing a site again.
+
+callout-firefox-view-colorways-title = Add a splash of colour
+
+# "Shade" refer to different color options in each colorway.
+callout-firefox-view-colorways-subtitle = Choose the shade that speaks to you with colourways. Only in { -brand-product-name }.
+
+callout-firefox-view-colorways-reminder-title = Explore our latest colourways
+
+# “Shades” refers to the different color options in each colorways
+callout-firefox-view-colorways-reminder-subtitle = Colour your browser with these iconic shades, inspired by independent voices. Only in { -brand-product-name }.
+
+## Continuous Onboarding - Firefox View: Tab pick up
+
+# “Boost your browsing” refers to the added benefit the user receives from having
+# access to the same browsing experience when moving from one browser to another.
+# Alternative: ”Improve your browsing experience with tab pickup”
+continuous-onboarding-firefox-view-tab-pickup-title = Boost your browsing with tab pickup
+
+continuous-onboarding-firefox-view-tab-pickup-subtitle = Access your open tabs from any device. Plus synchronise your bookmarks, passwords and more.
+
+continuous-onboarding-firefox-view-tab-pickup-primary-button-label = Get started
+
+## PDF.js Feature Tour Strings
+
+callout-pdfjs-edit-title = Edit PDFs with our new text tool
+callout-pdfjs-edit-body-a = Fill out forms, add comments, or take notes directly in { -brand-short-name }.
+callout-pdfjs-edit-body-b = Skip the search for free online editors. Fill out forms, add comments, or take notes directly in { -brand-short-name }.
+callout-pdfjs-edit-button = Next
+
+callout-pdfjs-draw-title = Sign documents with our new draw tool
+# “Mark up” refers to the process of “annotating” or adding free hand text or diagramming to the document.
+callout-pdfjs-draw-body-a = Mark up PDFs, then save your changes.
+# “Mark up” refers to the process of “annotating” or adding free hand text or diagramming to the document.
+callout-pdfjs-draw-body-b = No more printing and scanning. Mark up PDFs, then save your changes.
+callout-pdfjs-draw-button = Got it!
diff --git a/l10n-en-GB/browser/browser/firefoxRelay.ftl b/l10n-en-GB/browser/browser/firefoxRelay.ftl
new file mode 100644
index 0000000000..83ee9bfbc8
--- /dev/null
+++ b/l10n-en-GB/browser/browser/firefoxRelay.ftl
@@ -0,0 +1,35 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+## Error messages for failed HTTP web requests.
+## https://developer.mozilla.org/en-US/docs/Web/HTTP/Status#client_error_responses
+## Variables:
+##   $status (Number) - HTTP status code, for example 403
+
+firefox-relay-mask-generation-failed = { -relay-brand-name } could not generate a new mask. HTTP error code: { $status }.
+firefox-relay-get-reusable-masks-failed = { -relay-brand-name } could not find reusable masks. HTTP error code: { $status }.
+
+##
+
+firefox-relay-must-login-to-fxa = You must log in to { -fxaccount-brand-name } in order to use { -relay-brand-name }.
+firefox-relay-must-login-to-account = Sign in to your account to use your { -relay-brand-name } email masks.
+firefox-relay-get-unlimited-masks =
+    .label = Manage masks
+    .accesskey = M
+# This is followed, on a new line, by firefox-relay-opt-in-subtitle-1
+firefox-relay-opt-in-title-1 = Protect your email address:
+# This is preceded by firefox-relay-opt-in-title-1 (on a different line), which
+# ends with a colon. You might need to adapt the capitalization of this string.
+firefox-relay-opt-in-subtitle-1 = Use { -relay-brand-name } email mask
+firefox-relay-use-mask-title = Use { -relay-brand-name } email mask
+firefox-relay-opt-in-confirmation-enable-button =
+    .label = Use email mask
+    .accesskey = U
+firefox-relay-opt-in-confirmation-disable =
+    .label = Don’t show me this again
+    .accesskey = D
+firefox-relay-opt-in-confirmation-postpone =
+    .label = Not now
+    .accesskey = N
diff --git a/l10n-en-GB/browser/browser/firefoxView.ftl b/l10n-en-GB/browser/browser/firefoxView.ftl
new file mode 100644
index 0000000000..79c2b600eb
--- /dev/null
+++ b/l10n-en-GB/browser/browser/firefoxView.ftl
@@ -0,0 +1,248 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+toolbar-button-firefox-view =
+    .label = { -firefoxview-brand-name }
+    .tooltiptext = { -firefoxview-brand-name }
+toolbar-button-firefox-view-2 =
+    .label = { -firefoxview-brand-name }
+    .tooltiptext = View recent browsing across windows and devices
+menu-tools-firefox-view =
+    .label = { -firefoxview-brand-name }
+    .accesskey = F
+firefoxview-page-title = { -firefoxview-brand-name }
+firefoxview-page-label =
+    .label = { -firefoxview-brand-name }
+firefoxview-close-button =
+    .title = Close
+    .aria-label = Close
+firefoxview-empty-state-icon =
+    .alt = Attention:
+# Used instead of the localized relative time when a timestamp is within a minute or so of now
+firefoxview-just-now-timestamp = Just now
+# This is a headline for an area in the product where users can resume and re-open tabs they have previously viewed on other devices.
+firefoxview-tabpickup-header = Tab pickup
+firefoxview-tabpickup-description = Open pages from other devices.
+# Variables:
+#  $percentValue (Number): the percentage value for setup completion
+firefoxview-tabpickup-progress-label = { $percentValue }% complete
+firefoxview-tabpickup-step-signin-header = Switch seamlessly between devices
+firefoxview-tabpickup-step-signin-description = To grab your phone tabs here, first sign in or create an account.
+firefoxview-tabpickup-step-signin-primarybutton = Continue
+firefoxview-syncedtabs-signin-header = Grab tabs from anywhere
+firefoxview-syncedtabs-signin-description = To see your tabs from wherever you use { -brand-product-name }, sign in to your account. If you don’t have an account, we’ll take you through the steps to sign up.
+firefoxview-syncedtabs-signin-primarybutton = Sign in or sign up
+firefoxview-tabpickup-adddevice-header = Synchronise { -brand-product-name } on your phone or tablet
+firefoxview-tabpickup-adddevice-description = Download { -brand-product-name } for mobile and sign in there.
+firefoxview-tabpickup-adddevice-learn-how = Learn how
+firefoxview-tabpickup-adddevice-primarybutton = Get { -brand-product-name } for mobile
+firefoxview-syncedtabs-adddevice-header = Sign in to { -brand-product-name } on your other devices
+firefoxview-syncedtabs-adddevice-description = To see your tabs from wherever you use { -brand-product-name }, sign in on all your devices. Learn how to <a data-l10n-name="url">connect additional devices</a>.
+firefoxview-syncedtabs-adddevice-primarybutton = Try { -brand-product-name } for mobile
+firefoxview-tabpickup-synctabs-header = Turn on tab synchronisation
+firefoxview-tabpickup-synctabs-description = Allow { -brand-short-name } to share tabs between devices.
+firefoxview-tabpickup-synctabs-learn-how = Learn how
+firefoxview-tabpickup-synctabs-primarybutton = Synchronise open tabs
+firefoxview-syncedtabs-synctabs-header = Update your synchronisation settings
+firefoxview-syncedtabs-synctabs-description = To see tabs from other devices, you need to synchronise your open tabs.
+firefoxview-syncedtabs-synctabs-checkbox = Allow open tabs to synchronise
+firefoxview-syncedtabs-loading-header = Synchronisation in progress...
+firefoxview-syncedtabs-loading-description = When it’s done, you’ll see any tabs you have open on other devices. Check back soon.
+firefoxview-tabpickup-fxa-admin-disabled-header = Your organisation has disabled synchronisation
+firefoxview-tabpickup-fxa-admin-disabled-description = { -brand-short-name } is not able to synchronise tabs between devices because your administrator has disabled synchronisation.
+firefoxview-tabpickup-network-offline-header = Check your internet connection
+firefoxview-tabpickup-network-offline-description = If you’re using a firewall or proxy, check that { -brand-short-name } has permission to access the web.
+firefoxview-tabpickup-network-offline-primarybutton = Try again
+firefoxview-tabpickup-sync-error-header = We’re having trouble synchronising
+firefoxview-tabpickup-generic-sync-error-description = { -brand-short-name } can’t reach the synchronisation service right now. Try again in a few moments.
+firefoxview-tabpickup-sync-error-primarybutton = Try again
+firefoxview-tabpickup-sync-disconnected-header = Turn on synchronisation to continue
+firefoxview-tabpickup-sync-disconnected-description = To grab your tabs, you’ll need to allow synchronisation in { -brand-short-name }.
+firefoxview-tabpickup-sync-disconnected-primarybutton = Turn on synchronisation in settings
+firefoxview-tabpickup-password-locked-header = Enter your Primary Password to view tabs
+firefoxview-tabpickup-password-locked-description = To grab your tabs, you’ll need to enter the Primary Password for { -brand-short-name }.
+firefoxview-tabpickup-password-locked-link = Learn more
+firefoxview-tabpickup-password-locked-primarybutton = Enter Primary Password
+firefoxview-syncedtab-password-locked-link = <a data-l10n-name="syncedtab-password-locked-link">Learn more</a>
+firefoxview-tabpickup-signed-out-header = Sign in to reconnect
+firefoxview-tabpickup-signed-out-description = To reconnect and grab your tabs, sign in to your { -fxaccount-brand-name }.
+firefoxview-tabpickup-signed-out-description2 = To reconnect and grab your tabs, sign in to your account.
+firefoxview-tabpickup-signed-out-primarybutton = Sign in
+firefoxview-tabpickup-syncing = Sit tight while your tabs synchronise. It’ll be just a moment.
+firefoxview-mobile-promo-header = Grab tabs from your phone or tablet
+firefoxview-mobile-promo-description = To view your latest mobile tabs, sign in to { -brand-product-name } on iOS or Android.
+firefoxview-mobile-promo-primarybutton = Get { -brand-product-name } for mobile
+firefoxview-mobile-confirmation-header = 🎉 Good to go!
+firefoxview-mobile-confirmation-description = Now you can grab your { -brand-product-name } tabs from your tablet or phone.
+firefoxview-closed-tabs-title = Recently closed
+firefoxview-closed-tabs-description2 = Reopen pages you’ve closed in this window.
+firefoxview-closed-tabs-placeholder-header = No recently closed tabs
+firefoxview-closed-tabs-placeholder-body = When you close a tab in this window, you can fetch it from here.
+firefoxview-closed-tabs-placeholder-body2 = When you close a tab, you can fetch it from here.
+# Variables:
+#   $tabTitle (string) - Title of tab being dismissed
+firefoxview-closed-tabs-dismiss-tab =
+    .title = Dismiss { $tabTitle }
+# refers to the last tab that was used
+firefoxview-pickup-tabs-badge = Last active
+# Variables:
+#   $targetURI (string) - URL that will be opened in the new tab
+firefoxview-tabs-list-tab-button =
+    .title = Open { $targetURI } in a new tab
+firefoxview-try-colorways-button = Try colourways
+firefoxview-change-colorway-button = Change colourway
+# Variables:
+#  $intensity (String): Colorway intensity
+#  $collection (String): Colorway Collection name
+firefoxview-colorway-description = { $intensity } · { $collection }
+firefoxview-synced-tabs-placeholder-header = Nothing to see yet
+firefoxview-synced-tabs-placeholder-body = The next time you open a page in { -brand-product-name } on another device, grab it here like magic.
+firefoxview-collapse-button-show =
+    .title = Show list
+firefoxview-collapse-button-hide =
+    .title = Hide list
+firefoxview-overview-nav = Recent browsing
+    .title = Recent browsing
+firefoxview-overview-header = Recent browsing
+    .title = Recent browsing
+
+## History in this context refers to browser history
+
+firefoxview-history-nav = History
+    .title = History
+firefoxview-history-header = History
+firefoxview-history-context-delete = Delete from History
+    .accesskey = D
+
+## Open Tabs in this context refers to all open tabs in the browser
+
+firefoxview-opentabs-nav = Open tabs
+    .title = Open tabs
+firefoxview-opentabs-header = Open tabs
+
+## Recently closed tabs in this context refers to recently closed tabs from all windows
+
+firefoxview-recently-closed-nav = Recently closed tabs
+    .title = Recently closed tabs
+firefoxview-recently-closed-header = Recently closed tabs
+
+## Tabs from other devices refers in this context refers to synced tabs from other devices
+
+firefoxview-synced-tabs-nav = Tabs from other devices
+    .title = Tabs from other devices
+firefoxview-synced-tabs-header = Tabs from other devices
+
+##
+
+# Used for a link in collapsible cards, in the ’Recent browsing’ page of Firefox View
+firefoxview-view-all-link = View all
+# Variables:
+#   $winID (Number) - The index of the owner window for this set of tabs
+firefoxview-opentabs-window-header =
+    .title = Window { $winID }
+# Variables:
+#   $winID (Number) - The index of the owner window (which is currently focused) for this set of tabs
+firefoxview-opentabs-current-window-header =
+    .title = Window { $winID } (Current)
+firefoxview-opentabs-focus-tab =
+    .title = Switch to this tab
+firefoxview-show-more = Show more
+firefoxview-show-less = Show less
+firefoxview-show-all = Show all
+firefoxview-search-text-box-clear-button =
+    .title = Clear
+# Placeholder for the input field to search in recent browsing ("search" is a verb).
+firefoxview-search-text-box-recentbrowsing =
+    .placeholder = Search
+# Placeholder for the input field to search in history ("search" is a verb).
+firefoxview-search-text-box-history =
+    .placeholder = Search history
+# Placeholder for the input field to search in recently closed tabs ("search" is a verb).
+firefoxview-search-text-box-recentlyclosed =
+    .placeholder = Search recently closed tabs
+# Placeholder for the input field to search in tabs from other devices ("search" is a verb).
+firefoxview-search-text-box-syncedtabs =
+    .placeholder = Search synchronised tabs
+# Placeholder for the input field to search in open tabs ("search" is a verb).
+firefoxview-search-text-box-opentabs =
+    .placeholder = Search open tabs
+# "Search" is a noun (as in "Results of the search for")
+# Variables:
+#   $query (String) - The search query used for searching through browser history.
+firefoxview-search-results-header = Search results for “{ $query }”
+# Variables:
+#   $count (Number) - The number of visits matching the search query.
+firefoxview-search-results-count =
+    { $count ->
+        [one] { $count } site
+       *[other] { $count } sites
+    }
+# Message displayed when a search is performed and no matching results were found.
+# Variables:
+#   $query (String) - The search query.
+firefoxview-search-results-empty = No results for “{ $query }”
+firefoxview-sort-history-by-date-label = Sort by date
+firefoxview-sort-history-by-site-label = Sort by site
+# Variables:
+#   $url (string) - URL that will be opened in the new tab
+firefoxview-opentabs-tab-row =
+    .title = Switch to { $url }
+
+## Variables:
+##   $date (string) - Date to be formatted based on locale
+
+firefoxview-history-date-today = Today - { DATETIME($date, dateStyle: "full") }
+firefoxview-history-date-yesterday = Yesterday - { DATETIME($date, dateStyle: "full") }
+firefoxview-history-date-this-month = { DATETIME($date, dateStyle: "full") }
+firefoxview-history-date-prev-month = { DATETIME($date, month: "long", year: "numeric") }
+# When history is sorted by site, this heading is used in place of a domain, in
+# order to group sites that do not come from an outside host.
+# For example, this would be the heading for all file:/// URLs in history.
+firefoxview-history-site-localhost = (local files)
+
+##
+
+firefoxview-show-all-history = Show all history
+firefoxview-view-more-browsing-history = View more browsing history
+
+## Message displayed in Firefox View when the user has no history data
+
+firefoxview-history-empty-header = Get back to where you’ve been
+firefoxview-history-empty-description = As you browse, the pages you visit will be listed here.
+firefoxview-history-empty-description-two = Protecting your privacy is at the heart of what we do. It’s why you can control the activity { -brand-short-name } remembers, in your <a data-l10n-name="history-settings-url">history settings</a>.
+
+##
+
+# Button text for choosing a browser within the ’Import history from another browser’ banner
+firefoxview-choose-browser-button = Choose browser
+    .title = Choose browser
+
+## Message displayed in Firefox View when the user has chosen to never remember History
+
+firefoxview-dont-remember-history-empty-header = Nothing to show
+firefoxview-dont-remember-history-empty-description = Protecting your privacy is at the heart of what we do. It’s why you can control the activity { -brand-short-name } remembers.
+firefoxview-dont-remember-history-empty-description-two = Based on your current settings, { -brand-short-name } doesn’t remember your activity as you browse. To change that, <a data-l10n-name="history-settings-url-two">change your history settings to remember your history</a>.
+
+##
+
+# This label is read by screen readers when focusing the close button for the "Import history from another browser" banner in Firefox View
+firefoxview-import-history-close-button =
+    .aria-label = Close
+    .title = Close
+
+## Text displayed in a dismissable banner to import bookmarks/history from another browser
+
+firefoxview-import-history-header = Import history from another browser
+firefoxview-import-history-description = Make { -brand-short-name } your go-to browser. Import browsing history, bookmarks, and more.
+
+## Message displayed in Firefox View when the user has no recently closed tabs data
+
+firefoxview-recentlyclosed-empty-header = Closed a tab too soon?
+firefoxview-recentlyclosed-empty-description = Here you’ll find the tabs you recently closed, so you can reopen any of them quickly.
+firefoxview-recentlyclosed-empty-description-two = To find tabs from longer ago, view your <a data-l10n-name="history-url">browsing history</a>.
+
+## This message is displayed below the name of another connected device when it doesn't have any open tabs.
+
+firefoxview-syncedtabs-device-notabs = No tabs open on this device
+firefoxview-syncedtabs-connect-another-device = Connect another device
diff --git a/l10n-en-GB/browser/browser/firefoxWebAuthn.ftl b/l10n-en-GB/browser/browser/firefoxWebAuthn.ftl
new file mode 100644
index 0000000000..6fbe8159b2
--- /dev/null
+++ b/l10n-en-GB/browser/browser/firefoxWebAuthn.ftl
@@ -0,0 +1,3 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
diff --git a/l10n-en-GB/browser/browser/fxviewTabList.ftl b/l10n-en-GB/browser/browser/fxviewTabList.ftl
new file mode 100644
index 0000000000..7e98ffb809
--- /dev/null
+++ b/l10n-en-GB/browser/browser/fxviewTabList.ftl
@@ -0,0 +1,57 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+fxviewtabrow-open-menu-button =
+    .title = Open menu
+# Variables:
+#   $date (string) - Date to be formatted based on locale
+fxviewtabrow-date = { DATETIME($date, dateStyle: "short") }
+# Variables:
+#   $time (string) - Time to be formatted based on locale
+fxviewtabrow-time = { DATETIME($time, timeStyle: "short") }
+# Variables:
+#   $targetURI (string) - URL of tab that will be opened in the new tab
+fxviewtabrow-tabs-list-tab =
+    .title = Open { $targetURI } in a new tab
+# Variables:
+#   $tabTitle (string) - Title of tab being dismissed
+fxviewtabrow-dismiss-tab-button =
+    .title = Dismiss { $tabTitle }
+# Used instead of the localized relative time when a timestamp is within a minute or so of now
+fxviewtabrow-just-now-timestamp = Just now
+
+# Strings below are used for context menu options within panel-list.
+# For developers, this duplicates command because the label attribute is required.
+
+fxviewtabrow-delete = Delete
+    .accesskey = D
+fxviewtabrow-forget-about-this-site = Forget About This Site…
+    .accesskey = F
+fxviewtabrow-open-in-window = Open in New Window
+    .accesskey = N
+fxviewtabrow-open-in-private-window = Open in New Private Window
+    .accesskey = P
+# “Bookmark” is a verb, as in "Bookmark this page" (add to bookmarks).
+fxviewtabrow-add-bookmark = Bookmark…
+    .accesskey = B
+fxviewtabrow-save-to-pocket = Save to { -pocket-brand-name }
+    .accesskey = o
+fxviewtabrow-copy-link = Copy Link
+    .accesskey = L
+fxviewtabrow-close-tab = Close Tab
+    .accesskey = C
+fxviewtabrow-move-tab = Move Tab
+    .accesskey = v
+fxviewtabrow-move-tab-start = Move to Start
+    .accesskey = S
+fxviewtabrow-move-tab-end = Move to End
+    .accesskey = E
+fxviewtabrow-move-tab-window = Move to New Window
+    .accesskey = W
+fxviewtabrow-send-tab = Send Tab to Device
+    .accesskey = n
+# Variables:
+#   $tabTitle (string) - Title of the tab to which the context menu is associated
+fxviewtabrow-options-menu-button =
+    .title = Options for { $tabTitle }
diff --git a/l10n-en-GB/browser/browser/identityCredentialNotification.ftl b/l10n-en-GB/browser/browser/identityCredentialNotification.ftl
new file mode 100644
index 0000000000..633b2f0d9b
--- /dev/null
+++ b/l10n-en-GB/browser/browser/identityCredentialNotification.ftl
@@ -0,0 +1,29 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+## Credential panel
+##
+## Identity providers are websites you use to log in to another website, for
+## example: Google when you Log in with Google.
+##
+## Variables:
+##  $host (String): the hostname of the site that is being displayed.
+##  $provider (String): the hostname of another website you are using to log in to the site being displayed
+
+identity-credential-header-providers = Sign in with a login provider
+identity-credential-header-accounts = Sign in with { $provider }
+identity-credential-urlbar-anchor =
+    .tooltiptext = Open login panel
+identity-credential-cancel-button =
+    .label = Cancel
+    .accesskey = n
+identity-credential-accept-button =
+    .label = Continue
+    .accesskey = C
+identity-credential-sign-in-button =
+    .label = Sign In
+    .accesskey = S
+identity-credential-policy-title = Use { $provider } as a login provider
+identity-credential-policy-description = Logging in to { $host } with a { $provider } account is subject to their <label data-l10n-name="privacy-url">Privacy Policy</label> and <label data-l10n-name="tos-url">Terms of Service</label>.
diff --git a/l10n-en-GB/browser/browser/linuxDesktopEntry.ftl b/l10n-en-GB/browser/browser/linuxDesktopEntry.ftl
new file mode 100644
index 0000000000..410c714822
--- /dev/null
+++ b/l10n-en-GB/browser/browser/linuxDesktopEntry.ftl
@@ -0,0 +1,27 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+# These messages are used by the Firefox ".desktop" file on Linux.
+# https://specifications.freedesktop.org/desktop-entry-spec/desktop-entry-spec-latest.html
+
+# The entry name is the label on the desktop icon, among other things.
+desktop-entry-name = { -brand-shortcut-name }
+# The comment usually appears as a tooltip when hovering over application menu entry.
+desktop-entry-comment = Browse the World Wide Web
+desktop-entry-generic-name = Web Browser
+# Combine Name and GenericName. This string is specific to GNOME.
+desktop-entry-x-gnome-full-name = { -brand-shortcut-name } Web Browser
+# Keywords are search terms used to find this application.
+# The string is a list of keywords separated by semicolons:
+# - Do NOT replace semicolons with other punctuation signs.
+# - The list MUST end with a semicolon.
+desktop-entry-keywords = Internet;WWW;Browser;Web;Explorer;
+
+## Actions are visible in a context menu after right clicking the
+## taskbar icon, possibly other places depending on the environment.
+
+desktop-action-new-window-name = New Window
+desktop-action-new-private-window-name = New Private Window
+desktop-action-open-profile-manager = Open Profile Manager
diff --git a/l10n-en-GB/browser/browser/menubar.ftl b/l10n-en-GB/browser/browser/menubar.ftl
new file mode 100644
index 0000000000..2225f6d092
--- /dev/null
+++ b/l10n-en-GB/browser/browser/menubar.ftl
@@ -0,0 +1,351 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+# NOTE: For English locales, strings in this file should be in APA-style Title Case.
+# See https://apastyle.apa.org/style-grammar-guidelines/capitalization/title-case
+#
+# NOTE: For Engineers, please don't re-use these strings outside of the menubar.
+
+
+# NOTE: For English locales, strings in this file should be in APA-style Title Case.
+# See https://apastyle.apa.org/style-grammar-guidelines/capitalization/title-case
+#
+# NOTE: For Engineers, please don't reuse these strings outside of the menubar.
+
+
+## Application Menu (macOS only)
+
+menu-application-preferences =
+    .label = Preferences
+menu-application-services =
+    .label = Services
+menu-application-hide-this =
+    .label = Hide { -brand-shorter-name }
+menu-application-hide-other =
+    .label = Hide Others
+menu-application-show-all =
+    .label = Show All
+menu-application-touch-bar =
+    .label = Customise Touch Bar…
+
+##
+
+# These menu-quit strings are only used on Windows and Linux.
+menu-quit =
+    .label =
+        { PLATFORM() ->
+            [windows] Exit
+           *[other] Quit
+        }
+    .accesskey =
+        { PLATFORM() ->
+            [windows] x
+           *[other] Q
+        }
+# This menu-quit-mac string is only used on macOS.
+menu-quit-mac =
+    .label = Quit { -brand-shorter-name }
+menu-about =
+    .label = About { -brand-shorter-name }
+    .accesskey = A
+
+## File Menu
+
+menu-file =
+    .label = File
+    .accesskey = F
+menu-file-new-tab =
+    .label = New Tab
+    .accesskey = T
+menu-file-new-container-tab =
+    .label = New Container Tab
+    .accesskey = b
+menu-file-new-window =
+    .label = New Window
+    .accesskey = N
+menu-file-new-private-window =
+    .label = New Private Window
+    .accesskey = W
+# "Open Location" is only displayed on macOS, and only on windows
+# that aren't main browser windows, or when there are no windows
+# but Firefox is still running.
+menu-file-open-location =
+    .label = Open Location…
+menu-file-open-file =
+    .label = Open File…
+    .accesskey = O
+# Variables:
+#  $tabCount (Number): the number of tabs that are affected by the action.
+menu-file-close-tab =
+    .label =
+        { $tabCount ->
+            [1] Close Tab
+           *[other] Close { $tabCount } Tabs
+        }
+    .accesskey = C
+menu-file-close-window =
+    .label = Close Window
+    .accesskey = d
+menu-file-save-page =
+    .label = Save Page As…
+    .accesskey = A
+menu-file-email-link =
+    .label = Email Link…
+    .accesskey = E
+menu-file-share-url =
+    .label = Share
+    .accesskey = h
+menu-file-print-setup =
+    .label = Page Setup…
+    .accesskey = u
+menu-file-print =
+    .label = Print…
+    .accesskey = P
+menu-file-import-from-another-browser =
+    .label = Import From Another Browser…
+    .accesskey = I
+menu-file-go-offline =
+    .label = Work Offline
+    .accesskey = k
+
+## Edit Menu
+
+menu-edit =
+    .label = Edit
+    .accesskey = E
+menu-edit-find-in-page =
+    .label = Find in Page…
+    .accesskey = F
+menu-edit-find-again =
+    .label = Find Again
+    .accesskey = g
+menu-edit-bidi-switch-text-direction =
+    .label = Switch Text Direction
+    .accesskey = w
+
+## View Menu
+
+menu-view =
+    .label = View
+    .accesskey = V
+menu-view-toolbars-menu =
+    .label = Toolbars
+    .accesskey = T
+menu-view-customize-toolbar2 =
+    .label = Customise Toolbar…
+    .accesskey = C
+menu-view-sidebar =
+    .label = Sidebar
+    .accesskey = e
+menu-view-bookmarks =
+    .label = Bookmarks
+menu-view-history-button =
+    .label = History
+menu-view-synced-tabs-sidebar =
+    .label = Synced Tabs
+menu-view-full-zoom =
+    .label = Zoom
+    .accesskey = Z
+menu-view-full-zoom-enlarge =
+    .label = Zoom In
+    .accesskey = I
+menu-view-full-zoom-reduce =
+    .label = Zoom Out
+    .accesskey = O
+menu-view-full-zoom-actual-size =
+    .label = Actual Size
+    .accesskey = A
+menu-view-full-zoom-toggle =
+    .label = Zoom Text Only
+    .accesskey = T
+menu-view-page-style-menu =
+    .label = Page Style
+    .accesskey = y
+menu-view-page-style-no-style =
+    .label = No Style
+    .accesskey = N
+menu-view-page-basic-style =
+    .label = Basic Page Style
+    .accesskey = B
+menu-view-repair-text-encoding =
+    .label = Repair Text Encoding
+    .accesskey = c
+
+## These should match what Safari and other Apple applications
+## use on macOS.
+
+menu-view-enter-full-screen =
+    .label = Enter Full Screen
+    .accesskey = F
+menu-view-exit-full-screen =
+    .label = Exit Full Screen
+    .accesskey = F
+menu-view-full-screen =
+    .label = Full Screen
+    .accesskey = F
+
+## These menu items may use the same accesskey.
+
+# This should match reader-view-enter-button in browser.ftl
+menu-view-enter-readerview =
+    .label = Enter Reader View
+    .accesskey = R
+# This should match reader-view-close-button in browser.ftl
+menu-view-close-readerview =
+    .label = Close Reader View
+    .accesskey = R
+
+##
+
+menu-view-show-all-tabs =
+    .label = Show All Tabs
+    .accesskey = A
+menu-view-bidi-switch-page-direction =
+    .label = Switch Page Direction
+    .accesskey = D
+
+## History Menu
+
+menu-history =
+    .label = History
+    .accesskey = s
+menu-history-show-all-history =
+    .label = Show All History
+menu-history-clear-recent-history =
+    .label = Clear Recent History…
+menu-history-synced-tabs =
+    .label = Synced Tabs
+menu-history-restore-last-session =
+    .label = Restore Previous Session
+menu-history-hidden-tabs =
+    .label = Hidden Tabs
+menu-history-undo-menu =
+    .label = Recently Closed Tabs
+menu-history-undo-window-menu =
+    .label = Recently Closed Windows
+# "Search" is a verb, as in "Search in History"
+menu-history-search =
+    .label = Search History
+
+## Bookmarks Menu
+
+menu-bookmarks-menu =
+    .label = Bookmarks
+    .accesskey = B
+menu-bookmarks-manage =
+    .label = Manage Bookmarks
+menu-bookmark-tab =
+    .label = Bookmark Current Tab…
+menu-edit-bookmark =
+    .label = Edit This Bookmark…
+# "Search" is a verb, as in "Search in bookmarks"
+menu-bookmarks-search =
+    .label = Search Bookmarks
+menu-bookmarks-all-tabs =
+    .label = Bookmark All Tabs…
+menu-bookmarks-toolbar =
+    .label = Bookmarks Toolbar
+menu-bookmarks-other =
+    .label = Other Bookmarks
+menu-bookmarks-mobile =
+    .label = Mobile Bookmarks
+
+## Tools Menu
+
+menu-tools =
+    .label = Tools
+    .accesskey = T
+menu-tools-downloads =
+    .label = Downloads
+    .accesskey = D
+menu-tools-addons-and-themes =
+    .label = Add-ons and Themes
+    .accesskey = A
+menu-tools-fxa-sign-in2 =
+    .label = Sign In
+    .accesskey = g
+menu-tools-turn-on-sync2 =
+    .label = Turn on Sync…
+    .accesskey = n
+menu-tools-sync-now =
+    .label = Synchronise Now
+    .accesskey = o
+menu-tools-fxa-re-auth =
+    .label = Reconnect to { -brand-product-name }…
+    .accesskey = R
+menu-tools-browser-tools =
+    .label = Browser Tools
+    .accesskey = B
+menu-tools-task-manager =
+    .label = Task Manager
+    .accesskey = M
+menu-tools-page-source =
+    .label = Page Source
+    .accesskey = o
+menu-tools-page-info =
+    .label = Page Info
+    .accesskey = I
+menu-settings =
+    .label = Settings
+    .accesskey =
+        { PLATFORM() ->
+            [windows] S
+           *[other] n
+        }
+menu-tools-layout-debugger =
+    .label = Layout Debugger
+    .accesskey = L
+
+## Window Menu
+
+menu-window-menu =
+    .label = Window
+menu-window-bring-all-to-front =
+    .label = Bring All to Front
+
+## Help Menu
+
+
+# NOTE: For Engineers, any additions or changes to Help menu strings should
+# also be reflected in the related strings in appmenu.ftl. Those strings, by
+# convention, will have the same ID as these, but prefixed with "app".
+# Example: appmenu-get-help
+#
+# These strings are duplicated to allow for different casing depending on
+# where the strings appear.
+
+menu-help =
+    .label = Help
+    .accesskey = H
+menu-get-help =
+    .label = Get Help
+    .accesskey = H
+menu-help-more-troubleshooting-info =
+    .label = More Troubleshooting Information
+    .accesskey = T
+menu-help-report-site-issue =
+    .label = Report Site Issue…
+menu-help-share-ideas =
+    .label = Share Ideas and Feedback…
+    .accesskey = S
+menu-help-enter-troubleshoot-mode2 =
+    .label = Troubleshoot Mode…
+    .accesskey = M
+menu-help-exit-troubleshoot-mode =
+    .label = Turn Troubleshoot Mode Off
+    .accesskey = M
+menu-help-switch-device =
+    .label = Switching to a New Device
+    .accesskey = N
+# Label of the Help menu item. Either this or
+# menu-help-notdeceptive is shown.
+menu-help-report-deceptive-site =
+    .label = Report Deceptive Site…
+    .accesskey = d
+menu-help-not-deceptive =
+    .label = This Isn’t a Deceptive Site…
+    .accesskey = D
+menu-report-broken-site =
+    .label = Report Broken Site
diff --git a/l10n-en-GB/browser/browser/migration.ftl b/l10n-en-GB/browser/browser/migration.ftl
new file mode 100644
index 0000000000..59303b50f6
--- /dev/null
+++ b/l10n-en-GB/browser/browser/migration.ftl
@@ -0,0 +1,174 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+migration-wizard =
+    .title = Import Wizard
+
+import-from =
+    { PLATFORM() ->
+        [windows] Import Options, Bookmarks, History, Passwords and other data from:
+       *[other] Import Preferences, Bookmarks, History, Passwords and other data from:
+    }
+
+import-from-bookmarks = Import Bookmarks from:
+import-from-ie =
+    .label = Microsoft Internet Explorer
+    .accesskey = M
+import-from-edge =
+    .label = Microsoft Edge
+    .accesskey = E
+import-from-edge-legacy =
+    .label = Microsoft Edge Legacy
+    .accesskey = L
+import-from-edge-beta =
+    .label = Microsoft Edge Beta
+    .accesskey = d
+import-from-nothing =
+    .label = Don’t import anything
+    .accesskey = D
+import-from-safari =
+    .label = Safari
+    .accesskey = S
+import-from-opera =
+    .label = Opera
+    .accesskey = O
+import-from-vivaldi =
+    .label = Vivaldi
+    .accesskey = V
+import-from-brave =
+    .label = Brave
+    .accesskey = r
+import-from-canary =
+    .label = Chrome Canary
+    .accesskey = n
+import-from-chrome =
+    .label = Chrome
+    .accesskey = C
+import-from-chrome-beta =
+    .label = Chrome Beta
+    .accesskey = B
+import-from-chrome-dev =
+    .label = Chrome Dev
+    .accesskey = D
+import-from-chromium =
+    .label = Chromium
+    .accesskey = u
+import-from-firefox =
+    .label = Firefox
+    .accesskey = x
+import-from-360se =
+    .label = 360 Secure Browser
+    .accesskey = 3
+import-from-opera-gx =
+    .label = Opera GX
+    .accesskey = G
+
+no-migration-sources = No programs that contain bookmarks, history or password data could be found.
+
+import-source-page-title = Import Settings and Data
+import-items-page-title = Items to Import
+
+import-items-description = Select which items to import:
+
+import-permissions-page-title = Please give { -brand-short-name } permissions
+
+# Do not translate "Safari" (the name of the browser on Apple devices)
+import-safari-permissions-string = macOS requires you to explicitly allow { -brand-short-name } to access Safari’s data. Click “Continue”, select the “Safari“ folder in the Finder dialogue that appears and then click “Open”.
+
+import-migrating-page-title = Importing…
+
+import-migrating-description = The following items are currently being imported…
+
+import-select-profile-page-title = Select Profile
+
+import-select-profile-description = The following profiles are available to import from:
+
+import-done-page-title = Import Complete
+
+import-done-description = The following items were successfully imported:
+
+import-close-source-browser = Please ensure the selected browser is closed before continuing.
+
+source-name-ie = Internet Explorer
+source-name-edge = Microsoft Edge
+source-name-chrome = Google Chrome
+
+imported-safari-reading-list = Reading List (From Safari)
+imported-edge-reading-list = Reading List (From Edge)
+
+## Browser data types
+## All of these strings get a $browser variable passed in.
+## You can use the browser variable to differentiate the name of items,
+## which may have different labels in different browsers.
+## The supported values for the $browser variable are:
+## 360se
+## chrome
+## edge
+## firefox
+## ie
+## safari
+## The various beta and development versions of edge and chrome all get
+## normalized to just "edge" and "chrome" for these strings.
+
+browser-data-cookies-checkbox =
+    .label = Cookies
+browser-data-cookies-label =
+    .value = Cookies
+
+browser-data-history-checkbox =
+    .label =
+        { $browser ->
+            [firefox] Browsing History and Bookmarks
+           *[other] Browsing History
+        }
+browser-data-history-label =
+    .value =
+        { $browser ->
+            [firefox] Browsing History and Bookmarks
+           *[other] Browsing History
+        }
+
+browser-data-formdata-checkbox =
+    .label = Saved Form History
+browser-data-formdata-label =
+    .value = Saved Form History
+
+# This string should use the same phrase for "logins and passwords" as the
+# label in the main hamburger menu that opens about:logins.
+browser-data-passwords-checkbox =
+    .label = Saved Logins and Passwords
+# This string should use the same phrase for "logins and passwords" as the
+# label in the main hamburger menu that opens about:logins.
+browser-data-passwords-label =
+    .value = Saved Logins and Passwords
+
+browser-data-bookmarks-checkbox =
+    .label =
+        { $browser ->
+            [ie] Favourites
+            [edge] Favourites
+           *[other] Bookmarks
+        }
+browser-data-bookmarks-label =
+    .value =
+        { $browser ->
+            [ie] Favourites
+            [edge] Favourites
+           *[other] Bookmarks
+        }
+
+browser-data-otherdata-checkbox =
+    .label = Other Data
+browser-data-otherdata-label =
+    .label = Other Data
+
+browser-data-session-checkbox =
+    .label = Windows and Tabs
+browser-data-session-label =
+    .value = Windows and Tabs
+
+browser-data-payment-methods-checkbox =
+    .label = Payment methods
+browser-data-payment-methods-label =
+    .value = Payment methods
diff --git a/l10n-en-GB/browser/browser/migrationWizard.ftl b/l10n-en-GB/browser/browser/migrationWizard.ftl
new file mode 100644
index 0000000000..548e4737fa
--- /dev/null
+++ b/l10n-en-GB/browser/browser/migrationWizard.ftl
@@ -0,0 +1,286 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+migration-wizard-selection-header = Import Browser Data
+migration-wizard-selection-list = Select the data you’d like to import.
+# Shown in the new migration wizard's dropdown selector for choosing the browser
+# to import from. This variant is shown when the selected browser doesn't support
+# user profiles, and so we only show the browser name.
+#
+# Variables:
+#  $sourceBrowser (String): the name of the browser to import from.
+migration-wizard-selection-option-without-profile = { $sourceBrowser }
+# Shown in the new migration wizard's dropdown selector for choosing the browser
+# and user profile to import from. This variant is shown when the selected browser
+# supports user profiles.
+#
+# Variables:
+#  $sourceBrowser (String): the name of the browser to import from.
+#  $profileName (String): the name of the user profile to import from.
+migration-wizard-selection-option-with-profile = { $sourceBrowser } — { $profileName }
+
+# Each migrator is expected to include a display name string, and that display
+# name string should have a key with "migration-wizard-migrator-display-name-"
+# as a prefix followed by the unique identification key for the migrator.
+
+migration-wizard-migrator-display-name-brave = Brave
+migration-wizard-migrator-display-name-canary = Chrome Canary
+migration-wizard-migrator-display-name-chrome = Chrome
+migration-wizard-migrator-display-name-chrome-beta = Chrome Beta
+migration-wizard-migrator-display-name-chrome-dev = Chrome Dev
+migration-wizard-migrator-display-name-chromium = Chromium
+migration-wizard-migrator-display-name-chromium-360se = 360 Secure Browser
+migration-wizard-migrator-display-name-chromium-edge = Microsoft Edge
+migration-wizard-migrator-display-name-chromium-edge-beta = Microsoft Edge Beta
+migration-wizard-migrator-display-name-edge-legacy = Microsoft Edge Legacy
+migration-wizard-migrator-display-name-firefox = Firefox
+migration-wizard-migrator-display-name-file-password-csv = Passwords from CSV file
+migration-wizard-migrator-display-name-file-bookmarks = Bookmarks from HTML file
+migration-wizard-migrator-display-name-ie = Microsoft Internet Explorer
+migration-wizard-migrator-display-name-opera = Opera
+migration-wizard-migrator-display-name-opera-gx = Opera GX
+migration-wizard-migrator-display-name-safari = Safari
+migration-wizard-migrator-display-name-vivaldi = Vivaldi
+migration-source-name-ie = Internet Explorer
+migration-source-name-edge = Microsoft Edge
+migration-source-name-chrome = Google Chrome
+migration-imported-safari-reading-list = Reading List (From Safari)
+migration-imported-edge-reading-list = Reading List (From Edge)
+
+## These strings are shown if the selected browser data directory is unreadable.
+## In practice, this tends to only occur on Linux when Firefox
+## is installed as a Snap.
+
+migration-no-permissions-message = { -brand-short-name } does not have access to other browsers’ profiles installed on this device.
+migration-no-permissions-instructions = To continue importing data from another browser, grant { -brand-short-name } access to its profile folder.
+migration-no-permissions-instructions-step1 = Select “Continue”
+# The second step in getting permissions to read data for the selected
+# browser type.
+#
+# Variables:
+#  $permissionsPath (String): the file system path that the user will need to grant read permission to.
+migration-no-permissions-instructions-step2 = In the file picker, navigate to <code>{ $permissionsPath }</code> and choose “Select”
+
+## These strings will be displayed based on how many resources are selected to import
+
+migration-all-available-data-label = Import all available data
+migration-no-selected-data-label = No data selected for import
+migration-selected-data-label = Import selected data
+
+##
+
+migration-select-all-option-label = Select all
+migration-bookmarks-option-label = Bookmarks
+# Favorites is used for Bookmarks when importing from Internet Explorer or
+# Edge, as this is the terminology for bookmarks on those browsers.
+migration-favorites-option-label = Favourites
+migration-logins-and-passwords-option-label = Saved logins and passwords
+migration-passwords-option-label = Saved passwords
+migration-history-option-label = Browsing history
+migration-extensions-option-label = Extensions
+migration-form-autofill-option-label = Form autofill data
+migration-payment-methods-option-label = Payment methods
+migration-cookies-option-label = Cookies
+migration-session-option-label = Windows and tabs
+migration-otherdata-option-label = Other data
+migration-passwords-from-file-progress-header = Import Passwords File
+migration-passwords-from-file-success-header = Passwords Imported Successfully
+migration-passwords-from-file = Checking file for passwords
+migration-passwords-new = New passwords
+migration-passwords-updated = Existing passwords
+migration-passwords-from-file-no-valid-data = The file doesn’t include any valid password data. Pick another file.
+migration-passwords-from-file-picker-title = Import Passwords File
+# A description for the .csv file format that may be shown as the file type
+# filter by the operating system.
+migration-passwords-from-file-csv-filter-title =
+    { PLATFORM() ->
+        [macos] CSV Document
+       *[other] CSV File
+    }
+# A description for the .tsv file format that may be shown as the file type
+# filter by the operating system. TSV is short for 'tab separated values'.
+migration-passwords-from-file-tsv-filter-title =
+    { PLATFORM() ->
+        [macos] TSV Document
+       *[other] TSV File
+    }
+# Shown in the migration wizard after importing passwords from a file
+# has completed, if new passwords were added.
+#
+# Variables:
+#  $newEntries (Number): the number of new successfully imported passwords
+migration-wizard-progress-success-new-passwords =
+    { $newEntries ->
+        [one] { $newEntries } added
+       *[other] { $newEntries } added
+    }
+# Shown in the migration wizard after importing passwords from a file
+# has completed, if existing passwords were updated.
+#
+# Variables:
+#  $updatedEntries (Number): the number of updated passwords
+migration-wizard-progress-success-updated-passwords =
+    { $updatedEntries ->
+        [one] { $updatedEntries } updated
+       *[other] { $updatedEntries } updated
+    }
+migration-bookmarks-from-file-picker-title = Import Bookmarks File
+migration-bookmarks-from-file-progress-header = Importing Bookmarks
+migration-bookmarks-from-file = Bookmarks
+migration-bookmarks-from-file-success-header = Bookmarks Imported Successfully
+migration-bookmarks-from-file-no-valid-data = The file doesn’t include any bookmark data. Pick another file.
+# A description for the .html file format that may be shown as the file type
+# filter by the operating system.
+migration-bookmarks-from-file-html-filter-title =
+    { PLATFORM() ->
+        [macos] HTML Document
+       *[other] HTML File
+    }
+# A description for the .json file format that may be shown as the file type
+# filter by the operating system.
+migration-bookmarks-from-file-json-filter-title = JSON File
+# Shown in the migration wizard after importing bookmarks from a file
+# has completed.
+#
+# Variables:
+#  $newEntries (Number): the number of imported bookmarks.
+migration-wizard-progress-success-new-bookmarks =
+    { $newEntries ->
+        [one] { $newEntries } bookmark
+       *[other] { $newEntries } bookmarks
+    }
+migration-import-button-label = Import
+migration-choose-to-import-from-file-button-label = Import From File
+migration-import-from-file-button-label = Select File
+migration-cancel-button-label = Cancel
+migration-done-button-label = Done
+migration-continue-button-label = Continue
+migration-wizard-import-browser-no-browsers = { -brand-short-name } couldn’t find any programmes that contain bookmark, history or password data.
+migration-wizard-import-browser-no-resources = There was an error. { -brand-short-name } can’t find any data to import from that browser profile.
+
+## These strings will be used to create a dynamic list of items that can be
+## imported. The list will be created using Intl.ListFormat(), so it will
+## follow each locale's rules, and the first item will be capitalized by code.
+## When applicable, the resources should be in their plural form.
+## For example, a possible list could be "Bookmarks, passwords and autofill data".
+
+migration-list-bookmark-label = bookmarks
+# “favorites” refers to bookmarks in Edge and Internet Explorer. Use the same terminology
+# if the browser is available in your language.
+migration-list-favorites-label = favourites
+migration-list-password-label = passwords
+migration-list-history-label = history
+migration-list-extensions-label = extensions
+migration-list-autofill-label = autofill data
+migration-list-payment-methods-label = payment methods
+
+##
+
+migration-wizard-progress-header = Importing Data
+# This header appears in the final page of the migration wizard only if
+# all resources were imported successfully.
+migration-wizard-progress-done-header = Data Imported Successfully
+# This header appears in the final page of the migration wizard if only
+# some of the resources were imported successfully. This is meant to be
+# distinct from migration-wizard-progress-done-header, which is only shown
+# if all resources were imported successfully.
+migration-wizard-progress-done-with-warnings-header = Data Import Complete
+migration-wizard-progress-icon-in-progress =
+    .aria-label = Importing…
+migration-wizard-progress-icon-completed =
+    .aria-label = Completed
+migration-safari-password-import-header = Import Passwords from Safari
+migration-safari-password-import-steps-header = To import Safari passwords:
+migration-safari-password-import-step1 = In Safari, open “Safari” menu and go to Preferences > Passwords
+migration-safari-password-import-step2 = Select the <img data-l10n-name="safari-icon-3dots"/> button and choose “Export All Passwords”
+migration-safari-password-import-step3 = Save the passwords file
+migration-safari-password-import-step4 = Use “Select File” below to choose the passwords file you saved
+migration-safari-password-import-skip-button = Skip
+migration-safari-password-import-select-button = Select File
+# Shown in the migration wizard after importing bookmarks from another
+# browser has completed.
+#
+# Variables:
+#  $quantity (Number): the number of successfully imported bookmarks
+migration-wizard-progress-success-bookmarks =
+    { $quantity ->
+        [one] { $quantity } bookmark
+       *[other] { $quantity } bookmarks
+    }
+# Shown in the migration wizard after importing bookmarks from either
+# Internet Explorer or Edge.
+#
+# Use the same terminology if the browser is available in your language.
+#
+# Variables:
+#  $quantity (Number): the number of successfully imported bookmarks
+migration-wizard-progress-success-favorites =
+    { $quantity ->
+        [one] { $quantity } favourite
+       *[other] { $quantity } favourites
+    }
+
+## The import process identifies extensions installed in other supported
+## browsers and installs the corresponding (matching) extensions compatible
+## with Firefox, if available.
+
+# Shown in the migration wizard after importing all matched extensions
+# from supported browsers.
+#
+# Variables:
+#   $quantity (Number): the number of successfully imported extensions
+migration-wizard-progress-success-extensions =
+    { $quantity ->
+        [one] { $quantity } extension
+       *[other] { $quantity } extensions
+    }
+# Shown in the migration wizard after importing a partial amount of
+# matched extensions from supported browsers.
+#
+# Variables:
+#   $matched (Number): the number of matched imported extensions
+#   $quantity (Number): the number of total extensions found during import
+migration-wizard-progress-partial-success-extensions = { $matched } of { $quantity } extensions
+migration-wizard-progress-extensions-support-link = Learn how { -brand-product-name } matches extensions
+# Shown in the migration wizard if there are no matched extensions
+# on import from supported browsers.
+migration-wizard-progress-no-matched-extensions = No matching extensions
+migration-wizard-progress-extensions-addons-link = Browse extensions for { -brand-short-name }
+
+##
+
+# Shown in the migration wizard after importing passwords from another
+# browser has completed.
+#
+# Variables:
+#  $quantity (Number): the number of successfully imported passwords
+migration-wizard-progress-success-passwords =
+    { $quantity ->
+        [one] { $quantity } password
+       *[other] { $quantity } passwords
+    }
+# Shown in the migration wizard after importing history from another
+# browser has completed.
+#
+# Variables:
+#  $maxAgeInDays (Number): the maximum number of days of history that might be imported.
+migration-wizard-progress-success-history =
+    { $maxAgeInDays ->
+        [one] From the last day
+       *[other] From the last { $maxAgeInDays } days
+    }
+migration-wizard-progress-success-formdata = Form history
+# Shown in the migration wizard after importing payment methods from another
+# browser has completed.
+#
+# Variables:
+#  $quantity (Number): the number of successfully imported payment methods
+migration-wizard-progress-success-payment-methods =
+    { $quantity ->
+        [one] { $quantity } payment method
+       *[other] { $quantity } payment methods
+    }
+migration-wizard-safari-permissions-sub-header = To import Safari bookmarks and browsing history:
+migration-wizard-safari-instructions-continue = Select “Continue”
+migration-wizard-safari-instructions-folder = Select Safari folder in the list and choose “Open”
diff --git a/l10n-en-GB/browser/browser/newtab/asrouter.ftl b/l10n-en-GB/browser/browser/newtab/asrouter.ftl
new file mode 100644
index 0000000000..d344dfd1a5
--- /dev/null
+++ b/l10n-en-GB/browser/browser/newtab/asrouter.ftl
@@ -0,0 +1,274 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+## These messages are used as headings in the recommendation doorhanger
+
+cfr-doorhanger-extension-heading = Recommended Extension
+cfr-doorhanger-feature-heading = Recommended Feature
+
+##
+
+cfr-doorhanger-extension-sumo-link =
+    .tooltiptext = Why am I seeing this
+cfr-doorhanger-extension-cancel-button = Not Now
+    .accesskey = N
+cfr-doorhanger-extension-ok-button = Add Now
+    .accesskey = A
+cfr-doorhanger-extension-manage-settings-button = Manage Recommendation Settings
+    .accesskey = M
+cfr-doorhanger-extension-never-show-recommendation = Don’t Show Me This Recommendation
+    .accesskey = S
+cfr-doorhanger-extension-learn-more-link = Learn more
+# This string is used on a new line below the add-on name
+# Variables:
+#   $name (String) - Add-on author name
+cfr-doorhanger-extension-author = by { $name }
+# This is a notification displayed in the address bar.
+# When clicked it opens a panel with a message for the user.
+cfr-doorhanger-extension-notification = Recommendation
+# .a11y-announcement is extracted in JS and announced via A11y.announce.
+cfr-doorhanger-extension-notification2 = Recommendation
+    .tooltiptext = Extension recommendation
+    .a11y-announcement = Extension recommendation available
+# This is a notification displayed in the address bar.
+# When clicked it opens a panel with a message for the user.
+# .a11y-announcement is extracted in JS and announced via A11y.announce.
+cfr-doorhanger-feature-notification = Recommendation
+    .tooltiptext = Feature recommendation
+    .a11y-announcement = Feature recommendation available
+
+## Add-on statistics
+## These strings are used to display the total number of
+## users and rating for an add-on. They are shown next to each other.
+
+# Variables:
+#   $total (Number) - The rating of the add-on from 1 to 5
+cfr-doorhanger-extension-rating =
+    .tooltiptext =
+        { $total ->
+            [one] { $total } star
+           *[other] { $total } stars
+        }
+# Variables:
+#   $total (Number) - The total number of users using the add-on
+cfr-doorhanger-extension-total-users =
+    { $total ->
+        [one] { $total } user
+       *[other] { $total } users
+    }
+
+## Firefox Accounts Message
+
+cfr-doorhanger-bookmark-fxa-header = Synchronise your bookmarks everywhere.
+cfr-doorhanger-bookmark-fxa-body = Great find! Now don’t be left without this bookmark on your mobile devices. Get Started with a { -fxaccount-brand-name }.
+cfr-doorhanger-bookmark-fxa-link-text = Synchronise bookmarks now…
+cfr-doorhanger-bookmark-fxa-close-btn-tooltip =
+    .aria-label = Close button
+    .title = Close
+
+## Protections panel
+
+cfr-protections-panel-header = Browse without being followed
+cfr-protections-panel-body = Keep your data to yourself. { -brand-short-name } protects you from many of the most common trackers that follow what you do online.
+cfr-protections-panel-link-text = Learn more
+
+## What's New toolbar button and panel
+
+# This string is used by screen readers to offer a text based alternative for
+# the notification icon
+cfr-badge-reader-label-newfeature = New feature:
+cfr-whatsnew-button =
+    .label = What’s New
+    .tooltiptext = What’s New
+cfr-whatsnew-release-notes-link-text = Read the release notes
+
+## Enhanced Tracking Protection Milestones
+
+# Variables:
+#   $blockedCount (Number) - The total count of blocked trackers. This number will always be greater than 1.
+#   $date (Datetime) - The date we began recording the count of blocked trackers
+cfr-doorhanger-milestone-heading2 =
+    { $blockedCount ->
+       *[other] { -brand-short-name } blocked over <b>{ $blockedCount }</b> trackers since { DATETIME($date, month: "long", year: "numeric") }!
+    }
+cfr-doorhanger-milestone-ok-button = See All
+    .accesskey = S
+cfr-doorhanger-milestone-close-button = Close
+    .accesskey = C
+
+## DOH Message
+
+cfr-doorhanger-doh-body = Your privacy matters. { -brand-short-name } now securely routes your DNS requests whenever possible to a partner service to protect you while you browse.
+cfr-doorhanger-doh-header = More secure, encrypted DNS lookups
+cfr-doorhanger-doh-primary-button-2 = Okay
+    .accesskey = O
+cfr-doorhanger-doh-secondary-button = Disable
+    .accesskey = D
+
+## Full Video Support CFR message
+
+cfr-doorhanger-video-support-body = Videos on this site may not play correctly on this version of { -brand-short-name }. For full video support, update { -brand-short-name } now.
+cfr-doorhanger-video-support-header = Update { -brand-short-name } to play video
+cfr-doorhanger-video-support-primary-button = Update Now
+    .accesskey = U
+
+## VPN promotion dialog for public Wi-Fi users
+##
+## If a user is detected to be on a public Wi-Fi network, they are given a
+## bit of info about how to improve their privacy and then offered a button
+## to the Mozilla VPN page and a link to dismiss the dialog.
+
+# This header text can be explicitly wrapped.
+spotlight-public-wifi-vpn-header = Looks like you’re using public Wi-Fi
+spotlight-public-wifi-vpn-body = To hide your location and browsing activity, consider a Virtual Private Network. It will help keep you protected when browsing in public places like airports and coffee shops.
+spotlight-public-wifi-vpn-primary-button = Stay private with { -mozilla-vpn-brand-name }
+    .accesskey = S
+spotlight-public-wifi-vpn-link = Not Now
+    .accesskey = N
+
+## Emotive Continuous Onboarding
+
+spotlight-better-internet-header = A better internet starts with you
+spotlight-better-internet-body = When you use { -brand-short-name }, you’re voting for an open and accessible internet that’s better for everyone.
+spotlight-peace-mind-header = We’ve got you covered
+spotlight-peace-mind-body = Every month, { -brand-short-name } blocks an average of over 3,000 trackers per user. Because nothing, especially privacy nuisances like trackers, should stand between you and the good internet.
+spotlight-pin-primary-button =
+    { PLATFORM() ->
+        [macos] Keep in Dock
+       *[other] Pin to taskbar
+    }
+spotlight-pin-secondary-button = Not now
+
+## MR2022 Background Update Windows native toast notification strings.
+##
+## These strings will be displayed by the Windows operating system in
+## a native toast, like:
+##
+## <b>multi-line title</b>
+## multi-line text
+## <img>
+## [ primary button ] [ secondary button ]
+##
+## The button labels are fitted into narrow fixed-width buttons by
+## Windows and therefore must be as narrow as possible.
+
+mr2022-background-update-toast-title = New { -brand-short-name }. More private. Fewer trackers. No compromises.
+mr2022-background-update-toast-text = Try the newest { -brand-short-name } now, upgraded with our strongest anti-tracking protection yet.
+# This button label will be fitted into a narrow fixed-width button by
+# Windows. Try to not exceed the width of the English text (compare it
+# using a variable font like Arial): the button can only fit 1-2
+# additional characters, exceeding characters will be truncated.
+mr2022-background-update-toast-primary-button-label = Open { -brand-shorter-name } Now
+# This button label will be fitted into a narrow fixed-width button by
+# Windows. Try to not exceed the width of the English text (compare it using a
+# variable font like Arial): the button can only fit 1-2 additional characters,
+# exceeding characters will be truncated.
+mr2022-background-update-toast-secondary-button-label = Remind Me Later
+
+## Firefox View CFR
+
+firefoxview-cfr-primarybutton = Try it
+    .accesskey = T
+firefoxview-cfr-secondarybutton = Not now
+    .accesskey = N
+firefoxview-cfr-header-v2 = Quickly pick up where you left off
+firefoxview-cfr-body-v2 = Get recently closed tabs back, plus seamlessly hop between devices with { -firefoxview-brand-name }.
+
+## Firefox View Spotlight
+
+firefoxview-spotlight-promo-title = Say hello to { -firefoxview-brand-name }
+# “Poof” refers to the expression to convey when something or someone suddenly disappears, or in this case, reappears. For example, “Poof, it’s gone.”
+firefoxview-spotlight-promo-subtitle = Want that open tab on your phone? Grab it. Need that site you just visited? Poof, it’s back with { -firefoxview-brand-name }.
+firefoxview-spotlight-promo-primarybutton = See how it works
+firefoxview-spotlight-promo-secondarybutton = Skip
+
+## Colorways expiry reminder CFR
+
+colorways-cfr-primarybutton = Choose colourway
+    .accesskey = C
+# "shades" refers to the different color options available to users in colorways.
+colorways-cfr-body = Colour your browser with { -brand-short-name } exclusive shades inspired by voices that changed culture.
+colorways-cfr-header-28days = Independent Voices colourways expire January 16
+colorways-cfr-header-14days = Independent Voices colourways expire in two weeks
+colorways-cfr-header-7days = Independent Voices colourways expire this week
+colorways-cfr-header-today = Independent Voices colourways expire today
+
+## Cookie Banner Handling CFR
+
+cfr-cbh-header = Allow { -brand-short-name } to reject cookie banners?
+cfr-cbh-body = { -brand-short-name } can automatically reject many cookie banner requests.
+cfr-cbh-confirm-button = Reject cookie banners
+    .accesskey = R
+cfr-cbh-dismiss-button = Not now
+    .accesskey = N
+cookie-banner-blocker-cfr-header = { -brand-short-name } just blocked cookies for you
+cookie-banner-blocker-cfr-body = We automatically refuse many cookie pop-ups to make it tough for sites to track you.
+
+## These strings are used in the Fox doodle Pin/set default spotlights
+
+july-jam-headline = We’ve got you covered
+july-jam-body = Every month, { -brand-short-name } blocks an average of 3,000+ trackers per user, giving you safe, speedy access to the good internet.
+july-jam-set-default-primary = Open my links with { -brand-short-name }
+fox-doodle-pin-headline = Welcome back
+# “indie” is short for the term “independent”.
+# In this instance, free from outside influence or control.
+fox-doodle-pin-body = Here’s a quick reminder that you can keep your favourite indie browser just one click away.
+fox-doodle-pin-primary = Open my links with { -brand-short-name }
+fox-doodle-pin-secondary = Not now
+
+## These strings are used in the Set Firefox as Default PDF Handler for Existing Users experiment
+
+set-default-pdf-handler-headline = <strong>Your PDFs now open in { -brand-short-name }.</strong> Edit or sign forms directly in your browser. To change, search “PDF” in settings.
+set-default-pdf-handler-primary = Got it
+
+## FxA sync CFR
+
+fxa-sync-cfr-header = New device in your future?
+fxa-sync-cfr-body = Make sure your latest bookmarks, passwords, and tabs come with you any time you open a new { -brand-product-name } browser.
+fxa-sync-cfr-primary = Learn more
+    .accesskey = L
+fxa-sync-cfr-secondary = Remind me later
+    .accesskey = R
+
+## Device Migration FxA Spotlight
+
+device-migration-fxa-spotlight-header = Using an older device?
+device-migration-fxa-spotlight-body = Back up your data to make sure you don’t lose important info like bookmarks and passwords — especially if you switch to a new device.
+device-migration-fxa-spotlight-primary-button = How to back up my data
+device-migration-fxa-spotlight-link = Remind me later
+device-migration-fxa-spotlight-heavy-user-header = Don’t forget to back up your data
+device-migration-fxa-spotlight-heavy-user-body = Make sure important info — like bookmarks and passwords — is updated and protected across all your devices.
+device-migration-fxa-spotlight-heavy-user-primary-button = Get started
+device-migration-fxa-spotlight-older-device-header = Peace of mind, from { -brand-product-name }
+device-migration-fxa-spotlight-older-device-body = An account keeps your important info updated and protected on any device you connect.
+device-migration-fxa-spotlight-older-device-primary-button = Create an account
+device-migration-fxa-spotlight-getting-new-device-header-2 = New device in your future?
+device-migration-fxa-spotlight-getting-new-device-body-2 = Follow a few simple steps to bring your bookmarks, history, and passwords with you when you get started on a new device.
+device-migration-fxa-spotlight-getting-new-device-primary-button = How to back up my data
+
+## Set as Default PDF Reader Infobar
+
+# The question portion of the following message should have the <strong> and </strong> tags surrounding it.
+pdf-default-notification-message = <strong>Make { -brand-short-name } your default PDF reader?</strong> Use { -brand-short-name } to read and edit PDFs saved to your computer.
+pdf-default-notification-set-default-button =
+    .label = Set as default
+pdf-default-notification-decline-button =
+    .label = Not now
+
+## Launch on login infobar notification
+
+launch-on-login-infobar-message = <strong>Open { -brand-short-name } every time you restart your computer?</strong> Now you can set { -brand-short-name } to open automatically when you restart your device.
+launch-on-login-learnmore = Learn more
+launch-on-login-infobar-confirm-button = Yes, open { -brand-short-name }
+    .accesskey = Y
+launch-on-login-infobar-reject-button = Not now
+    .accesskey = N
+
+## These string variants are used when the “launch on login” infobar
+## notification is displayed for a second time.
+
+launch-on-login-infobar-final-message = <strong>Open { -brand-short-name } every time you restart your computer?</strong> To manage your Startup preferences, search “startup” in settings.
+launch-on-login-infobar-final-reject-button = No thanks
+    .accesskey = N
diff --git a/l10n-en-GB/browser/browser/newtab/newtab.ftl b/l10n-en-GB/browser/browser/newtab/newtab.ftl
new file mode 100644
index 0000000000..f04ec3de2e
--- /dev/null
+++ b/l10n-en-GB/browser/browser/newtab/newtab.ftl
@@ -0,0 +1,272 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+### Firefox Home / New Tab strings for about:home / about:newtab.
+
+newtab-page-title = New Tab
+newtab-settings-button =
+    .title = Customise your New Tab page
+newtab-personalize-icon-label =
+    .title = Personalise new tab
+    .aria-label = Personalise new tab
+newtab-personalize-dialog-label =
+    .aria-label = Personalise
+
+## Search box component.
+
+# "Search" is a verb/action
+newtab-search-box-search-button =
+    .title = Search
+    .aria-label = Search
+# Variables:
+#   $engine (string) - The name of the user's default search engine
+newtab-search-box-handoff-text = Search with { $engine } or enter address
+newtab-search-box-handoff-text-no-engine = Search or enter address
+# Variables:
+#   $engine (string) - The name of the user's default search engine
+newtab-search-box-handoff-input =
+    .placeholder = Search with { $engine } or enter address
+    .title = Search with { $engine } or enter address
+    .aria-label = Search with { $engine } or enter address
+newtab-search-box-handoff-input-no-engine =
+    .placeholder = Search or enter address
+    .title = Search or enter address
+    .aria-label = Search or enter address
+newtab-search-box-text = Search the web
+newtab-search-box-input =
+    .placeholder = Search the web
+    .aria-label = Search the web
+
+## Top Sites - General form dialog.
+
+newtab-topsites-add-search-engine-header = Add Search Engine
+newtab-topsites-add-shortcut-header = New Shortcut
+newtab-topsites-edit-topsites-header = Edit Top Site
+newtab-topsites-edit-shortcut-header = Edit Shortcut
+newtab-topsites-title-label = Title
+newtab-topsites-title-input =
+    .placeholder = Enter a title
+newtab-topsites-url-label = URL
+newtab-topsites-url-input =
+    .placeholder = Type or paste a URL
+newtab-topsites-url-validation = Valid URL required
+newtab-topsites-image-url-label = Custom Image URL
+newtab-topsites-use-image-link = Use a custom image…
+newtab-topsites-image-validation = Image failed to load. Try a different URL.
+
+## Top Sites - General form dialog buttons. These are verbs/actions.
+
+newtab-topsites-cancel-button = Cancel
+newtab-topsites-delete-history-button = Delete from History
+newtab-topsites-save-button = Save
+newtab-topsites-preview-button = Preview
+newtab-topsites-add-button = Add
+
+## Top Sites - Delete history confirmation dialog.
+
+newtab-confirm-delete-history-p1 = Are you sure you want to delete every instance of this page from your history?
+# "This action" refers to deleting a page from history.
+newtab-confirm-delete-history-p2 = This action cannot be undone.
+
+## Top Sites - Sponsored label
+
+newtab-topsite-sponsored = Sponsored
+
+## Context Menu - Action Tooltips.
+
+# General tooltip for context menus.
+newtab-menu-section-tooltip =
+    .title = Open menu
+    .aria-label = Open menu
+# Tooltip for dismiss button
+newtab-dismiss-button-tooltip =
+    .title = Remove
+    .aria-label = Remove
+# This tooltip is for the context menu of Pocket cards or Topsites
+# Variables:
+#   $title (string) - The label or hostname of the site. This is for screen readers when the context menu button is focused/active.
+newtab-menu-content-tooltip =
+    .title = Open menu
+    .aria-label = Open context menu for { $title }
+# Tooltip on an empty topsite box to open the New Top Site dialog.
+newtab-menu-topsites-placeholder-tooltip =
+    .title = Edit this site
+    .aria-label = Edit this site
+
+## Context Menu: These strings are displayed in a context menu and are meant as a call to action for a given page.
+
+newtab-menu-edit-topsites = Edit
+newtab-menu-open-new-window = Open in a New Window
+newtab-menu-open-new-private-window = Open in a New Private Window
+newtab-menu-dismiss = Dismiss
+newtab-menu-pin = Pin
+newtab-menu-unpin = Unpin
+newtab-menu-delete-history = Delete from History
+newtab-menu-save-to-pocket = Save to { -pocket-brand-name }
+newtab-menu-delete-pocket = Delete from { -pocket-brand-name }
+newtab-menu-archive-pocket = Archive in { -pocket-brand-name }
+newtab-menu-show-privacy-info = Our sponsors & your privacy
+
+## Message displayed in a modal window to explain privacy and provide context for sponsored content.
+
+newtab-privacy-modal-button-done = Done
+newtab-privacy-modal-button-manage = Manage sponsored content settings
+newtab-privacy-modal-header = Your privacy matters.
+newtab-privacy-modal-paragraph-2 =
+    In addition to dishing up captivating stories, we also show you relevant,
+    highly-vetted content from select sponsors. Rest assured, <strong>your browsing
+    data never leaves your personal copy of { -brand-product-name }</strong> — we don’t see it, and our
+    sponsors don’t either.
+newtab-privacy-modal-link = Learn how privacy works on the new tab
+
+##
+
+# Bookmark is a noun in this case, "Remove bookmark".
+newtab-menu-remove-bookmark = Remove Bookmark
+# Bookmark is a verb here.
+newtab-menu-bookmark = Bookmark
+
+## Context Menu - Downloaded Menu. "Download" in these cases is not a verb,
+## it is a noun. As in, "Copy the link that belongs to this downloaded item".
+
+newtab-menu-copy-download-link = Copy Download Link
+newtab-menu-go-to-download-page = Go to Download Page
+newtab-menu-remove-download = Remove from History
+
+## Context Menu - Download Menu: These are platform specific strings found in the context menu of an item that has
+## been downloaded. The intention behind "this action" is that it will show where the downloaded file exists on the file
+## system for each operating system.
+
+newtab-menu-show-file =
+    { PLATFORM() ->
+        [macos] Show in Finder
+       *[other] Open Containing Folder
+    }
+newtab-menu-open-file = Open File
+
+## Card Labels: These labels are associated to pages to give
+## context on how the element is related to the user, e.g. type indicates that
+## the page is bookmarked, or is currently open on another device.
+
+newtab-label-visited = Visited
+newtab-label-bookmarked = Bookmarked
+newtab-label-removed-bookmark = Bookmark removed
+newtab-label-recommended = Trending
+newtab-label-saved = Saved to { -pocket-brand-name }
+newtab-label-download = Downloaded
+# This string is used in the story cards to indicate sponsored content
+# Variables:
+#   $sponsorOrSource (string) - The name of a company or their domain
+newtab-label-sponsored = { $sponsorOrSource } · Sponsored
+# This string is used at the bottom of story cards to indicate sponsored content
+# Variables:
+#   $sponsor (string) - The name of a sponsor
+newtab-label-sponsored-by = Sponsored by { $sponsor }
+# This string is used under the image of story cards to indicate source and time to read
+# Variables:
+#   $source (string) - The name of a company or their domain
+#   $timeToRead (number) - The estimated number of minutes to read this story
+newtab-label-source-read-time = { $source } · { $timeToRead } min
+
+## Section Menu: These strings are displayed in the section context menu and are
+## meant as a call to action for the given section.
+
+newtab-section-menu-remove-section = Remove Section
+newtab-section-menu-collapse-section = Collapse Section
+newtab-section-menu-expand-section = Expand Section
+newtab-section-menu-manage-section = Manage Section
+newtab-section-menu-manage-webext = Manage Extension
+newtab-section-menu-add-topsite = Add Top Site
+newtab-section-menu-add-search-engine = Add Search Engine
+newtab-section-menu-move-up = Move Up
+newtab-section-menu-move-down = Move Down
+newtab-section-menu-privacy-notice = Privacy Notice
+
+## Section aria-labels
+
+newtab-section-collapse-section-label =
+    .aria-label = Collapse Section
+newtab-section-expand-section-label =
+    .aria-label = Expand Section
+
+## Section Headers.
+
+newtab-section-header-topsites = Top Sites
+newtab-section-header-recent-activity = Recent activity
+# Variables:
+#   $provider (string) - Name of the corresponding content provider.
+newtab-section-header-pocket = Recommended by { $provider }
+
+## Empty Section States: These show when there are no more items in a section. Ex. When there are no more Pocket story recommendations, in the space where there would have been stories, this is shown instead.
+
+newtab-empty-section-highlights = Start browsing, and we’ll show some of the great articles, videos, and other pages you’ve recently visited or bookmarked here.
+# Ex. When there are no more Pocket story recommendations, in the space where there would have been stories, this is shown instead.
+# Variables:
+#   $provider (string) - Name of the content provider for this section, e.g "Pocket".
+newtab-empty-section-topstories = You’ve caught up. Check back later for more top stories from { $provider }. Can’t wait? Select a popular topic to find more great stories from around the web.
+
+## Empty Section (Content Discovery Experience). These show when there are no more stories or when some stories fail to load.
+
+newtab-discovery-empty-section-topstories-header = You are caught up!
+newtab-discovery-empty-section-topstories-content = Check back later for more stories.
+newtab-discovery-empty-section-topstories-try-again-button = Try Again
+newtab-discovery-empty-section-topstories-loading = Loading…
+# Displays when a layout in a section took too long to fetch articles.
+newtab-discovery-empty-section-topstories-timed-out = Oops! We almost loaded this section, but not quite.
+
+## Pocket Content Section.
+
+# This is shown at the bottom of the trending stories section and precedes a list of links to popular topics.
+newtab-pocket-read-more = Popular Topics:
+newtab-pocket-new-topics-title = Want even more stories? See these popular topics from { -pocket-brand-name }
+newtab-pocket-more-recommendations = More Recommendations
+newtab-pocket-learn-more = Learn more
+newtab-pocket-cta-button = Get { -pocket-brand-name }
+newtab-pocket-cta-text = Save the stories you love in { -pocket-brand-name }, and fuel your mind with fascinating reads.
+newtab-pocket-pocket-firefox-family = { -pocket-brand-name } is part of the { -brand-product-name } family
+# A save to Pocket button that shows over the card thumbnail on hover.
+newtab-pocket-save = Save
+newtab-pocket-saved = Saved
+
+## Pocket content onboarding experience dialog and modal for new users seeing the Pocket section for the first time, shown as the first item in the Pocket section.
+
+newtab-pocket-onboarding-discover = Discover the best of the web
+newtab-pocket-onboarding-cta = { -pocket-brand-name } explores a diverse range of publications to bring the most informative, inspirational, and trustworthy content right to your { -brand-product-name } browser.
+
+## Error Fallback Content.
+## This message and suggested action link are shown in each section of UI that fails to render.
+
+newtab-error-fallback-info = Oops, something went wrong loading this content.
+newtab-error-fallback-refresh-link = Refresh page to try again.
+
+## Customization Menu
+
+newtab-custom-shortcuts-title = Shortcuts
+newtab-custom-shortcuts-subtitle = Sites you save or visit
+newtab-custom-shortcuts-toggle =
+    .label = Shortcuts
+    .description = Sites you save or visit
+# Variables
+#   $num (number) - Number of rows to display
+newtab-custom-row-selector =
+    { $num ->
+        [one] { $num } row
+       *[other] { $num } rows
+    }
+newtab-custom-sponsored-sites = Sponsored shortcuts
+newtab-custom-pocket-title = Recommended by { -pocket-brand-name }
+newtab-custom-pocket-subtitle = Exceptional content curated by { -pocket-brand-name }, part of the { -brand-product-name } family
+newtab-custom-pocket-toggle =
+    .label = Recommended by { -pocket-brand-name }
+    .description = Exceptional content curated by { -pocket-brand-name }, part of the { -brand-product-name } family
+newtab-custom-pocket-sponsored = Sponsored stories
+newtab-custom-pocket-show-recent-saves = Show recent saves
+newtab-custom-recent-title = Recent activity
+newtab-custom-recent-subtitle = A selection of recent sites and content
+newtab-custom-recent-toggle =
+    .label = Recent activity
+    .description = A selection of recent sites and content
+newtab-custom-close-button = Close
+newtab-custom-settings = Manage more settings
diff --git a/l10n-en-GB/browser/browser/newtab/onboarding.ftl b/l10n-en-GB/browser/browser/newtab/onboarding.ftl
new file mode 100644
index 0000000000..ff957c56b4
--- /dev/null
+++ b/l10n-en-GB/browser/browser/newtab/onboarding.ftl
@@ -0,0 +1,346 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+### UI strings for the MR1 onboarding / multistage about:welcome
+### Various strings use a non-breaking space to avoid a single dangling /
+### widowed word, so test on various window sizes if you also want this.
+
+
+## Welcome page strings
+
+onboarding-welcome-header = Welcome to { -brand-short-name }
+onboarding-start-browsing-button-label = Start Browsing
+onboarding-not-now-button-label = Not now
+mr1-onboarding-get-started-primary-button-label = Get started
+
+## Custom Return To AMO onboarding strings
+
+return-to-amo-subtitle = Great, you’ve got { -brand-short-name }
+# <img data-l10n-name="icon"/> will be replaced with the icon belonging to the extension
+#
+# Variables:
+#   $addon-name (String) - Name of the add-on
+return-to-amo-addon-title = Now let’s get you <img data-l10n-name="icon"/> <b>{ $addon-name }</b>.
+return-to-amo-add-extension-label = Add the Extension
+return-to-amo-add-theme-label = Add the Theme
+
+##  Variables: $addon-name (String) - Name of the add-on to be installed
+
+mr1-return-to-amo-subtitle = Say hello to { -brand-short-name }
+mr1-return-to-amo-addon-title = You’ve got a fast, private browser at your fingertips. Now you can add <b>{ $addon-name }</b> and do even more with { -brand-short-name }.
+mr1-return-to-amo-add-extension-label = Add { $addon-name }
+
+## Multistage onboarding strings (about:welcome pages)
+
+
+# Aria-label to make the "steps" of multistage onboarding visible to screen readers.
+# Variables:
+#   $current (Int) - Number of the current page
+#   $total (Int) - Total number of pages
+
+onboarding-welcome-steps-indicator-label =
+    .aria-label = Progress: step { $current } of { $total }
+# This button will open system settings to turn on prefers-reduced-motion
+mr1-onboarding-reduce-motion-button-label = Turn off animations
+# String for the Firefox Accounts button
+mr1-onboarding-sign-in-button-label = Sign in
+# The primary import button label will depend on whether we can detect which browser was used to download Firefox.
+# Variables:
+#   $previous (Str) - Previous browser name, such as Edge, Chrome
+mr1-onboarding-import-primary-button-label-attribution = Import from { $previous }
+mr1-onboarding-theme-header = Make it your own
+mr1-onboarding-theme-subtitle = Personalise { -brand-short-name } with a theme.
+mr1-onboarding-theme-secondary-button-label = Not now
+# System theme uses operating system color settings
+mr1-onboarding-theme-label-system = System theme
+mr1-onboarding-theme-label-light = Light
+mr1-onboarding-theme-label-dark = Dark
+# "Alpenglow" here is the name of the theme, and should be kept in English.
+mr1-onboarding-theme-label-alpenglow = Alpenglow
+onboarding-theme-primary-button-label = Done
+
+## Please make sure to split the content of the title attribute into lines whose
+## width corresponds to about 40 Latin characters, to ensure that the tooltip
+## doesn't become too long. Line breaks will be preserved when displaying the
+## tooltip.
+
+# Tooltip displayed on hover of system theme
+mr1-onboarding-theme-tooltip-system =
+    .title =
+        Follow the operating system theme
+        for buttons, menus, and windows.
+# Input description for system theme
+mr1-onboarding-theme-description-system =
+    .aria-description =
+        Follow the operating system theme
+        for buttons, menus, and windows.
+# Tooltip displayed on hover of light theme
+mr1-onboarding-theme-tooltip-light =
+    .title =
+        Use a light theme for buttons,
+        menus, and windows.
+# Input description for light theme
+mr1-onboarding-theme-description-light =
+    .aria-description =
+        Use a light theme for buttons,
+        menus, and windows.
+# Tooltip displayed on hover of dark theme
+mr1-onboarding-theme-tooltip-dark =
+    .title =
+        Use a dark theme for buttons,
+        menus, and windows.
+# Input description for dark theme
+mr1-onboarding-theme-description-dark =
+    .aria-description =
+        Use a dark theme for buttons,
+        menus, and windows.
+# Tooltip displayed on hover of Alpenglow theme
+mr1-onboarding-theme-tooltip-alpenglow =
+    .title =
+        Use a dynamic, colourful theme for buttons,
+        menus, and windows.
+# Input description for Alpenglow theme
+mr1-onboarding-theme-description-alpenglow =
+    .aria-description =
+        Use a dynamic, colourful theme for buttons,
+        menus, and windows.
+# Selector description for default themes
+mr2-onboarding-default-theme-label = Explore default themes.
+
+## Strings for Thank You page
+
+mr2-onboarding-thank-you-header = Thank you for choosing us
+mr2-onboarding-thank-you-text = { -brand-short-name } is an independent browser backed by a non-profit. Together, we’re making the web safer, healthier and more private.
+mr2-onboarding-start-browsing-button-label = Start browsing
+
+## Multistage live language reloading onboarding strings (about:welcome pages)
+##
+## The following language names are generated by the browser's Intl.DisplayNames API.
+##
+## Variables:
+##   $negotiatedLanguage (String) - The name of the langpack's language, e.g. "Español (ES)"
+##   $systemLanguage (String) - The name of the system language, e.g "Español (ES)"
+##   $appLanguage (String) - The name of the language shipping in the browser build, e.g. "English (EN)"
+
+onboarding-live-language-header = Choose your language
+mr2022-onboarding-live-language-text = { -brand-short-name } speaks your language
+mr2022-language-mismatch-subtitle = Thanks to our community, { -brand-short-name } is translated in over 90 languages. It looks like your system is using { $systemLanguage }, and { -brand-short-name } is using { $appLanguage }.
+onboarding-live-language-button-label-downloading = Downloading the language pack for { $negotiatedLanguage }…
+onboarding-live-language-waiting-button = Getting available languages…
+onboarding-live-language-installing = Installing the language pack for { $negotiatedLanguage }…
+mr2022-onboarding-live-language-switch-to = Switch to { $negotiatedLanguage }
+mr2022-onboarding-live-language-continue-in = Continue in { $appLanguage }
+onboarding-live-language-secondary-cancel-download = Cancel
+onboarding-live-language-skip-button-label = Skip
+
+## Firefox 100 Thank You screens
+
+# "Hero Text" displayed on left side of welcome screen. This text can be
+# formatted to span multiple lines as needed. The <span data-l10n-name="zap">
+# </span> in this string allows a "zap" underline style to be automatically
+# added to the text inside it. "Yous" should stay inside the zap span, but
+# "Thank" can be put inside instead if there's no "you" in the translation.
+# The English text would normally be "100 Thank-Yous" i.e., plural noun, but for
+# aesthetics of splitting it across multiple lines, the hyphen is omitted.
+fx100-thank-you-hero-text =
+    100
+    Thank
+    <span data-l10n-name="zap">Yous</span>
+fx100-thank-you-subtitle = It’s our 100th release! Thanks for helping us build a better, healthier internet.
+fx100-thank-you-pin-primary-button-label =
+    { PLATFORM() ->
+        [macos] Keep { -brand-short-name } in Dock
+       *[other] Pin { -brand-short-name } to taskbar
+    }
+fx100-upgrade-thanks-header = 100 Thank-Yous
+# Message shown with a start-browsing button. Emphasis <em> should be for "you"
+# but "Thank" can be used instead if there's no "you" in the translation.
+fx100-upgrade-thank-you-body = It’s our 100th release of { -brand-short-name }. Thank <em>you</em> for helping us build a better, healthier internet.
+# Message shown with either a pin-to-taskbar or set-default button.
+fx100-upgrade-thanks-keep-body = It’s our 100th release! Thanks for being a part of our community. Keep { -brand-short-name } one click away for the next 100.
+mr2022-onboarding-secondary-skip-button-label = Skip this step
+
+## MR2022 New User Easy Setup screen strings
+
+# Primary button string used on new user onboarding first screen showing multiple actions such as Set Default, Import from previous browser.
+mr2022-onboarding-easy-setup-primary-button-label = Save and continue
+# Set Default action checkbox label used on new user onboarding first screen
+mr2022-onboarding-easy-setup-set-default-checkbox-label = Set { -brand-short-name } as default browser
+# Import action checkbox label used on new user onboarding first screen
+mr2022-onboarding-easy-setup-import-checkbox-label = Import from previous browser
+
+## MR2022 New User Pin Firefox screen strings
+
+# Title used on about:welcome for new users when Firefox is not pinned.
+# In this context, open up is synonymous with "Discover".
+# The metaphor is that when they open their Firefox browser, it helps them discover an amazing internet.
+# If this translation does not make sense in your language, feel free to use the word "discover."
+mr2022-onboarding-welcome-pin-header = Open up an amazing internet
+# Subtitle is used on onboarding page for new users page when Firefox is not pinned
+mr2022-onboarding-welcome-pin-subtitle = Launch { -brand-short-name } from anywhere with a single click. Every time you do, you’re choosing a more open and independent web.
+# Primary button string used on welcome page for when Firefox is not pinned.
+mr2022-onboarding-pin-primary-button-label =
+    { PLATFORM() ->
+        [macos] Keep { -brand-short-name } in Dock
+       *[other] Pin { -brand-short-name } to taskbar
+    }
+# Subtitle will be used when user already has Firefox pinned, but
+# has not set it as their default browser.
+# When translating "zip", please feel free to pick a verb that signifies movement and/or exploration
+# and makes sense in the context of navigating the web.
+mr2022-onboarding-set-default-only-subtitle = Start with a browser backed by a non-profit. We defend your privacy while you zip around the web.
+
+## MR2022 Existing User Pin Firefox Screen Strings
+
+# Title used on multistage onboarding page for existing users when Firefox is not pinned
+mr2022-onboarding-existing-pin-header = Thank you for loving { -brand-product-name }
+# Subtitle is used on onboarding page for existing users when Firefox is not pinned
+mr2022-onboarding-existing-pin-subtitle = Launch a healthier internet from anywhere with a single click. Our latest update is packed with new things we think you’ll adore.
+# Subtitle will be used on the welcome screen for existing users
+# when they already have Firefox pinned but not set as default
+mr2022-onboarding-existing-set-default-only-subtitle = Use a browser that defends your privacy while you zip around the web. Our latest update is packed with things that you adore.
+mr2022-onboarding-existing-pin-checkbox-label = Also add { -brand-short-name } private browsing
+
+## MR2022 New User Set Default screen strings
+
+# This string is the title used when the user already has pinned the browser, but has not set default.
+mr2022-onboarding-set-default-title = Make { -brand-short-name } your go-to browser
+mr2022-onboarding-set-default-primary-button-label = Set { -brand-short-name } as default browser
+# When translating "zip", please feel free to pick a verb that signifies movement and/or exploration
+# and makes sense in the context of navigating the web.
+mr2022-onboarding-set-default-subtitle = Use a browser backed by a non-profit. We defend your privacy while you zip around the web.
+
+## MR2022 Get Started screen strings.
+## These strings will be used on the welcome page
+## when Firefox is already set to default and pinned.
+
+# When translating "zip", please feel free to pick a verb that signifies movement and/or exploration
+# and makes sense in the context of navigating the web.
+mr2022-onboarding-get-started-primary-subtitle = Our latest version is built around you, making it easier than ever to zip around the web. It’s packed with features we think you’ll adore.
+mr2022-onboarding-get-started-primary-button-label = Set up in seconds
+
+## MR2022 Import Settings screen strings
+
+mr2022-onboarding-import-header = Lightning-fast setup
+mr2022-onboarding-import-subtitle = Set up { -brand-short-name } how you like it. Add your bookmarks, passwords, and more from your old browser.
+mr2022-onboarding-import-primary-button-label-no-attribution = Import from previous browser
+
+## If your language uses grammatical genders, in the description for the
+## colorway feel free to switch from "You are a X. You…" (e.g. "You are a
+## Playmaker. You create…") to "X: you…" ("Playmaker: You create…"). This might
+## help creating a more inclusive translation.
+
+mr2022-onboarding-colorway-title = Choose the colour that inspires you
+mr2022-onboarding-colorway-subtitle = Independent voices can change culture.
+mr2022-onboarding-colorway-primary-button-label-continue = Set and continue
+mr2022-onboarding-existing-colorway-checkbox-label = Make { -firefox-home-brand-name } your colourful homepage
+mr2022-onboarding-colorway-label-default = Default
+mr2022-onboarding-colorway-tooltip-default2 =
+    .title = Current { -brand-short-name } colours
+mr2022-onboarding-colorway-description-default = <b>Use my current { -brand-short-name } colours.</b>
+mr2022-onboarding-colorway-label-playmaker = Playmaker
+mr2022-onboarding-colorway-tooltip-playmaker2 =
+    .title = Playmaker (red)
+mr2022-onboarding-colorway-description-playmaker = <b>You are a Playmaker.</b> You create opportunities to win and help everyone around you elevate their game.
+mr2022-onboarding-colorway-label-expressionist = Expressionist
+mr2022-onboarding-colorway-tooltip-expressionist2 =
+    .title = Expressionist (yellow)
+mr2022-onboarding-colorway-description-expressionist = <b>You are an Expressionist.</b> You see the world differently and your creations stir the emotions of others.
+mr2022-onboarding-colorway-label-visionary = Visionary
+mr2022-onboarding-colorway-tooltip-visionary2 =
+    .title = Visionary (green)
+mr2022-onboarding-colorway-description-visionary = <b>You are a Visionary.</b> You question the status quo and move others to imagine a better future.
+mr2022-onboarding-colorway-label-activist = Activist
+mr2022-onboarding-colorway-tooltip-activist2 =
+    .title = Activist (blue)
+mr2022-onboarding-colorway-description-activist = <b>You are an Activist.</b> You leave the world a better place than you found it and lead others to believe.
+mr2022-onboarding-colorway-label-dreamer = Dreamer
+mr2022-onboarding-colorway-tooltip-dreamer2 =
+    .title = Dreamer (purple)
+mr2022-onboarding-colorway-description-dreamer = <b>You are a Dreamer.</b> You believe that fortune favors the bold and inspire others to be brave.
+mr2022-onboarding-colorway-label-innovator = Innovator
+mr2022-onboarding-colorway-tooltip-innovator2 =
+    .title = Innovator (orange)
+mr2022-onboarding-colorway-description-innovator = <b>You are an Innovator.</b> You see opportunities everywhere and make an impact on the lives of everyone around you.
+
+## MR2022 Multistage Mobile Download screen strings
+
+mr2022-onboarding-mobile-download-title = Hop from laptop to phone and back again
+mr2022-onboarding-mobile-download-subtitle = Grab tabs from one device and pick up where you left off on another. Plus synchronise your bookmarks and passwords anywhere you use { -brand-product-name }.
+mr2022-onboarding-mobile-download-cta-text = Scan the QR code to get { -brand-product-name } for mobile or <a data-l10n-name="download-label">send yourself a download link.</a>
+mr2022-onboarding-no-mobile-download-cta-text = Scan the QR code to get { -brand-product-name } for mobile.
+
+## MR2022 Upgrade Dialog screens
+## Pin private window screen shown only for users who don't have Firefox private pinned
+
+mr2022-upgrade-onboarding-pin-private-window-header = Get private browsing freedom in one click
+mr2022-upgrade-onboarding-pin-private-window-subtitle = No saved cookies or history, right from your desktop. Browse like no one’s watching.
+mr2022-upgrade-onboarding-pin-private-window-primary-button-label =
+    { PLATFORM() ->
+        [macos] Keep { -brand-short-name } private browsing in Dock
+       *[other] Pin { -brand-short-name } private browsing to taskbar
+    }
+
+## MR2022 Privacy Segmentation screen strings
+
+mr2022-onboarding-privacy-segmentation-title = We always respect your privacy
+mr2022-onboarding-privacy-segmentation-subtitle = From intelligent suggestions to smarter search, we’re constantly working to create a better, more personal { -brand-product-name }.
+mr2022-onboarding-privacy-segmentation-text-cta = What do you want to see when we offer new features that use your data to enhance your browsing?
+mr2022-onboarding-privacy-segmentation-button-primary-label = Use { -brand-product-name } recommendations
+mr2022-onboarding-privacy-segmentation-button-secondary-label = Show detailed information
+
+## MR2022 Multistage Gratitude screen strings
+
+mr2022-onboarding-gratitude-title = You’re helping us build a better web
+mr2022-onboarding-gratitude-subtitle = Thank you for using { -brand-short-name }, backed by the Mozilla Foundation. With your support, we’re working to make the internet more open, accessible, and better for everyone.
+mr2022-onboarding-gratitude-primary-button-label = See what’s new
+mr2022-onboarding-gratitude-secondary-button-label = Start browsing
+
+## Onboarding spotlight for infrequent users
+
+onboarding-infrequent-import-title = Make yourself at home
+onboarding-infrequent-import-subtitle = Whether you’re settling in or just stopping by, remember you can import your bookmarks, passwords, and more.
+onboarding-infrequent-import-primary-button = Import to { -brand-short-name }
+
+## MR2022 Illustration alt tags
+## Descriptive tags for illustrations used by screen readers and other assistive tech
+
+mr2022-onboarding-pin-image-alt =
+    .aria-label = Person working on a laptop surrounded by stars and flowers
+mr2022-onboarding-default-image-alt =
+    .aria-label = Person hugging the { -brand-product-name } logo
+mr2022-onboarding-import-image-alt =
+    .aria-label = Person riding a skateboard with a box of software icons
+mr2022-onboarding-mobile-download-image-alt =
+    .aria-label = Frogs hopping across lily pads with a QR code to download { -brand-product-name } for mobile in the centre
+mr2022-onboarding-pin-private-image-alt =
+    .aria-label = Magic wand makes { -brand-product-name } private browsing logo appear out of a hat
+mr2022-onboarding-privacy-segmentation-image-alt =
+    .aria-label = Light-skinned and dark-skinned hands high five
+mr2022-onboarding-gratitude-image-alt =
+    .aria-label = View of a sunset through a window with a fox and a house plant on a windowsill
+mr2022-onboarding-colorways-image-alt =
+    .aria-label = A hand spray paints a colourful collage of a green eye, orange shoe, red basketball, purple headphones, blue heart, and yellow crown
+
+## Device migration onboarding
+
+onboarding-device-migration-image-alt =
+    .aria-label = A fox on the screen of a laptop computer waving. The laptop has a mouse plugged into it.
+onboarding-device-migration-title = Welcome back!
+onboarding-device-migration-subtitle = Sign in to your { -fxaccount-brand-name(capitalization: "sentence") } to bring your bookmarks, passwords, and history with you on your new device.
+onboarding-device-migration-subtitle2 = Sign in to your account to bring your bookmarks, passwords, and history with you on your new device.
+onboarding-device-migration-primary-button-label = Sign in
+
+## The following screens have been updated to use security and privacy focused strings:
+
+# Easy setup screen
+onboarding-easy-setup-security-and-privacy-title = We love keeping you safe
+onboarding-easy-setup-security-and-privacy-subtitle = Our non-profit backed browser helps stop companies from secretly following you around the web.
+# Mobile download screen
+onboarding-mobile-download-security-and-privacy-title = Stay encrypted when you hop between devices
+onboarding-mobile-download-security-and-privacy-subtitle = When you’re synchronised, { -brand-short-name } encrypts your passwords, bookmarks, and more. Plus you can grab tabs from your other devices.
+# Gratitude screen
+onboarding-gratitude-security-and-privacy-title = { -brand-short-name } has your back
+onboarding-gratitude-security-and-privacy-subtitle = Thank you for using { -brand-short-name }, backed by the Mozilla Foundation. With your support, we’re working to make the internet safer and more accessible for everyone.
diff --git a/l10n-en-GB/browser/browser/originControls.ftl b/l10n-en-GB/browser/browser/originControls.ftl
new file mode 100644
index 0000000000..debdc21975
--- /dev/null
+++ b/l10n-en-GB/browser/browser/originControls.ftl
@@ -0,0 +1,64 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+## These strings appear in Origin Controls for Extensions.  Currently,
+## they are visible in the context menu for extension toolbar buttons,
+## and are used to inform the user how the extension can access their
+## data for the current website, and allow them to control it.
+
+origin-controls-no-access =
+    .label = Extension Can’t Read and Change Data
+origin-controls-quarantined =
+    .label = Extension Not Allowed to Read and Change Data
+origin-controls-quarantined-status =
+    .label = Extension Not Allowed on Restricted Sites
+origin-controls-quarantined-allow =
+    .label = Allow on Restricted Sites
+origin-controls-options =
+    .label = Extension Can Read and Change Data:
+origin-controls-option-all-domains =
+    .label = On All Sites
+origin-controls-option-when-clicked =
+    .label = Only When Clicked
+# This string denotes an option that grants the extension access to
+# the current site whenever they visit it.
+# Variables:
+#   $domain (String) - The domain for which the access is granted.
+origin-controls-option-always-on =
+    .label = Always Allow on { $domain }
+
+## These strings are used to map Origin Controls states to user-friendly
+## messages. They currently appear in the unified extensions panel.
+
+origin-controls-state-no-access = Can’t read and change data on this site
+origin-controls-state-quarantined = Not allowed by { -vendor-short-name } on this site
+origin-controls-state-always-on = Can always read and change data on this site
+origin-controls-state-when-clicked = Permission needed to read and change data
+origin-controls-state-hover-run-visit-only = Run for this visit only
+origin-controls-state-runnable-hover-open = Open extension
+origin-controls-state-runnable-hover-run = Run extension
+origin-controls-state-temporary-access = Can read and change data for this visit
+
+## Extension's toolbar button.
+## Variables:
+##   $extensionTitle (String) - Extension name or title message.
+
+origin-controls-toolbar-button =
+    .label = { $extensionTitle }
+    .tooltiptext = { $extensionTitle }
+# Extension's toolbar button when permission is needed.
+# Note that the new line is intentionally part of the tooltip.
+origin-controls-toolbar-button-permission-needed =
+    .label = { $extensionTitle }
+    .tooltiptext =
+        { $extensionTitle }
+        Permission needed
+# Extension's toolbar button when quarantined.
+# Note that the new line is intentionally part of the tooltip.
+origin-controls-toolbar-button-quarantined =
+    .label = { $extensionTitle }
+    .tooltiptext =
+        { $extensionTitle }
+        Not allowed by { -vendor-short-name } on this site
diff --git a/l10n-en-GB/browser/browser/pageInfo.ftl b/l10n-en-GB/browser/browser/pageInfo.ftl
new file mode 100644
index 0000000000..d852e2de6d
--- /dev/null
+++ b/l10n-en-GB/browser/browser/pageInfo.ftl
@@ -0,0 +1,264 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/. --
+
+page-info-window =
+    .style = width: 600px; min-height: 550px;
+
+copy =
+    .key = C
+menu-copy =
+    .label = Copy
+    .accesskey = C
+
+select-all =
+    .key = A
+menu-select-all =
+    .label = Select All
+    .accesskey = A
+
+close-dialog =
+    .key = w
+
+general-tab =
+    .label = General
+    .accesskey = G
+general-title =
+    .value = Title:
+general-url =
+    .value = Address:
+general-type =
+    .value = Type:
+general-mode =
+    .value = Render Mode:
+general-size =
+    .value = Size:
+general-referrer =
+    .value = Referring URL:
+general-modified =
+    .value = Modified:
+general-encoding =
+    .value = Text Encoding:
+general-meta-name =
+    .label = Name
+general-meta-content =
+    .label = Content
+
+media-tab =
+    .label = Media
+    .accesskey = M
+media-location =
+    .value = Location:
+media-text =
+    .value = Associated Text:
+media-alt-header =
+    .label = Alternate Text
+media-address =
+    .label = Address
+media-type =
+    .label = Type
+media-size =
+    .label = Size
+media-count =
+    .label = Count
+media-dimension =
+    .value = Dimensions:
+media-long-desc =
+    .value = Long Description:
+media-select-all =
+    .label = Select All
+    .accesskey = e
+media-save-as =
+    .label = Save As…
+    .accesskey = A
+media-save-image-as =
+    .label = Save As…
+    .accesskey = v
+
+perm-tab =
+    .label = Permissions
+    .accesskey = P
+permissions-for =
+    .value = Permissions for:
+
+security-tab =
+    .label = Security
+    .accesskey = S
+security-view =
+    .label = View Certificate
+    .accesskey = V
+security-view-unknown = Unknown
+    .value = Unknown
+security-view-identity =
+    .value = Web Site Identity
+security-view-identity-owner =
+    .value = Owner:
+security-view-identity-domain =
+    .value = Web site:
+security-view-identity-verifier =
+    .value = Verified by:
+security-view-identity-validity =
+    .value = Expires on:
+security-view-privacy =
+    .value = Privacy & History
+
+security-view-privacy-history-value = Have I visited this web site before today?
+security-view-privacy-sitedata-value = Is this web site storing information on my computer?
+
+security-view-privacy-clearsitedata =
+    .label = Clear Cookies and Site Data
+    .accesskey = C
+
+security-view-privacy-passwords-value = Have I saved any passwords for this web site?
+
+security-view-privacy-viewpasswords =
+    .label = View Saved Passwords
+    .accesskey = w
+security-view-technical =
+    .value = Technical Details
+
+help-button =
+    .label = Help
+
+## These strings are used to tell the user if the website is storing cookies
+## and data on the users computer in the security tab of pageInfo
+## Variables:
+##   $value (number) - Amount of data being stored
+##   $unit (string) - The unit of data being stored (Usually KB)
+
+security-site-data-cookies = Yes, cookies and { $value } { $unit } of site data
+security-site-data-only = Yes, { $value } { $unit } of site data
+
+security-site-data-cookies-only = Yes, cookies
+security-site-data-no = No
+
+##
+
+image-size-unknown = Unknown
+page-info-not-specified =
+    .value = Not specified
+not-set-alternative-text = Not specified
+not-set-date = Not specified
+media-img = Image
+media-bg-img = Background
+media-border-img = Border
+media-list-img = Bullet
+media-cursor = Cursor
+media-object = Object
+media-embed = Embed
+media-link = Icon
+media-input = Input
+media-video = Video
+media-audio = Audio
+saved-passwords-yes = Yes
+saved-passwords-no = No
+
+no-page-title =
+    .value = Untitled Page:
+general-quirks-mode =
+    .value = Quirks mode
+general-strict-mode =
+    .value = Standards compliance mode
+page-info-security-no-owner =
+    .value = This web site does not supply ownership information.
+media-select-folder = Select a Folder to Save the Images
+media-unknown-not-cached =
+    .value = Unknown (not cached)
+permissions-use-default =
+    .label = Use Default
+security-no-visits = No
+
+# This string is used to display the number of meta tags
+# in the General Tab
+# Variables:
+#   $tags (number) - The number of meta tags
+general-meta-tags =
+    .value =
+        { $tags ->
+            [one] Meta (1 tag)
+           *[other] Meta ({ $tags } tags)
+        }
+
+# This string is used to display the number of times
+# the user has visited the website prior
+# Variables:
+#   $visits (number) - The number of previous visits
+security-visits-number =
+    { $visits ->
+        [0] No
+        [one] Yes, once
+       *[other] Yes, { $visits } times
+    }
+
+# This string is used to display the size of a media file
+# Variables:
+#   $kb (number) - The size of an image in Kilobytes
+#   $bytes (number) - The size of an image in Bytes
+properties-general-size =
+    .value =
+        { $bytes ->
+            [one] { $kb } kB ({ $bytes } byte)
+           *[other] { $kb } kB ({ $bytes } bytes)
+        }
+
+# This string is used to display the type and number
+# of frames of a animated image
+# Variables:
+#   $type (string) - The type of a animated image
+#   $frames (number) - The number of frames in an animated image
+media-animated-image-type =
+    .value =
+        { $frames ->
+            [one] { $type } Image (animated, { $frames } frame)
+           *[other] { $type } Image (animated, { $frames } frames)
+        }
+
+# This string is used to display the type of
+# an image
+# Variables:
+#   $type (string) - The type of an image
+media-image-type =
+    .value = { $type } Image
+
+# This string is used to display the size of a scaled image
+# in both scaled and unscaled pixels
+# Variables:
+#   $dimx (number) - The horizontal size of an image
+#   $dimy (number) - The vertical size of an image
+#   $scaledx (number) - The scaled horizontal size of an image
+#   $scaledy (number) - The scaled vertical size of an image
+media-dimensions-scaled =
+    .value = { $dimx }px × { $dimy }px (scaled to { $scaledx }px × { $scaledy }px)
+
+# This string is used to display the size of an image in pixels
+# Variables:
+#   $dimx (number) - The horizontal size of an image
+#   $dimy (number) - The vertical size of an image
+media-dimensions =
+    .value = { $dimx }px × { $dimy }px
+
+# This string is used to display the size of a media
+# file in kilobytes
+# Variables:
+#   $size (number) - The size of the media file in kilobytes
+media-file-size = { $size } kB
+
+## Variables:
+##   $website (string) — The url of the website pageInfo is getting info for
+
+# This string is used to display the website name next to the
+# "Block Images" checkbox in the media tab
+# Variables:
+#   $website (string) - The website name
+media-block-image =
+    .label = Block Images from { $website }
+    .accesskey = B
+
+# This string is used to display the URL of the website on top of the
+# pageInfo dialog box
+# Variables:
+#   $website (string) — The url of the website pageInfo is getting info for
+page-info-page =
+    .title = Page Info — { $website }
+page-info-frame =
+    .title = Frame Info — { $website }
diff --git a/l10n-en-GB/browser/browser/panelUI.ftl b/l10n-en-GB/browser/browser/panelUI.ftl
new file mode 100644
index 0000000000..5b3b8c9bcc
--- /dev/null
+++ b/l10n-en-GB/browser/browser/panelUI.ftl
@@ -0,0 +1,25 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+## Customization Menu
+
+# The overflow menu is the menu that appears if you click the chevron (>> button) in the location bar.
+customize-menu-unpin-from-overflowmenu =
+    .label = Unpin from Overflow Menu
+    .accesskey = U
+customize-menu-add-to-toolbar =
+    .label = Add to Toolbar
+    .accesskey = A
+customize-menu-add-to-overflowmenu =
+    .label = Add to Overflow Menu
+    .accesskey = M
+
+## Forget Button
+
+# The forget button can be added to the toolbar or overflow menu via the cutomization menu.
+panic-button-thankyou-msg1 = Your recent history is cleared.
+panic-button-thankyou-msg2 = Safe browsing!
+panic-button-thankyou-button =
+    .label = Thanks!
diff --git a/l10n-en-GB/browser/browser/panicButton.ftl b/l10n-en-GB/browser/browser/panicButton.ftl
new file mode 100644
index 0000000000..e4b0f2ef20
--- /dev/null
+++ b/l10n-en-GB/browser/browser/panicButton.ftl
@@ -0,0 +1,31 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+panic-button-open-new-window = Open a new clean Window
+panic-button-undo-warning = This action cannot be undone.
+panic-button-forget-button =
+    .label = Forget!
+
+## These strings are combined to form a complete sentence starting with
+## panic-main-timeframe-desc. For example: "Forget the last: Five minutes".
+## Please ensure that this remains the case in the translation.
+
+panic-main-timeframe-desc = Forget the last:
+panic-button-5min =
+    .label = Five minutes
+panic-button-2hr =
+    .label = Two hours
+panic-button-day =
+    .label = 24 hours
+
+## These strings are combined to form a complete sentence starting with
+## panic-button-action-desc. For example: "Proceeding will: Delete Recent Cookies".
+## Please ensure that this remains the case in the translation.
+## Note also that some strings include <strong> tags for emphasis on the
+## words "Cookies", "History", "Tabs" and "Windows". The translation should do the same.
+
+panic-button-action-desc = Proceeding will:
+panic-button-delete-cookies = Delete Recent <strong>Cookies</strong>
+panic-button-delete-history = Delete Recent <strong>History</strong>
+panic-button-delete-tabs-and-windows = Close all <strong>Tabs</strong> and <strong>Windows</strong>
diff --git a/l10n-en-GB/browser/browser/places.ftl b/l10n-en-GB/browser/browser/places.ftl
new file mode 100644
index 0000000000..84e6c7d194
--- /dev/null
+++ b/l10n-en-GB/browser/browser/places.ftl
@@ -0,0 +1,268 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this file,
+# You can obtain one at http://mozilla.org/MPL/2.0/.
+
+places-open =
+    .label = Open
+    .accesskey = O
+places-open-in-tab =
+    .label = Open in New Tab
+    .accesskey = w
+places-open-in-container-tab =
+    .label = Open in New Container Tab
+    .accesskey = i
+places-open-all-bookmarks =
+    .label = Open All Bookmarks
+    .accesskey = O
+places-open-all-in-tabs =
+    .label = Open All in Tabs
+    .accesskey = O
+places-open-in-window =
+    .label = Open in New Window
+    .accesskey = N
+places-open-in-private-window =
+    .label = Open in New Private Window
+    .accesskey = P
+places-empty-bookmarks-folder =
+    .label = (Empty)
+places-add-bookmark =
+    .label = Add Bookmark…
+    .accesskey = B
+places-add-folder-contextmenu =
+    .label = Add Folder…
+    .accesskey = F
+places-add-folder =
+    .label = Add Folder…
+    .accesskey = o
+places-add-separator =
+    .label = Add Separator
+    .accesskey = S
+places-view =
+    .label = View
+    .accesskey = w
+places-by-date =
+    .label = By Date
+    .accesskey = D
+places-by-site =
+    .label = By Site
+    .accesskey = S
+places-by-most-visited =
+    .label = By Most Visited
+    .accesskey = V
+places-by-last-visited =
+    .label = By Last Visited
+    .accesskey = L
+places-by-day-and-site =
+    .label = By Date and Site
+    .accesskey = t
+places-history-search =
+    .placeholder = Search history
+places-history =
+    .aria-label = History
+places-bookmarks-search =
+    .placeholder = Search bookmarks
+places-delete-domain-data =
+    .label = Forget About This Site
+    .accesskey = F
+places-forget-domain-data =
+    .label = Forget About This Site…
+    .accesskey = F
+places-sortby-name =
+    .label = Sort By Name
+    .accesskey = r
+# places-edit-bookmark and places-edit-generic will show one or the other and can have the same access key.
+places-edit-bookmark =
+    .label = Edit Bookmark…
+    .accesskey = E
+places-edit-generic =
+    .label = Edit…
+    .accesskey = E
+places-edit-folder2 =
+    .label = Edit Folder…
+    .accesskey = E
+# Variables
+#   $count (number) - Number of folders to delete
+places-delete-folder =
+    .label =
+        { $count ->
+            [1] Delete Folder
+           *[other] Delete Folders
+        }
+    .accesskey = D
+# Variables:
+#   $count (number) - The number of pages selected for removal.
+places-delete-page =
+    .label =
+        { $count ->
+            [1] Delete Page
+           *[other] Delete Pages
+        }
+    .accesskey = D
+# Managed bookmarks are created by an administrator and cannot be changed by the user.
+managed-bookmarks =
+    .label = Managed bookmarks
+# This label is used when a managed bookmarks folder doesn't have a name.
+managed-bookmarks-subfolder =
+    .label = Subfolder
+# This label is used for the "Other Bookmarks" folder that appears in the bookmarks toolbar.
+other-bookmarks-folder =
+    .label = Other Bookmarks
+places-show-in-folder =
+    .label = Show in Folder
+    .accesskey = F
+# Variables:
+# $count (number) - The number of elements being selected for removal.
+places-delete-bookmark =
+    .label =
+        { $count ->
+            [1] Delete Bookmark
+           *[other] Delete Bookmarks
+        }
+    .accesskey = D
+# Variables:
+#   $count (number) - The number of bookmarks being added.
+places-create-bookmark =
+    .label =
+        { $count ->
+            [1] Bookmark Page…
+           *[other] Bookmark Pages…
+        }
+    .accesskey = B
+places-untag-bookmark =
+    .label = Remove Tag
+    .accesskey = R
+places-manage-bookmarks =
+    .label = Manage Bookmarks
+    .accesskey = M
+places-forget-about-this-site-confirmation-title = Forgetting about this site
+# Variables:
+# $hostOrBaseDomain (string) - The base domain (or host in case there is no base domain) for which data is being removed
+places-forget-about-this-site-confirmation-msg = This action will remove data related to { $hostOrBaseDomain } including history, cookies, cache and content preferences. Related bookmarks and passwords will not be removed. Are you sure you want to proceed?
+places-forget-about-this-site-forget = Forget
+places-library3 =
+    .title = Library
+places-organize-button =
+    .label = Organise
+    .tooltiptext = Organise your bookmarks
+    .accesskey = O
+places-organize-button-mac =
+    .label = Organise
+    .tooltiptext = Organise your bookmarks
+places-file-close =
+    .label = Close
+    .accesskey = C
+places-cmd-close =
+    .key = w
+places-view-button =
+    .label = Views
+    .tooltiptext = Change your view
+    .accesskey = V
+places-view-button-mac =
+    .label = Views
+    .tooltiptext = Change your view
+places-view-menu-columns =
+    .label = Show Columns
+    .accesskey = C
+places-view-menu-sort =
+    .label = Sort
+    .accesskey = S
+places-view-sort-unsorted =
+    .label = Unsorted
+    .accesskey = U
+places-view-sort-ascending =
+    .label = A > Z Sort Order
+    .accesskey = A
+places-view-sort-descending =
+    .label = Z > A Sort Order
+    .accesskey = Z
+places-maintenance-button =
+    .label = Import and Backup
+    .tooltiptext = Import and backup your bookmarks
+    .accesskey = I
+places-maintenance-button-mac =
+    .label = Import and Backup
+    .tooltiptext = Import and backup your bookmarks
+places-cmd-backup =
+    .label = Backup…
+    .accesskey = B
+places-cmd-restore =
+    .label = Restore
+    .accesskey = R
+places-cmd-restore-from-file =
+    .label = Choose File…
+    .accesskey = C
+places-import-bookmarks-from-html =
+    .label = Import Bookmarks from HTML…
+    .accesskey = I
+places-export-bookmarks-to-html =
+    .label = Export Bookmarks to HTML…
+    .accesskey = E
+places-import-other-browser =
+    .label = Import Data from Another Browser…
+    .accesskey = A
+places-view-sort-col-name =
+    .label = Name
+places-view-sort-col-tags =
+    .label = Tags
+places-view-sort-col-url =
+    .label = Location
+places-view-sort-col-most-recent-visit =
+    .label = Most Recent Visit
+places-view-sort-col-visit-count =
+    .label = Visit Count
+places-view-sort-col-date-added =
+    .label = Added
+places-view-sort-col-last-modified =
+    .label = Last Modified
+places-view-sortby-name =
+    .label = Sort by Name
+    .accesskey = N
+places-view-sortby-url =
+    .label = Sort by Location
+    .accesskey = L
+places-view-sortby-date =
+    .label = Sort by Most Recent Visit
+    .accesskey = V
+places-view-sortby-visit-count =
+    .label = Sort by Visit Count
+    .accesskey = C
+places-view-sortby-date-added =
+    .label = Sort by Added
+    .accesskey = e
+places-view-sortby-last-modified =
+    .label = Sort by Last Modified
+    .accesskey = M
+places-view-sortby-tags =
+    .label = Sort by Tags
+    .accesskey = T
+places-cmd-find-key =
+    .key = f
+places-back-button =
+    .tooltiptext = Go back
+places-forward-button =
+    .tooltiptext = Go forwards
+places-details-pane-select-an-item-description = Select an item to view and edit its properties
+places-details-pane-no-items =
+    .value = No items
+# Variables:
+#   $count (Number): number of items
+places-details-pane-items-count =
+    .value =
+        { $count ->
+            [one] One item
+           *[other] { $count } items
+        }
+
+## Strings used as a placeholder in the Library search field. For example,
+## "Search History" stands for "Search through the browser's history".
+
+places-search-bookmarks =
+    .placeholder = Search Bookmarks
+places-search-history =
+    .placeholder = Search History
+places-search-downloads =
+    .placeholder = Search Downloads
+
+##
+
+places-locked-prompt = The bookmarks and history system will not be functional because one of { -brand-short-name }’s files is in use by another application. Some security software can cause this problem.
diff --git a/l10n-en-GB/browser/browser/placesPrompts.ftl b/l10n-en-GB/browser/browser/placesPrompts.ftl
new file mode 100644
index 0000000000..b55f77c3c9
--- /dev/null
+++ b/l10n-en-GB/browser/browser/placesPrompts.ftl
@@ -0,0 +1,20 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+places-error-title = { -brand-short-name }
+places-no-title = (no title)
+
+# Do not translate `javascript:` and `data:`, they refer to the scheme used in URLs
+places-load-js-data-url-error = For security reasons, “javascript:” or “data:” URLs cannot be loaded from the history window or sidebar.
+
+places-bookmarks-backup-title = Bookmarks backup filename
+places-bookmarks-restore-alert-title = Revert Bookmarks
+places-bookmarks-restore-alert = This will replace all of your current bookmarks with the backup. Are you sure?
+places-bookmarks-restore-title = Select a bookmarks backup
+places-bookmarks-restore-filter-name = JSON
+places-bookmarks-restore-format-error = Unsupported file type.
+places-bookmarks-restore-parse-error = Unable to process the backup file.
+
+places-bookmarks-import = Import Bookmarks File
+places-bookmarks-export = Export Bookmarks File
diff --git a/l10n-en-GB/browser/browser/policies/policies-descriptions.ftl b/l10n-en-GB/browser/browser/policies/policies-descriptions.ftl
new file mode 100644
index 0000000000..f216942dd1
--- /dev/null
+++ b/l10n-en-GB/browser/browser/policies/policies-descriptions.ftl
@@ -0,0 +1,128 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+## The Enterprise Policies feature is aimed at system administrators
+## who want to deploy these settings across several Firefox installations
+## all at once. This is traditionally done through the Windows Group Policy
+## feature, but the system also supports other forms of deployment.
+## These are short descriptions for individual policies, to be displayed
+## in the documentation section in about:policies.
+
+policy-3rdparty = Set policies that WebExtensions can access via chrome.storage.managed.
+policy-AllowedDomainsForApps = Define domains allowed to access Google Workspace.
+policy-AppAutoUpdate = Enable or disable automatic application update.
+policy-AppUpdatePin = Prevent { -brand-short-name } from being updated beyond the specified version.
+policy-AppUpdateURL = Set custom app update URL.
+policy-Authentication = Configure integrated authentication for web sites that support it.
+policy-AutoLaunchProtocolsFromOrigins = Define a list of external protocols that can be used from listed origins without prompting the user.
+policy-BackgroundAppUpdate2 = Enable or disable the background updater.
+policy-BlockAboutAddons = Block access to the Add-ons Manager (about:addons).
+policy-BlockAboutConfig = Block access to the about:config page.
+policy-BlockAboutProfiles = Block access to the about:profiles page.
+policy-BlockAboutSupport = Block access to the about:support page.
+policy-Bookmarks = Create bookmarks in the Bookmarks toolbar, Bookmarks menu, or a specified folder inside them.
+policy-CaptivePortal = Enable or disable captive portal support.
+policy-CertificatesDescription = Add certificates or use built-in certificates.
+policy-Cookies = Allow or deny web sites to set cookies.
+# Containers in this context is referring to container tabs in Firefox.
+policy-Containers = Set policies related to containers.
+policy-DisableAccounts = Disable account-based services, including sync.
+policy-DisabledCiphers = Disable ciphers.
+policy-DefaultDownloadDirectory = Set the default download directory.
+policy-DisableAppUpdate = Prevent the browser from updating.
+policy-DisableBuiltinPDFViewer = Disable PDF.js, the built-in PDF viewer in { -brand-short-name }.
+policy-DisableDefaultBrowserAgent = Prevent the default browser agent from taking any actions. Only applicable to Windows; other platforms don’t have the agent.
+policy-DisableDeveloperTools = Block access to the developer tools.
+policy-DisableFeedbackCommands = Disable commands to send feedback from the Help menu (Submit Feedback and Report Deceptive Site).
+policy-DisableFirefoxAccounts = Disable { -fxaccount-brand-name } based services, including Sync.
+# Firefox Screenshots is the name of the feature, and should not be translated.
+policy-DisableFirefoxScreenshots = Disable the Firefox Screenshots feature.
+policy-DisableFirefoxStudies = Prevent { -brand-short-name } from running studies.
+policy-DisableForgetButton = Prevent access to the Forget button.
+policy-DisableFormHistory = Don’t remember search and form history.
+policy-DisablePrimaryPasswordCreation = If true, a Primary Password can’t be created.
+policy-DisablePasswordReveal = Do not allow passwords to be revealed in saved logins.
+policy-DisablePocket2 = Disable the feature to save web pages to { -pocket-brand-name }.
+policy-DisablePrivateBrowsing = Disable Private Browsing.
+policy-DisableProfileImport = Disable the menu command to Import data from another browser.
+policy-DisableProfileRefresh = Disable the Refresh { -brand-short-name } button in the about:support page.
+policy-DisableSafeMode = Disable the feature to restart in Safe Mode. Note: the Shift key to enter Safe Mode can only be disabled on Windows using Group Policy.
+policy-DisableSecurityBypass = Prevent the user from bypassing certain security warnings.
+policy-DisableSetAsDesktopBackground = Disable the menu command Set as Desktop Background for images.
+policy-DisableSystemAddonUpdate = Prevent the browser from installing and updating system add-ons.
+policy-DisableTelemetry = Turn off Telemetry.
+policy-DisableThirdPartyModuleBlocking = Prevent the user from blocking third-party modules that get injected into the { -brand-short-name } process.
+policy-DisplayBookmarksToolbar = Display the Bookmarks Toolbar by default.
+policy-DisplayMenuBar = Display the Menu Bar by default.
+policy-DNSOverHTTPS = Configure DNS over HTTPS.
+policy-DontCheckDefaultBrowser = Disable check for default browser on startup.
+policy-DownloadDirectory = Set and lock the download directory.
+# “lock” means that the user won’t be able to change this setting
+policy-EnableTrackingProtection = Enable or disable Content Blocking and optionally lock it.
+# “lock” means that the user won’t be able to change this setting
+policy-EncryptedMediaExtensions = Enable or disable Encrypted Media Extensions and optionally lock it.
+policy-ExemptDomainFileTypePairsFromFileTypeDownloadWarnings = Disable warnings based on file extension for specific file types on domains.
+# A “locked” extension can’t be disabled or removed by the user. This policy
+# takes 3 keys (“Install”, ”Uninstall”, ”Locked”), you can either keep them in
+# English or translate them as verbs.
+policy-Extensions = Install, uninstall or lock extensions. The Install option takes URLs or paths as parameters. The Uninstall and Locked options take extension IDs.
+policy-ExtensionSettings = Manage all aspects of extension installation.
+policy-ExtensionUpdate = Enable or disable automatic extension updates.
+policy-FirefoxHome2 = Configure { -firefox-home-brand-name }.
+policy-FirefoxSuggest = Configure { -firefox-suggest-brand-name }.
+policy-GoToIntranetSiteForSingleWordEntryInAddressBar = Force direct intranet site navigation instead of searching when typing single word entries in the address bar.
+policy-Handlers = Configure default application handlers.
+policy-HardwareAcceleration = If false, turn off hardware acceleration.
+# “lock” means that the user won’t be able to change this setting
+policy-Homepage = Set and optionally lock the homepage.
+policy-InstallAddonsPermission = Allow certain web sites to install add-ons.
+policy-LegacyProfiles = Disable the feature enforcing a separate profile for each installation.
+
+## Do not translate "SameSite", it's the name of a cookie attribute.
+
+policy-LegacySameSiteCookieBehaviorEnabled = Enable default legacy SameSite cookie behaviour setting.
+policy-LegacySameSiteCookieBehaviorEnabledForDomainList = Revert to legacy SameSite behaviour for cookies on specified sites.
+
+##
+
+policy-LocalFileLinks = Allow specific web sites to link to local files.
+policy-ManagedBookmarks = Configures a list of bookmarks managed by an administrator that cannot be changed by the user.
+policy-ManualAppUpdateOnly = Allow manual updates only and do not notify the user about updates.
+policy-PrimaryPassword = Require or prevent using a Primary Password.
+policy-PrintingEnabled = Enable or disable printing.
+policy-NetworkPrediction = Enable or disable network prediction (DNS prefetching).
+policy-NewTabPage = Enable or disable the New Tab page.
+policy-NoDefaultBookmarks = Disable creation of the default bookmarks bundled with { -brand-short-name }, and the Smart Bookmarks (Most Visited, Recent Tags). Note: this policy is only effective if used before the first run of the profile.
+policy-OfferToSaveLogins = Enforce the setting to allow { -brand-short-name } to offer to remember saved logins and passwords. Both true and false values are accepted.
+policy-OfferToSaveLoginsDefault = Set the default value for allowing { -brand-short-name } to offer to remember saved logins and passwords. Both true and false values are accepted.
+policy-OverrideFirstRunPage = Override the first run page. Set this policy to blank if you want to disable the first run page.
+policy-OverridePostUpdatePage = Override the post-update “What’s New” page. Set this policy to blank if you want to disable the post-update page.
+policy-PasswordManagerEnabled = Enable saving passwords to the password manager.
+policy-PasswordManagerExceptions = Prevent { -brand-short-name } from saving passwords for specific sites.
+# PDF.js and PDF should not be translated
+policy-PDFjs = Disable or configure PDF.js, the built-in PDF viewer in { -brand-short-name }.
+policy-Permissions2 = Configure permissions for camera, microphone, location, notifications, and autoplay.
+policy-PictureInPicture = Enable or disable Picture-in-Picture.
+policy-PopupBlocking = Allow certain web sites to display popups by default.
+policy-Preferences = Set and lock the value for a subset of preferences.
+policy-PromptForDownloadLocation = Ask where to save files when downloading.
+policy-Proxy = Configure proxy settings.
+policy-RequestedLocales = Set the list of requested locales for the application in order of preference.
+policy-SanitizeOnShutdown2 = Clear navigation data on shutdown.
+policy-SearchBar = Set the default location of the search bar. The user is still allowed to customise it.
+policy-SearchEngines = Configure search engine settings. This policy is only available on the Extended Support Release (ESR) version.
+policy-SearchSuggestEnabled = Enable or disable search suggestions.
+# For more information, see https://wikipedia.org/wiki/PKCS_11
+policy-SecurityDevices2 = Add or delete PKCS #11 modules.
+policy-ShowHomeButton = Show the home button on the toolbar.
+policy-SSLVersionMax = Set the maximum SSL version.
+policy-SSLVersionMin = Set the minimum SSL version.
+policy-StartDownloadsInTempDirectory = Force downloads to start off in a local, temporary location rather than the default download directory.
+policy-SupportMenu = Add a custom support menu item to the help menu.
+policy-UserMessaging = Don’t show certain messages to the user.
+policy-UseSystemPrintDialog = Print using the system print dialogue.
+# “format” refers to the format used for the value of this policy.
+policy-WebsiteFilter = Block web sites from being visited. See documentation for more details on the format.
+policy-Windows10SSO = Allow Windows single sign-on for Microsoft, work, and school accounts.
diff --git a/l10n-en-GB/browser/browser/preferences/addEngine.ftl b/l10n-en-GB/browser/browser/preferences/addEngine.ftl
new file mode 100644
index 0000000000..81a529bb25
--- /dev/null
+++ b/l10n-en-GB/browser/browser/preferences/addEngine.ftl
@@ -0,0 +1,22 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+add-engine-window2 =
+    .title = Add Search Engine
+    .style = min-width: 32em;
+
+add-engine-button = Add Custom Engine
+
+add-engine-name = Search engine name
+
+add-engine-alias = Alias
+
+add-engine-url = Engine URL, use %s in place of the search term
+
+add-engine-dialog =
+    .buttonlabelaccept = Add Engine
+    .buttonaccesskeyaccept = A
+
+engine-name-exists = An engine with that name already exists
+engine-alias-exists = An engine with that alias already exists
diff --git a/l10n-en-GB/browser/browser/preferences/applicationManager.ftl b/l10n-en-GB/browser/browser/preferences/applicationManager.ftl
new file mode 100644
index 0000000000..f0ee804d0c
--- /dev/null
+++ b/l10n-en-GB/browser/browser/preferences/applicationManager.ftl
@@ -0,0 +1,25 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+app-manager-window2 =
+    .title = Application details
+    .style = min-width: 30em; min-height: 20em;
+
+app-manager-remove =
+    .label = Remove
+    .accesskey = R
+
+# Variables:
+#   $type (String) - the URI scheme of the link (e.g. mailto:)
+app-manager-handle-protocol = The following applications can be used to handle { $type } links.
+
+# Variables:
+#   $type (String) - the MIME type (e.g. application/binary)
+app-manager-handle-file = The following applications can be used to handle { $type } content.
+
+## These strings are followed, on a new line,
+## by the URL or path of the application.
+
+app-manager-web-app-info = This web application is hosted at:
+app-manager-local-app-info = This application is located at:
diff --git a/l10n-en-GB/browser/browser/preferences/blocklists.ftl b/l10n-en-GB/browser/browser/preferences/blocklists.ftl
new file mode 100644
index 0000000000..3a6b3bcb99
--- /dev/null
+++ b/l10n-en-GB/browser/browser/preferences/blocklists.ftl
@@ -0,0 +1,33 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+blocklist-window2 =
+    .title = Block Lists
+    .style = min-width: 55em
+
+blocklist-description = Choose the list { -brand-short-name } uses to block online trackers. Lists provided by <a data-l10n-name="disconnect-link" title="Disconnect">Disconnect</a>.
+blocklist-close-key =
+    .key = w
+
+blocklist-treehead-list =
+    .label = List
+
+blocklist-dialog =
+    .buttonlabelaccept = Save Changes
+    .buttonaccesskeyaccept = S
+
+
+# This template constructs the name of the block list in the block lists dialog.
+# It combines the list name and description.
+# e.g. "Standard (Recommended). This list does a pretty good job."
+#
+# Variables:
+#   $listName {string, "Standard (Recommended)."} - List name.
+#   $description {string, "This list does a pretty good job."} - Description of the list.
+blocklist-item-list-template = { $listName } { $description }
+
+blocklist-item-moz-std-listName = Level 1 block list (Recommended).
+blocklist-item-moz-std-description = Allows some trackers so fewer web sites break.
+blocklist-item-moz-full-listName = Level 2 block list.
+blocklist-item-moz-full-description = Blocks all detected trackers. Some web sites or content may not load properly.
diff --git a/l10n-en-GB/browser/browser/preferences/clearSiteData.ftl b/l10n-en-GB/browser/browser/preferences/clearSiteData.ftl
new file mode 100644
index 0000000000..0d3e524de8
--- /dev/null
+++ b/l10n-en-GB/browser/browser/preferences/clearSiteData.ftl
@@ -0,0 +1,56 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+clear-site-data-window2 =
+    .title = Clear Data
+    .style = min-width: 35em
+
+clear-site-data-description = Clearing all cookies and site data stored by { -brand-short-name } may sign you out of web sites and remove offline web content. Clearing cache data will not affect your logins.
+
+clear-site-data-close-key =
+    .key = w
+
+# The parameters in parentheses in this string describe disk usage
+# in the format ($amount $unit), e.g. "Cookies and Site Data (24 KB)"
+# Variables:
+#   $amount (Number) - Amount of site data currently stored on disk
+#   $unit (String) - Abbreviation of the unit that $amount is in, e.g. "MB"
+clear-site-data-cookies-with-data =
+    .label = Cookies and Site Data ({ $amount } { $unit })
+    .accesskey = S
+
+# This string is a placeholder for while the data used to fill
+# clear-site-data-cookies-with-data is loading. This placeholder is usually
+# only shown for a very short time (< 1s), so it should be very similar
+# or the same as clear-site-data-cookies-with-data (except the amount and unit),
+# to avoid flickering.
+clear-site-data-cookies-empty =
+    .label = Cookies and Site Data
+    .accesskey = S
+
+clear-site-data-cookies-info = You may get signed out of web sites if cleared
+
+# The parameters in parentheses in this string describe disk usage
+# in the format ($amount $unit), e.g. "Cached Web Content (24 KB)"
+# Variables:
+#   $amount (Number) - Amount of cache currently stored on disk
+#   $unit (String) - Abbreviation of the unit that $amount is in, e.g. "MB"
+clear-site-data-cache-with-data =
+    .label = Cached Web Content ({ $amount } { $unit })
+    .accesskey = W
+
+# This string is a placeholder for while the data used to fill
+# clear-site-data-cache-with-data is loading. This placeholder is usually
+# only shown for a very short time (< 1s), so it should be very similar
+# or the same as clear-site-data-cache-with-data (except the amount and unit),
+# to avoid flickering.
+clear-site-data-cache-empty =
+    .label = Cached Web Content
+    .accesskey = W
+
+clear-site-data-cache-info = Will require web sites to reload images and data
+
+clear-site-data-dialog =
+    .buttonlabelaccept = Clear
+    .buttonaccesskeyaccept = l
diff --git a/l10n-en-GB/browser/browser/preferences/colors.ftl b/l10n-en-GB/browser/browser/preferences/colors.ftl
new file mode 100644
index 0000000000..25cdf482b9
--- /dev/null
+++ b/l10n-en-GB/browser/browser/preferences/colors.ftl
@@ -0,0 +1,44 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+colors-dialog2 =
+    .title = Colours
+    .style = min-width: 41em;
+
+colors-close-key =
+    .key = w
+
+colors-page-override = Override the colours specified by the page with your selections above
+    .accesskey = O
+
+colors-page-override-option-always =
+    .label = Always
+colors-page-override-option-auto =
+    .label = Only with High Contrast themes
+colors-page-override-option-never =
+    .label = Never
+
+colors-text-and-background = Text and Background
+
+colors-text-header = Text
+    .accesskey = T
+
+colors-background = Background
+    .accesskey = B
+
+colors-use-system =
+    .label = Use system colours
+    .accesskey = s
+
+colors-underline-links =
+    .label = Underline links
+    .accesskey = U
+
+colors-links-header = Link Colours
+
+colors-unvisited-links = Unvisited Links
+    .accesskey = L
+
+colors-visited-links = Visited Links
+    .accesskey = V
diff --git a/l10n-en-GB/browser/browser/preferences/connection.ftl b/l10n-en-GB/browser/browser/preferences/connection.ftl
new file mode 100644
index 0000000000..e71c2bb2bb
--- /dev/null
+++ b/l10n-en-GB/browser/browser/preferences/connection.ftl
@@ -0,0 +1,99 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+connection-window2 =
+    .title = Connection Settings
+    .style =
+        { PLATFORM() ->
+            [macos] min-width: 44em
+           *[other] min-width: 49em
+        }
+
+connection-close-key =
+    .key = w
+
+connection-disable-extension =
+    .label = Disable Extension
+
+connection-proxy-configure = Configure Proxy Access to the Internet
+
+connection-proxy-option-no =
+    .label = No proxy
+    .accesskey = y
+connection-proxy-option-system =
+    .label = Use system proxy settings
+    .accesskey = U
+connection-proxy-option-auto =
+    .label = Auto-detect proxy settings for this network
+    .accesskey = w
+connection-proxy-option-manual =
+    .label = Manual proxy configuration
+    .accesskey = M
+
+connection-proxy-http = HTTP Proxy
+    .accesskey = x
+connection-proxy-http-port = Port
+    .accesskey = P
+connection-proxy-https-sharing =
+    .label = Also use this proxy for HTTPS
+    .accesskey = s
+
+connection-proxy-https = HTTPS Proxy
+    .accesskey = H
+connection-proxy-ssl-port = Port
+    .accesskey = o
+
+connection-proxy-socks = SOCKS Host
+    .accesskey = C
+connection-proxy-socks-port = Port
+    .accesskey = t
+
+connection-proxy-socks4 =
+    .label = SOCKS v4
+    .accesskey = K
+connection-proxy-socks5 =
+    .label = SOCKS v5
+    .accesskey = v
+connection-proxy-noproxy = No proxy for
+    .accesskey = N
+
+connection-proxy-noproxy-desc = Example: .mozilla.org, .net.nz, 192.168.1.0/24
+
+# Do not translate "localhost", "127.0.0.1/8" and "::1". (You can translate "and".)
+connection-proxy-noproxy-localhost-desc-2 = Connections to localhost, 127.0.0.1/8, and ::1 are never proxied.
+
+connection-proxy-autotype =
+    .label = Automatic proxy configuration URL
+    .accesskey = A
+
+connection-proxy-reload =
+    .label = Reload
+    .accesskey = e
+
+connection-proxy-autologin =
+    .label = Do not prompt for authentication if password is saved
+    .accesskey = i
+    .tooltip = This option silently authenticates you to proxies when you have saved credentials for them. You will be prompted if authentication fails.
+
+connection-proxy-autologin-checkbox =
+    .label = Do not prompt for authentication if password is saved
+    .accesskey = i
+    .tooltiptext = This option silently authenticates you to proxies when you have saved credentials for them. You will be prompted if authentication fails.
+
+connection-proxy-socks-remote-dns =
+    .label = Proxy DNS when using SOCKS v5
+    .accesskey = D
+
+# Variables:
+#   $name (String) - Display name or URL for the DNS over HTTPS provider
+connection-dns-over-https-url-item-default =
+    .label = { $name } (Default)
+    .tooltiptext = Use the default URL for resolving DNS over HTTPS
+
+connection-dns-over-https-url-custom =
+    .label = Custom
+    .accesskey = C
+    .tooltiptext = Enter your preferred URL for resolving DNS over HTTPS
+
+connection-dns-over-https-custom-label = Custom
diff --git a/l10n-en-GB/browser/browser/preferences/containers.ftl b/l10n-en-GB/browser/browser/preferences/containers.ftl
new file mode 100644
index 0000000000..96c2f393c4
--- /dev/null
+++ b/l10n-en-GB/browser/browser/preferences/containers.ftl
@@ -0,0 +1,93 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+containers-window-new2 =
+    .title = Add New Container
+    .style = min-width: 45em
+# Variables
+#   $name (String) - Name of the container
+containers-window-update-settings2 =
+    .title = { $name } Container Settings
+    .style = min-width: 45em
+
+containers-window-close =
+    .key = w
+
+# This is a term to store style to be applied
+# on the three labels in the containers add/edit dialog:
+#   - name
+#   - icon
+#   - color
+#
+# Using this term and referencing it in the `.style` attribute
+# of the three messages ensures that all three labels
+# will be aligned correctly.
+-containers-labels-style = min-width: 4rem
+
+containers-name-label = Name
+    .accesskey = N
+    .style = { -containers-labels-style }
+
+containers-name-text =
+    .placeholder = Enter a container name
+
+containers-icon-label = Icon
+    .accesskey = I
+    .style = { -containers-labels-style }
+
+containers-color-label = Colour
+    .accesskey = o
+    .style = { -containers-labels-style }
+
+containers-dialog =
+    .buttonlabelaccept = Done
+    .buttonaccesskeyaccept = D
+
+containers-color-blue =
+    .label = Blue
+containers-color-turquoise =
+    .label = Turquoise
+containers-color-green =
+    .label = Green
+containers-color-yellow =
+    .label = Yellow
+containers-color-orange =
+    .label = Orange
+containers-color-red =
+    .label = Red
+containers-color-pink =
+    .label = Pink
+containers-color-purple =
+    .label = Purple
+containers-color-toolbar =
+    .label = Match toolbar
+
+containers-icon-fence =
+    .label = Fence
+containers-icon-fingerprint =
+    .label = Fingerprint
+containers-icon-briefcase =
+    .label = Briefcase
+# String represents a money sign but currently uses a dollar sign
+# so don't change to local currency. See Bug 1291672.
+containers-icon-dollar =
+    .label = Dollar sign
+containers-icon-cart =
+    .label = Shopping basket
+containers-icon-circle =
+    .label = Dot
+containers-icon-vacation =
+    .label = Holiday
+containers-icon-gift =
+    .label = Gift
+containers-icon-food =
+    .label = Food
+containers-icon-fruit =
+    .label = Fruit
+containers-icon-pet =
+    .label = Pet
+containers-icon-tree =
+    .label = Tree
+containers-icon-chill =
+    .label = Chill
diff --git a/l10n-en-GB/browser/browser/preferences/fonts.ftl b/l10n-en-GB/browser/browser/preferences/fonts.ftl
new file mode 100644
index 0000000000..08744d2178
--- /dev/null
+++ b/l10n-en-GB/browser/browser/preferences/fonts.ftl
@@ -0,0 +1,121 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+fonts-window =
+    .title = Fonts
+
+fonts-window-close =
+    .key = w
+
+## Font groups by language
+
+fonts-langgroup-header = Fonts for
+    .accesskey = F
+
+fonts-langgroup-arabic =
+    .label = Arabic
+fonts-langgroup-armenian =
+    .label = Armenian
+fonts-langgroup-bengali =
+    .label = Bengali
+fonts-langgroup-simpl-chinese =
+    .label = Simplified Chinese
+fonts-langgroup-trad-chinese-hk =
+    .label = Traditional Chinese (Hong Kong)
+fonts-langgroup-trad-chinese =
+    .label = Traditional Chinese (Taiwan)
+fonts-langgroup-cyrillic =
+    .label = Cyrillic
+fonts-langgroup-devanagari =
+    .label = Devanagari
+fonts-langgroup-ethiopic =
+    .label = Ethiopic
+fonts-langgroup-georgian =
+    .label = Georgian
+fonts-langgroup-el =
+    .label = Greek
+fonts-langgroup-gujarati =
+    .label = Gujarati
+fonts-langgroup-gurmukhi =
+    .label = Gurmukhi
+fonts-langgroup-japanese =
+    .label = Japanese
+fonts-langgroup-hebrew =
+    .label = Hebrew
+fonts-langgroup-kannada =
+    .label = Kannada
+fonts-langgroup-khmer =
+    .label = Khmer
+fonts-langgroup-korean =
+    .label = Korean
+# Translate "Latin" as the name of Latin (Roman) script, not as the name of the Latin language.
+fonts-langgroup-latin =
+    .label = Latin
+fonts-langgroup-malayalam =
+    .label = Malayalam
+fonts-langgroup-math =
+    .label = Mathematics
+fonts-langgroup-odia =
+    .label = Odia
+fonts-langgroup-sinhala =
+    .label = Sinhala
+fonts-langgroup-tamil =
+    .label = Tamil
+fonts-langgroup-telugu =
+    .label = Telugu
+fonts-langgroup-thai =
+    .label = Thai
+fonts-langgroup-tibetan =
+    .label = Tibetan
+fonts-langgroup-canadian =
+    .label = Unified Canadian Syllabary
+fonts-langgroup-other =
+    .label = Other Writing Systems
+
+## Default fonts and their sizes
+
+fonts-proportional-header = Proportional
+    .accesskey = P
+
+fonts-default-serif =
+    .label = Serif
+fonts-default-sans-serif =
+    .label = Sans Serif
+
+fonts-proportional-size = Size
+    .accesskey = z
+
+fonts-serif = Serif
+    .accesskey = S
+
+fonts-sans-serif = Sans Serif
+    .accesskey = n
+
+fonts-monospace = Monospace
+    .accesskey = M
+
+fonts-monospace-size = Size
+    .accesskey = e
+
+fonts-minsize = Minimum font size
+    .accesskey = o
+
+fonts-minsize-none =
+    .label = None
+
+fonts-allow-own =
+    .label = Allow pages to choose their own fonts, instead of your selections above
+    .accesskey = A
+
+## Text Encodings
+##
+## Translate the encoding names as adjectives for an encoding, not as the name
+## of the language.
+
+# Variables:
+#   $name {string, "Arial"} - Name of the default font
+fonts-label-default =
+    .label = Default ({ $name })
+fonts-label-default-unnamed =
+    .label = Default
diff --git a/l10n-en-GB/browser/browser/preferences/formAutofill.ftl b/l10n-en-GB/browser/browser/preferences/formAutofill.ftl
new file mode 100644
index 0000000000..c83836163d
--- /dev/null
+++ b/l10n-en-GB/browser/browser/preferences/formAutofill.ftl
@@ -0,0 +1,156 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+## The address and credit card autofill management dialog in browser preferences
+
+autofill-manage-addresses-title = Saved addresses
+autofill-manage-addresses-list-header = Addresses
+autofill-manage-credit-cards-title = Saved Credit Cards
+autofill-manage-credit-cards-list-header = Credit Cards
+autofill-manage-payment-methods-title = Saved payment methods
+autofill-manage-cards-list-header = Cards
+autofill-manage-dialog =
+    .style = min-width: 560px
+autofill-manage-remove-button = Remove
+autofill-manage-add-button = Add…
+autofill-manage-edit-button = Edit…
+
+## The address capture doorhanger
+
+address-capture-save-doorhanger-header = Save address?
+address-capture-save-doorhanger-description = Save info to { -brand-short-name } so you can fill out forms quickly.
+address-capture-update-doorhanger-header = Update address?
+address-capture-edit-doorhanger-header = Edit address
+address-capture-save-button =
+    .label = Save
+    .accessKey = S
+address-capture-not-now-button =
+    .label = Not now
+    .accessKey = N
+address-capture-cancel-button =
+    .label = Cancel
+    .accessKey = C
+address-capture-update-button =
+    .label = Update
+    .accessKey = U
+address-capture-manage-address-button =
+    .label = Address settings
+address-capture-learn-more-button =
+    .label = Learn more
+# The dialog title for creating addresses in browser preferences.
+autofill-add-new-address-title = Add New Address
+address-capture-open-menu-button =
+    .aria-label = Open menu
+address-capture-edit-address-button =
+    .aria-label = Edit address
+# The dialog title for creating addresses in browser preferences.
+autofill-add-address-title = Add address
+# The dialog title for editing addresses in browser preferences.
+autofill-edit-address-title = Edit address
+autofill-address-name = Name
+autofill-address-given-name = First Name
+autofill-address-additional-name = Middle Name
+autofill-address-family-name = Last Name
+autofill-address-organization = Organisation
+autofill-address-street-address = Street Address
+autofill-address-street = Street Address
+
+## address-level-3 (Sublocality) names
+
+# Used in IR, MX
+autofill-address-neighborhood = Neighbourhood
+# Used in MY
+autofill-address-village-township = Village or Township
+autofill-address-island = Island
+# Used in IE
+autofill-address-townland = Townland
+
+## address-level-2 names
+
+autofill-address-city = City
+# Used in HK, SD, SY, TR as Address Level-2 and used in KR as Sublocality.
+autofill-address-district = District
+# Used in GB, NO, SE
+autofill-address-post-town = Post town
+# Used in AU as Address Level-2 and used in ZZ as Sublocality.
+autofill-address-suburb = Suburb
+
+## address-level-1 names
+
+autofill-address-province = Province
+autofill-address-state = State
+autofill-address-county = County
+# Used in BB, JM
+autofill-address-parish = Parish
+# Used in JP
+autofill-address-prefecture = Prefecture
+# Used in HK
+autofill-address-area = Area
+# Used in KR
+autofill-address-do-si = Do/Si
+# Used in NI, CO
+autofill-address-department = Department
+# Used in AE
+autofill-address-emirate = Emirate
+# Used in RU and UA
+autofill-address-oblast = Oblast
+
+## Postal code name types
+
+# Used in IN
+autofill-address-pin = Pin
+autofill-address-postal-code = Post Code
+autofill-address-zip = Zip Code
+# Used in IE
+autofill-address-eircode = Eircode
+
+##
+
+
+##
+
+autofill-address-country = Country or Region
+autofill-address-country-only = Country
+autofill-address-tel = Phone
+autofill-address-email = Email
+autofill-cancel-button = Cancel
+autofill-save-button = Save
+autofill-country-warning-message = Form Autofill is currently available only for certain countries.
+# The dialog title for creating credit cards in browser preferences.
+autofill-add-new-card-title = Add New Credit Card
+# The dialog title for editing credit cards in browser preferences.
+autofill-edit-card-title = Edit Credit Card
+autofill-message-tooltip = View message about autofill
+# The dialog title for creating credit cards in browser preferences.
+autofill-add-card-title = Add card
+# The dialog title for editing credit cards in browser preferences.
+autofill-edit-card-title2 = Edit card
+# In macOS, this string is preceded by the operating system with "Firefox is trying to ",
+# and has a period added to its end. Make sure to test in your locale.
+autofill-edit-card-password-prompt =
+    { PLATFORM() ->
+        [macos] show credit card information
+        [windows] { -brand-short-name } is trying to show credit card information. Confirm access to this Windows account below.
+       *[other] { -brand-short-name } is trying to show credit card information.
+    }
+autofill-card-number = Card Number
+autofill-card-invalid-number = Please enter a valid card number
+autofill-card-name-on-card = Name on Card
+autofill-card-expires-month = Exp. Month
+autofill-card-expires-year = Exp. Year
+autofill-card-billing-address = Billing Address
+autofill-card-network = Card Type
+
+## These are brand names and should only be translated when a locale-specific name for that brand is in common use
+
+autofill-card-network-amex = American Express
+autofill-card-network-cartebancaire = Carte Bancaire
+autofill-card-network-diners = Diners Club
+autofill-card-network-discover = Discover
+autofill-card-network-jcb = JCB
+autofill-card-network-mastercard = MasterCard
+autofill-card-network-mir = MIR
+autofill-card-network-unionpay = Union Pay
+autofill-card-network-visa = Visa
diff --git a/l10n-en-GB/browser/browser/preferences/fxaPairDevice.ftl b/l10n-en-GB/browser/browser/preferences/fxaPairDevice.ftl
new file mode 100644
index 0000000000..64c280ca6e
--- /dev/null
+++ b/l10n-en-GB/browser/browser/preferences/fxaPairDevice.ftl
@@ -0,0 +1,17 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+fxa-pair-device-dialog-sync2 =
+    .style = min-width: 32em;
+
+fxa-qrcode-pair-title = Synchronise { -brand-product-name } on your phone or tablet
+fxa-qrcode-pair-step1 = 1. Open { -brand-product-name } on your mobile device.
+
+fxa-qrcode-pair-step2-signin = 2. Go to the menu (<img data-l10n-name="ios-menu-icon"/> on iOS or <img data-l10n-name="android-menu-icon"/> on Android) and tap <strong>Synchronise and save data</strong>
+
+fxa-qrcode-pair-step3 = 3. Tap <strong>Ready to Scan</strong> and hold your phone over this code
+
+fxa-qrcode-error-title = Pairing unsuccessful.
+
+fxa-qrcode-error-body = Try again.
diff --git a/l10n-en-GB/browser/browser/preferences/languages.ftl b/l10n-en-GB/browser/browser/preferences/languages.ftl
new file mode 100644
index 0000000000..276bffea81
--- /dev/null
+++ b/l10n-en-GB/browser/browser/preferences/languages.ftl
@@ -0,0 +1,73 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+webpage-languages-window2 =
+    .title = Web Page Language Settings
+    .style = min-width: 40em
+
+languages-close-key =
+    .key = w
+
+languages-description = Web pages are sometimes offered in more than one language. Choose languages for displaying these web pages, in order of preference
+
+languages-customize-spoof-english =
+    .label = Request English versions of web pages for enhanced privacy
+
+languages-customize-moveup =
+    .label = Move Up
+    .accesskey = U
+
+languages-customize-movedown =
+    .label = Move Down
+    .accesskey = D
+
+languages-customize-remove =
+    .label = Remove
+    .accesskey = R
+
+languages-customize-select-language =
+    .placeholder = Select a language to add…
+
+languages-customize-add =
+    .label = Add
+    .accesskey = A
+
+# The pattern used to generate strings presented to the user in the
+# locale selection list.
+#
+# Example:
+#   Icelandic [is]
+#   Spanish (Chile) [es-CL]
+#
+# Variables:
+#   $locale (String) - A name of the locale (for example: "Icelandic", "Spanish (Chile)")
+#   $code (String) - Locale code of the locale (for example: "is", "es-CL")
+languages-code-format =
+    .label = { $locale }  [{ $code }]
+
+languages-active-code-format =
+    .value = { languages-code-format.label }
+
+browser-languages-window2 =
+    .title = { -brand-short-name } Language Settings
+    .style = min-width: 40em
+
+browser-languages-description = { -brand-short-name } will display the first language as your default and will display alternate languages if necessary in the order they appear.
+
+browser-languages-search = Search for more languages…
+
+browser-languages-searching =
+    .label = Searching for languages…
+
+browser-languages-downloading =
+    .label = Downloading…
+
+browser-languages-select-language =
+    .label = Select a language to add…
+    .placeholder = Select a language to add…
+
+browser-languages-installed-label = Installed languages
+browser-languages-available-label = Available languages
+
+browser-languages-error = { -brand-short-name } can’t update your languages right now. Check that you are connected to the internet or try again.
diff --git a/l10n-en-GB/browser/browser/preferences/moreFromMozilla.ftl b/l10n-en-GB/browser/browser/preferences/moreFromMozilla.ftl
new file mode 100644
index 0000000000..0ca6384874
--- /dev/null
+++ b/l10n-en-GB/browser/browser/preferences/moreFromMozilla.ftl
@@ -0,0 +1,33 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+## These strings are used in the about:preferences moreFromMozilla page
+
+more-from-moz-title = More from { -vendor-short-name }
+more-from-moz-category =
+    .tooltiptext = More from { -vendor-short-name }
+
+more-from-moz-subtitle = Check out other { -vendor-short-name } products that work to support a healthy internet.
+
+more-from-moz-firefox-mobile-title = { -brand-product-name } Mobile
+more-from-moz-firefox-mobile-description = The mobile browser that puts your privacy first.
+
+more-from-moz-mozilla-vpn-title = { -mozilla-vpn-brand-name }
+more-from-moz-mozilla-vpn-description = Discover an added layer of anonymous browsing and protection.
+
+more-from-moz-qr-code-box-firefox-mobile-title = Download using your mobile device. Point your camera at the QR code. When a link appears, tap it.
+more-from-moz-qr-code-box-firefox-mobile-button = Send an email to your phone instead
+more-from-moz-qr-code-firefox-mobile-img =
+    .alt = QR code to download { -brand-product-name } Mobile
+
+more-from-moz-button-mozilla-vpn-2 = Get VPN
+
+more-from-moz-learn-more-link = Learn more
+
+## These strings are for the Firefox Relay card in about:preferences moreFromMozilla page
+
+more-from-moz-firefox-relay-title = { -relay-brand-name }
+more-from-moz-firefox-relay-description = Protect your inbox and your identity with free email masking.
+more-from-moz-firefox-relay-button = Get { -relay-brand-short-name }
diff --git a/l10n-en-GB/browser/browser/preferences/permissions.ftl b/l10n-en-GB/browser/browser/preferences/permissions.ftl
new file mode 100644
index 0000000000..e3feea922f
--- /dev/null
+++ b/l10n-en-GB/browser/browser/preferences/permissions.ftl
@@ -0,0 +1,205 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+permissions-window2 =
+    .title = Exceptions
+    .style = min-width: 45em
+permissions-close-key =
+    .key = w
+permissions-address = Address of web site
+    .accesskey = d
+permissions-block =
+    .label = Block
+    .accesskey = B
+permissions-disable-etp =
+    .label = Add Exception
+    .accesskey = E
+permissions-session =
+    .label = Allow for Session
+    .accesskey = S
+permissions-allow =
+    .label = Allow
+    .accesskey = A
+permissions-button-off =
+    .label = Turn Off
+    .accesskey = O
+permissions-button-off-temporarily =
+    .label = Turn Off Temporarily
+    .accesskey = T
+permissions-site-name =
+    .label = Web Site
+permissions-status =
+    .label = Status
+permissions-remove =
+    .label = Remove Web Site
+    .accesskey = R
+permissions-remove-all =
+    .label = Remove All Web Sites
+    .accesskey = e
+permission-dialog =
+    .buttonlabelaccept = Save Changes
+    .buttonaccesskeyaccept = S
+permissions-autoplay-menu = Default for all web sites:
+permissions-searchbox =
+    .placeholder = Search Web Site
+permissions-capabilities-autoplay-allow =
+    .label = Allow Audio and Video
+permissions-capabilities-autoplay-block =
+    .label = Block Audio
+permissions-capabilities-autoplay-blockall =
+    .label = Block Audio and Video
+permissions-capabilities-allow =
+    .label = Allow
+permissions-capabilities-block =
+    .label = Block
+permissions-capabilities-prompt =
+    .label = Always Ask
+permissions-capabilities-listitem-allow =
+    .value = Allow
+permissions-capabilities-listitem-block =
+    .value = Block
+permissions-capabilities-listitem-allow-session =
+    .value = Allow for Session
+permissions-capabilities-listitem-off =
+    .value = Off
+permissions-capabilities-listitem-off-temporarily =
+    .value = Off temporarily
+
+## Invalid Hostname Dialog
+
+permissions-invalid-uri-title = Invalid Hostname Entered
+permissions-invalid-uri-label = Please enter a valid hostname
+
+## Exceptions - Tracking Protection
+
+permissions-exceptions-etp-window2 =
+    .title = Exceptions for Enhanced Tracking Protection
+    .style = { permissions-window2.style }
+permissions-exceptions-manage-etp-desc = You can specify which web sites have Enhanced Tracking Protection turned off. Type the exact address of the site you want to manage and then click Add Exception.
+
+## Exceptions - Cookies
+
+permissions-exceptions-cookie-window2 =
+    .title = Exceptions - Cookies and Site Data
+    .style = { permissions-window2.style }
+permissions-exceptions-cookie-desc = You can specify which web sites are always or never allowed to use cookies and site data.  Type the exact address of the site you want to manage and then click Block, Allow for Session, or Allow.
+
+## Exceptions - HTTPS-Only Mode
+
+permissions-exceptions-https-only-window2 =
+    .title = Exceptions - HTTPS-Only Mode
+    .style = { permissions-window2.style }
+permissions-exceptions-https-only-desc = You can turn off HTTPS-Only Mode for specific websites. { -brand-short-name } won’t attempt to upgrade the connection to secure HTTPS for those sites. Exceptions do not apply to private windows.
+permissions-exceptions-https-only-desc2 = You can turn off HTTPS-Only Mode for specific web sites. { -brand-short-name } won’t attempt to upgrade the connection to secure HTTPS for those sites.
+
+## Exceptions - Pop-ups
+
+permissions-exceptions-popup-window2 =
+    .title = Allowed Web Sites - Pop-ups
+    .style = { permissions-window2.style }
+permissions-exceptions-popup-desc = You can specify which web sites are allowed to open pop-up windows. Type the exact address of the site you want to allow and then click Allow.
+
+## Exceptions - Saved Logins
+
+permissions-exceptions-saved-logins-window2 =
+    .title = Exceptions - Saved Logins
+    .style = { permissions-window2.style }
+permissions-exceptions-saved-logins-desc = Logins for the following web sites will not be saved
+
+## Exceptions - Saved Passwords
+
+permissions-exceptions-saved-passwords-window =
+    .title = Exceptions - Saved Passwords
+    .style = { permissions-window2.style }
+permissions-exceptions-saved-passwords-desc = { -brand-short-name } won’t save passwords for sites listed here.
+
+## Exceptions - Add-ons
+
+permissions-exceptions-addons-window2 =
+    .title = Allowed Web Sites - Add-ons Installation
+    .style = { permissions-window2.style }
+permissions-exceptions-addons-desc = You can specify which web sites are allowed to install add-ons. Type the exact address of the site you want to allow and then click Allow.
+
+## Site Permissions - Autoplay
+
+permissions-site-autoplay-window2 =
+    .title = Settings - Autoplay
+    .style = { permissions-window2.style }
+permissions-site-autoplay-desc = You can manage the sites that do not follow your default autoplay settings here.
+
+## Site Permissions - Notifications
+
+permissions-site-notification-window2 =
+    .title = Settings - Notification Permissions
+    .style = { permissions-window2.style }
+permissions-site-notification-desc = The following web sites have requested to send you notifications. You can specify which web sites are allowed to send you notifications. You can also block new requests asking to allow notifications.
+permissions-site-notification-disable-label =
+    .label = Block new requests asking to allow notifications
+permissions-site-notification-disable-desc = This will prevent any web sites not listed above from requesting permission to send notifications. Blocking notifications may break some web site features.
+
+## Site Permissions - Location
+
+permissions-site-location-window2 =
+    .title = Settings - Location Permissions
+    .style = { permissions-window2.style }
+permissions-site-location-desc = The following web sites have requested to access your location. You can specify which web sites are allowed to access your location. You can also block new requests asking to access your location.
+permissions-site-location-disable-label =
+    .label = Block new requests asking to access your location
+permissions-site-location-disable-desc = This will prevent any web sites not listed above from requesting permission to access your location. Blocking access to your location may break some web site features.
+
+## Site Permissions - Virtual Reality
+
+permissions-site-xr-window2 =
+    .title = Settings - Virtual Reality Permissions
+    .style = { permissions-window2.style }
+permissions-site-xr-desc = The following web sites have requested to access your virtual reality devices. You can specify which web sites are allowed to access your virtual reality devices. You can also block new requests asking to access your virtual reality devices.
+permissions-site-xr-disable-label =
+    .label = Block new requests asking to access your virtual reality devices
+permissions-site-xr-disable-desc = This will prevent any web sites not listed above from requesting permission to access your virtual reality devices. Blocking access to your virtual reality devices may break some web site features.
+
+## Site Permissions - Camera
+
+permissions-site-camera-window2 =
+    .title = Settings - Camera Permissions
+    .style = { permissions-window2.style }
+permissions-site-camera-desc = The following web sites have requested to access your camera. You can specify which web sites are allowed to access your camera. You can also block new requests asking to access your camera.
+permissions-site-camera-disable-label =
+    .label = Block new requests asking to access your camera
+permissions-site-camera-disable-desc = This will prevent any web sites not listed above from requesting permission to access your camera. Blocking access to your camera may break some web site features.
+
+## Site Permissions - Microphone
+
+permissions-site-microphone-window2 =
+    .title = Settings - Microphone Permissions
+    .style = { permissions-window2.style }
+permissions-site-microphone-desc = The following web sites have requested to access your microphone. You can specify which web sites are allowed to access your microphone. You can also block new requests asking to access your microphone.
+permissions-site-microphone-disable-label =
+    .label = Block new requests asking to access your microphone
+permissions-site-microphone-disable-desc = This will prevent any web sites not listed above from requesting permission to access your microphone. Blocking access to your microphone may break some web site features.
+
+## Site Permissions - Speaker
+##
+## "Speaker" refers to an audio output device.
+
+permissions-site-speaker-window =
+    .title = Settings - Speaker Permissions
+    .style = { permissions-window2.style }
+permissions-site-speaker-desc = The following web sites have requested to select an audio output device. You can specify which web sites are allowed to select an audio output device.
+permissions-exceptions-doh-window =
+    .title = Web Site Exceptions for DNS over HTTPS
+    .style = { permissions-window2.style }
+permissions-exceptions-manage-doh-desc = { -brand-short-name } won’t use secure DNS on these sites and their subdomains.
+permissions-doh-entry-field = Enter web site domain name
+    .accesskey = d
+permissions-doh-add-exception =
+    .label = Add
+    .accesskey = A
+permissions-doh-col =
+    .label = Domain
+permissions-doh-remove =
+    .label = Remove
+    .accesskey = R
+permissions-doh-remove-all =
+    .label = Remove All
+    .accesskey = e
diff --git a/l10n-en-GB/browser/browser/preferences/preferences.ftl b/l10n-en-GB/browser/browser/preferences/preferences.ftl
new file mode 100644
index 0000000000..f587e3e6b3
--- /dev/null
+++ b/l10n-en-GB/browser/browser/preferences/preferences.ftl
@@ -0,0 +1,1386 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+do-not-track-description = Send web sites a “Do Not Track” signal that you don’t want to be tracked
+do-not-track-description2 =
+    .label = Send web sites a “Do Not Track” request
+    .accesskey = d
+do-not-track-learn-more = Learn more
+do-not-track-option-default-content-blocking-known =
+    .label = Only when { -brand-short-name } is set to block known trackers
+do-not-track-option-always =
+    .label = Always
+global-privacy-control-description =
+    .label = Tell web sites not to sell or share my data
+    .accesskey = s
+non-technical-privacy-header = Web Site Privacy Preferences
+# Do not translate.
+# "Global Privacy Control" or "GPC" are a web platform feature name and abbreviation
+# included to facilitate power-user search of the about:preferences page.
+global-privacy-control-search = Global Privacy Control (GPC)
+settings-page-title = Settings
+# This is used to determine the width of the search field in about:preferences,
+# in order to make the entire placeholder string visible
+#
+# Please keep the placeholder string short to avoid truncation.
+#
+# Notice: The value of the `.style` attribute is a CSS string, and the `width`
+# is the name of the CSS property. It is intended only to adjust the element's width.
+# Do not translate.
+search-input-box2 =
+    .style = width: 15.4em
+    .placeholder = Find in Settings
+managed-notice = Your browser is being managed by your organisation.
+category-list =
+    .aria-label = Categories
+pane-general-title = General
+category-general =
+    .tooltiptext = { pane-general-title }
+pane-home-title = Home
+category-home =
+    .tooltiptext = { pane-home-title }
+pane-search-title = Search
+category-search =
+    .tooltiptext = { pane-search-title }
+pane-privacy-title = Privacy & Security
+category-privacy =
+    .tooltiptext = { pane-privacy-title }
+pane-sync-title3 = Sync
+category-sync3 =
+    .tooltiptext = { pane-sync-title3 }
+pane-experimental-title = { -brand-short-name } Experiments
+category-experimental =
+    .tooltiptext = { -brand-short-name } Experiments
+pane-experimental-subtitle = Proceed with Caution
+pane-experimental-search-results-header = { -brand-short-name } Experiments: Proceed with Caution
+pane-experimental-description2 = Changing advanced configuration settings can impact { -brand-short-name } performance or security.
+pane-experimental-reset =
+    .label = Restore Defaults
+    .accesskey = R
+help-button-label = { -brand-short-name } Support
+addons-button-label = Extensions & Themes
+focus-search =
+    .key = f
+close-button =
+    .aria-label = Close
+
+## Browser Restart Dialog
+
+feature-enable-requires-restart = { -brand-short-name } must restart to enable this feature.
+feature-disable-requires-restart = { -brand-short-name } must restart to disable this feature.
+should-restart-title = Restart { -brand-short-name }
+should-restart-ok = Restart { -brand-short-name } now
+cancel-no-restart-button = Cancel
+restart-later = Restart Later
+
+## Extension Control Notifications
+##
+## These strings are used to inform the user
+## about changes made by extensions to browser settings.
+##
+## <img data-l10n-name="icon"/> is going to be replaced by the extension icon.
+##
+## Variables:
+##   $name (string) - Name of the extension
+
+# This string is shown to notify the user that the password manager setting
+# is being controlled by an extension
+extension-controlling-password-saving = <img data-l10n-name="icon"/> <strong>{ $name }</strong> controls this setting.
+# This string is shown to notify the user that their notifications permission
+# is being controlled by an extension.
+extension-controlling-web-notifications = <img data-l10n-name="icon"/> <strong>{ $name }</strong> controls this setting.
+# This string is shown to notify the user that Container Tabs
+# are being enabled by an extension.
+extension-controlling-privacy-containers = <img data-l10n-name="icon"/> <strong>{ $name }</strong> requires Container Tabs.
+# This string is shown to notify the user that their content blocking "All Detected Trackers"
+# preferences are being controlled by an extension.
+extension-controlling-websites-content-blocking-all-trackers = <img data-l10n-name="icon"/> <strong>{ $name }</strong> controls this setting.
+# This string is shown to notify the user that their proxy configuration preferences
+# are being controlled by an extension.
+extension-controlling-proxy-config = <img data-l10n-name ="icon"/> <strong>{ $name }</strong> controls how { -brand-short-name } connects to the internet.
+# This string is shown after the user disables an extension to notify the user
+# how to enable an extension that they disabled.
+#
+# <img data-l10n-name="addons-icon"/> will be replaced with Add-ons icon
+# <img data-l10n-name="menu-icon"/> will be replaced with Menu icon
+extension-controlled-enable = To enable the extension go to <img data-l10n-name="addons-icon"/> Add-ons in the <img data-l10n-name="menu-icon"/> menu.
+
+## Preferences UI Search Results
+
+search-results-header = Search Results
+# `<span data-l10n-name="query"></span>` will be replaced by the search term.
+search-results-empty-message2 = Sorry! There are no results in Settings for “<span data-l10n-name="query"></span>”.
+search-results-help-link = Need help? Visit <a data-l10n-name="url">{ -brand-short-name } Support</a>
+
+## General Section
+
+startup-header = Startup
+always-check-default =
+    .label = Always check if { -brand-short-name } is your default browser
+    .accesskey = y
+is-default = { -brand-short-name } is currently your default browser
+is-not-default = { -brand-short-name } is not your default browser
+set-as-my-default-browser =
+    .label = Make Default…
+    .accesskey = D
+startup-restore-windows-and-tabs =
+    .label = Open previous windows and tabs
+    .accesskey = s
+windows-launch-on-login =
+    .label = Open { -brand-short-name } automatically when your computer starts up
+    .accesskey = O
+windows-launch-on-login-disabled = This preference has been disabled in Windows. To change, visit <a data-l10n-name="startup-link">Startup Apps</a> in System settings.
+startup-restore-warn-on-quit =
+    .label = Warn you when quitting the browser
+disable-extension =
+    .label = Disable Extension
+preferences-data-migration-header = Import Browser Data
+preferences-data-migration-description = Import bookmarks, passwords, history and auto-fill data into { -brand-short-name }.
+preferences-data-migration-button =
+    .label = Import Data
+    .accesskey = m
+tabs-group-header = Tabs
+ctrl-tab-recently-used-order =
+    .label = Ctrl+Tab cycles through tabs in recently used order
+    .accesskey = T
+open-new-link-as-tabs =
+    .label = Open links in tabs instead of new windows
+    .accesskey = w
+confirm-on-close-multiple-tabs =
+    .label = Confirm before closing multiple tabs
+    .accesskey = m
+# This string is used for the confirm before quitting preference.
+# Variables:
+#   $quitKey (string) - the quit keyboard shortcut, and formatted
+#                       in the same manner as it would appear,
+#                       for example, in the File menu.
+confirm-on-quit-with-key =
+    .label = Confirm before quitting with { $quitKey }
+    .accesskey = b
+warn-on-open-many-tabs =
+    .label = Warn you when opening multiple tabs might slow down { -brand-short-name }
+    .accesskey = d
+switch-to-new-tabs =
+    .label = When you open a link, image or media in a new tab, switch to it immediately
+    .accesskey = h
+show-tabs-in-taskbar =
+    .label = Show tab previews in the Windows taskbar
+    .accesskey = k
+browser-containers-enabled =
+    .label = Enable Container Tabs
+    .accesskey = n
+browser-containers-learn-more = Learn more
+browser-containers-settings =
+    .label = Settings…
+    .accesskey = i
+containers-disable-alert-title = Close All Container Tabs?
+
+## Variables:
+##   $tabCount (number) - Number of tabs
+
+containers-disable-alert-desc =
+    { $tabCount ->
+        [one] If you disable Container Tabs now, { $tabCount } container tab will be closed. Are you sure you want to disable Container Tabs?
+       *[other] If you disable Container Tabs now, { $tabCount } container tabs will be closed. Are you sure you want to disable Container Tabs?
+    }
+containers-disable-alert-ok-button =
+    { $tabCount ->
+        [one] Close { $tabCount } Container Tab
+       *[other] Close { $tabCount } Container Tabs
+    }
+
+##
+
+containers-disable-alert-cancel-button = Keep enabled
+containers-remove-alert-title = Remove This Container?
+# Variables:
+#   $count (number) - Number of tabs that will be closed.
+containers-remove-alert-msg =
+    { $count ->
+        [one] If you remove this Container now, { $count } container tab will be closed. Are you sure you want to remove this Container?
+       *[other] If you remove this Container now, { $count } container tabs will be closed. Are you sure you want to remove this Container?
+    }
+containers-remove-ok-button = Remove this Container
+containers-remove-cancel-button = Don’t remove this Container
+
+## General Section - Language & Appearance
+
+language-and-appearance-header = Language and Appearance
+preferences-web-appearance-header = Web site appearance
+preferences-web-appearance-description = Some web sites adapt their colour scheme based on your preferences. Choose which colour scheme you’d like to use for those sites.
+preferences-web-appearance-choice-auto = Automatic
+preferences-web-appearance-choice-light = Light
+preferences-web-appearance-choice-dark = Dark
+preferences-web-appearance-choice-tooltip-auto =
+    .title = Automatically change web site backgrounds and content based on your system settings and { -brand-short-name } theme.
+preferences-web-appearance-choice-tooltip-light =
+    .title = Use a light appearance for web site backgrounds and content.
+preferences-web-appearance-choice-tooltip-dark =
+    .title = Use a dark appearance for web site backgrounds and content.
+preferences-web-appearance-choice-input-auto =
+    .aria-description = { preferences-web-appearance-choice-tooltip-auto.title }
+preferences-web-appearance-choice-input-light =
+    .aria-description = { preferences-web-appearance-choice-tooltip-light.title }
+preferences-web-appearance-choice-input-dark =
+    .aria-description = { preferences-web-appearance-choice-tooltip-dark.title }
+# This can appear when using windows HCM or "Override colors: always" without
+# system colors.
+preferences-web-appearance-override-warning = Your colour selections are overriding web site appearance. <a data-l10n-name="colors-link">Manage colours</a>
+# This message contains one link. It can be moved within the sentence as needed
+# to adapt to your language, but should not be changed.
+preferences-web-appearance-footer = Manage { -brand-short-name } themes in <a data-l10n-name="themes-link">Extensions & Themes</a>
+preferences-colors-header = Colours
+preferences-colors-description = Override { -brand-short-name }’s default colours for text, web site backgrounds, and links.
+preferences-colors-manage-button =
+    .label = Manage Colours…
+    .accesskey = C
+preferences-fonts-header = Fonts
+default-font = Default font
+    .accesskey = D
+default-font-size = Size
+    .accesskey = S
+advanced-fonts =
+    .label = Advanced…
+    .accesskey = A
+# Zoom is a noun, and the message is used as header for a group of options
+preferences-zoom-header = Zoom
+preferences-default-zoom = Default zoom
+    .accesskey = z
+# Variables:
+#   $percentage (number) - Zoom percentage value
+preferences-default-zoom-value =
+    .label = { $percentage }%
+preferences-zoom-text-only =
+    .label = Zoom text only
+    .accesskey = t
+language-header = Language
+choose-language-description = Choose your preferred language for displaying pages
+choose-button =
+    .label = Choose…
+    .accesskey = o
+choose-browser-language-description = Choose the languages used to display menus, messages, and notifications from { -brand-short-name }.
+manage-browser-languages-button =
+    .label = Set Alternatives…
+    .accesskey = l
+confirm-browser-language-change-description = Restart { -brand-short-name } to apply these changes
+confirm-browser-language-change-button = Apply and Restart
+translate-web-pages =
+    .label = Translate web content
+    .accesskey = T
+fx-translate-web-pages = { -translations-brand-name }
+# The <img> element is replaced by the logo of the provider
+# used to provide machine translations for web pages.
+translate-attribution = Translations by <img data-l10n-name="logo"/>
+translate-exceptions =
+    .label = Exceptions…
+    .accesskey = x
+# Variables:
+#    $localeName (string) - Localized name of the locale to be used.
+use-system-locale =
+    .label = Use your operating system settings for “{ $localeName }” to format dates, times, numbers, and measurements.
+check-user-spelling =
+    .label = Check your spelling as you type
+    .accesskey = t
+
+## General Section - Files and Applications
+
+files-and-applications-title = Files and Applications
+download-header = Downloads
+download-save-where = Save files to
+    .accesskey = v
+download-choose-folder =
+    .label =
+        { PLATFORM() ->
+            [macos] Choose…
+           *[other] Browse…
+        }
+    .accesskey =
+        { PLATFORM() ->
+            [macos] e
+           *[other] o
+        }
+download-always-ask-where =
+    .label = Always ask you where to save files
+    .accesskey = A
+applications-header = Applications
+applications-description = Choose how { -brand-short-name } handles the files you download from the web or the applications you use while browsing.
+applications-filter =
+    .placeholder = Search file types or applications
+applications-type-column =
+    .label = Content Type
+    .accesskey = T
+applications-action-column =
+    .label = Action
+    .accesskey = A
+# Variables:
+#   $extension (String) - file extension (e.g .TXT)
+applications-file-ending = { $extension } file
+applications-action-save =
+    .label = Save File
+# Variables:
+#   $app-name (String) - Name of an application (e.g Adobe Acrobat)
+applications-use-app =
+    .label = Use { $app-name }
+# Variables:
+#   $app-name (String) - Name of an application (e.g Adobe Acrobat)
+applications-use-app-default =
+    .label = Use { $app-name } (default)
+applications-use-os-default =
+    .label =
+        { PLATFORM() ->
+            [macos] Use macOS default application
+            [windows] Use Windows default application
+           *[other] Use system default application
+        }
+applications-use-other =
+    .label = Use other…
+applications-select-helper = Select Helper Application
+applications-manage-app =
+    .label = Application Details…
+applications-always-ask =
+    .label = Always ask
+# Variables:
+#   $type-description (string) - Description of the type (e.g "Portable Document Format")
+#   $type (string) - The MIME type (e.g application/binary)
+applications-type-description-with-type = { $type-description } ({ $type })
+# Variables:
+#   $extension (string) - File extension (e.g .TXT)
+#   $type (string) - The MIME type (e.g application/binary)
+applications-file-ending-with-type = { applications-file-ending } ({ $type })
+# Variables:
+#   $plugin-name (string) - Name of a plugin (e.g Adobe Flash)
+applications-use-plugin-in =
+    .label = Use { $plugin-name } (in { -brand-short-name })
+applications-open-inapp =
+    .label = Open in { -brand-short-name }
+
+## The strings in this group are used to populate
+## selected label element based on the string from
+## the selected menu item.
+
+applications-use-plugin-in-label =
+    .value = { applications-use-plugin-in.label }
+applications-action-save-label =
+    .value = { applications-action-save.label }
+applications-use-app-label =
+    .value = { applications-use-app.label }
+applications-open-inapp-label =
+    .value = { applications-open-inapp.label }
+applications-always-ask-label =
+    .value = { applications-always-ask.label }
+applications-use-app-default-label =
+    .value = { applications-use-app-default.label }
+applications-use-other-label =
+    .value = { applications-use-other.label }
+applications-use-os-default-label =
+    .value = { applications-use-os-default.label }
+
+##
+
+applications-handle-new-file-types-description = What should { -brand-short-name } do with other files?
+applications-save-for-new-types =
+    .label = Save files
+    .accesskey = S
+applications-ask-before-handling =
+    .label = Ask whether to open or save files
+    .accesskey = A
+drm-content-header = Digital Rights Management (DRM) Content
+play-drm-content =
+    .label = Play DRM-controlled content
+    .accesskey = P
+play-drm-content-learn-more = Learn more
+update-application-title = { -brand-short-name } Updates
+update-application-description = Keep { -brand-short-name } up to date for the best performance, stability, and security.
+# Variables:
+# $version (string) - Firefox version
+update-application-version = Version { $version } <a data-l10n-name="learn-more">What’s new</a>
+update-history =
+    .label = Show Update History…
+    .accesskey = p
+update-application-allow-description = Allow { -brand-short-name } to
+update-application-auto =
+    .label = Automatically install updates (recommended)
+    .accesskey = A
+update-application-check-choose =
+    .label = Check for updates but let you choose to install them
+    .accesskey = C
+update-application-manual =
+    .label = Never check for updates (not recommended)
+    .accesskey = N
+update-application-background-enabled =
+    .label = When { -brand-short-name } is not running
+    .accesskey = W
+update-application-warning-cross-user-setting = This setting will apply to all Windows accounts and { -brand-short-name } profiles using this installation of { -brand-short-name }.
+update-application-use-service =
+    .label = Use a background service to install updates
+    .accesskey = b
+update-application-suppress-prompts =
+    .label = Show fewer update notification prompts
+    .accesskey = n
+update-setting-write-failure-title2 = Error saving Update settings
+# Variables:
+#   $path (string) - Path to the configuration file
+# The newlines between the main text and the line containing the path is
+# intentional so the path is easier to identify.
+update-setting-write-failure-message2 =
+    { -brand-short-name } encountered an error and didn’t save this change. Note that changing this update setting requires permission to write to the file below. You or a system administrator may be able resolve the error by granting the Users group full control to this file.
+    
+    Could not write to file: { $path }
+update-in-progress-title = Update In Progress
+update-in-progress-message = Do you want { -brand-short-name } to continue with this update?
+update-in-progress-ok-button = &Discard
+# Continue is the cancel button so pressing escape or using a platform standard
+# method of closing the UI will not discard the update.
+update-in-progress-cancel-button = &Continue
+
+## General Section - Performance
+
+performance-title = Performance
+performance-use-recommended-settings-checkbox =
+    .label = Use recommended performance settings
+    .accesskey = U
+performance-use-recommended-settings-desc = These settings are tailored to your computer’s hardware and operating system.
+performance-settings-learn-more = Learn more
+performance-allow-hw-accel =
+    .label = Use hardware acceleration when available
+    .accesskey = r
+performance-limit-content-process-option = Content process limit
+    .accesskey = L
+performance-limit-content-process-enabled-desc = Additional content processes can improve performance when using multiple tabs, but will also use more memory.
+performance-limit-content-process-blocked-desc = Modifying the number of content processes is only possible with multiprocess { -brand-short-name }. <a data-l10n-name="learn-more">Learn how to check if multiprocess is enabled</a>
+# Variables:
+#   $num (number) - Default value of the `dom.ipc.processCount` pref.
+performance-default-content-process-count =
+    .label = { $num } (default)
+
+## General Section - Browsing
+
+browsing-title = Browsing
+browsing-use-autoscroll =
+    .label = Use autoscrolling
+    .accesskey = a
+browsing-use-smooth-scrolling =
+    .label = Use smooth scrolling
+    .accesskey = m
+browsing-gtk-use-non-overlay-scrollbars =
+    .label = Always show scrollbars
+    .accesskey = o
+browsing-always-underline-links =
+    .label = Always underline links
+    .accesskey = u
+browsing-use-onscreen-keyboard =
+    .label = Show a touch keyboard when necessary
+    .accesskey = c
+browsing-use-cursor-navigation =
+    .label = Always use the cursor keys to navigate within pages
+    .accesskey = k
+browsing-use-full-keyboard-navigation =
+    .label = Use the tab key to move focus between form controls and links
+    .accesskey = t
+browsing-search-on-start-typing =
+    .label = Search for text when you start typing
+    .accesskey = x
+browsing-picture-in-picture-toggle-enabled =
+    .label = Enable picture-in-picture video controls
+    .accesskey = E
+browsing-picture-in-picture-learn-more = Learn more
+browsing-media-control =
+    .label = Control media via keyboard, headset, or virtual interface
+    .accesskey = v
+browsing-media-control-learn-more = Learn more
+browsing-cfr-recommendations =
+    .label = Recommend extensions as you browse
+    .accesskey = R
+browsing-cfr-features =
+    .label = Recommend features as you browse
+    .accesskey = f
+browsing-cfr-recommendations-learn-more = Learn more
+
+## General Section - Proxy
+
+network-settings-title = Network Settings
+network-proxy-connection-description = Configure how { -brand-short-name } connects to the internet.
+network-proxy-connection-learn-more = Learn more
+network-proxy-connection-settings =
+    .label = Settings…
+    .accesskey = e
+
+## Home Section
+
+home-new-windows-tabs-header = New Windows and Tabs
+home-new-windows-tabs-description2 = Choose what you see when you open your homepage, new windows, and new tabs.
+
+## Home Section - Home Page Customization
+
+home-homepage-mode-label = Homepage and new windows
+home-newtabs-mode-label = New tabs
+home-restore-defaults =
+    .label = Restore Defaults
+    .accesskey = R
+home-mode-choice-default-fx =
+    .label = { -firefox-home-brand-name } (Default)
+home-mode-choice-custom =
+    .label = Custom URLs…
+home-mode-choice-blank =
+    .label = Blank Page
+home-homepage-custom-url =
+    .placeholder = Paste a URL…
+# This string has a special case for '1' and [other] (default). If necessary for
+# your language, you can add {$tabCount} to your translations and use the
+# standard CLDR forms, or only use the form for [other] if both strings should
+# be identical.
+use-current-pages =
+    .label =
+        { $tabCount ->
+            [1] Use Current Page
+           *[other] Use Current Pages
+        }
+    .accesskey = C
+choose-bookmark =
+    .label = Use Bookmark…
+    .accesskey = B
+
+## Home Section - Firefox Home Content Customization
+
+home-prefs-content-header2 = { -firefox-home-brand-name } Content
+home-prefs-content-description2 = Choose what content you want on your { -firefox-home-brand-name } screen.
+home-prefs-search-header =
+    .label = Web Search
+home-prefs-shortcuts-header =
+    .label = Shortcuts
+home-prefs-shortcuts-description = Sites you save or visit
+home-prefs-shortcuts-by-option-sponsored =
+    .label = Sponsored shortcuts
+
+## Variables:
+##  $provider (string) - Name of the corresponding content provider, e.g "Pocket".
+
+home-prefs-recommended-by-header =
+    .label = Recommended by { $provider }
+home-prefs-recommended-by-description-new = Exceptional content curated by { $provider }, part of the { -brand-product-name } family
+
+##
+
+home-prefs-recommended-by-learn-more = How it works
+home-prefs-recommended-by-option-sponsored-stories =
+    .label = Sponsored Stories
+home-prefs-recommended-by-option-recent-saves =
+    .label = Show Recent Saves
+home-prefs-highlights-option-visited-pages =
+    .label = Visited Pages
+home-prefs-highlights-options-bookmarks =
+    .label = Bookmarks
+home-prefs-highlights-option-most-recent-download =
+    .label = Most Recent Download
+home-prefs-highlights-option-saved-to-pocket =
+    .label = Pages Saved to { -pocket-brand-name }
+home-prefs-recent-activity-header =
+    .label = Recent activity
+home-prefs-recent-activity-description = A selection of recent sites and content
+# For the "Snippets" feature traditionally on about:home.
+# Alternative translation options: "Small Note" or something that
+# expresses the idea of "a small message, shortened from something else,
+# and non-essential but also not entirely trivial and useless.
+home-prefs-snippets-header =
+    .label = Snippets
+home-prefs-snippets-description-new = Tips and news from { -vendor-short-name } and { -brand-product-name }
+# Variables:
+#   $num (number) - Number of rows displayed
+home-prefs-sections-rows-option =
+    .label =
+        { $num ->
+            [one] { $num } row
+           *[other] { $num } rows
+        }
+
+## Search Section
+
+search-bar-header = Search Bar
+search-bar-hidden =
+    .label = Use the address bar for search and navigation
+search-bar-shown =
+    .label = Add search bar in toolbar
+search-engine-default-header = Default Search Engine
+search-engine-default-desc-2 = This is your default search engine in the address bar and search bar. You can switch it at any time.
+search-engine-default-private-desc-2 = Choose a different default search engine for Private Windows only
+search-separate-default-engine =
+    .label = Use this search engine in Private Windows
+    .accesskey = U
+search-suggestions-header = Search Suggestions
+search-suggestions-desc = Choose how suggestions from search engines appear.
+search-suggestions-option =
+    .label = Provide search suggestions
+    .accesskey = s
+search-show-suggestions-option =
+    .label = Show search suggestions
+    .accesskey = S
+search-show-suggestions-url-bar-option =
+    .label = Show search suggestions in address bar results
+    .accesskey = l
+# With this option enabled, on the search results page
+# the URL will be replaced by the search terms in the address bar
+# when using the current default search engine.
+search-show-search-term-option =
+    .label = Show search terms instead of URL on default search engine results page
+# This string describes what the user will observe when the system
+# prioritizes search suggestions over browsing history in the results
+# that extend down from the address bar. In the original English string,
+# "ahead" refers to location (appearing most proximate to), not time
+# (appearing before).
+search-show-suggestions-above-history-option =
+    .label = Show search suggestions ahead of browsing history in address bar results
+search-show-suggestions-private-windows =
+    .label = Show search suggestions in Private Windows
+suggestions-addressbar-settings-generic2 = Change settings for other address bar suggestions
+search-suggestions-cant-show = Search suggestions will not be shown in location bar results because you have configured { -brand-short-name } to never remember history.
+search-one-click-header2 = Search Shortcuts
+search-one-click-desc = Choose the alternative search engines that appear below the address bar and search bar when you start to enter a keyword.
+search-choose-engine-column =
+    .label = Search Engine
+search-choose-keyword-column =
+    .label = Keyword
+search-restore-default =
+    .label = Restore Default Search Engines
+    .accesskey = D
+search-remove-engine =
+    .label = Remove
+    .accesskey = R
+search-add-engine =
+    .label = Add
+    .accesskey = A
+search-find-more-link = Find more search engines
+# This warning is displayed when the chosen keyword is already in use
+# ('Duplicate' is an adjective)
+search-keyword-warning-title = Duplicate Keyword
+# Variables:
+#   $name (string) - Name of a search engine.
+search-keyword-warning-engine = You have chosen a keyword that is currently in use by “{ $name }”. Please select another.
+search-keyword-warning-bookmark = You have chosen a keyword that is currently in use by a bookmark. Please select another.
+
+## Containers Section
+
+containers-back-button2 =
+    .aria-label = Back to Settings
+containers-header = Container Tabs
+containers-add-button =
+    .label = Add New Container
+    .accesskey = A
+containers-new-tab-check =
+    .label = Select a container for each new tab
+    .accesskey = S
+containers-settings-button =
+    .label = Settings
+containers-remove-button =
+    .label = Remove
+
+## Firefox account - Signed out. Note that "Sync" and "Firefox account" are now
+## more discrete ("signed in" no longer means "and sync is connected").
+
+sync-signedout-caption = Take Your Web With You
+sync-signedout-description2 = Synchronise your bookmarks, history, tabs, passwords, add-ons and settings across all your devices.
+sync-signedout-account-signin3 =
+    .label = Sign in to sync…
+    .accesskey = i
+# This message contains two links and two icon images.
+#   `<img data-l10n-name="android-icon"/>` - Android logo icon
+#   `<a data-l10n-name="android-link">` - Link to Android Download
+#   `<img data-l10n-name="ios-icon">` - iOS logo icon
+#   `<a data-l10n-name="ios-link">` - Link to iOS Download
+#
+# They can be moved within the sentence as needed to adapt
+# to your language, but should not be changed or translated.
+sync-mobile-promo = Download Firefox for <img data-l10n-name="android-icon"/> <a data-l10n-name="android-link">Android</a> or <img data-l10n-name="ios-icon"/> <a data-l10n-name="ios-link">iOS</a> to synchronise with your mobile device.
+
+## Firefox account - Signed in
+
+sync-profile-picture =
+    .tooltiptext = Change profile picture
+sync-sign-out =
+    .label = Sign Out…
+    .accesskey = g
+sync-manage-account = Manage account
+    .accesskey = o
+
+## Variables
+## $email (string) - Email used for Firefox account
+
+sync-signedin-unverified = { $email } is not verified.
+sync-signedin-login-failure = Please sign in to reconnect { $email }
+
+##
+
+sync-resend-verification =
+    .label = Resend Verification
+    .accesskey = d
+sync-verify-account =
+    .label = Verify Account
+    .accesskey = V
+sync-remove-account =
+    .label = Remove Account
+    .accesskey = R
+sync-sign-in =
+    .label = Sign in
+    .accesskey = g
+
+## Sync section - enabling or disabling sync.
+
+prefs-syncing-on = Syncing: ON
+prefs-syncing-off = Syncing: OFF
+prefs-sync-turn-on-syncing =
+    .label = Turn on synchronisation…
+    .accesskey = s
+prefs-sync-offer-setup-label2 = Synchronise your bookmarks, history, tabs, passwords, add-ons and settings across all your devices.
+prefs-sync-now =
+    .labelnotsyncing = Synchronise Now
+    .accesskeynotsyncing = N
+    .labelsyncing = Synchronising…
+prefs-sync-now-button =
+    .label = Synchronise Now
+    .accesskey = N
+prefs-syncing-button =
+    .label = Synchronising…
+
+## The list of things currently syncing.
+
+sync-syncing-across-devices-heading = You are synchronising these items across all your connected devices:
+sync-currently-syncing-bookmarks = Bookmarks
+sync-currently-syncing-history = History
+sync-currently-syncing-tabs = Open tabs
+sync-currently-syncing-logins-passwords = Logins and passwords
+sync-currently-syncing-passwords = Passwords
+sync-currently-syncing-addresses = Addresses
+sync-currently-syncing-creditcards = Credit cards
+sync-currently-syncing-payment-methods = Payment methods
+sync-currently-syncing-addons = Add-ons
+sync-currently-syncing-settings = Settings
+sync-change-options =
+    .label = Change…
+    .accesskey = C
+
+## The "Choose what to sync" dialog.
+
+sync-choose-what-to-sync-dialog3 =
+    .title = Choose What To Synchronise
+    .style = min-width: 36em;
+    .buttonlabelaccept = Save Changes
+    .buttonaccesskeyaccept = S
+    .buttonlabelextra2 = Disconnect…
+    .buttonaccesskeyextra2 = D
+sync-choose-dialog-subtitle = Changes to the list of items to synchronise will be reflected across all your connected devices.
+sync-engine-bookmarks =
+    .label = Bookmarks
+    .accesskey = m
+sync-engine-history =
+    .label = History
+    .accesskey = r
+sync-engine-tabs =
+    .label = Open tabs
+    .tooltiptext = A list of what’s open on all synchronised devices
+    .accesskey = T
+sync-engine-logins-passwords =
+    .label = Logins and passwords
+    .tooltiptext = Usernames and passwords you’ve saved
+    .accesskey = L
+sync-engine-passwords =
+    .label = Passwords
+    .tooltiptext = Passwords you’ve saved
+    .accesskey = P
+sync-engine-addresses =
+    .label = Addresses
+    .tooltiptext = Postal addresses you’ve saved (desktop only)
+    .accesskey = e
+sync-engine-creditcards =
+    .label = Credit cards
+    .tooltiptext = Names, numbers and expiry dates (desktop only)
+    .accesskey = C
+sync-engine-payment-methods2 =
+    .label = Payment methods
+    .tooltiptext = Names, card numbers, and expiry dates
+    .accesskey = n
+sync-engine-addons =
+    .label = Add-ons
+    .tooltiptext = Extensions and themes for Firefox desktop
+    .accesskey = A
+sync-engine-settings =
+    .label = Settings
+    .tooltiptext = General, Privacy, and Security settings you’ve changed
+    .accesskey = s
+
+## The device name controls.
+
+sync-device-name-header = Device Name
+sync-device-name-change =
+    .label = Change Device Name…
+    .accesskey = h
+sync-device-name-cancel =
+    .label = Cancel
+    .accesskey = n
+sync-device-name-save =
+    .label = Save
+    .accesskey = v
+sync-connect-another-device = Connect another device
+
+## These strings are shown in a desktop notification after the
+## user requests we resend a verification email.
+
+sync-verification-sent-title = Verification Sent
+# Variables:
+#   $email (String): Email address of user's Firefox account.
+sync-verification-sent-body = A verification link has been sent to { $email }.
+sync-verification-not-sent-title = Unable to Send Verification
+sync-verification-not-sent-body = We are unable to send a verification mail at this time, please try again later.
+
+## Privacy Section
+
+privacy-header = Browser Privacy
+
+## Privacy Section - Logins and Passwords
+
+# The search keyword isn't shown to users but is used to find relevant settings in about:preferences.
+pane-privacy-logins-and-passwords-header = Logins and Passwords
+    .searchkeywords = { -lockwise-brand-short-name }
+# Checkbox to control whether UI is shown to users to save or fill logins/passwords.
+forms-ask-to-save-logins =
+    .label = Ask to save logins and passwords for web sites
+    .accesskey = r
+
+## Privacy Section - Passwords
+
+# "Logins" is the former term for "Passwords". Users should find password settings
+# by searching for the former term "logins". It's not displayed in the UI.
+pane-privacy-passwords-header = Passwords
+    .searchkeywords = logins
+# Checkbox to control whether UI is shown to users to save or fill logins/passwords.
+forms-ask-to-save-passwords =
+    .label = Ask to save passwords
+    .accesskey = A
+forms-exceptions =
+    .label = Exceptions…
+    .accesskey = x
+forms-generate-passwords =
+    .label = Suggest and generate strong passwords
+    .accesskey = u
+forms-suggest-passwords =
+    .label = Suggest strong passwords
+    .accesskey = S
+forms-breach-alerts =
+    .label = Show alerts about passwords for breached web sites
+    .accesskey = b
+forms-breach-alerts-learn-more-link = Learn more
+preferences-relay-integration-checkbox =
+    .label = Suggest { -relay-brand-name } email masks to protect your email address
+preferences-relay-integration-checkbox2 =
+    .label = Suggest { -relay-brand-name } email masks to protect your email address
+    .accesskey = r
+relay-integration-learn-more-link = Learn more
+# Checkbox which controls filling saved logins into fields automatically when they appear, in some cases without user interaction.
+forms-fill-logins-and-passwords =
+    .label = Autofill logins and passwords
+    .accesskey = i
+forms-saved-logins =
+    .label = Saved Logins…
+    .accesskey = L
+# Checkbox which controls filling saved logins into fields automatically when they appear, in some cases without user interaction.
+forms-fill-usernames-and-passwords =
+    .label = Fill usernames and passwords automatically
+    .accesskey = F
+forms-saved-passwords =
+    .label = Saved passwords
+    .accesskey = d
+forms-primary-pw-use =
+    .label = Use a Primary Password
+    .accesskey = U
+forms-primary-pw-learn-more-link = Learn more
+# This string uses the former name of the Primary Password feature
+# ("Master Password" in English) so that the preferences can be found
+# when searching for the old name. The accesskey is unused.
+forms-master-pw-change =
+    .label = Change Master Password…
+    .accesskey = M
+forms-primary-pw-change =
+    .label = Change Primary Password…
+    .accesskey = P
+# Leave this message empty if the translation for "Primary Password" matches
+# "Master Password" in your language. If you're editing the FTL file directly,
+# use { "" } as the value.
+forms-primary-pw-former-name = Formerly known as Master Password
+forms-primary-pw-fips-title = You are currently in FIPS mode. FIPS requires a non-empty Primary Password.
+forms-master-pw-fips-desc = Password Change Failed
+forms-windows-sso =
+    .label = Allow Windows single sign-on for Microsoft, work, and school accounts
+forms-windows-sso-learn-more-link = Learn more
+forms-windows-sso-desc = Manage accounts in your device settings
+windows-passkey-settings-label = Manage passkeys in system settings
+
+## OS Authentication dialog
+
+# This message can be seen by trying to add a Primary Password.
+primary-password-os-auth-dialog-message-win = To create a Primary Password, enter your Windows login credentials. This helps protect the security of your accounts.
+# This message can be seen by trying to add a Primary Password.
+# The macOS strings are preceded by the operating system with "Firefox is trying to "
+# and includes subtitle of "Enter password for the user "xxx" to allow this." These
+# notes are only valid for English. Please test in your locale.
+primary-password-os-auth-dialog-message-macosx = create a Primary Password
+master-password-os-auth-dialog-caption = { -brand-full-name }
+
+## Privacy section - Autofill
+
+pane-privacy-autofill-header = Autofill
+autofill-addresses-checkbox = Save and fill addresses
+    .accesskey = a
+autofill-saved-addresses-button = Saved addresses
+    .accesskey = S
+autofill-payment-methods-checkbox-message = Save and fill payment methods
+    .accesskey = m
+autofill-payment-methods-checkbox-submessage = Includes credit and debit cards
+    .accesskey = I
+autofill-saved-payment-methods-button = Saved payment methods
+    .accesskey = v
+autofill-reauth-checkbox =
+    { PLATFORM() ->
+        [macos] Require macOS authentication to fill and edit payment methods.
+        [windows] Require Windows authentication to fill and edit payment methods.
+        [linux] Require Linux authentication to fill and edit payment methods.
+       *[other] Require authentication to fill and edit payment methods.
+    }
+    .accesskey = o
+
+## Privacy Section - History
+
+history-header = History
+# This label is followed, on the same line, by a dropdown list of options
+# (Remember history, etc.).
+# In English it visually creates a full sentence, e.g.
+# "Firefox will" + "Remember history".
+#
+# If this doesn't work for your language, you can translate this message:
+#   - Simply as "Firefox", moving the verb into each option.
+#     This will result in "Firefox" + "Will remember history", etc.
+#   - As a stand-alone message, for example "Firefox history settings:".
+history-remember-label = { -brand-short-name } will
+    .accesskey = w
+history-remember-option-all =
+    .label = Remember history
+history-remember-option-never =
+    .label = Never remember history
+history-remember-option-custom =
+    .label = Use custom settings for history
+history-remember-description = { -brand-short-name } will remember your browsing, download, form, and search history.
+history-dontremember-description = { -brand-short-name } will use the same settings as private browsing, and will not remember any history as you browse the Web.
+history-private-browsing-permanent =
+    .label = Always use private browsing mode
+    .accesskey = p
+history-remember-browser-option =
+    .label = Remember browsing and download history
+    .accesskey = b
+history-remember-search-option =
+    .label = Remember search and form history
+    .accesskey = f
+history-clear-on-close-option =
+    .label = Clear history when { -brand-short-name } closes
+    .accesskey = r
+history-clear-on-close-settings =
+    .label = Settings…
+    .accesskey = t
+history-clear-button =
+    .label = Clear History…
+    .accesskey = s
+
+## Privacy Section - Site Data
+
+sitedata-header = Cookies and Site Data
+sitedata-total-size-calculating = Calculating site data and cache size…
+# Variables:
+#   $value (number) - Value of the unit (for example: 4.6, 500)
+#   $unit (string) - Name of the unit (for example: "bytes", "KB")
+sitedata-total-size = Your stored cookies, site data, and cache are currently using { $value } { $unit } of disk space.
+sitedata-learn-more = Learn more
+sitedata-delete-on-close =
+    .label = Delete cookies and site data when { -brand-short-name } is closed
+    .accesskey = c
+sitedata-delete-on-close-private-browsing = In permanent private browsing mode, cookies and site data will always be cleared when { -brand-short-name } is closed.
+sitedata-allow-cookies-option =
+    .label = Accept cookies and site data
+    .accesskey = A
+sitedata-disallow-cookies-option =
+    .label = Block cookies and site data
+    .accesskey = B
+# This label means 'type of content that is blocked', and is followed by a drop-down list with content types below.
+# The list items are the strings named sitedata-block-*-option*.
+sitedata-block-desc = Type blocked
+    .accesskey = T
+sitedata-option-block-cross-site-trackers =
+    .label = Cross-site trackers
+sitedata-option-block-cross-site-tracking-cookies =
+    .label = Cross-site tracking cookies
+sitedata-option-block-cross-site-cookies =
+    .label = Cross-site tracking cookies, and isolate other cross-site cookies
+sitedata-option-block-unvisited =
+    .label = Cookies from unvisited web sites
+sitedata-option-block-all-cross-site-cookies =
+    .label = All cross-site cookies (may cause web sites to break)
+sitedata-option-block-all =
+    .label = All cookies (will cause web sites to break)
+sitedata-clear =
+    .label = Clear Data…
+    .accesskey = l
+sitedata-settings =
+    .label = Manage Data…
+    .accesskey = M
+sitedata-cookies-exceptions =
+    .label = Manage Exceptions…
+    .accesskey = x
+
+## Privacy Section - Cookie Banner Handling
+
+cookie-banner-handling-header = Cookie Banner Reduction
+cookie-banner-handling-description = { -brand-short-name } automatically tries to reject cookie requests on cookie banners on supported sites.
+
+## Privacy Section - Cookie Banner Blocking
+
+cookie-banner-blocker-header = Cookie Banner Blocker
+cookie-banner-blocker-description = When a site asks if they can use cookies in private browsing mode, { -brand-short-name } automatically refuses for you. Only on supported sites.
+cookie-banner-learn-more = Learn More
+forms-handle-cookie-banners =
+    .label = Reduce Cookie Banners
+cookie-banner-blocker-checkbox-label =
+    .label = Automatically refuse cookie banners
+
+## Privacy Section - Address Bar
+
+addressbar-header = Address Bar
+addressbar-suggest = When using the address bar, suggest
+addressbar-locbar-history-option =
+    .label = Browsing history
+    .accesskey = H
+addressbar-locbar-bookmarks-option =
+    .label = Bookmarks
+    .accesskey = k
+addressbar-locbar-clipboard-option =
+    .label = Clipboard
+    .accesskey = C
+addressbar-locbar-openpage-option =
+    .label = Open tabs
+    .accesskey = O
+# Shortcuts refers to the shortcut tiles on the new tab page, previously known as top sites. Translation should be consistent.
+addressbar-locbar-shortcuts-option =
+    .label = Shortcuts
+    .accesskey = S
+addressbar-locbar-topsites-option =
+    .label = Top sites
+    .accesskey = T
+addressbar-locbar-engines-option =
+    .label = Search engines
+    .accesskey = a
+addressbar-locbar-quickactions-option =
+    .label = Quick actions
+    .accesskey = Q
+addressbar-locbar-showrecentsearches-option =
+    .label = Show recent searches
+    .accesskey = r
+addressbar-suggestions-settings = Change preferences for search engine suggestions
+addressbar-quickactions-learn-more = Learn more
+
+## Privacy Section - Content Blocking
+
+content-blocking-enhanced-tracking-protection = Enhanced Tracking Protection
+content-blocking-section-top-level-description = Trackers follow you around online to collect information about your browsing habits and interests. { -brand-short-name } blocks many of these trackers and other malicious scripts.
+content-blocking-learn-more = Learn more
+content-blocking-fpi-incompatibility-warning = You are using First Party Isolation (FPI), which overrides some of { -brand-short-name }’s cookie settings.
+# There is no need to translate "Resist Fingerprinting (RFP)". This is a
+# feature that can only be enabled via about:config, and it's not exposed to
+# standard users (e.g. via Settings).
+content-blocking-rfp-incompatibility-warning = You’re using Resist Fingerprinting (RFP), which replaces some of { -brand-short-name }’s fingerprinting protection settings. This might cause some sites to break.
+
+## These strings are used to define the different levels of
+## Enhanced Tracking Protection.
+
+# "Standard" in this case is an adjective, meaning "default" or "normal".
+enhanced-tracking-protection-setting-standard =
+    .label = Standard
+    .accesskey = d
+enhanced-tracking-protection-setting-strict =
+    .label = Strict
+    .accesskey = r
+enhanced-tracking-protection-setting-custom =
+    .label = Custom
+    .accesskey = C
+
+##
+
+content-blocking-etp-standard-desc = Balanced for protection and performance. Pages will load normally.
+content-blocking-etp-strict-desc = Stronger protection, but may cause some sites or content to break.
+content-blocking-etp-custom-desc = Choose which trackers and scripts to block.
+content-blocking-etp-blocking-desc = { -brand-short-name } blocks the following:
+content-blocking-private-windows = Tracking content in Private Windows
+content-blocking-cross-site-cookies-in-all-windows2 = Cross-site cookies in all windows
+content-blocking-cross-site-tracking-cookies = Cross-site tracking cookies
+content-blocking-all-cross-site-cookies-private-windows = Cross-site cookies in Private Windows
+content-blocking-cross-site-tracking-cookies-plus-isolate = Cross-site tracking cookies, and isolate remaining cookies
+content-blocking-social-media-trackers = Social media trackers
+content-blocking-all-cookies = All cookies
+content-blocking-unvisited-cookies = Cookies from unvisited sites
+content-blocking-all-windows-tracking-content = Tracking content in all windows
+content-blocking-all-cross-site-cookies = All cross-site cookies
+content-blocking-cryptominers = Cryptominers
+content-blocking-fingerprinters = Fingerprinters
+# The known fingerprinters are those that are known for collecting browser fingerprints from user devices. And
+# the suspected fingerprinters are those that we are uncertain about browser fingerprinting activities. But they could
+# possibly acquire browser fingerprints because of the behavior on accessing APIs that expose browser fingerprints.
+content-blocking-known-and-suspected-fingerprinters = Known and suspected fingerprinters
+
+# The tcp-rollout strings are no longer used for the rollout but for tcp-by-default in the standard section
+
+# "Contains" here means "isolates", "limits".
+content-blocking-etp-standard-tcp-rollout-description = Total Cookie Protection contains cookies to the site you’re on, so trackers can’t use them to follow you between sites.
+content-blocking-etp-standard-tcp-rollout-learn-more = Learn more
+content-blocking-etp-standard-tcp-title = Includes Total Cookie Protection, our most powerful privacy feature ever
+content-blocking-warning-title = Heads up!
+content-blocking-and-isolating-etp-warning-description-2 = This setting may cause some web sites to not display content or work correctly. If a site seems broken, you may want to turn off tracking protection for that site to load all content.
+content-blocking-warning-learn-how = Learn how
+content-blocking-reload-description = You will need to reload your tabs to apply these changes.
+content-blocking-reload-tabs-button =
+    .label = Reload All Tabs
+    .accesskey = R
+content-blocking-tracking-content-label =
+    .label = Tracking content
+    .accesskey = T
+content-blocking-tracking-protection-option-all-windows =
+    .label = In all windows
+    .accesskey = a
+content-blocking-option-private =
+    .label = Only in private windows
+    .accesskey = p
+content-blocking-tracking-protection-change-block-list = Change block list
+content-blocking-cookies-label =
+    .label = Cookies
+    .accesskey = C
+content-blocking-expand-section =
+    .tooltiptext = More information
+# Cryptomining refers to using scripts on websites that can use a computer’s resources to mine cryptocurrency without a user’s knowledge.
+content-blocking-cryptominers-label =
+    .label = Cryptominers
+    .accesskey = y
+# Browser fingerprinting is a method of tracking users by the configuration and settings information (their "digital fingerprint")
+# that is visible to websites they browse, rather than traditional tracking methods such as IP addresses and unique cookies.
+content-blocking-fingerprinters-label =
+    .label = Fingerprinters
+    .accesskey = F
+# Browser fingerprinting is a method of tracking users by the configuration and settings information (their "digital fingerprint")
+# that is visible to websites they browse, rather than traditional tracking methods such as IP addresses and unique cookies.
+#
+# The known fingerprinters are those that are known for collecting browser fingerprints from user devices.
+content-blocking-known-fingerprinters-label =
+    .label = Known fingerprinters
+    .accesskey = K
+# The suspected fingerprinters are those that we are uncertain about browser fingerprinting activities. But they could
+# possibly acquire browser fingerprints because of the behavior on accessing APIs that expose browser fingerprints.
+content-blocking-suspected-fingerprinters-label =
+    .label = Suspected fingerprinters
+    .accesskey = S
+
+## Privacy Section - Tracking
+
+tracking-manage-exceptions =
+    .label = Manage Exceptions…
+    .accesskey = x
+
+## Privacy Section - Permissions
+
+permissions-header = Permissions
+permissions-location = Location
+permissions-location-settings =
+    .label = Settings…
+    .accesskey = t
+permissions-xr = Virtual Reality
+permissions-xr-settings =
+    .label = Settings…
+    .accesskey = t
+permissions-camera = Camera
+permissions-camera-settings =
+    .label = Settings…
+    .accesskey = t
+permissions-microphone = Microphone
+permissions-microphone-settings =
+    .label = Settings…
+    .accesskey = t
+# Short form for "the act of choosing sound output devices and redirecting audio to the chosen devices".
+permissions-speaker = Speaker Selection
+permissions-speaker-settings =
+    .label = Settings…
+    .accesskey = t
+permissions-notification = Notifications
+permissions-notification-settings =
+    .label = Settings…
+    .accesskey = t
+permissions-notification-link = Learn more
+permissions-notification-pause =
+    .label = Pause notifications until { -brand-short-name } restarts
+    .accesskey = n
+permissions-autoplay = Autoplay
+permissions-autoplay-settings =
+    .label = Settings…
+    .accesskey = t
+permissions-block-popups =
+    .label = Block pop-up windows
+    .accesskey = B
+# "popup" is a misspelling that is more popular than the correct spelling of
+# "pop-up" so it's included as a search keyword, not displayed in the UI.
+permissions-block-popups-exceptions-button =
+    .label = Exceptions…
+    .accesskey = E
+    .searchkeywords = popups
+permissions-addon-install-warning =
+    .label = Warn you when web sites try to install add-ons
+    .accesskey = W
+permissions-addon-exceptions =
+    .label = Exceptions…
+    .accesskey = E
+
+## Privacy Section - Data Collection
+
+collection-header = { -brand-short-name } Data Collection and Use
+collection-header2 = { -brand-short-name } Data Collection and Use
+    .searchkeywords = telemetry
+collection-description = We strive to provide you with choices and collect only what we need to provide and improve { -brand-short-name } for everyone. We always ask permission before receiving personal information.
+collection-privacy-notice = Privacy Notice
+collection-health-report-telemetry-disabled = You’re no longer allowing { -vendor-short-name } to capture technical and interaction data. All past data will be deleted within 30 days.
+collection-health-report-telemetry-disabled-link = Learn more
+collection-health-report =
+    .label = Allow { -brand-short-name } to send technical and interaction data to { -vendor-short-name }
+    .accesskey = r
+collection-health-report-link = Learn more
+collection-studies =
+    .label = Allow { -brand-short-name } to install and run studies
+collection-studies-link = View { -brand-short-name } studies
+addon-recommendations =
+    .label = Allow { -brand-short-name } to make personalised extension recommendations
+addon-recommendations-link = Learn more
+# This message is displayed above disabled data sharing options in developer builds
+# or builds with no Telemetry support available.
+collection-health-report-disabled = Data reporting is disabled for this build configuration
+collection-backlogged-crash-reports-with-link = Allow { -brand-short-name } to send backlogged crash reports on your behalf <a data-l10n-name="crash-reports-link">Learn more</a>
+    .accesskey = c
+privacy-segmentation-section-header = New features that enhance your browsing
+privacy-segmentation-section-description = When we offer features that use your data to give you a more personal experience:
+privacy-segmentation-radio-off =
+    .label = Use { -brand-product-name } recommendations
+privacy-segmentation-radio-on =
+    .label = Show detailed information
+
+## Privacy Section - Security
+##
+## It is important that wording follows the guidelines outlined on this page:
+## https://developers.google.com/safe-browsing/developers_guide_v2#AcceptableUsage
+
+security-header = Security
+security-browsing-protection = Deceptive Content and Dangerous Software Protection
+security-enable-safe-browsing =
+    .label = Block dangerous and deceptive content
+    .accesskey = B
+security-enable-safe-browsing-link = Learn more
+security-block-downloads =
+    .label = Block dangerous downloads
+    .accesskey = d
+security-block-uncommon-software =
+    .label = Warn you about unwanted and uncommon software
+    .accesskey = C
+
+## Privacy Section - Certificates
+
+certs-header = Certificates
+certs-enable-ocsp =
+    .label = Query OCSP responder servers to confirm the current validity of certificates
+    .accesskey = Q
+certs-view =
+    .label = View Certificates…
+    .accesskey = C
+certs-devices =
+    .label = Security Devices…
+    .accesskey = D
+certs-thirdparty-toggle =
+    .label = Allow { -brand-short-name } to automatically trust third-party root certificates you install
+    .accesskey = t
+space-alert-over-5gb-settings-button =
+    .label = Open Settings
+    .accesskey = O
+space-alert-over-5gb-message2 = <strong>{ -brand-short-name } is running out of disk space.</strong> Web site contents may not display properly. You can clear stored data in Settings > Privacy & Security > Cookies and Site Data.
+space-alert-under-5gb-message2 = <strong>{ -brand-short-name } is running out of disk space.</strong> Web site contents may not display properly. Visit “Learn more” to optimise your disk usage for better browsing experience.
+
+## Privacy Section - HTTPS-Only
+
+httpsonly-header = HTTPS-Only Mode
+httpsonly-description = HTTPS provides a secure, encrypted connection between { -brand-short-name } and the web sites you visit. Most web sites support HTTPS, and if HTTPS-Only Mode is enabled, then { -brand-short-name } will upgrade all connections to HTTPS.
+httpsonly-learn-more = Learn more
+httpsonly-radio-enabled =
+    .label = Enable HTTPS-Only Mode in all windows
+httpsonly-radio-enabled-pbm =
+    .label = Enable HTTPS-Only Mode in private windows only
+httpsonly-radio-disabled =
+    .label = Don’t enable HTTPS-Only Mode
+
+## DoH Section
+
+preferences-doh-header = DNS over HTTPS
+preferences-doh-description = Domain Name System (DNS) over HTTPS sends your request for a domain name through an encrypted connection, creating a secure DNS and making it harder for others to see which web site you’re about to access.
+preferences-doh-description2 = Domain Name System (DNS) over HTTPS sends your request for a domain name through an encrypted connection, providing a secure DNS and making it harder for others to see which web site you’re about to access.
+# Variables:
+#   $status (string) - The status of the DoH connection
+preferences-doh-status = Status: { $status }
+# Variables:
+#   $name (string) - The name of the DNS over HTTPS resolver. If a custom resolver is used, the name will be the domain of the URL.
+preferences-doh-resolver = Provider: { $name }
+# This is displayed instead of $name in preferences-doh-resolver
+# when the DoH URL is not a valid URL
+preferences-doh-bad-url = Invalid URL
+preferences-doh-steering-status = Using local provider
+preferences-doh-status-active = Active
+preferences-doh-status-disabled = Off
+# Variables:
+#   $reason (string) - A string representation of the reason DoH is not active. For example NS_ERROR_UNKNOWN_HOST or TRR_RCODE_FAIL.
+preferences-doh-status-not-active = Not active ({ $reason })
+preferences-doh-group-message = Enable secure DNS using:
+preferences-doh-group-message2 = Enable DNS over HTTPS using:
+preferences-doh-expand-section =
+    .tooltiptext = More information
+preferences-doh-setting-default =
+    .label = Default Protection
+    .accesskey = D
+preferences-doh-default-desc = { -brand-short-name } decides when to use secure DNS to protect your privacy.
+preferences-doh-default-detailed-desc-1 = Use secure DNS in regions where it’s available
+preferences-doh-default-detailed-desc-2 = Use your default DNS resolver if there is a problem with the secure DNS provider
+preferences-doh-default-detailed-desc-3 = Use a local provider, if possible
+preferences-doh-default-detailed-desc-4 = Turn off when VPN, parental control, or enterprise policies are active
+preferences-doh-default-detailed-desc-5 = Turn off when a network tells { -brand-short-name } it shouldn’t use secure DNS
+preferences-doh-setting-enabled =
+    .label = Increased Protection
+    .accesskey = I
+preferences-doh-enabled-desc = You control when to use secure DNS and choose your provider.
+preferences-doh-enabled-detailed-desc-1 = Use the provider you select
+preferences-doh-enabled-detailed-desc-2 = Only use your default DNS resolver if there is a problem with secure DNS
+preferences-doh-setting-strict =
+    .label = Max Protection
+    .accesskey = M
+preferences-doh-strict-desc = { -brand-short-name } will always use secure DNS. You’ll see a security risk warning before we use your system DNS.
+preferences-doh-strict-detailed-desc-1 = Only use the provider you select
+preferences-doh-strict-detailed-desc-2 = Always warn if secure DNS isn’t available
+preferences-doh-strict-detailed-desc-3 = If secure DNS is not available sites will not load or function properly
+preferences-doh-setting-off =
+    .label = Off
+    .accesskey = O
+preferences-doh-off-desc = Use your default DNS resolver
+preferences-doh-checkbox-warn =
+    .label = Warn if a third party actively prevents secure DNS
+    .accesskey = W
+preferences-doh-select-resolver = Choose provider:
+preferences-doh-exceptions-description = { -brand-short-name } won’t use secure DNS on these sites
+preferences-doh-manage-exceptions =
+    .label = Manage Exceptions…
+    .accesskey = x
+
+## The following strings are used in the Download section of settings
+
+desktop-folder-name = Desktop
+downloads-folder-name = Downloads
+choose-download-folder-title = Choose Download Folder:
diff --git a/l10n-en-GB/browser/browser/preferences/selectBookmark.ftl b/l10n-en-GB/browser/browser/preferences/selectBookmark.ftl
new file mode 100644
index 0000000000..e0d15bff79
--- /dev/null
+++ b/l10n-en-GB/browser/browser/preferences/selectBookmark.ftl
@@ -0,0 +1,9 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+select-bookmark-window2 =
+    .title = Set Home Page
+    .style = min-width: 32em;
+
+select-bookmark-desc = Choose a Bookmark to be your Home Page. If you choose a folder, the Bookmarks in that folder will be opened in Tabs.
diff --git a/l10n-en-GB/browser/browser/preferences/siteDataSettings.ftl b/l10n-en-GB/browser/browser/preferences/siteDataSettings.ftl
new file mode 100644
index 0000000000..712310a42d
--- /dev/null
+++ b/l10n-en-GB/browser/browser/preferences/siteDataSettings.ftl
@@ -0,0 +1,67 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+## Settings
+
+site-data-settings-window =
+    .title = Manage Cookies and Site Data
+
+site-data-settings-description = The following web sites store cookies and site data on your computer. { -brand-short-name } keeps data from web sites with persistent storage until you delete it, and deletes data from web sites with non-persistent storage as space is needed.
+
+site-data-search-textbox =
+    .placeholder = Search web sites
+    .accesskey = S
+
+site-data-column-host =
+    .label = Site
+site-data-column-cookies =
+    .label = Cookies
+site-data-column-storage =
+    .label = Storage
+site-data-column-last-used =
+    .label = Last Used
+
+# This label is used in the "Host" column for local files, which have no host.
+site-data-local-file-host = (local file)
+
+site-data-remove-selected =
+    .label = Remove Selected
+    .accesskey = r
+
+site-data-settings-dialog =
+    .buttonlabelaccept = Save Changes
+    .buttonaccesskeyaccept = a
+
+# Variables:
+#   $value (Number) - Value of the unit (for example: 4.6, 500)
+#   $unit (String) - Name of the unit (for example: "bytes", "KB")
+site-storage-usage =
+    .value = { $value } { $unit }
+site-storage-persistent =
+    .value = { site-storage-usage.value } (Persistent)
+
+site-data-remove-all =
+    .label = Remove All
+    .accesskey = e
+
+site-data-remove-shown =
+    .label = Remove All Shown
+    .accesskey = e
+
+## Removing
+
+site-data-removing-dialog =
+    .title = { site-data-removing-header }
+    .buttonlabelaccept = Remove
+
+site-data-removing-header = Removing Cookies and Site Data
+
+site-data-removing-desc = Removing cookies and site data may log you out of web sites. Are you sure you want to make the changes?
+
+# Variables:
+#   $baseDomain (String) - The single domain for which data is being removed
+site-data-removing-single-desc = Removing cookies and site data may log you out of web sites. Are you sure you want to remove cookies and site data for <strong>{ $baseDomain }</strong>?
+
+site-data-removing-table = Cookies and site data for the following web sites will be removed
diff --git a/l10n-en-GB/browser/browser/preferences/translation.ftl b/l10n-en-GB/browser/browser/preferences/translation.ftl
new file mode 100644
index 0000000000..2fac2d05b3
--- /dev/null
+++ b/l10n-en-GB/browser/browser/preferences/translation.ftl
@@ -0,0 +1,40 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+translation-window2 =
+    .title = Exceptions - Translation
+    .style = min-width: 36em
+
+translation-close-key =
+    .key = w
+
+translation-languages-disabled-desc = Translation will not be offered for the following languages
+
+translation-languages-column =
+    .label = Languages
+
+translation-languages-button-remove =
+    .label = Remove Language
+    .accesskey = R
+
+translation-languages-button-remove-all =
+    .label = Remove All Languages
+    .accesskey = e
+
+translation-sites-disabled-desc = Translation will not be offered for the following sites
+
+translation-sites-column =
+    .label = Web Sites
+
+translation-sites-button-remove =
+    .label = Remove Site
+    .accesskey = S
+
+translation-sites-button-remove-all =
+    .label = Remove All Sites
+    .accesskey = i
+
+translation-dialog =
+    .buttonlabelaccept = Close
+    .buttonaccesskeyaccept = C
diff --git a/l10n-en-GB/browser/browser/profile/default-bookmarks.ftl b/l10n-en-GB/browser/browser/profile/default-bookmarks.ftl
new file mode 100644
index 0000000000..d4449e48fa
--- /dev/null
+++ b/l10n-en-GB/browser/browser/profile/default-bookmarks.ftl
@@ -0,0 +1,53 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+# This file intentionally uses hard-coded brand names instead of Fluent terms.
+# This approach minimizes issues across multiple release channels and rebranded
+# versions.
+
+default-bookmarks-title = Bookmarks
+default-bookmarks-heading = Bookmarks
+
+default-bookmarks-toolbarfolder = Bookmarks Toolbar Folder
+default-bookmarks-toolbarfolder-description = Add bookmarks to this folder to see them displayed on the Bookmarks Toolbar
+
+# link title for https://www.mozilla.org/firefox/central/
+default-bookmarks-getting-started = Getting Started
+
+# Firefox links folder name
+default-bookmarks-firefox-heading = Mozilla Firefox
+
+# link title for https://www.mozilla.org/firefox/help/
+default-bookmarks-firefox-get-help = Get Help
+
+# link title for https://www.mozilla.org/firefox/customize/
+default-bookmarks-firefox-customize = Customise Firefox
+
+# link title for https://www.mozilla.org/contribute/
+default-bookmarks-firefox-community = Get Involved
+
+# link title for https://www.mozilla.org/about/
+default-bookmarks-firefox-about = About Us
+
+# Firefox Nightly links folder name
+default-bookmarks-nightly-heading = Firefox Nightly Resources
+
+# Nightly builds only, link title for https://blog.nightly.mozilla.org/
+default-bookmarks-nightly-blog = Firefox Nightly blog
+
+# Nightly builds only, link title for https://bugzilla.mozilla.org/
+default-bookmarks-bugzilla = Mozilla Bug Tracker
+
+# Nightly builds only, link title for https://developer.mozilla.org/
+default-bookmarks-mdn = Mozilla Developer Network
+
+# Nightly builds only, link title for https://addons.mozilla.org/firefox/addon/nightly-tester-tools/
+default-bookmarks-nightly-tester-tools = Nightly Tester Tools
+
+# Nightly builds only, link title for about:crashes
+default-bookmarks-crashes = All your crashes
+
+# Nightly builds only, link title for https://planet.mozilla.org/
+default-bookmarks-planet = Planet Mozilla
diff --git a/l10n-en-GB/browser/browser/protections.ftl b/l10n-en-GB/browser/browser/protections.ftl
new file mode 100644
index 0000000000..dc6bb1c4db
--- /dev/null
+++ b/l10n-en-GB/browser/browser/protections.ftl
@@ -0,0 +1,233 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# Variables:
+#   $count (Number) - Number of tracking events blocked.
+graph-week-summary =
+    { $count ->
+        [one] { -brand-short-name } blocked  { $count } tracker over the past week
+       *[other] { -brand-short-name } blocked  { $count } trackers over the past week
+    }
+
+# Variables:
+#   $count (Number) - Number of tracking events blocked.
+#   $earliestDate (Number) - Unix timestamp in ms, representing a date. The
+# earliest date recorded in the database.
+graph-total-tracker-summary =
+    { $count ->
+        [one] <b>{ $count }</b> tracker blocked since { DATETIME($earliestDate, day: "numeric", month: "long", year: "numeric") }
+       *[other] <b>{ $count }</b> trackers blocked since { DATETIME($earliestDate, day: "numeric", month: "long", year: "numeric") }
+    }
+
+# Text displayed instead of the graph when in Private Mode
+graph-private-window = { -brand-short-name } continues to  block trackers in Private Windows, but does not keep a record of what was blocked.
+# Weekly summary of the graph when the graph is empty in Private Mode
+graph-week-summary-private-window = Trackers { -brand-short-name } blocked this week
+
+protection-report-webpage-title = Protections Dashboard
+protection-report-page-content-title = Protections Dashboard
+# This message shows when all privacy protections are turned off, which is why we use the word "can", Firefox is able to protect your privacy, but it is currently not.
+protection-report-page-summary = { -brand-short-name } can protect your privacy behind the scenes while you browse. This is a personalised summary of those protections, including tools to take control of your online security.
+# This message shows when at least some protections are turned on, we are more assertive compared to the message above, Firefox is actively protecting you.
+protection-report-page-summary-default = { -brand-short-name } protects your privacy behind the scenes while you browse. This is a personalised summary of those protections, including tools to take control of your online security.
+
+protection-report-settings-link = Manage your privacy and security settings
+
+etp-card-title-always = Enhanced Tracking Protection: Always On
+etp-card-title-custom-not-blocking = Enhanced Tracking Protection: OFF
+etp-card-content-description = { -brand-short-name } automatically stops companies from secretly following you around the web.
+protection-report-etp-card-content-custom-not-blocking = All protections are currently turned off. Choose which trackers to block by managing your { -brand-short-name } protections settings.
+protection-report-manage-protections = Manage settings
+
+# This string is used to label the X axis of a graph. Other days of the week are generated via Intl.DateTimeFormat,
+# capitalization for this string should match the output for your locale.
+graph-today = Today
+
+# This string is used to describe the graph for screenreader users.
+graph-legend-description = A graph containing the total number of each type of tracker blocked this week.
+
+social-tab-title = Social Media Trackers
+social-tab-contant = Social networks place trackers on other web sites to follow what you do, see, and watch online. This allows social media companies to learn more about you beyond what you share on your social media profiles. <a data-l10n-name="learn-more-link">Learn more</a>
+
+cookie-tab-title = Cross-Site Tracking Cookies
+cookie-tab-content = These cookies follow you from site to site to gather data about what you do online. They are set by third parties such as advertisers and analytics companies. Blocking cross-site tracking cookies reduces the number of ads that follow you around. <a data-l10n-name="learn-more-link">Learn more</a>
+
+tracker-tab-title = Tracking Content
+tracker-tab-description = Web sites may load external ads, videos, and other content with tracking code. Blocking tracking content can help sites load faster, but some buttons, forms, and login fields might not work. <a data-l10n-name="learn-more-link">Learn more</a>
+
+fingerprinter-tab-title = Fingerprinters
+fingerprinter-tab-content = Fingerprinters collect settings from your browser and computer to create a profile of you. Using this digital fingerprint, they can track you across different web sites. <a data-l10n-name="learn-more-link">Learn more</a>
+
+cryptominer-tab-title = Cryptominers
+cryptominer-tab-content = Cryptominers use your system’s computing power to mine digital money. Cryptomining scripts drain your battery, slow down your computer, and can increase your energy bill. <a data-l10n-name="learn-more-link">Learn more</a>
+
+protections-close-button2 =
+    .aria-label = Close
+    .title = Close
+
+mobile-app-title = Block ad trackers across more devices
+mobile-app-card-content = Use the mobile browser with built-in protection against ad tracking.
+mobile-app-links = { -brand-product-name } Browser for <a data-l10n-name="android-mobile-inline-link">Android</a> and <a data-l10n-name="ios-mobile-inline-link">iOS</a>
+
+lockwise-title = Never forget a password again
+passwords-title-logged-in = Manage your passwords
+passwords-header-content = { -brand-product-name } securely stores your passwords in your browser.
+lockwise-header-content-logged-in = Securely store and synchronise your passwords to all your devices.
+protection-report-passwords-save-passwords-button = Save passwords
+    .title = Save passwords
+protection-report-passwords-manage-passwords-button = Manage passwords
+    .title = Manage passwords
+
+
+# Variables:
+# $count (Number) - Number of passwords exposed in data breaches.
+lockwise-scanned-text-breached-logins =
+    { $count ->
+        [one] 1 password may have been exposed in a data breach.
+       *[other] { $count } passwords may have been exposed in a data breach.
+    }
+
+# While English doesn't use the number in the plural form, you can add $count to your language
+# if needed for grammatical reasons.
+# Variables:
+# $count (Number) - Number of passwords stored in Lockwise.
+lockwise-scanned-text-no-breached-logins =
+    { $count ->
+        [one] 1 password stored securely.
+       *[other] Your passwords are being stored securely.
+    }
+lockwise-how-it-works-link = How it works
+
+monitor-title = Look out for data breaches
+monitor-link = How it works
+monitor-header-content-no-account = Check { -monitor-brand-name } to see if you’ve been part of a known data breach, and get alerts about new breaches.
+monitor-header-content-signed-in = { -monitor-brand-name } warns you if your info has appeared in a known data breach.
+monitor-sign-up-link = Sign up for breach alerts
+    .title = Sign up for breach alerts on { -monitor-brand-name }
+auto-scan = Automatically scanned today
+
+monitor-emails-tooltip =
+    .title = View monitored email addresses on { -monitor-brand-short-name }
+monitor-breaches-tooltip =
+    .title = View known data breaches on { -monitor-brand-short-name }
+monitor-passwords-tooltip =
+    .title = View exposed passwords on { -monitor-brand-short-name }
+
+# This string is displayed after a large numeral that indicates the total number
+# of email addresses being monitored. Don’t add $count to
+# your localization, because it would result in the number showing twice.
+info-monitored-emails =
+    { $count ->
+        [one] Email address being monitored
+       *[other] Email addresses being monitored
+    }
+
+# This string is displayed after a large numeral that indicates the total number
+# of known data breaches. Don’t add $count to
+# your localization, because it would result in the number showing twice.
+info-known-breaches-found =
+    { $count ->
+        [one] Known data breach has exposed your information
+       *[other] Known data breaches have exposed your information
+    }
+
+# This string is displayed after a large numeral that indicates the total number
+# of known data breaches that are marked as resolved by the user. Don’t add $count
+# to your localization, because it would result in the number showing twice.
+info-known-breaches-resolved =
+    { $count ->
+        [one] Known data breach marked as resolved
+       *[other] Known data breaches marked as resolved
+    }
+
+# This string is displayed after a large numeral that indicates the total number
+# of exposed passwords. Don’t add $count to
+# your localization, because it would result in the number showing twice.
+info-exposed-passwords-found =
+    { $count ->
+        [one] Password exposed across all breaches
+       *[other] Passwords exposed across all breaches
+    }
+
+# This string is displayed after a large numeral that indicates the total number
+# of exposed passwords that are marked as resolved by the user. Don’t add $count
+# to your localization, because it would result in the number showing twice.
+info-exposed-passwords-resolved =
+    { $count ->
+        [one] Password exposed in unresolved breaches
+       *[other] Passwords exposed in unresolved breaches
+    }
+
+monitor-no-breaches-title = Good news!
+monitor-no-breaches-description = You have no known breaches. If that changes, we will let you know.
+monitor-view-report-link = View report
+    .title = Resolve breaches on { -monitor-brand-short-name }
+monitor-breaches-unresolved-title = Resolve your breaches
+monitor-breaches-unresolved-description = After reviewing breach details and taking steps to protect your info, you can mark breaches as resolved.
+monitor-manage-breaches-link = Manage breaches
+    .title = Manage breaches on { -monitor-brand-short-name }
+monitor-breaches-resolved-title = Nice! You’ve resolved all known breaches.
+monitor-breaches-resolved-description = If your email appears in any new breaches, we will let you know.
+
+# Variables:
+# $numBreachesResolved (Number) - Number of breaches marked as resolved by the user on Monitor.
+# $numBreaches (Number) - Number of breaches in which a user's data was involved, detected by Monitor.
+monitor-partial-breaches-title =
+    { $numBreaches ->
+       *[other] { $numBreachesResolved } out of { $numBreaches } breaches marked as resolved
+    }
+
+# Variables:
+# $percentageResolved (Number) - Percentage of breaches marked as resolved by a user on Monitor.
+monitor-partial-breaches-percentage = { $percentageResolved }% complete
+
+monitor-partial-breaches-motivation-title-start = Great start!
+monitor-partial-breaches-motivation-title-middle = Keep it up!
+monitor-partial-breaches-motivation-title-end = Almost done! Keep it up.
+monitor-partial-breaches-motivation-description = Resolve the rest of your breaches on { -monitor-brand-short-name }.
+monitor-resolve-breaches-link = Resolve breaches
+    .title = Resolve breaches on { -monitor-brand-short-name }
+
+## The title attribute is used to display the type of protection.
+## The aria-label is spoken by screen readers to make the visual graph accessible to blind users.
+##
+## Variables:
+##   $count (Number) - Number of specific trackers
+##   $percentage (Number) - Percentage this type of tracker contributes to the whole graph
+
+bar-tooltip-social =
+    .title = Social Media Trackers
+    .aria-label =
+        { $count ->
+            [one] { $count } social media tracker ({ $percentage }%)
+           *[other] { $count } social media trackers ({ $percentage }%)
+        }
+bar-tooltip-cookie =
+    .title = Cross-Site Tracking Cookies
+    .aria-label =
+        { $count ->
+            [one] { $count } cross-site tracking cookie ({ $percentage }%)
+           *[other] { $count } cross-site tracking cookies ({ $percentage }%)
+        }
+bar-tooltip-tracker =
+    .title = Tracking Content
+    .aria-label =
+        { $count ->
+            [one] { $count } tracking content ({ $percentage }%)
+           *[other] { $count } tracking content ({ $percentage }%)
+        }
+bar-tooltip-fingerprinter =
+    .title = Fingerprinters
+    .aria-label =
+        { $count ->
+            [one] { $count } fingerprinter ({ $percentage }%)
+           *[other] { $count } fingerprinters ({ $percentage }%)
+        }
+bar-tooltip-cryptominer =
+    .title = Cryptominers
+    .aria-label =
+        { $count ->
+            [one] { $count } cryptominer ({ $percentage }%)
+           *[other] { $count } cryptominers ({ $percentage }%)
+        }
diff --git a/l10n-en-GB/browser/browser/protectionsPanel.ftl b/l10n-en-GB/browser/browser/protectionsPanel.ftl
new file mode 100644
index 0000000000..1eb18929c4
--- /dev/null
+++ b/l10n-en-GB/browser/browser/protectionsPanel.ftl
@@ -0,0 +1,164 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+protections-panel-sendreportview-error = There was an error sending the report. Please try again later.
+# A link shown when ETP is disabled for a site. Opens the breakage report subview when clicked.
+protections-panel-sitefixedsendreport-label = Site fixed? Send report
+
+## These strings are used to define the different levels of
+## Enhanced Tracking Protection.
+
+protections-popup-footer-protection-label-strict = Strict
+    .label = Strict
+protections-popup-footer-protection-label-custom = Custom
+    .label = Custom
+protections-popup-footer-protection-label-standard = Standard
+    .label = Standard
+
+##
+
+# The text a screen reader speaks when focused on the info button.
+protections-panel-etp-more-info =
+    .aria-label = More information about Enhanced Tracking Protection
+protections-panel-etp-on-header = Enhanced Tracking Protection is ON for this site
+protections-panel-etp-off-header = Enhanced Tracking Protection is OFF for this site
+
+## Text for the toggles shown when ETP is enabled/disabled for a given site.
+## .description is transferred into a separate paragraph by the moz-toggle
+## custom element code.
+##   $host (String): the hostname of the site that is being displayed.
+
+protections-panel-etp-on-toggle =
+    .label = Enhanced Tracking Protection
+    .description = On for this site
+    .aria-label = Disable protections for { $host }
+protections-panel-etp-off-toggle =
+    .label = Enhanced Tracking Protection
+    .description = Off for this site
+    .aria-label = Enable protections for { $host }
+protections-panel-etp-toggle-on =
+    .label = Enhanced Tracking Protection
+    .description = On for this site
+    .aria-label = Enhanced Tracking Protection: On for { $host }
+protections-panel-etp-toggle-off =
+    .label = Enhanced Tracking Protection
+    .description = Off for this site
+    .aria-label = Enhanced Tracking Protection: Off for { $host }
+# The link to be clicked to open the sub-panel view
+protections-panel-site-not-working = Site not working?
+# The heading/title of the sub-panel view
+protections-panel-site-not-working-view =
+    .title = Site Not Working?
+
+## The "Allowed" header also includes a "Why?" link that, when hovered, shows
+## a tooltip explaining why these items were not blocked in the page.
+
+protections-panel-not-blocking-why-label = Why?
+protections-panel-not-blocking-why-etp-on-tooltip = Blocking these could break elements of some web sites. Without trackers, some buttons, forms, and login fields might not work.
+protections-panel-not-blocking-why-etp-off-tooltip = All trackers on this site have been loaded because protections are turned off.
+protections-panel-not-blocking-why-etp-on-tooltip-label =
+    .label = Blocking these could break elements of some web sites. Without trackers, some buttons, forms, and login fields might not work.
+protections-panel-not-blocking-why-etp-off-tooltip-label =
+    .label = All trackers on this site have been loaded because protections are turned off.
+
+##
+
+protections-panel-no-trackers-found = No trackers known to { -brand-short-name } were detected on this page.
+protections-panel-content-blocking-tracking-protection = Tracking Content
+protections-panel-content-blocking-socialblock = Social Media Trackers
+protections-panel-content-blocking-cryptominers-label = Cryptominers
+protections-panel-content-blocking-fingerprinters-label = Fingerprinters
+
+## In the protections panel, Content Blocking category items are in three sections:
+##   "Blocked" for categories being blocked in the current page,
+##   "Allowed" for categories detected but not blocked in the current page, and
+##   "None Detected" for categories not detected in the current page.
+##   These strings are used in the header labels of each of these sections.
+
+protections-panel-blocking-label = Blocked
+protections-panel-not-blocking-label = Allowed
+protections-panel-not-found-label = None Detected
+
+##
+
+protections-panel-settings-label = Protection settings
+protections-panel-protectionsdashboard-label = Protections dashboard
+
+## In the Site Not Working? view, we suggest turning off protections if
+## the user is experiencing issues with any of a variety of functionality.
+
+# The header of the list
+protections-panel-site-not-working-view-header = Turn off protections if you’re having issues with:
+# The list items, shown in a <ul>
+protections-panel-site-not-working-view-issue-list-login-fields = Login fields
+protections-panel-site-not-working-view-issue-list-forms = Forms
+protections-panel-site-not-working-view-issue-list-payments = Payments
+protections-panel-site-not-working-view-issue-list-comments = Comments
+protections-panel-site-not-working-view-issue-list-videos = Videos
+protections-panel-site-not-working-view-issue-list-fonts = Fonts
+protections-panel-site-not-working-view-send-report = Send a report
+
+##
+
+protections-panel-cross-site-tracking-cookies = These cookies follow you from site to site to gather data about what you do online. They are set by third parties such as advertisers and analytics companies.
+protections-panel-cryptominers = Cryptominers use your system’s computing power to mine digital money. Cryptomining scripts drain your battery, slow down your computer, and can increase your energy bill.
+protections-panel-fingerprinters = Fingerprinters collect settings from your browser and computer to create a profile of you. Using this digital fingerprint, they can track you across different web sites.
+protections-panel-tracking-content = Web sites may load external ads, videos, and other content with tracking code. Blocking tracking content can help sites load faster, but some buttons, forms, and login fields might not work.
+protections-panel-social-media-trackers = Social networks place trackers on other web sites to follow what you do, see, and watch online. This allows social media companies to learn more about you beyond what you share on your social media profiles.
+protections-panel-description-shim-allowed = Some trackers marked below have been partially unblocked on this page because you interacted with them.
+protections-panel-description-shim-allowed-learn-more = Learn more
+protections-panel-shim-allowed-indicator =
+    .tooltiptext = Tracker partially unblocked
+protections-panel-content-blocking-manage-settings =
+    .label = Manage protection settings
+    .accesskey = M
+protections-panel-content-blocking-breakage-report-view =
+    .title = Report a Broken Site
+protections-panel-content-blocking-breakage-report-view-description = Blocking certain trackers can cause problems with some web sites. Reporting these problems helps make { -brand-short-name } better for everyone. Sending this report will send a URL and information about your browser settings to Mozilla. <label data-l10n-name="learn-more">Learn more</label>
+protections-panel-content-blocking-breakage-report-view-description2 = Blocking certain trackers can cause problems with some web sites. Reporting these problems helps make { -brand-short-name } better for everyone. Sending this report will send a URL and information about your browser settings to { -vendor-short-name }.
+protections-panel-content-blocking-breakage-report-view-collection-url = URL
+protections-panel-content-blocking-breakage-report-view-collection-url-label =
+    .aria-label = URL
+protections-panel-content-blocking-breakage-report-view-collection-comments = Optional: Describe the problem
+protections-panel-content-blocking-breakage-report-view-collection-comments-label =
+    .aria-label = Optional: Describe the problem
+protections-panel-content-blocking-breakage-report-view-cancel =
+    .label = Cancel
+protections-panel-content-blocking-breakage-report-view-send-report =
+    .label = Send Report
+
+# Cookie Banner Handling
+
+protections-panel-cookie-banner-handling-header = Cookie Banner Reduction
+protections-panel-cookie-banner-blocker-header = Cookie Banner Blocker
+protections-panel-cookie-banner-handling-enabled = On for this site
+protections-panel-cookie-banner-handling-disabled = Off for this site
+protections-panel-cookie-banner-handling-undetected = Site currently not supported
+protections-panel-cookie-banner-view-title =
+    .title = Cookie Banner Reduction
+# Variables
+#  $host (String): the hostname of the site that is being displayed.
+protections-panel-cookie-banner-view-turn-off-for-site = Turn off Cookie Banner Reduction for { $host }?
+protections-panel-cookie-banner-view-turn-on-for-site = Turn on Cookie Banner Reduction for this site?
+protections-panel-cookie-banner-blocker-view-title =
+    .title = Cookie Banner Blocker
+# Variables
+#  $host (String): the hostname of the site that is being displayed.
+protections-panel-cookie-banner-blocker-view-turn-off-for-site = Turn off Cookie Banner Blocker for { $host }?
+protections-panel-cookie-banner-blocker-view-turn-on-for-site = Turn on Cookie Banner Blocker for this site?
+protections-panel-cookie-banner-view-cookie-clear-warning = { -brand-short-name } will clear this site’s cookies and refresh the page. Clearing all cookies may sign you out or empty shopping carts.
+protections-panel-cookie-banner-view-turn-on-description = { -brand-short-name } tries to automatically reject all cookie requests on supported sites.
+protections-panel-cookie-banner-blocker-view-turn-on-description = Turn on and { -brand-short-name } will try to automatically refuse cookie banners on this site.
+protections-panel-cookie-banner-view-cancel = Cancel
+protections-panel-cookie-banner-view-turn-off = Turn Off
+protections-panel-cookie-banner-view-turn-on = Turn On
+protections-panel-cookie-banner-view-cancel-label =
+    .label = Cancel
+protections-panel-cookie-banner-view-turn-off-label =
+    .label = Turn Off
+protections-panel-cookie-banner-view-turn-on-label =
+    .label = Turn On
+protections-panel-report-broken-site =
+    .label = Report broken site
+    .title = Report broken site
diff --git a/l10n-en-GB/browser/browser/recentlyClosed.ftl b/l10n-en-GB/browser/browser/recentlyClosed.ftl
new file mode 100644
index 0000000000..3fbc23530b
--- /dev/null
+++ b/l10n-en-GB/browser/browser/recentlyClosed.ftl
@@ -0,0 +1,30 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+## These strings are used in the main menu,
+## and should follow the same capitalization (title case for English).
+## Check menubar.ftl for reference.
+
+recently-closed-menu-reopen-all-tabs = Reopen All Tabs
+recently-closed-menu-reopen-all-windows = Reopen All Windows
+
+## These strings are used in the app menu,
+## and should follow the same capitalization (sentence case for English).
+## Check appmenu.ftl for reference.
+
+recently-closed-panel-reopen-all-tabs = Reopen all tabs
+recently-closed-panel-reopen-all-windows = Reopen all windows
+
+##
+
+# Variables:
+#   $tabCount (Number): Number of other tabs
+#   $winTitle (String): Window title
+recently-closed-undo-close-window-label =
+    { $tabCount ->
+        [0] { $winTitle }
+        [one] { $winTitle } (and { $tabCount } other tab)
+       *[other] { $winTitle } (and { $tabCount } other tabs)
+    }
diff --git a/l10n-en-GB/browser/browser/reportBrokenSite.ftl b/l10n-en-GB/browser/browser/reportBrokenSite.ftl
new file mode 100644
index 0000000000..8b5973c149
--- /dev/null
+++ b/l10n-en-GB/browser/browser/reportBrokenSite.ftl
@@ -0,0 +1,43 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+report-broken-site-mainview-title = Report broken site
+report-broken-site-panel-header =
+    .label = Report broken site
+    .title = Report broken site
+report-broken-site-panel-intro = Help make { -brand-product-name } better for everyone. { -vendor-short-name } uses the info you send to fix web site problems.
+report-broken-site-panel-url = URL
+report-broken-site-panel-reason-label = What’s broken?
+report-broken-site-panel-reason-optional-label = What’s broken? (optional)
+report-broken-site-panel-reason-choose =
+    .label = Choose reason
+report-broken-site-panel-reason-slow =
+    .label = Site slow or not working
+report-broken-site-panel-reason-media =
+    .label = Images or videos
+report-broken-site-panel-reason-content =
+    .label = Buttons, links, and other content
+report-broken-site-panel-reason-account =
+    .label = Sign-in or Sign-out
+report-broken-site-panel-reason-adblockers =
+    .label = Ad blockers
+report-broken-site-panel-reason-other =
+    .label = Something else
+report-broken-site-panel-description-label = Describe the problem
+report-broken-site-panel-description-optional-label = Describe the problem (optional)
+report-broken-site-panel-send-more-info-link = Send more info
+report-broken-site-panel-button-cancel =
+    .label = Cancel
+report-broken-site-panel-button-okay =
+    .label = Okay
+report-broken-site-panel-button-send =
+    .label = Send
+report-broken-site-panel-unspecified = Unspecified
+report-broken-site-panel-report-sent-label = Your report has been sent
+report-broken-site-panel-report-sent-header =
+    .label = Your report has been sent
+    .title = Your report has been sent
+report-broken-site-panel-report-sent-text = Thank you for helping { -brand-product-name } make the web more open, accessible, and better for everyone.
+report-broken-site-panel-invalid-url-label = Please enter a valid URL
+report-broken-site-panel-missing-reason-label = Please choose a reason
diff --git a/l10n-en-GB/browser/browser/safeMode.ftl b/l10n-en-GB/browser/browser/safeMode.ftl
new file mode 100644
index 0000000000..192b8f3ef9
--- /dev/null
+++ b/l10n-en-GB/browser/browser/safeMode.ftl
@@ -0,0 +1,15 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+troubleshoot-mode-window =
+    .title = Open { -brand-short-name } in Troubleshoot Mode?
+    .style = max-width: 400px
+start-troubleshoot-mode =
+    .label = Open
+refresh-profile =
+    .label = Refresh { -brand-short-name }
+troubleshoot-mode-description = Use this special mode of { -brand-short-name } to diagnose issues. Your extensions and customisations will be temporarily disabled.
+skip-troubleshoot-refresh-profile = You can also skip troubleshooting and refresh { -brand-short-name }, instead.
+# Shown on the safe mode dialog after multiple startup crashes.
+auto-safe-mode-description = { -brand-short-name } closed unexpectedly while starting. This might be caused by add-ons or other problems. You can try to resolve the problem by troubleshooting in Safe Mode.
diff --git a/l10n-en-GB/browser/browser/safebrowsing/blockedSite.ftl b/l10n-en-GB/browser/browser/safebrowsing/blockedSite.ftl
new file mode 100644
index 0000000000..d6f93a6e29
--- /dev/null
+++ b/l10n-en-GB/browser/browser/safebrowsing/blockedSite.ftl
@@ -0,0 +1,58 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+safeb-blocked-phishing-page-title = Deceptive site ahead
+safeb-blocked-malware-page-title = Visiting this web site may harm your computer
+safeb-blocked-unwanted-page-title = The site ahead may contain harmful programs
+safeb-blocked-harmful-page-title = The site ahead may contain malware
+safeb-blocked-phishing-page-short-desc = { -brand-short-name } blocked this page because it may trick you into doing something dangerous like installing software or revealing personal information like passwords or credit cards.
+safeb-blocked-malware-page-short-desc = { -brand-short-name } blocked this page because it might attempt to install malicious software that may steal or delete personal information on your computer.
+safeb-blocked-unwanted-page-short-desc = { -brand-short-name } blocked this page because it might try to trick you into installing programs that harm your browsing experience (for example, by changing your homepage or showing extra ads on sites you visit).
+safeb-blocked-harmful-page-short-desc = { -brand-short-name } blocked this page because it might try to install dangerous apps that steal or delete your information (for example, photos, passwords, messages and credit cards).
+safeb-palm-advisory-desc = Advisory provided by <a data-l10n-name='advisory_provider'>{ $advisoryname }</a>.
+safeb-palm-accept-label = Go backwards
+safeb-palm-see-details-label = See details
+
+## Variables
+##  $sitename (string) - Domain name for the blocked page
+
+safeb-blocked-phishing-page-error-desc-override = <span data-l10n-name='sitename'>{ $sitename }</span> has been <a data-l10n-name='error_desc_link'>reported as a deceptive site</a>. You can <a data-l10n-name='report_detection'>report a detection problem</a> or <a data-l10n-name='ignore_warning_link'>ignore the risk</a> and go to this unsafe site.
+safeb-blocked-phishing-page-error-desc-no-override = <span data-l10n-name='sitename'>{ $sitename }</span> has been <a data-l10n-name='error_desc_link'>reported as a deceptive site</a>. You can <a data-l10n-name='report_detection'>report a detection problem</a>.
+
+##
+
+safeb-blocked-phishing-page-learn-more = Learn more about deceptive sites and phishing at <a data-l10n-name='learn_more_link'>www.antiphishing.org</a>. Learn more about { -brand-short-name }’s Phishing and Malware Protection at <a data-l10n-name='firefox_support'>support.mozilla.org</a>.
+
+## Variables
+##  $sitename (string) - Domain name for the blocked page
+
+safeb-blocked-malware-page-error-desc-override-sumo = <span data-l10n-name='sitename'>{ $sitename }</span> has been <a data-l10n-name='error_desc_link'>reported as containing malicious software</a>. You can <a data-l10n-name='ignore_warning_link'>ignore the risk</a> and go to this unsafe site.
+safeb-blocked-malware-page-error-desc-no-override-sumo = <span data-l10n-name='sitename'>{ $sitename }</span> has been <a data-l10n-name='error_desc_link'>reported as containing malicious software</a>.
+
+##
+
+safeb-blocked-malware-page-learn-more-sumo = Learn more about { -brand-short-name }’s Phishing and Malware Protection at <a data-l10n-name='firefox_support'>support.mozilla.org</a>.
+
+## Variables
+##  $sitename (string) - Domain name for the blocked page
+
+safeb-blocked-unwanted-page-error-desc-override = <span data-l10n-name='sitename'>{ $sitename }</span> has been <a data-l10n-name='error_desc_link'>reported as containing harmful software</a>. You can <a data-l10n-name='ignore_warning_link'>ignore the risk</a> and go to this unsafe site.
+safeb-blocked-unwanted-page-error-desc-no-override = <span data-l10n-name='sitename'>{ $sitename }</span> has been <a data-l10n-name='error_desc_link'>reported as containing harmful software</a>.
+
+##
+
+safeb-blocked-unwanted-page-learn-more = Learn more about harmful and unwanted software at <a data-l10n-name='learn_more_link'>Unwanted Software Policy</a>. Learn more about { -brand-short-name }’s Phishing and Malware Protection at <a data-l10n-name='firefox_support'>support.mozilla.org</a>.
+
+## Variables
+##  $sitename (string) - Domain name for the blocked page
+
+safeb-blocked-harmful-page-error-desc-override = <span data-l10n-name='sitename'>{ $sitename }</span> has been <a data-l10n-name='error_desc_link'>reported as containing a potentially harmful application</a>. You can <a data-l10n-name='ignore_warning_link'>ignore the risk</a> and go to this unsafe site.
+safeb-blocked-harmful-page-error-desc-no-override = <span data-l10n-name='sitename'>{ $sitename }</span> has been <a data-l10n-name='error_desc_link'>reported as containing a potentially harmful application</a>.
+
+##
+
+safeb-blocked-harmful-page-learn-more = Learn more about { -brand-short-name }’s Phishing and Malware Protection at <a data-l10n-name='firefox_support'>support.mozilla.org</a>.
+safeb-palm-notdeceptive =
+    .label = This isn’t a deceptive site…
+    .accesskey = d
diff --git a/l10n-en-GB/browser/browser/sanitize.ftl b/l10n-en-GB/browser/browser/sanitize.ftl
new file mode 100644
index 0000000000..84cb27400c
--- /dev/null
+++ b/l10n-en-GB/browser/browser/sanitize.ftl
@@ -0,0 +1,112 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+sanitize-prefs2 =
+    .title = Settings for Clearing History
+    .style = min-width: 34em
+sanitize-prefs-style =
+    .style = width: 17em
+sanitize-dialog-title2 =
+    .title = Clear browsing data and cookies
+    .style = min-width: 34em
+sanitize-dialog-title =
+    .title = Clear Recent History
+    .style = min-width: 34em
+# When "Time range to clear" is set to "Everything", this message is used for the
+# title instead of dialog-title.
+sanitize-dialog-title-everything =
+    .title = Clear All History
+    .style = min-width: 34em
+clear-data-settings-label = When closed, { -brand-short-name } should automatically clear all
+
+## clear-time-duration-prefix is followed by a dropdown list, with
+## values localized using clear-time-duration-value-* messages.
+## clear-time-duration-suffix is left empty in English, but can be
+## used in other languages to change the structure of the message.
+##
+## This results in English:
+## Time range to clear: (Last Hour, Today, etc.)
+
+clear-time-duration-prefix =
+    .value = Time range to clear:{ " " }
+    .accesskey = T
+clear-time-duration-prefix2 =
+    .value = When:
+    .accesskey = W
+clear-time-duration-value-last-hour =
+    .label = Last hour
+clear-time-duration-value-last-2-hours =
+    .label = Last two hours
+clear-time-duration-value-last-4-hours =
+    .label = Last four hours
+clear-time-duration-value-today =
+    .label = Today
+clear-time-duration-value-everything =
+    .label = Everything
+clear-time-duration-suffix =
+    .value = { "" }
+
+## These strings are used as section comments and checkboxes
+## to select the items to remove
+
+history-section-label = History
+item-history-and-downloads =
+    .label = Browsing & download history
+    .accesskey = B
+item-browsing-and-search =
+    .label = Visited sites, saved form info and searches
+    .accesskey = V
+item-cookies =
+    .label = Cookies
+    .accesskey = C
+item-cookies-site-data =
+    .label = Cookies and site data
+    .accesskey = e
+item-cookies-site-data-description = May sign you out of sites or empty shopping carts
+item-active-logins =
+    .label = Active logins
+    .accesskey = L
+item-cache =
+    .label = Cache
+    .accesskey = a
+item-cached-content =
+    .label = Temporary cached files and pages
+    .accesskey = f
+item-cached-content-description = Clears items that helps sites load faster
+item-form-search-history =
+    .label = Form & search history
+    .accesskey = F
+item-site-prefs =
+    .label = Site settings
+    .accesskey = i
+item-site-prefs-description = Resets your permissions and site preferences to original settings
+item-download-history =
+    .label = Downloaded files list
+    .accesskey = D
+data-section-label = Data
+item-site-settings =
+    .label = Site settings
+    .accesskey = S
+item-offline-apps =
+    .label = Offline web site data
+    .accesskey = O
+sanitize-everything-undo-warning = This action cannot be undone.
+window-close =
+    .key = w
+sanitize-button-ok =
+    .label = Clear Now
+sanitize-button-ok2 =
+    .label = Clear
+# The label for the default button between the user clicking it and the window
+# closing.  Indicates the items are being cleared.
+sanitize-button-clearing =
+    .label = Clearing
+# Warning that appears when "Time range to clear" is set to "Everything" in Clear
+# Recent History dialog, provided that the user has not modified the default set
+# of history items to clear.
+sanitize-everything-warning = All history will be cleared.
+# Warning that appears when "Time range to clear" is set to "Everything" in Clear
+# Recent History dialog, provided that the user has modified the default set of
+# history items to clear.
+sanitize-selected-warning = All selected items will be cleared.
diff --git a/l10n-en-GB/browser/browser/screenshots.ftl b/l10n-en-GB/browser/browser/screenshots.ftl
new file mode 100644
index 0000000000..db3977d4f7
--- /dev/null
+++ b/l10n-en-GB/browser/browser/screenshots.ftl
@@ -0,0 +1,60 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+screenshot-toolbarbutton =
+    .label = Screenshot
+    .tooltiptext = Take a screenshot
+
+screenshot-shortcut =
+    .key = S
+
+screenshots-instructions = Drag or click on the page to select a region. Press ESC to cancel.
+screenshots-cancel-button = Cancel
+screenshots-save-visible-button = Save visible
+screenshots-save-page-button = Save full page
+screenshots-download-button = Download
+screenshots-download-button-tooltip = Download screenshot
+screenshots-copy-button = Copy
+screenshots-copy-button-tooltip = Copy screenshot to clipboard
+screenshots-download-button-title =
+    .title = Download screenshot
+screenshots-copy-button-title =
+    .title = Copy screenshot to clipboard
+screenshots-cancel-button-title =
+    .title = Cancel
+screenshots-retry-button-title =
+    .title = Retry screenshot
+
+screenshots-meta-key =
+    { PLATFORM() ->
+        [macos] ⌘
+       *[other] Ctrl
+    }
+screenshots-notification-link-copied-title = Link Copied
+screenshots-notification-link-copied-details = The link to your shot has been copied to the clipboard. Press { screenshots-meta-key }-V to paste.
+
+screenshots-notification-image-copied-title = Shot Copied
+screenshots-notification-image-copied-details = Your shot has been copied to the clipboard. Press { screenshots-meta-key }-V to paste.
+
+screenshots-request-error-title = Out of order.
+screenshots-request-error-details = Sorry! We couldn’t save your shot. Please try again later.
+
+screenshots-connection-error-title = We can’t connect to your screenshots.
+screenshots-connection-error-details = Please check your Internet connection. If you are able to connect to the Internet, there may be a temporary problem with the { -screenshots-brand-name } service.
+
+screenshots-login-error-details = We couldn’t save your shot because there is a problem with the { -screenshots-brand-name } service. Please try again later.
+
+screenshots-unshootable-page-error-title = We can’t screenshot this page.
+screenshots-unshootable-page-error-details = This isn’t a standard Web page, so you can’t take a screenshot of it.
+
+screenshots-empty-selection-error-title = Your selection is too small
+
+screenshots-private-window-error-title = { -screenshots-brand-name } is disabled in Private Browsing Mode
+screenshots-private-window-error-details = Sorry for the inconvenience. We are working on this feature for future releases.
+
+screenshots-generic-error-title = Whoa! { -screenshots-brand-name } went haywire.
+screenshots-generic-error-details = We’re not sure what just happened. Care to try again or take a shot of a different page?
+
+screenshots-too-large-error-title = Your screenshot was cropped because it was too large
+screenshots-too-large-error-details = Try selecting a region that’s smaller than 32,700 pixels on its longest side or 124,900,000 pixels total area.
diff --git a/l10n-en-GB/browser/browser/screenshotsOverlay.ftl b/l10n-en-GB/browser/browser/screenshotsOverlay.ftl
new file mode 100644
index 0000000000..ad955914f3
--- /dev/null
+++ b/l10n-en-GB/browser/browser/screenshotsOverlay.ftl
@@ -0,0 +1,14 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+screenshots-overlay-cancel-button = Cancel
+screenshots-overlay-instructions = Drag or click on the page to select a region. Press ESC to cancel.
+screenshots-overlay-download-button = Download
+screenshots-overlay-copy-button = Copy
+# This string represents the selection size area
+# "x" here represents "by" (i.e 123 by 456)
+# Variables:
+#   $width (Number) - The width of the selection region in pixels
+#   $height (Number) - The height of the selection region in pixels
+screenshots-overlay-selection-region-size = { $width } x { $height }
diff --git a/l10n-en-GB/browser/browser/search.ftl b/l10n-en-GB/browser/browser/search.ftl
new file mode 100644
index 0000000000..1074cc9b11
--- /dev/null
+++ b/l10n-en-GB/browser/browser/search.ftl
@@ -0,0 +1,38 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+## These strings are used for errors when installing OpenSearch engines, e.g.
+## via "Add Search Engine" on the address bar or search bar.
+## Variables
+## $location-url (String) - the URL of the OpenSearch engine that was attempted to be installed.
+
+opensearch-error-duplicate-title = Install Error
+opensearch-error-duplicate-desc = { -brand-short-name } could not install the search plugin from “{ $location-url }” because an engine with the same name already exists.
+
+opensearch-error-format-title = Invalid Format
+opensearch-error-format-desc = { -brand-short-name } could not install the search engine from: { $location-url }
+
+opensearch-error-download-title = Download Error
+opensearch-error-download-desc = { -brand-short-name } could not download the search plugin from: { $location-url }
+
+##
+
+searchbar-submit =
+    .tooltiptext = Submit search
+
+# This string is displayed in the search box when the input field is empty
+searchbar-input =
+    .placeholder = Search
+
+searchbar-icon =
+    .tooltiptext = Search
+
+## Infobar shown when search engine is removed and replaced.
+## Variables
+## $oldEngine (String) - the search engine to be removed.
+## $newEngine (String) - the search engine to replace the removed search engine.
+
+removed-search-engine-message = <strong>Your default search engine has been changed.</strong> { $oldEngine } is no longer available as a default search engine in { -brand-short-name }. { $newEngine } is now your default search engine. To change to another default search engine, go to settings. <label data-l10n-name="remove-search-engine-article">Learn more</label>
+remove-search-engine-button = OK
diff --git a/l10n-en-GB/browser/browser/setDesktopBackground.ftl b/l10n-en-GB/browser/browser/setDesktopBackground.ftl
new file mode 100644
index 0000000000..6d54422d18
--- /dev/null
+++ b/l10n-en-GB/browser/browser/setDesktopBackground.ftl
@@ -0,0 +1,40 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+set-desktop-background-window =
+    .title = Set Desktop Background
+
+set-desktop-background-accept =
+    .label = Set Desktop Background
+
+open-desktop-prefs =
+    .label = Open Desktop Preferences
+
+set-background-preview-unavailable = Preview unavailable
+
+# This refers to the wallpaper "spanning" multiple monitors when the
+# user has more than one. Only some of the entire image will be on
+# each monitor. This should ideally match the wording in Windows' own
+# Desktop Background settings page.
+set-background-span =
+    .label = Span
+
+set-background-color = Colour:
+
+set-background-position = Position:
+
+set-background-tile =
+    .label = Tile
+
+set-background-center =
+    .label = Centre
+
+set-background-stretch =
+    .label = Stretch
+
+set-background-fill =
+    .label = Fill
+
+set-background-fit =
+    .label = Fit
diff --git a/l10n-en-GB/browser/browser/shopping.ftl b/l10n-en-GB/browser/browser/shopping.ftl
new file mode 100644
index 0000000000..3412ad6053
--- /dev/null
+++ b/l10n-en-GB/browser/browser/shopping.ftl
@@ -0,0 +1,201 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+shopping-page-title = { -brand-product-name } Shopping
+# Title for page showing where a user can check the
+# review quality of online shopping product reviews
+shopping-main-container-title = Review Checker
+shopping-beta-marker = Beta
+# This string is for ensuring that screen reader technology
+# can read out the "Beta" part of the shopping sidebar header.
+# Any changes to shopping-main-container-title and
+# shopping-beta-marker should also be reflected here.
+shopping-a11y-header =
+    .aria-label = Review Checker - beta
+shopping-close-button =
+    .title = Close
+# This string is for notifying screen reader users that the
+# sidebar is still loading data.
+shopping-a11y-loading =
+    .aria-label = Loading…
+
+## Strings for the letter grade component.
+## For now, we only support letter grades A, B, C, D and F.
+## Letter A indicates the highest grade, and F indicates the lowest grade.
+## Letters are hardcoded and cannot be localized.
+
+shopping-letter-grade-description-ab = Reliable reviews
+shopping-letter-grade-description-c = Mix of reliable and unreliable reviews
+shopping-letter-grade-description-df = Unreliable reviews
+# This string is displayed in a tooltip that appears when the user hovers
+# over the letter grade component without a visible description.
+# It is also used for screen readers.
+#  $letter (String) - The letter grade as A, B, C, D or F (hardcoded).
+#  $description (String) - The localized letter grade description. See shopping-letter-grade-description-* strings above.
+shopping-letter-grade-tooltip =
+    .title = { $letter } - { $description }
+
+## Strings for the shopping message-bar
+
+shopping-message-bar-warning-stale-analysis-message-2 = New info to check
+shopping-message-bar-warning-stale-analysis-button = Check now
+shopping-message-bar-generic-error =
+    .heading = No info available right now
+    .message = We’re working to resolve the issue. Please check back soon.
+shopping-message-bar-warning-not-enough-reviews =
+    .heading = Not enough reviews yet
+    .message = When this product has more reviews, we’ll be able to check their quality.
+shopping-message-bar-warning-product-not-available =
+    .heading = Product is not available
+    .message = If you see this product is back in stock, report it and we’ll work on checking the reviews.
+shopping-message-bar-warning-product-not-available-button2 = Report product is in stock
+shopping-message-bar-thanks-for-reporting =
+    .heading = Thanks for reporting!
+    .message = We should have info about this product’s reviews within 24 hours. Please check back.
+shopping-message-bar-warning-product-not-available-reported =
+    .heading = Info coming soon
+    .message = We should have info about this product’s reviews within 24 hours. Please check back.
+shopping-message-bar-analysis-in-progress-title2 = Checking review quality
+shopping-message-bar-analysis-in-progress-message2 = This could take about 60 seconds.
+# Variables:
+#  $percentage (Number) - The percentage complete that the analysis is, per our servers.
+shopping-message-bar-analysis-in-progress-with-amount = Checking review quality ({ $percentage }%)
+shopping-message-bar-page-not-supported =
+    .heading = We can’t check these reviews
+    .message = Unfortunately, we can’t check the review quality for certain types of products. For example, gift cards and streaming video, music, and games.
+
+## Strings for the product review snippets card
+
+shopping-highlights-label =
+    .label = Highlights from recent reviews
+shopping-highlight-price = Price
+shopping-highlight-quality = Quality
+shopping-highlight-shipping = Shipping
+shopping-highlight-competitiveness = Competitiveness
+shopping-highlight-packaging = Packaging
+
+## Strings for show more card
+
+shopping-show-more-button = Show more
+shopping-show-less-button = Show less
+
+## Strings for the settings card
+
+shopping-settings-label =
+    .label = Settings
+shopping-settings-recommendations-toggle =
+    .label = Show ads in Review Checker
+shopping-settings-recommendations-learn-more2 = You’ll see occasional ads for relevant products. We only advertise products with reliable reviews. <a data-l10n-name="review-quality-url">Learn more</a>
+shopping-settings-opt-out-button = Turn off Review Checker
+powered-by-fakespot = Review Checker is powered by <a data-l10n-name="fakespot-link">{ -fakespot-brand-full-name }</a>.
+
+## Strings for the adjusted rating component
+
+# "Adjusted rating" means a star rating that has been adjusted to include only
+# reliable reviews.
+shopping-adjusted-rating-label =
+    .label = Adjusted rating
+shopping-adjusted-rating-unreliable-reviews = Unreliable reviews removed
+
+## Strings for the review reliability component
+
+shopping-review-reliability-label =
+    .label = How reliable are these reviews?
+
+## Strings for the analysis explainer component
+
+shopping-analysis-explainer-label =
+    .label = How we determine review quality
+shopping-analysis-explainer-intro2 = We use AI technology from { -fakespot-brand-full-name } to check the reliability of product reviews. This will only help you assess review quality, not product quality.
+shopping-analysis-explainer-grades-intro = We assign each product’s reviews a <strong>letter grade</strong> from A to F.
+shopping-analysis-explainer-adjusted-rating-description = The <strong>adjusted rating</strong> is based only on reviews we believe to be reliable.
+shopping-analysis-explainer-learn-more2 = Learn more about <a data-l10n-name="review-quality-url">how { -fakespot-brand-name } determines review quality</a>.
+# This string includes the short brand name of one of the three supported
+# websites, which will be inserted without being translated.
+#  $retailer (String) - capitalized name of the shopping website, for example, "Amazon".
+shopping-analysis-explainer-highlights-description = <strong>Highlights</strong> are from { $retailer } reviews within the last 80 days that we believe to be reliable.
+shopping-analysis-explainer-review-grading-scale-reliable = Reliable reviews. We believe the reviews are likely from real customers who left honest, unbiased reviews.
+shopping-analysis-explainer-review-grading-scale-mixed = We believe there’s a mix of reliable and unreliable reviews.
+shopping-analysis-explainer-review-grading-scale-unreliable = Unreliable reviews. We believe the reviews are likely fake or from biased reviewers.
+
+## Strings for UrlBar button
+
+shopping-sidebar-open-button2 =
+    .tooltiptext = Open Review Checker
+shopping-sidebar-close-button2 =
+    .tooltiptext = Close Review Checker
+
+## Strings for the unanalyzed product card.
+## The word 'analyzer' when used here reflects what this tool is called on
+## fakespot.com. If possible, a different word should be used for the Fakespot
+## tool (the Fakespot by Mozilla 'analyzer') other than 'checker', which is
+## used in the name of the Firefox feature ('Review Checker'). If that is not
+## possible - if these terms are not meaningfully different - that is OK.
+
+shopping-unanalyzed-product-header-2 = No info about these reviews yet
+shopping-unanalyzed-product-message-2 = To know whether this product’s reviews are reliable, check the review quality. It only takes about 60 seconds.
+shopping-unanalyzed-product-analyze-button = Check review quality
+
+## Strings for the advertisement
+
+more-to-consider-ad-label =
+    .label = More to consider
+ad-by-fakespot = Ad by { -fakespot-brand-name }
+
+## Shopping survey strings.
+
+shopping-survey-headline = Help improve { -brand-product-name }
+shopping-survey-question-one = How satisfied are you with the Review Checker experience in { -brand-product-name }?
+shopping-survey-q1-radio-1-label = Very satisfied
+shopping-survey-q1-radio-2-label = Satisfied
+shopping-survey-q1-radio-3-label = Neutral
+shopping-survey-q1-radio-4-label = Dissatisfied
+shopping-survey-q1-radio-5-label = Very dissatisfied
+shopping-survey-question-two = Does the Review Checker make it easier for you to make purchase decisions?
+shopping-survey-q2-radio-1-label = Yes
+shopping-survey-q2-radio-2-label = No
+shopping-survey-q2-radio-3-label = I don’t know
+shopping-survey-next-button-label = Next
+shopping-survey-submit-button-label = Submit
+shopping-survey-terms-link = Terms of use
+shopping-survey-thanks =
+    .heading = Thanks for your feedback!
+
+## Shopping Feature Callout strings.
+## "price tag" refers to the price tag icon displayed in the address bar to
+## access the feature.
+
+shopping-callout-closed-opted-in-subtitle = Get back to <strong>Review Checker</strong> whenever you see the price tag.
+shopping-callout-pdp-opted-in-title = Are these reviews reliable? Find out fast.
+shopping-callout-pdp-opted-in-subtitle = Open Review Checker to see an adjusted rating with unreliable reviews removed. Plus, see highlights from recent authentic reviews.
+shopping-callout-closed-not-opted-in-title = One click to reliable reviews
+shopping-callout-closed-not-opted-in-subtitle = Give Review Checker a try whenever you see the price tag. Get insights from real shoppers quickly — before you buy.
+
+## Onboarding message strings.
+
+shopping-onboarding-headline = Try our trusted guide to product reviews
+# Dynamic subtitle. Sites are limited to Amazon, Walmart or Best Buy.
+# Variables:
+#   $currentSite (str) - The current shopping page name
+#   $secondSite (str) - A second shopping page name
+#   $thirdSite (str) - A third shopping page name
+shopping-onboarding-dynamic-subtitle-1 = See how reliable product reviews are on <b>{ $currentSite }</b> before you buy. Review Checker, an experimental feature from { -brand-product-name }, is built right into the browser. It works on <b>{ $secondSite }</b> and <b>{ $thirdSite }</b>, too.
+# Subtitle for countries where we only support one shopping website (e.g. currently used in FR/DE with Amazon)
+# Variables:
+#   $currentSite (str) - The current shopping page name
+shopping-onboarding-single-subtitle = See how reliable product reviews are on <b>{ $currentSite }</b> before you buy. Review Checker, an experimental feature from { -brand-product-name }, is built right into the browser.
+shopping-onboarding-body = Using the power of { -fakespot-brand-full-name }, we help you avoid biased and inauthentic reviews. Our AI model is always improving to protect you as you shop. <a data-l10n-name="learn_more">Learn more</a>
+shopping-onboarding-opt-in-privacy-policy-and-terms-of-use2 = By selecting “{ shopping-onboarding-opt-in-button }“ you agree to { -fakespot-brand-name }’s <a data-l10n-name="privacy_policy">privacy policy</a> and <a data-l10n-name="terms_of_use">terms of use.</a>
+shopping-onboarding-opt-in-privacy-policy-and-terms-of-use3 = By selecting “{ shopping-onboarding-opt-in-button }“ you agree to { -brand-product-name }’s <a data-l10n-name="privacy_policy">privacy policy</a> and { -fakespot-brand-name }’s <a data-l10n-name="terms_of_use">terms of use.</a>
+shopping-onboarding-opt-in-button = Yes, try it
+shopping-onboarding-not-now-button = Not now
+shopping-onboarding-dialog-close-button =
+    .title = Close
+    .aria-label = Close
+# Aria-label to make the "steps" of the shopping onboarding container visible to screen readers.
+# Variables:
+#   $current (Int) - Number of the current page
+#   $total (Int) - Total number of pages
+shopping-onboarding-welcome-steps-indicator-label =
+    .aria-label = Progress: step { $current } of { $total }
diff --git a/l10n-en-GB/browser/browser/sidebarMenu.ftl b/l10n-en-GB/browser/browser/sidebarMenu.ftl
new file mode 100644
index 0000000000..dbff817b28
--- /dev/null
+++ b/l10n-en-GB/browser/browser/sidebarMenu.ftl
@@ -0,0 +1,18 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+sidebar-menu-bookmarks =
+    .label = Bookmarks
+
+sidebar-menu-history =
+    .label = History
+
+sidebar-menu-synced-tabs =
+    .label = Synced Tabs
+
+sidebar-menu-close =
+    .label = Close Sidebar
+
+sidebar-close-button =
+    .tooltiptext = Close sidebar
diff --git a/l10n-en-GB/browser/browser/sitePermissions.ftl b/l10n-en-GB/browser/browser/sitePermissions.ftl
new file mode 100644
index 0000000000..953da0eda9
--- /dev/null
+++ b/l10n-en-GB/browser/browser/sitePermissions.ftl
@@ -0,0 +1,12 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# This string is used to display the option to open blocked popup(s) in site permission management panels.
+# Variables:
+#   $count (String) - Number of blocked pop-ups
+site-permissions-open-blocked-popups =
+    { $count ->
+        [one] Open { $count } blocked pop-up…
+       *[other] Open { $count } blocked pop-ups…
+    }
diff --git a/l10n-en-GB/browser/browser/siteProtections.ftl b/l10n-en-GB/browser/browser/siteProtections.ftl
new file mode 100644
index 0000000000..388a759898
--- /dev/null
+++ b/l10n-en-GB/browser/browser/siteProtections.ftl
@@ -0,0 +1,100 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+content-blocking-trackers-view-empty = None detected on this site
+content-blocking-cookies-blocking-trackers-label = Cross-Site Tracking Cookies
+content-blocking-cookies-blocking-third-party-label = Third-Party Cookies
+content-blocking-cookies-blocking-unvisited-label = Unvisited Site Cookies
+content-blocking-cookies-blocking-all-label = All Cookies
+content-blocking-cookies-view-first-party-label = From This Site
+content-blocking-cookies-view-trackers-label = Cross-Site Tracking Cookies
+content-blocking-cookies-view-third-party-label = Third-Party Cookies
+# This label is shown next to a cookie origin in the cookies subview.
+# It forms the end of the (imaginary) sentence "www.example.com [was] Allowed"
+content-blocking-cookies-view-allowed-label =
+    .value = Allowed
+# This label is shown next to a cookie origin in the cookies subview.
+# It forms the end of the (imaginary) sentence "www.example.com [was] Blocked"
+content-blocking-cookies-view-blocked-label =
+    .value = Blocked
+# Variables:
+#   $domain (String): the domain of the site.
+content-blocking-cookies-view-remove-button =
+    .tooltiptext = Clear cookie exception for { $domain }
+tracking-protection-icon-active = Blocking social media trackers, cross-site tracking cookies, and fingerprinters.
+tracking-protection-icon-active-container =
+    .aria-label = { tracking-protection-icon-active }
+tracking-protection-icon-disabled = Enhanced Tracking Protection is OFF for this site.
+tracking-protection-icon-disabled-container =
+    .aria-label = { tracking-protection-icon-disabled }
+tracking-protection-icon-no-trackers-detected = No trackers known to { -brand-short-name } were detected on this page.
+tracking-protection-icon-no-trackers-detected-container =
+    .aria-label = { tracking-protection-icon-no-trackers-detected }
+
+## Variables:
+##   $host (String): the site's hostname
+
+# Header of the Protections Panel.
+protections-header = Protections for { $host }
+
+## Blocking and Not Blocking sub-views in the Protections Panel
+
+protections-blocking-fingerprinters =
+    .title = Fingerprinters Blocked
+protections-blocking-cryptominers =
+    .title = Cryptominers Blocked
+protections-blocking-cookies-trackers =
+    .title = Cross-Site Tracking Cookies Blocked
+protections-blocking-cookies-third-party =
+    .title = Third-Party Cookies Blocked
+protections-blocking-cookies-all =
+    .title = All Cookies Blocked
+protections-blocking-cookies-unvisited =
+    .title = Unvisited Site Cookies Blocked
+protections-blocking-tracking-content =
+    .title = Tracking Content Blocked
+protections-blocking-social-media-trackers =
+    .title = Social Media Trackers Blocked
+protections-not-blocking-fingerprinters =
+    .title = Not Blocking Fingerprinters
+protections-not-blocking-cryptominers =
+    .title = Not Blocking Cryptominers
+protections-not-blocking-cookies-third-party =
+    .title = Not Blocking Third-Party Cookies
+protections-not-blocking-cookies-all =
+    .title = Not Blocking Cookies
+protections-not-blocking-cross-site-tracking-cookies =
+    .title = Not Blocking Cross-Site Tracking Cookies
+protections-not-blocking-tracking-content =
+    .title = Not Blocking Tracking Content
+protections-not-blocking-social-media-trackers =
+    .title = Not Blocking Social Media Trackers
+
+## Footer and Milestones sections in the Protections Panel
+## Variables:
+##   $trackerCount (Number): number of trackers blocked
+##   $date (Date): the date on which we started counting
+
+# This text indicates the total number of trackers blocked on all sites.
+# In its tooltip, we show the date when we started counting this number.
+protections-footer-blocked-tracker-counter =
+    { $trackerCount ->
+        [one] { $trackerCount } Blocked
+       *[other] { $trackerCount } Blocked
+    }
+    .tooltiptext = Since { DATETIME($date, year: "numeric", month: "long", day: "numeric") }
+# This text indicates the total number of trackers blocked on all sites.
+# It should be the same as protections-footer-blocked-tracker-counter;
+# this message is used to leave out the tooltip when the date is not available.
+protections-footer-blocked-tracker-counter-no-tooltip =
+    { $trackerCount ->
+        [one] { $trackerCount } Blocked
+       *[other] { $trackerCount } Blocked
+    }
+# In English this looks like "Firefox blocked over 10,000 trackers since October 2019"
+protections-milestone =
+    { $trackerCount ->
+        [one] { -brand-short-name } blocked { $trackerCount } tracker since { DATETIME($date, year: "numeric", month: "long") }
+       *[other] { -brand-short-name } blocked over { $trackerCount } trackers since { DATETIME($date, year: "numeric", month: "long") }
+    }
diff --git a/l10n-en-GB/browser/browser/speechDispatcher.ftl b/l10n-en-GB/browser/browser/speechDispatcher.ftl
new file mode 100644
index 0000000000..69ccfc35af
--- /dev/null
+++ b/l10n-en-GB/browser/browser/speechDispatcher.ftl
@@ -0,0 +1,16 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+### Speech Dispatches is the name of a speech synthesis tool and shouldn’t be
+### localized (https://freebsoft.org/speechd).
+
+speech-dispatcher-lib-missing = You can’t use speech synthesis because the Speech Dispatcher library is missing.
+speech-dispatcher-lib-too-old = You can’t use speech synthesis because Speech Dispatcher needs to be updated.
+speech-dispatcher-missing-symbol = You can’t use speech synthesis because the Speech Dispatcher library is broken.
+speech-dispatcher-open-fail = You can’t use speech synthesis because Speech Dispatcher won’t open.
+speech-dispatcher-no-voices = You can’t use speech synthesis because voices aren’t available in Speech Dispatcher.
+speech-dispatcher-dismiss-button =
+    .label = Don’t show again
+    .accesskey = D
diff --git a/l10n-en-GB/browser/browser/spotlight.ftl b/l10n-en-GB/browser/browser/spotlight.ftl
new file mode 100644
index 0000000000..fb05f484de
--- /dev/null
+++ b/l10n-en-GB/browser/browser/spotlight.ftl
@@ -0,0 +1,22 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# Dialog close button
+spotlight-dialog-close-button =
+    .title = Close
+    .aria-label = Close
+
+## Mobile download button strings
+
+spotlight-android-marketplace-button =
+    .title = Get it on Google Play
+spotlight-ios-marketplace-button =
+    .title = Download on the App Store
+
+## Firefox Focus promo message strings
+
+spotlight-focus-promo-title = Get { -focus-brand-name }
+spotlight-focus-promo-subtitle = Scan the QR code to download.
+spotlight-focus-promo-qr-code =
+    .alt = Scan the QR code to get { -focus-brand-name }
diff --git a/l10n-en-GB/browser/browser/sync.ftl b/l10n-en-GB/browser/browser/sync.ftl
new file mode 100644
index 0000000000..00c669948b
--- /dev/null
+++ b/l10n-en-GB/browser/browser/sync.ftl
@@ -0,0 +1,35 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+fxa-toolbar-sync-syncing2 = Synchronising…
+sync-disconnect-dialog-title2 = Disconnect?
+sync-disconnect-dialog-body = { -brand-product-name } will stop synchronising your account but won’t delete any of your browsing data on this device.
+sync-disconnect-dialog-button = Disconnect
+fxa-signout-dialog2-title = Sign out of { -fxaccount-brand-name(capitalization: "sentence") }?
+fxa-signout-dialog-title2 = Sign out of your account?
+fxa-signout-dialog-body = Synchronised data will remain in your account.
+fxa-signout-dialog2-button = Sign out
+fxa-signout-dialog2-checkbox = Delete data from this device (passwords, history, bookmarks, etc.)
+fxa-menu-sync-settings =
+    .label = Sync settings
+fxa-menu-turn-on-sync =
+    .value = Turn on sync
+fxa-menu-turn-on-sync-default = Turn on sync
+fxa-menu-connect-another-device =
+    .label = Connect another device…
+# Variables:
+#   $tabCount (Number): The number of tabs sent to the device.
+fxa-menu-send-tab-to-device =
+    .label =
+        { $tabCount ->
+            [one] Send tab to device
+           *[other] Send { $tabCount } tabs to device
+        }
+# This is shown dynamically within "Send tab to device" in fxa menu.
+fxa-menu-send-tab-to-device-syncnotready =
+    .label = Synchronising Devices…
+# This is shown within "Send tab to device" in fxa menu if account is not configured.
+fxa-menu-send-tab-to-device-description = Send a tab instantly to any device you’re signed in on.
+fxa-menu-sign-out =
+    .label = Sign out…
diff --git a/l10n-en-GB/browser/browser/syncedTabs.ftl b/l10n-en-GB/browser/browser/syncedTabs.ftl
new file mode 100644
index 0000000000..b5cae6c2bf
--- /dev/null
+++ b/l10n-en-GB/browser/browser/syncedTabs.ftl
@@ -0,0 +1,61 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+synced-tabs-sidebar-title = Synced Tabs
+synced-tabs-sidebar-noclients-subtitle = Want to see your tabs from other devices here?
+synced-tabs-sidebar-intro = View a list of tabs from your other devices.
+synced-tabs-sidebar-unverified = Your account needs to be verified.
+synced-tabs-sidebar-notabs = No open tabs
+synced-tabs-sidebar-open-settings = Open Sync settings
+synced-tabs-sidebar-tabsnotsyncing = Turn on tab synchronisation to view a list of tabs from your other devices.
+synced-tabs-sidebar-connect-another-device = Connect Another Device
+synced-tabs-sidebar-search =
+    .placeholder = Search synchronised tabs
+
+## Displayed in the Synced Tabs sidebar's context menu when right-clicking tabs
+## and/or devices in the list. The "Open" strings below should be translated
+## consistently with the equivalent strings for the bookmarks manager's context
+## menu. That menu is activated by right-clicking a bookmark in the Library
+## window. The bookmarks manager context's strings are located in places.ftl.
+
+synced-tabs-context-open =
+    .label = Open
+    .accesskey = O
+synced-tabs-context-open-in-tab =
+    .label = Open in New Tab
+    .accesskey = w
+synced-tabs-context-open-in-container-tab =
+    .label = Open in New Container Tab
+    .accesskey = i
+synced-tabs-context-open-in-window =
+    .label = Open in New Window
+    .accesskey = N
+synced-tabs-context-open-in-private-window =
+    .label = Open in New Private Window
+    .accesskey = P
+
+##
+
+# Displayed in the Synced Tabs sidebar's context menu when right-clicking tabs
+# and/or devices in the list. This string is for a menuitem equivalent to one in
+# the tab context menu (activated by right-clicking a tab in the tabstrip). That
+# string is located in tabContextMenu.ftl. So, this string should be translated
+# consistently with the "Bookmark Tab…" string there.
+synced-tabs-context-bookmark =
+    .label = Bookmark Tab…
+    .accesskey = B
+synced-tabs-context-copy =
+    .label = Copy
+    .accesskey = C
+synced-tabs-context-open-all-in-tabs =
+    .label = Open All in Tabs
+    .accesskey = O
+synced-tabs-context-manage-devices =
+    .label = Manage Devices…
+    .accesskey = D
+synced-tabs-context-sync-now =
+    .label = Synchronise Now
+    .accesskey = S
+synced-tabs-fxa-sign-in = Sign in to synchronise
+synced-tabs-turn-on-sync = Turn on synchronisation
diff --git a/l10n-en-GB/browser/browser/tabContextMenu.ftl b/l10n-en-GB/browser/browser/tabContextMenu.ftl
new file mode 100644
index 0000000000..df58df794c
--- /dev/null
+++ b/l10n-en-GB/browser/browser/tabContextMenu.ftl
@@ -0,0 +1,110 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+tab-context-new-tab =
+    .label = New Tab
+    .accesskey = w
+reload-tab =
+    .label = Reload Tab
+    .accesskey = R
+select-all-tabs =
+    .label = Select All Tabs
+    .accesskey = S
+tab-context-play-tab =
+    .label = Play Tab
+    .accesskey = l
+tab-context-play-tabs =
+    .label = Play Tabs
+    .accesskey = y
+duplicate-tab =
+    .label = Duplicate Tab
+    .accesskey = D
+duplicate-tabs =
+    .label = Duplicate Tabs
+    .accesskey = D
+# The following string is displayed on a menuitem that will close the tabs from the start of the tabstrip to the currently targeted tab (excluding the currently targeted and any other selected tabs).
+# In left-to-right languages this should use "Left" and in right-to-left languages this should use "Right".
+close-tabs-to-the-start =
+    .label = Close Tabs to Left
+    .accesskey = l
+# The following string is displayed on a menuitem that will close the tabs from the end of the tabstrip to the currently targeted tab (excluding the currently targeted and any other selected tabs).
+# In left-to-right languages this should use "Right" and in right-to-left languages this should use "Left".
+close-tabs-to-the-end =
+    .label = Close Tabs to Right
+    .accesskey = i
+close-other-tabs =
+    .label = Close Other Tabs
+    .accesskey = o
+reload-tabs =
+    .label = Reload Tabs
+    .accesskey = R
+pin-tab =
+    .label = Pin Tab
+    .accesskey = P
+unpin-tab =
+    .label = Unpin Tab
+    .accesskey = p
+pin-selected-tabs =
+    .label = Pin Tabs
+    .accesskey = P
+unpin-selected-tabs =
+    .label = Unpin Tabs
+    .accesskey = p
+bookmark-selected-tabs =
+    .label = Bookmark Tabs…
+    .accesskey = B
+tab-context-bookmark-tab =
+    .label = Bookmark Tab…
+    .accesskey = B
+tab-context-open-in-new-container-tab =
+    .label = Open in New Container Tab
+    .accesskey = e
+move-to-start =
+    .label = Move to Start
+    .accesskey = S
+move-to-end =
+    .label = Move to End
+    .accesskey = E
+move-to-new-window =
+    .label = Move to New Window
+    .accesskey = W
+tab-context-close-multiple-tabs =
+    .label = Close Multiple Tabs
+    .accesskey = M
+tab-context-share-url =
+    .label = Share
+    .accesskey = h
+
+## Variables:
+##  $tabCount (Number): the number of tabs that are affected by the action.
+
+tab-context-reopen-closed-tabs =
+    .label =
+        { $tabCount ->
+            [1] Reopen Closed Tab
+           *[other] Reopen Closed Tabs
+        }
+    .accesskey = o
+tab-context-close-n-tabs =
+    .label =
+        { $tabCount ->
+            [1] Close Tab
+           *[other] Close { $tabCount } Tabs
+        }
+    .accesskey = C
+tab-context-move-tabs =
+    .label =
+        { $tabCount ->
+            [1] Move Tab
+           *[other] Move Tabs
+        }
+    .accesskey = v
+
+tab-context-send-tabs-to-device =
+    .label =
+        { $tabCount ->
+            [1] Send Tab to Device
+           *[other] Send { $tabCount } Tabs to Device
+        }
+    .accesskey = n
diff --git a/l10n-en-GB/browser/browser/tabbrowser.ftl b/l10n-en-GB/browser/browser/tabbrowser.ftl
new file mode 100644
index 0000000000..09e85eda2a
--- /dev/null
+++ b/l10n-en-GB/browser/browser/tabbrowser.ftl
@@ -0,0 +1,160 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+tabbrowser-empty-tab-title = New Tab
+tabbrowser-empty-private-tab-title = New Private Tab
+
+tabbrowser-menuitem-close-tab =
+    .label = Close Tab
+tabbrowser-menuitem-close =
+    .label = Close
+
+# Displayed as a tooltip on container tabs
+# Variables:
+#   $title (String): the title of the current tab.
+#   $containerName (String): the name of the current container.
+tabbrowser-container-tab-title = { $title } — { $containerName }
+
+# Variables:
+#   $tabCount (Number): The number of tabs that will be closed.
+tabbrowser-close-tabs-tooltip =
+    .label =
+        { $tabCount ->
+            [one] Close tab
+           *[other] Close { $tabCount } tabs
+        }
+
+## Tooltips for tab audio control
+## Variables:
+##   $tabCount (Number): The number of tabs that will be affected.
+
+# Variables:
+#   $shortcut (String): The keyboard shortcut for "Mute tab".
+tabbrowser-mute-tab-audio-tooltip =
+    .label =
+        { $tabCount ->
+            [one] Mute tab ({ $shortcut })
+           *[other] Mute { $tabCount } tabs ({ $shortcut })
+        }
+# Variables:
+#   $shortcut (String): The keyboard shortcut for "Unmute tab".
+tabbrowser-unmute-tab-audio-tooltip =
+    .label =
+        { $tabCount ->
+            [one] Unmute tab ({ $shortcut })
+           *[other] Unmute { $tabCount } tabs ({ $shortcut })
+        }
+tabbrowser-mute-tab-audio-background-tooltip =
+    .label =
+        { $tabCount ->
+            [one] Mute tab
+           *[other] Mute { $tabCount } tabs
+        }
+tabbrowser-unmute-tab-audio-background-tooltip =
+    .label =
+        { $tabCount ->
+            [one] Unmute tab
+           *[other] Unmute { $tabCount } tabs
+        }
+tabbrowser-unblock-tab-audio-tooltip =
+    .label =
+        { $tabCount ->
+            [one] Play tab
+           *[other] Play { $tabCount } tabs
+        }
+
+## Confirmation dialog when closing a window with more than one tab open,
+## or when quitting when only one window is open.
+
+# The singular form is not considered since this string is used only for multiple tabs.
+# Variables:
+#   $tabCount (Number): The number of tabs that will be closed.
+tabbrowser-confirm-close-tabs-title = Close { $tabCount } tabs?
+tabbrowser-confirm-close-tabs-button = Close tabs
+tabbrowser-confirm-close-tabs-checkbox = Confirm before closing multiple tabs
+
+## Confirmation dialog when quitting using the menu and multiple windows are open.
+
+# The forms for 0 or 1 items are not considered since this string is used only for
+# multiple windows.
+# Variables:
+#   $windowCount (Number): The number of windows that will be closed.
+tabbrowser-confirm-close-windows-title = Close { $windowCount } windows?
+tabbrowser-confirm-close-windows-button =
+    { PLATFORM() ->
+        [windows] Close and exit
+       *[other] Close and quit
+    }
+
+## Confirmation dialog when quitting using the keyboard shortcut (Ctrl/Cmd+Q)
+## Windows does not show a prompt on quit when using the keyboard shortcut by default.
+
+tabbrowser-confirm-close-tabs-with-key-title = Close window and quit { -brand-short-name }?
+tabbrowser-confirm-close-tabs-with-key-button = Quit { -brand-short-name }
+# Variables:
+#   $quitKey (String): the text of the keyboard shortcut for quitting.
+tabbrowser-confirm-close-tabs-with-key-checkbox = Confirm before quitting with { $quitKey }
+
+## Confirmation dialog when opening multiple tabs simultaneously
+
+tabbrowser-confirm-open-multiple-tabs-title = Confirm open
+# Variables:
+#   $tabCount (Number): The number of tabs that will be opened.
+tabbrowser-confirm-open-multiple-tabs-message =
+    { $tabCount ->
+       *[other] You are about to open { $tabCount } tabs. This might slow down { -brand-short-name } while the pages are loading. Are you sure you want to continue?
+    }
+tabbrowser-confirm-open-multiple-tabs-button = Open tabs
+tabbrowser-confirm-open-multiple-tabs-checkbox = Warn me when opening multiple tabs might slow down { -brand-short-name }
+
+## Confirmation dialog for enabling caret browsing
+
+tabbrowser-confirm-caretbrowsing-title = Caret Browsing
+tabbrowser-confirm-caretbrowsing-message = Pressing F7 turns Caret Browsing on or off. This feature places a moveable cursor in web pages, allowing you to select text with the keyboard. Do you want to turn Caret Browsing on?
+tabbrowser-confirm-caretbrowsing-checkbox = Do not show me this dialog box again.
+
+##
+
+# Variables:
+#   $domain (String): URL of the page that is trying to steal focus.
+tabbrowser-allow-dialogs-to-get-focus =
+    .label = Allow notifications like this from { $domain } to take you to their tab
+
+tabbrowser-customizemode-tab-title = Customise { -brand-short-name }
+
+## Context menu buttons, of which only one will be visible at a time
+
+tabbrowser-context-mute-tab =
+    .label = Mute Tab
+    .accesskey = M
+tabbrowser-context-unmute-tab =
+    .label = Unmute Tab
+    .accesskey = m
+# The accesskey should match the accesskey for tabbrowser-context-mute-tab
+tabbrowser-context-mute-selected-tabs =
+    .label = Mute Tabs
+    .accesskey = M
+# The accesskey should match the accesskey for tabbrowser-context-unmute-tab
+tabbrowser-context-unmute-selected-tabs =
+    .label = Unmute Tabs
+    .accesskey = m
+
+# This string is used as an additional tooltip and accessibility description for tabs playing audio
+tabbrowser-tab-audio-playing-description = Playing audio
+
+## Ctrl-Tab dialog
+
+# Variables:
+#   $tabCount (Number): The number of tabs in the current browser window. It will always be 2 at least.
+tabbrowser-ctrl-tab-list-all-tabs =
+    .label = List All { $tabCount } Tabs
+
+## Tab manager menu buttons
+
+tabbrowser-manager-mute-tab =
+    .tooltiptext = Mute tab
+tabbrowser-manager-unmute-tab =
+    .tooltiptext = Unmute tab
+tabbrowser-manager-close-tab =
+    .tooltiptext = Close tab
diff --git a/l10n-en-GB/browser/browser/textRecognition.ftl b/l10n-en-GB/browser/browser/textRecognition.ftl
new file mode 100644
index 0000000000..93e07a53c8
--- /dev/null
+++ b/l10n-en-GB/browser/browser/textRecognition.ftl
@@ -0,0 +1,15 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+## Text recognition works through a modal that presents the text that is found
+## in an image, and copies the results to the clipboard.
+
+text-recognition-modal-searching-title = Searching image for text…
+text-recognition-modal-results-title = Text copied from image
+text-recognition-modal-no-results-title = Sorry, we couldn’t extract any text. Try a different image. <a data-l10n-name="error-link">Learn more</a>.
+text-recognition-modal-close-button = Close
+
+# The title of the the modal is only available to screen readers.
+text-recognition-modal-accessible-modal-title = Results for text extraction
diff --git a/l10n-en-GB/browser/browser/toolbarContextMenu.ftl b/l10n-en-GB/browser/browser/toolbarContextMenu.ftl
new file mode 100644
index 0000000000..dc97f53db6
--- /dev/null
+++ b/l10n-en-GB/browser/browser/toolbarContextMenu.ftl
@@ -0,0 +1,88 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+toolbar-context-menu-new-tab =
+    .label = New Tab
+    .accesskey = w
+toolbar-context-menu-reload-selected-tab =
+    .label = Reload Selected Tab
+    .accesskey = R
+toolbar-context-menu-reload-selected-tabs =
+    .label = Reload Selected Tabs
+    .accesskey = R
+toolbar-context-menu-bookmark-selected-tab =
+    .label = Bookmark Selected Tab…
+    .accesskey = T
+toolbar-context-menu-bookmark-selected-tabs =
+    .label = Bookmark Selected Tabs…
+    .accesskey = T
+toolbar-context-menu-select-all-tabs =
+    .label = Select All Tabs
+    .accesskey = S
+toolbar-context-menu-reopen-closed-tabs =
+    .label =
+        { $tabCount ->
+            [1] Reopen Closed Tab
+           *[other] Reopen Closed Tabs
+        }
+    .accesskey = o
+
+toolbar-context-menu-manage-extension =
+    .label = Manage Extension
+    .accesskey = E
+toolbar-context-menu-remove-extension =
+    .label = Remove Extension
+    .accesskey = v
+
+# This label is used in the extensions toolbar buttons context menus,
+# a user can use this command to submit to Mozilla an abuse report
+# related to that extension. "Report" is a verb.
+toolbar-context-menu-report-extension =
+    .label = Report Extension
+    .accesskey = o
+
+# Can appear on the same context menu as toolbar-context-menu-menu-bar-cmd
+# ("Menu Bar") and personalbarCmd ("Bookmarks Toolbar"), so they should
+# have different access keys.
+toolbar-context-menu-pin-to-overflow-menu =
+    .label = Pin to Overflow Menu
+    .accesskey = P
+toolbar-context-menu-auto-hide-downloads-button-2 =
+    .label = Hide Button When Empty
+    .accesskey = H
+toolbar-context-menu-always-open-downloads-panel =
+    .label = Show Panel When Download Begins
+    .accesskey = S
+toolbar-context-menu-remove-from-toolbar =
+    .label = Remove from Toolbar
+    .accesskey = R
+toolbar-context-menu-view-customize-toolbar =
+    .label = Customise…
+    .accesskey = C
+toolbar-context-menu-view-customize-toolbar-2 =
+    .label = Customise Toolbar…
+    .accesskey = C
+# This is only ever shown when toolbar-context-menu-pin-to-overflow-menu
+# is hidden, so they can share access keys.
+toolbar-context-menu-pin-to-toolbar =
+    .label = Pin to Toolbar
+    .accesskey = P
+
+toolbar-context-menu-bookmarks-toolbar-always-show-2 =
+    .label = Always Show
+    .accesskey = A
+toolbar-context-menu-bookmarks-toolbar-never-show-2 =
+    .label = Never Show
+    .accesskey = N
+toolbar-context-menu-bookmarks-toolbar-on-new-tab-2 =
+    .label = Only Show on New Tab
+    .accesskey = O
+
+toolbar-context-menu-bookmarks-show-other-bookmarks =
+    .label = Show Other Bookmarks
+    .accesskey = h
+
+toolbar-context-menu-menu-bar-cmd =
+    .toolbarname = Menu Bar
+    .accesskey = M
diff --git a/l10n-en-GB/browser/browser/touchbar/touchbar.ftl b/l10n-en-GB/browser/browser/touchbar/touchbar.ftl
new file mode 100644
index 0000000000..1d03b65f47
--- /dev/null
+++ b/l10n-en-GB/browser/browser/touchbar/touchbar.ftl
@@ -0,0 +1,38 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# Strings in this file are used to localize button titles displayed on the 
+# MacBook Touch Bar.
+back = Backwards
+forward = Forwards
+reload = Reload
+home = Home
+fullscreen = Fullscreen
+touchbar-fullscreen-exit = Exit Fullscreen
+find = Find
+new-tab = New tab
+add-bookmark = Add bookmark
+reader-view = Reader View
+# Meant to match the string displayed in an empty URL bar.
+open-location = Search or enter address
+share = Share
+close-window = Close Window
+open-sidebar = Sidebars
+
+# This string describes shortcuts for search.
+search-popover = Search shortcuts
+# Describes searches limited to a specific scope
+# (e.g. searching only in history).
+search-search-in = Search in:
+
+## Various categories of shortcuts for search.
+
+search-bookmarks = Bookmarks
+search-history = History
+search-opentabs = Open Tabs
+search-tags = Tags
+search-titles = Titles
+
+##
+
diff --git a/l10n-en-GB/browser/browser/translations.ftl b/l10n-en-GB/browser/browser/translations.ftl
new file mode 100644
index 0000000000..a84e7b7e94
--- /dev/null
+++ b/l10n-en-GB/browser/browser/translations.ftl
@@ -0,0 +1,172 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# The button for "Firefox Translations" in the url bar.
+urlbar-translations-button =
+    .tooltiptext = Translate this page
+# The button for "Firefox Translations" in the url bar. Note that here "Beta" should
+# not be translated, as it is a reflection of the un-localized BETA icon that is in the
+# panel.
+urlbar-translations-button2 =
+    .tooltiptext = Translate this page - Beta
+# Note that here "Beta" should not be translated, as it is a reflection of the
+# un-localized BETA icon that is in the panel.
+urlbar-translations-button-intro =
+    .tooltiptext = Try private translations in { -brand-shorter-name } - Beta
+# If your language requires declining the language name, a possible solution
+# is to adapt the structure of the phrase, or use a support noun, e.g.
+# `Page translated from: { $fromLanguage }. Current target language: { $toLanguage }`
+#
+# Variables:
+#   $fromLanguage (string) - The original language of the document.
+#   $toLanguage (string) - The target language of the translation.
+urlbar-translations-button-translated =
+    .tooltiptext = Page translated from { $fromLanguage } to { $toLanguage }
+urlbar-translations-button-loading =
+    .tooltiptext = Translation in progress
+translations-panel-settings-button =
+    .aria-label = Manage translation settings
+# Text displayed on a language dropdown when the language is in beta
+# Variables:
+#   $language (string) - The localized display name of the detected language
+translations-panel-displayname-beta =
+    .label = { $language } BETA
+
+## Options in the Firefox Translations settings.
+
+translations-panel-settings-manage-languages =
+    .label = Manage languages
+translations-panel-settings-about = About translations in { -brand-shorter-name }
+translations-panel-settings-about2 =
+    .label = About translations in { -brand-shorter-name }
+# Text displayed for the option to always translate a given language
+# Variables:
+#   $language (string) - The localized display name of the detected language
+translations-panel-settings-always-translate-language =
+    .label = Always translate { $language }
+translations-panel-settings-always-translate-unknown-language =
+    .label = Always translate this language
+translations-panel-settings-always-offer-translation =
+    .label = Always offer to translate
+# Text displayed for the option to never translate a given language
+# Variables:
+#   $language (string) - The localized display name of the detected language
+translations-panel-settings-never-translate-language =
+    .label = Never translate { $language }
+translations-panel-settings-never-translate-unknown-language =
+    .label = Never translate this language
+# Text displayed for the option to never translate this website
+translations-panel-settings-never-translate-site =
+    .label = Never translate this site
+
+## The translation panel appears from the url bar, and this view is the default
+## translation view.
+
+translations-panel-header = Translate this page?
+translations-panel-translate-button =
+    .label = Translate
+translations-panel-translate-button-loading =
+    .label = Please wait…
+translations-panel-translate-cancel =
+    .label = Cancel
+translations-panel-learn-more-link = Learn more
+translations-panel-intro-header = Try private translations in { -brand-shorter-name }
+translations-panel-intro-description = For your privacy, translations never leave your device. New languages and improvements coming soon!
+translations-panel-error-translating = There was a problem translating. Please try again.
+translations-panel-error-load-languages = Couldn’t load languages
+translations-panel-error-load-languages-hint = Check your internet connection and try again.
+translations-panel-error-load-languages-hint-button =
+    .label = Try again
+translations-panel-error-unsupported = Translation isn’t available for this page
+translations-panel-error-dismiss-button =
+    .label = Got it
+translations-panel-error-change-button =
+    .label = Change source language
+# If your language requires declining the language name, a possible solution
+# is to adapt the structure of the phrase, or use a support noun, e.g.
+# `Sorry, we don't support the language yet: { $language }
+#
+# Variables:
+#   $language (string) - The language of the document.
+translations-panel-error-unsupported-hint-known = Sorry, we don’t support { $language } yet.
+translations-panel-error-unsupported-hint-unknown = Sorry, we don’t support this language yet.
+
+## Each label is followed, on a new line, by a dropdown list of language names.
+## If this structure is problematic for your locale, an alternative way is to
+## translate them as `Source language:` and `Target language:`
+
+translations-panel-from-label = Translate from
+translations-panel-to-label = Translate to
+
+## The translation panel appears from the url bar, and this view is the "restore" view
+## that lets a user restore a page to the original language, or translate into another
+## language.
+
+# If your language requires declining the language name, a possible solution
+# is to adapt the structure of the phrase, or use a support noun, e.g.
+# `The page is translated from: { $fromLanguage }. Current target language: { $toLanguage }`
+#
+# Variables:
+#   $fromLanguage (string) - The original language of the document.
+#   $toLanguage (string) - The target language of the translation.
+translations-panel-revisit-header = This page is translated from { $fromLanguage } to { $toLanguage }
+translations-panel-choose-language =
+    .label = Choose a language
+translations-panel-restore-button =
+    .label = Show original
+
+## Firefox Translations language management in about:preferences.
+
+translations-manage-header = Translations
+translations-manage-settings-button =
+    .label = Settings…
+    .accesskey = t
+translations-manage-description = Download languages for offline translation.
+translations-manage-all-language = All languages
+translations-manage-download-button = Download
+translations-manage-delete-button = Delete
+translations-manage-error-download = There was a problem downloading the language files. Please try again.
+translations-manage-error-delete = There was an error deleting the language files. Please try again.
+translations-manage-intro = Set your language and site translation preferences and manage languages installed for offline translation.
+translations-manage-install-description = Install languages for offline translation
+translations-manage-language-install-button =
+    .label = Install
+translations-manage-language-install-all-button =
+    .label = Install all
+    .accesskey = I
+translations-manage-language-remove-button =
+    .label = Remove
+translations-manage-language-remove-all-button =
+    .label = Remove all
+    .accesskey = e
+translations-manage-error-install = There was a problem installing the language files. Please try again.
+translations-manage-error-remove = There was an error removing the language files. Please try again.
+translations-manage-error-list = Failed to get the list of available languages for translation. Refresh the page to try again.
+translations-settings-title =
+    .title = Translations Settings
+    .style = min-width: 36em
+translations-settings-close-key =
+    .key = w
+translations-settings-always-translate-langs-description = Translation will happen automatically for the following languages
+translations-settings-never-translate-langs-description = Translation will not be offered for the following languages
+translations-settings-never-translate-sites-description = Translation will not be offered for the following sites
+translations-settings-languages-column =
+    .label = Languages
+translations-settings-remove-language-button =
+    .label = Remove Language
+    .accesskey = R
+translations-settings-remove-all-languages-button =
+    .label = Remove All Languages
+    .accesskey = e
+translations-settings-sites-column =
+    .label = Web Sites
+translations-settings-remove-site-button =
+    .label = Remove Site
+    .accesskey = S
+translations-settings-remove-all-sites-button =
+    .label = Remove All Sites
+    .accesskey = m
+translations-settings-close-dialog =
+    .buttonlabelaccept = Close
+    .buttonaccesskeyaccept = C
diff --git a/l10n-en-GB/browser/browser/unifiedExtensions.ftl b/l10n-en-GB/browser/browser/unifiedExtensions.ftl
new file mode 100644
index 0000000000..dfa3f6ee4c
--- /dev/null
+++ b/l10n-en-GB/browser/browser/unifiedExtensions.ftl
@@ -0,0 +1,50 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+### These strings appear in the Unified Extensions panel.
+
+
+## Panel
+
+unified-extensions-header-title = Extensions
+unified-extensions-manage-extensions =
+    .label = Manage extensions
+
+## An extension in the main list
+
+# Each extension in the unified extensions panel (list) has a secondary button
+# to open a context menu. This string is used for each of these buttons.
+# Variables:
+#   $extensionName (String) - Name of the extension
+unified-extensions-item-open-menu =
+    .aria-label = Open menu for { $extensionName }
+unified-extensions-item-message-manage = Manage extension
+
+## Extension's context menu
+
+unified-extensions-context-menu-pin-to-toolbar =
+    .label = Pin to Toolbar
+unified-extensions-context-menu-manage-extension =
+    .label = Manage Extension
+unified-extensions-context-menu-remove-extension =
+    .label = Remove Extension
+unified-extensions-context-menu-report-extension =
+    .label = Report Extension
+unified-extensions-context-menu-move-widget-up =
+    .label = Move Up
+unified-extensions-context-menu-move-widget-down =
+    .label = Move Down
+
+## Notifications
+
+unified-extensions-mb-quarantined-domain-title = Some extensions are not allowed
+unified-extensions-mb-quarantined-domain-message = Only some extensions monitored by { -vendor-short-name } are allowed on this site to protect your data.
+unified-extensions-mb-quarantined-domain-message-2 = To protect your data, some extensions can’t read or change data on this site. Use the extension’s settings to allow on sites restricted by { -vendor-short-name }.
+# .heading is processed by moz-message-bar to be used as a heading attribute
+unified-extensions-mb-quarantined-domain-message-3 =
+    .heading = Some extensions are not allowed
+    .message = To protect your data, some extensions can’t read or change data on this site. Use the extension’s settings to allow on sites restricted by { -vendor-short-name }.
+unified-extensions-mb-quarantined-domain-learn-more = Learn more
+    .aria-label = Learn more: Some extensions are not allowed
diff --git a/l10n-en-GB/browser/browser/webProtocolHandler.ftl b/l10n-en-GB/browser/browser/webProtocolHandler.ftl
new file mode 100644
index 0000000000..db046b55ce
--- /dev/null
+++ b/l10n-en-GB/browser/browser/webProtocolHandler.ftl
@@ -0,0 +1,22 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+protocolhandler-mailto-os-handler-notificationbox = Always use { -brand-short-name } to open links that send email?
+protocolhandler-mailto-os-handler-yes-confirm = { -brand-short-name } is now your default application for opening links that send email.
+protocolhandler-mailto-os-handler-yes-button = Set as default
+protocolhandler-mailto-os-handler-no-button = Not now
+# Variables:
+#  $url (String): The url of a webmailer, but only its full domain name.
+protocolhandler-mailto-handler-notificationbox = Open email links using { $url }?
+
+## Variables:
+##  $url (String): The url of a webmailer, but only its full domain name.
+
+protocolhandler-mailto-handler-notificationbox-always = Always open email links using { $url }?
+protocolhandler-mailto-handler-yes-confirm = { $url } is now your default site for opening links that send email.
+
+##
+
+protocolhandler-mailto-handler-yes-button = Set as default
+protocolhandler-mailto-handler-no-button = Not now
diff --git a/l10n-en-GB/browser/browser/webauthnDialog.ftl b/l10n-en-GB/browser/browser/webauthnDialog.ftl
new file mode 100644
index 0000000000..e4e5a7ba02
--- /dev/null
+++ b/l10n-en-GB/browser/browser/webauthnDialog.ftl
@@ -0,0 +1,27 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# Variables:
+#  $retriesLeft (Number): number of tries left
+webauthn-pin-invalid-long-prompt =
+    { $retriesLeft ->
+        [one] Incorrect PIN. You have { $retriesLeft } attempt left before you permanently lose access to the credentials on this device.
+       *[other] Incorrect PIN. You have { $retriesLeft } attempts left before you permanently lose access to the credentials on this device.
+    }
+webauthn-pin-invalid-short-prompt = Incorrect PIN. Try again.
+webauthn-pin-required-prompt = Please enter the PIN for your device.
+webauthn-select-sign-result-unknown-account = Unknown account
+webauthn-a-passkey-label = Use a passkey
+webauthn-another-passkey-label = Use another passkey
+# Variables:
+#   $domain (String): the domain of the site.
+webauthn-specific-passkey-label = Passkey for { $domain }
+# Variables:
+#  $retriesLeft (Number): number of tries left
+webauthn-uv-invalid-long-prompt =
+    { $retriesLeft ->
+        [one] User verification failed. You have { $retriesLeft } attempt left. Try again.
+       *[other] User verification failed. You have { $retriesLeft } attempts left. Try again.
+    }
+webauthn-uv-invalid-short-prompt = User verification failed. Try again.
diff --git a/l10n-en-GB/browser/browser/webrtcIndicator.ftl b/l10n-en-GB/browser/browser/webrtcIndicator.ftl
new file mode 100644
index 0000000000..a799c6d7b7
--- /dev/null
+++ b/l10n-en-GB/browser/browser/webrtcIndicator.ftl
@@ -0,0 +1,227 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+# Note: This is currently placed under browser/base/content so that we can
+# get the strings to appear without having our localization community need
+# to go through and translate everything. Once these strings are ready for
+# translation, we'll move it to the locales folder.
+
+
+## These strings are used so that the window has a title in tools that
+## enumerate/look for window titles. It is not normally visible anywhere.
+
+webrtc-indicator-title = { -brand-short-name } — Sharing Indicator
+webrtc-indicator-window =
+    .title = { -brand-short-name } — Sharing Indicator
+
+## Used as list items in sharing menu
+
+webrtc-item-camera = camera
+webrtc-item-microphone = microphone
+webrtc-item-audio-capture = tab audio
+webrtc-item-application = application
+webrtc-item-screen = screen
+webrtc-item-window = window
+webrtc-item-browser = tab
+
+##
+
+# This is used for the website origin for the sharing menu if no readable origin could be deduced from the URL.
+webrtc-sharing-menuitem-unknown-host = Unknown origin
+
+# Variables:
+#   $origin (String): The website origin (e.g. www.mozilla.org)
+#   $itemList (String): A formatted list of items (e.g. "camera, microphone and tab audio")
+webrtc-sharing-menuitem =
+    .label = { $origin } ({ $itemList })
+webrtc-sharing-menu =
+    .label = Tabs sharing devices
+    .accesskey = d
+
+webrtc-sharing-window = You are sharing another application window.
+webrtc-sharing-browser-window = You are sharing { -brand-short-name }.
+webrtc-sharing-screen = You are sharing your entire screen.
+webrtc-stop-sharing-button = Stop Sharing
+webrtc-microphone-unmuted =
+    .title = Turn microphone off
+webrtc-microphone-muted =
+    .title = Turn microphone on
+webrtc-camera-unmuted =
+    .title = Turn camera off
+webrtc-camera-muted =
+    .title = Turn camera on
+webrtc-minimize =
+    .title = Minimise indicator
+
+## These strings will display as a tooltip on supported systems where we show
+## device sharing state in the OS notification area. We do not use these strings
+## on macOS, as global menu bar items do not have native tooltips.
+
+webrtc-camera-system-menu =
+    .label = You are sharing your camera. Click to control sharing.
+webrtc-microphone-system-menu =
+    .label = You are sharing your microphone. Click to control sharing.
+webrtc-screen-system-menu =
+    .label = You are sharing a window or a screen. Click to control sharing.
+
+## Tooltips used by the legacy global sharing indicator
+
+webrtc-indicator-sharing-camera-and-microphone =
+    .tooltiptext = Your camera and microphone are being shared. Click to control sharing.
+webrtc-indicator-sharing-camera =
+    .tooltiptext = Your camera is being shared. Click to control sharing.
+webrtc-indicator-sharing-microphone =
+    .tooltiptext = Your microphone is being shared. Click to control sharing.
+webrtc-indicator-sharing-application =
+    .tooltiptext = An application is being shared. Click to control sharing.
+webrtc-indicator-sharing-screen =
+    .tooltiptext = Your screen is being shared. Click to control sharing.
+webrtc-indicator-sharing-window =
+    .tooltiptext = A window is being shared. Click to control sharing.
+webrtc-indicator-sharing-browser =
+    .tooltiptext = A tab is being shared. Click to control sharing.
+
+## These strings are only used on Mac for menus attached to icons
+## near the clock on the mac menubar.
+## Variables:
+##   $streamTitle (String): the title of the tab using the share.
+##   $tabCount (Number): the title of the tab using the share.
+
+webrtc-indicator-menuitem-control-sharing =
+    .label = Control Sharing
+webrtc-indicator-menuitem-control-sharing-on =
+    .label = Control Sharing on “{ $streamTitle }”
+
+webrtc-indicator-menuitem-sharing-camera-with =
+    .label = Sharing Camera with “{ $streamTitle }”
+webrtc-indicator-menuitem-sharing-camera-with-n-tabs =
+    .label =
+        { $tabCount ->
+            [one] Sharing Camera with { $tabCount } tab
+           *[other] Sharing Camera with { $tabCount } tabs
+        }
+
+webrtc-indicator-menuitem-sharing-microphone-with =
+    .label = Sharing Microphone with “{ $streamTitle }”
+webrtc-indicator-menuitem-sharing-microphone-with-n-tabs =
+    .label =
+        { $tabCount ->
+            [one] Sharing Microphone with { $tabCount } tab
+           *[other] Sharing Microphone with { $tabCount } tabs
+        }
+
+webrtc-indicator-menuitem-sharing-application-with =
+    .label = Sharing an Application with “{ $streamTitle }”
+webrtc-indicator-menuitem-sharing-application-with-n-tabs =
+    .label =
+        { $tabCount ->
+            [one] Sharing an Application with { $tabCount } tab
+           *[other] Sharing Applications with { $tabCount } tabs
+        }
+
+webrtc-indicator-menuitem-sharing-screen-with =
+    .label = Sharing Screen with “{ $streamTitle }”
+webrtc-indicator-menuitem-sharing-screen-with-n-tabs =
+    .label =
+        { $tabCount ->
+            [one] Sharing Screen with { $tabCount } tab
+           *[other] Sharing Screen with { $tabCount } tabs
+        }
+
+webrtc-indicator-menuitem-sharing-window-with =
+    .label = Sharing a Window with “{ $streamTitle }”
+webrtc-indicator-menuitem-sharing-window-with-n-tabs =
+    .label =
+        { $tabCount ->
+            [one] Sharing a Window with { $tabCount } tab
+           *[other] Sharing Windows with { $tabCount } tabs
+        }
+
+webrtc-indicator-menuitem-sharing-browser-with =
+    .label = Sharing a Tab with “{ $streamTitle }”
+# This message is shown when the contents of a tab is shared during a WebRTC
+# session, which currently is only possible with Loop/Hello.
+webrtc-indicator-menuitem-sharing-browser-with-n-tabs =
+    .label =
+        { $tabCount ->
+            [one] Sharing a Tab with { $tabCount } tab
+           *[other] Sharing Tabs with { $tabCount } tabs
+        }
+
+## Variables:
+##   $origin (String): the website origin (e.g. www.mozilla.org).
+
+webrtc-allow-share-audio-capture = Allow { $origin } to listen to this tab’s audio?
+webrtc-allow-share-camera = Allow { $origin } to use your camera?
+webrtc-allow-share-microphone = Allow { $origin } to use your microphone?
+webrtc-allow-share-screen = Allow { $origin } to see your screen?
+# "Speakers" is used in a general sense that might include headphones or
+# another audio output connection.
+webrtc-allow-share-speaker = Allow { $origin } to use other speakers?
+webrtc-allow-share-camera-and-microphone = Allow { $origin } to use your camera and microphone?
+webrtc-allow-share-camera-and-audio-capture = Allow { $origin } to use your camera and listen to this tab’s audio?
+webrtc-allow-share-screen-and-microphone = Allow { $origin } to use your microphone and see your screen?
+webrtc-allow-share-screen-and-audio-capture = Allow { $origin } to listen to this tab’s audio and see your screen?
+
+## Variables:
+##   $origin (String): the first party origin.
+##   $thirdParty (String): the third party origin.
+
+webrtc-allow-share-audio-capture-unsafe-delegation = Allow { $origin } to give { $thirdParty } permission to listen to this tab’s audio?
+webrtc-allow-share-camera-unsafe-delegation = Allow { $origin } to give { $thirdParty } access to your camera?
+webrtc-allow-share-microphone-unsafe-delegation = Allow { $origin } to give { $thirdParty } access to your microphone?
+webrtc-allow-share-screen-unsafe-delegation = Allow { $origin } to give { $thirdParty } permission to see your screen?
+# "Speakers" is used in a general sense that might include headphones or
+# another audio output connection.
+webrtc-allow-share-speaker-unsafe-delegation = Allow { $origin } to give { $thirdParty } access to other speakers?
+webrtc-allow-share-camera-and-microphone-unsafe-delegation = Allow { $origin } to give { $thirdParty } access to your camera and microphone?
+webrtc-allow-share-camera-and-audio-capture-unsafe-delegation = Allow { $origin } to give { $thirdParty } access to your camera and listen to this tab’s audio?
+webrtc-allow-share-screen-and-microphone-unsafe-delegation = Allow { $origin } to give { $thirdParty } access to your microphone and see your screen?
+webrtc-allow-share-screen-and-audio-capture-unsafe-delegation = Allow { $origin } to give { $thirdParty } permission to listen to this tab’s audio and see your screen?
+
+##
+
+webrtc-share-screen-warning = Only share screens with sites you trust. Sharing can allow deceptive sites to browse as you and steal your private data.
+webrtc-share-browser-warning = Only share { -brand-short-name } with sites you trust. Sharing can allow deceptive sites to browse as you and steal your private data.
+
+webrtc-share-screen-learn-more = Learn more
+webrtc-pick-window-or-screen = Select window or screen
+webrtc-share-entire-screen = Entire screen
+webrtc-share-pipe-wire-portal = Use operating system settings
+# Variables:
+#   $monitorIndex (String): screen number (digits 1, 2, etc).
+webrtc-share-monitor = Screen { $monitorIndex }
+# Variables:
+#   $windowCount (Number): the number of windows currently displayed by the application.
+#   $appName (String): the name of the application.
+webrtc-share-application =
+    { $windowCount ->
+        [one] { $appName } ({ $windowCount } window)
+       *[other] { $appName } ({ $windowCount } windows)
+    }
+
+## These buttons are the possible answers to the various prompts in the "webrtc-allow-share-*" strings.
+
+webrtc-action-allow =
+    .label = Allow
+    .accesskey = A
+webrtc-action-block =
+    .label = Block
+    .accesskey = B
+webrtc-action-always-block =
+    .label = Always block
+    .accesskey = w
+webrtc-action-not-now =
+    .label = Not now
+    .accesskey = N
+
+##
+
+webrtc-remember-allow-checkbox = Remember this decision
+webrtc-mute-notifications-checkbox = Mute web site notifications while sharing
+
+webrtc-reason-for-no-permanent-allow-screen = { -brand-short-name } can not allow permanent access to your screen.
+webrtc-reason-for-no-permanent-allow-audio = { -brand-short-name } can not allow permanent access to your tab’s audio without asking which tab to share.
+webrtc-reason-for-no-permanent-allow-insecure = Your connection to this site is not secure. To protect you, { -brand-short-name } will only allow access for this session.
diff --git a/l10n-en-GB/browser/chrome/browser/browser.properties b/l10n-en-GB/browser/chrome/browser/browser.properties
new file mode 100644
index 0000000000..13c75ef4ae
--- /dev/null
+++ b/l10n-en-GB/browser/chrome/browser/browser.properties
@@ -0,0 +1,532 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+nv_timeout=Timed Out
+openFile=Open File
+
+droponhometitle=Set Home Page
+droponhomemsg=Do you want this document to be your new home page?
+droponhomemsgMultiple=Do you want these documents to be your new home pages?
+
+# context menu strings
+
+# LOCALIZATION NOTE (contextMenuSearch): %1$S is the search engine,
+# %2$S is the selection string.
+contextMenuSearch=Search %1$S for “%2$S”
+contextMenuSearch.accesskey=S
+contextMenuPrivateSearch=Search in a Private Window
+contextMenuPrivateSearch.accesskey=h
+# LOCALIZATION NOTE (contextMenuPrivateSearchOtherEngine): %S is the search
+# engine name as set for Private Browsing mode. This label is only used when
+# this engine is different from the default engine name used in normal mode.
+contextMenuPrivateSearchOtherEngine=Search with %S in a Private Window
+contextMenuPrivateSearchOtherEngine.accesskey=h
+
+# bookmark dialog strings
+
+bookmarkAllTabsDefault=[Folder Name]
+
+unsignedAddonsDisabled.message=One or more installed add-ons cannot be verified and have been disabled.
+unsignedAddonsDisabled.learnMore.label=Learn More
+unsignedAddonsDisabled.learnMore.accesskey=L
+
+# LOCALIZATION NOTE (geolocationLastAccessIndicatorText): %S is the relative time of the most recent geolocation access (e.g. 5 min. ago)
+geolocationLastAccessIndicatorText=Last access %S
+
+# LOCALIZATION NOTE (openProtocolHandlerPermissionEntryLabel): %S is the scheme of the protocol the site may open an application for. For example: mailto
+openProtocolHandlerPermissionEntryLabel=%S:// links
+
+crashedpluginsMessage.title=The %S plugin has crashed.
+crashedpluginsMessage.reloadButton.label=Reload page
+crashedpluginsMessage.reloadButton.accesskey=R
+crashedpluginsMessage.submitButton.label=Submit a crash report
+crashedpluginsMessage.submitButton.accesskey=S
+crashedpluginsMessage.learnMore=Learn More…
+
+# Keyword fixup messages
+# LOCALIZATION NOTE (keywordURIFixup.message): Used when the user tries to visit
+# a local host page, by the time the DNS request recognizes it, we have already
+# loaded a search page for the given word.  An infobar then asks to the user
+# whether he rather wanted to visit the host.  %S is the recognized host.
+keywordURIFixup.message=Did you mean to go to %S?
+keywordURIFixup.goTo=Yes, take me to %S
+keywordURIFixup.goTo.accesskey=Y
+
+# Sanitize
+# LOCALIZATION NOTE (update.downloadAndInstallButton.label): %S is replaced by the
+# version of the update: "Update to 28.0".
+update.downloadAndInstallButton.label=Update to %S
+update.downloadAndInstallButton.accesskey=U
+
+menuOpenAllInTabs.label=Open All in Tabs
+
+# Unified Back-/Forward Popup
+tabHistory.reloadCurrent=Reload this page
+tabHistory.goBack=Go backwards to this page
+tabHistory.goForward=Go forwards to this page
+
+# URL Bar
+pasteAndGo.label=Paste and Go
+# LOCALIZATION NOTE (reloadButton.tooltip):
+# %S is the keyboard shortcut for reloading the current page
+reloadButton.tooltip=Reload current page (%S)
+# LOCALIZATION NOTE (stopButton.tooltip):
+# %S is the keyboard shortcut for stopping loading the page
+stopButton.tooltip=Stop loading this page (%S)
+# LOCALIZATION NOTE (urlbar-zoom-button.tooltip):
+# %S is the keyboard shortcut for resetting the zoom level to 100%
+urlbar-zoom-button.tooltip=Reset zoom level (%S)
+# LOCALIZATION NOTE (reader-mode-button.tooltip):
+# %S is the keyboard shortcut for entering/exiting reader view
+reader-mode-button.tooltip=Toggle reader view (%S)
+
+# LOCALIZATION NOTE(zoom-button.label): %S is the current page zoom level,
+# %% will be displayed as a single % character (% is commonly used to define
+# format specifiers, so it needs to be escaped).
+zoom-button.label = %S%%
+
+# General bookmarks button
+# LOCALIZATION NOTE (bookmarksMenuButton.tooltip):
+# %S is the keyboard shortcut for "Show All Bookmarks"
+bookmarksMenuButton.tooltip=Show your bookmarks (%S)
+
+# Downloads button tooltip
+# LOCALIZATION NOTE (downloads.tooltip):
+# %S is the keyboard shortcut for "Downloads"
+downloads.tooltip=Display the progress of ongoing downloads (%S)
+
+# New Window button tooltip
+# LOCALIZATION NOTE (newWindowButton.tooltip):
+# %S is the keyboard shortcut for "New Window"
+newWindowButton.tooltip=Open a new window (%S)
+
+# New Tab button tooltip
+# LOCALIZATION NOTE (newTabButton.tooltip):
+# %S is the keyboard shortcut for "New Tab"
+newTabButton.tooltip=Open a new tab (%S)
+newTabContainer.tooltip=Open a new tab (%S)\nPress and hold to open a new container tab
+newTabAlwaysContainer.tooltip=Select container to open a new tab
+
+# Canvas permission prompt
+# LOCALIZATION NOTE (canvas.siteprompt2): %S is hostname
+canvas.siteprompt2=Allow %S to use your HTML5 canvas image data?
+canvas.siteprompt2.warning=This may be used to uniquely identify your computer.
+canvas.block=Block
+canvas.block.accesskey=B
+canvas.allow2=Allow
+canvas.allow2.accesskey=A
+canvas.remember2=Remember this decision
+
+# WebAuthn prompts
+# LOCALIZATION NOTE (webauthn.userPresence): %S is hostname
+webauthn.userPresencePrompt=Touch your security key to continue with %S.
+# LOCALIZATION NOTE (webauthn.registerDirectPrompt3):
+# %S is hostname.
+# The website is asking for extended information about your
+# hardware authenticator that shouldn't be generally necessary. Permitting
+# this is safe if you only use one account at this website. If you have
+# multiple accounts at this website, and you use the same hardware
+# authenticator, then the website could link those accounts together.
+# And this is true even if you use a different profile / browser (or even Tor
+# Browser). To avoid this, you should use different hardware authenticators
+# for different accounts on this website.
+webauthn.registerDirectPrompt3=%S is requesting extended information about your security key, which may affect your privacy.
+# LOCALIZATION NOTE (webauthn.registerDirectPromptHint):
+# %S is brandShortName
+webauthn.registerDirectPromptHint=%S can anonymise this for you, but the web site might decline this key. If declined, you can try again.
+# LOCALIZATION NOTE (webauthn.selectSignResultPrompt): %S is hostname
+webauthn.selectSignResultPrompt=Multiple accounts found for %S. Select which to use or cancel.
+# LOCALIZATION NOTE (webauthn.selectDevicePrompt): %S is hostname
+webauthn.selectDevicePrompt=Multiple devices found for %S. Please select one.
+# LOCALIZATION NOTE (webauthn.deviceBlockedPrompt): %S is hostname
+webauthn.deviceBlockedPrompt=User verification failed on %S. There are no attempts left and your device has been locked, because the wrong PIN was provided too many times. The device needs a reset.
+# LOCALIZATION NOTE (webauthn.pinAuthBlockedPrompt): %S is hostname
+webauthn.pinAuthBlockedPrompt=User verification failed on %S. There were too many failed attempts in a row and PIN authentication has been temporarily blocked. Your device needs a power cycle (unplug and re-insert).
+# LOCALIZATION NOTE (webauthn.pinNotSetPrompt): %S is hostname
+webauthn.pinNotSetPrompt=User verification failed on %S. You may need to set a PIN on your device.
+# LOCALIZATION NOTE (webauthn.uvBlockedPrompt): %S is hostname
+webauthn.uvBlockedPrompt=User verification failed on %S. There were too many failed attempts and the built-in user verification method has been blocked.
+webauthn.alreadyRegisteredPrompt=This device is already registered. Try a different device.
+webauthn.cancel=Cancel
+webauthn.cancel.accesskey=C
+webauthn.proceed=Proceed
+webauthn.proceed.accesskey=P
+webauthn.anonymize=Anonymise anyway
+
+# Spoof Accept-Language prompt
+privacy.spoof_english=Changing your language setting to English will make you more difficult to identify and enhance your privacy. Do you want to request English language versions of web pages?
+
+# LOCALIZATION NOTE (identity.identified.verifier, identity.identified.state_and_country, identity.ev.contentOwner2):
+# %S is the hostname of the site that is being displayed.
+identity.identified.verifier=Verified by: %S
+identity.identified.verified_by_you=You have added a security exception for this site.
+identity.identified.state_and_country=%S, %S
+identity.ev.contentOwner2=Certificate issued to: %S
+
+# LOCALIZATION NOTE (identity.notSecure.label):
+# Keep this string as short as possible, this is displayed in the URL bar
+# use a synonym for "safe" or "private" if "secure" is too long.
+identity.notSecure.label=Not Secure
+identity.notSecure.tooltip=Connection is not secure
+
+identity.extension.label=Extension (%S)
+identity.extension.tooltip=Loaded by extension: %S
+
+# LOCALIZATION NOTE (contentBlocking.trackersView.blocked.label):
+#   This label is shown next to a tracker in the trackers subview.
+#   It forms the end of the (imaginary) sentence "www.example.com [was] Blocked"
+contentBlocking.trackersView.blocked.label=Blocked
+
+contentBlocking.trackersView.empty.label=None detected on this site
+
+# LOCALIZATION NOTE (contentBlocking.cookies.blockingTrackers.label, contentBlocking.cookies.blocking3rdParty.label,
+#   contentBlocking.cookies.blockingUnvisited.label,contentBlocking.cookies.blockingAll.label):
+contentBlocking.cookies.blockingTrackers3.label=Cross-Site Tracking Cookies
+contentBlocking.cookies.blocking3rdParty2.label=Third-Party Cookies
+contentBlocking.cookies.blockingUnvisited2.label=Unvisited Site Cookies
+contentBlocking.cookies.blockingAll2.label=All Cookies
+
+contentBlocking.cookiesView.firstParty.label=From This Site
+# LOCALIZATION NOTE (contentBlocking.cookiesView.firstParty.empty.label):
+#  This references the header from contentBlocking.cookiesView.firstParty.label:
+#  "[Cookies] From This Site: None detected on this site".
+contentBlocking.cookiesView.firstParty.empty.label=None detected on this site
+
+contentBlocking.cookiesView.trackers2.label=Cross-Site Tracking Cookies
+# LOCALIZATION NOTE (contentBlocking.cookiesView.trackers.empty.label):
+#  This references the header from contentBlocking.cookiesView.trackers.label:
+#  "Tracking Cookies: None detected on this site".
+contentBlocking.cookiesView.trackers.empty.label=None detected on this site
+
+contentBlocking.cookiesView.thirdParty.label=Third-Party Cookies
+# LOCALIZATION NOTE (contentBlocking.cookiesView.thirdParty.empty.label):
+#  This references the header from contentBlocking.cookiesView.thirdParty.label:
+#  "Third-Party Cookies: None detected on this site".
+contentBlocking.cookiesView.thirdParty.empty.label=None detected on this site
+
+# LOCALIZATION NOTE (contentBlocking.cookiesView.allowed.label):
+#   This label is shown next to a cookie origin in the cookies subview.
+#   It forms the end of the (imaginary) sentence "www.example.com [was] Allowed"
+contentBlocking.cookiesView.allowed.label=Allowed
+# LOCALIZATION NOTE (contentBlocking.cookiesView.blocked.label):
+#   This label is shown next to a cookie origin in the cookies subview.
+#   It forms the end of the (imaginary) sentence "www.example.com [was] Blocked"
+contentBlocking.cookiesView.blocked.label=Blocked
+# LOCALIZATION NOTE (contentBlocking.cookiesView.removeButton.tooltip): %S is the domain of the site.
+contentBlocking.cookiesView.removeButton.tooltip=Clear cookie exception for %S
+
+# LOCALIZATION NOTE (contentBlocking.fingerprintersView.blocked.label):
+#   This label is shown next to a fingerprinter in the fingerprinters subview.
+#   It forms the end of the (imaginary) sentence "www.example.com [was] Blocked"
+contentBlocking.fingerprintersView.blocked.label=Blocked
+
+# LOCALIZATION NOTE (contentBlocking.cryptominersView.blocked.label):
+#   This label is shown next to a cryptominer in the cryptominers subview.
+#   It forms the end of the (imaginary) sentence "www.example.com [was] Blocked"
+contentBlocking.cryptominersView.blocked.label=Blocked
+
+trackingProtection.icon.activeTooltip2=Blocking social media trackers, cross-site tracking cookies, and fingerprinters.
+trackingProtection.icon.disabledTooltip2=Enhanced Tracking Protection is OFF for this site.
+# LOCALIZATION NOTE (trackingProtection.icon.noTrackersDetectedTooltip): %S is brandShortName.
+trackingProtection.icon.noTrackersDetectedTooltip=No trackers known to %S were detected on this page.
+
+# LOCALIZATION NOTE (protections.header):
+# Header of the Protections Panel. %S is replaced with the site's hostname.
+protections.header=Protections for %S
+
+# LOCALIZATION NOTE (protections.disableAriaLabel):
+# Text that gets spoken by a screen reader if the button will disable protections.
+# %s is the site's hostname.
+protections.disableAriaLabel=Disable protections for %S
+
+# LOCALIZATION NOTE (protections.enableAriaLabel):
+# Text that gets spoken by a screen reader if the button will enable protections.
+# %s is the site's hostname.
+protections.enableAriaLabel=Enable protections for %S
+
+# Blocking and Not Blocking sub-views in the Protections Panel
+protections.blocking.fingerprinters.title=Fingerprinters Blocked
+protections.blocking.cryptominers.title=Cryptominers Blocked
+protections.blocking.cookies.trackers.title=Cross-Site Tracking Cookies Blocked
+protections.blocking.cookies.3rdParty.title=Third-Party Cookies Blocked
+protections.blocking.cookies.all.title=All Cookies Blocked
+protections.blocking.cookies.unvisited.title=Unvisited Site Cookies Blocked
+protections.blocking.trackingContent.title=Tracking Content Blocked
+protections.blocking.socialMediaTrackers.title=Social Media Trackers Blocked
+protections.notBlocking.fingerprinters.title=Not Blocking Fingerprinters
+protections.notBlocking.cryptominers.title=Not Blocking Cryptominers
+protections.notBlocking.cookies.3rdParty.title=Not Blocking Third-Party Cookies
+protections.notBlocking.cookies.all.title=Not Blocking Cookies
+protections.notBlocking.crossSiteTrackingCookies.title=Not Blocking Cross-Site Tracking Cookies
+protections.notBlocking.trackingContent.title=Not Blocking Tracking Content
+protections.notBlocking.socialMediaTrackers.title=Not Blocking Social Media Trackers
+
+# Footer section in the Protections Panel
+# LOCALIZATION NOTE (protections.footer.blockedTrackerCounter.description,
+# protections.footer.blockedTrackerCounter.tooltip):
+#   This text indicates the total number of trackers blocked on all sites. In
+#   its tooltip, we show the date when we started counting this number.
+# LOCALIZATION NOTE (protections.footer.blockedTrackerCounter.description):
+#   Semicolon-separated list of plural forms.
+#   See: http://developer.mozilla.org/en/docs/Localization_and_Plurals
+#   Replacement for #1 is a locale-string converted positive integer.
+protections.footer.blockedTrackerCounter.description=#1 Blocked;#1 Blocked
+# LOCALIZATION NOTE (protections.footer.blockedTrackerCounter.tooltip):
+#   %S is the date on which we started counting (e.g., July 17, 2019).
+protections.footer.blockedTrackerCounter.tooltip=Since %S
+
+# Milestones section in the Protections Panel
+# LOCALIZATION NOTE (protections.milestone.description):
+#   Semicolon-separated list of plural forms.
+#   See: http://developer.mozilla.org/en/docs/Localization_and_Plurals
+#   #1 is replaced with brandShortName.
+#   #2 is replaced with the (locale-formatted) number of trackers blocked
+#   #3 is replaced by a locale-formatted date with short month and numeric year.
+#   In English this looks like "Firefox blocked over 10,000 trackers since Oct 2019"
+protections.milestone.description=#1 blocked #2 tracker since #3;#1 blocked over #2 trackers since #3
+
+# Application menu
+
+# LOCALIZATION NOTE(zoomReduce-button.tooltip): %S is the keyboard shortcut.
+zoomReduce-button.tooltip = Zoom out (%S)
+# LOCALIZATION NOTE(zoomReset-button.tooltip): %S is the keyboard shortcut.
+zoomReset-button.tooltip = Reset zoom level (%S)
+# LOCALIZATION NOTE(zoomEnlarge-button.tooltip): %S is the keyboard shortcut.
+zoomEnlarge-button.tooltip = Zoom in (%S)
+
+# LOCALIZATION NOTE (cut-button.tooltip): %S is the keyboard shortcut.
+cut-button.tooltip = Cut (%S)
+# LOCALIZATION NOTE (copy-button.tooltip): %S is the keyboard shortcut.
+copy-button.tooltip = Copy (%S)
+# LOCALIZATION NOTE (paste-button.tooltip): %S is the keyboard shortcut.
+paste-button.tooltip = Paste (%S)
+
+# Geolocation UI
+
+geolocation.allow=Allow
+geolocation.allow.accesskey=A
+geolocation.block=Block
+geolocation.block.accesskey=B
+geolocation.shareWithSite4=Allow %S to access your location?
+geolocation.shareWithFile4=Allow this local file to access your location?
+# LOCALIZATION NOTE(geolocation.shareWithSiteUnsafeDelegation2):
+# %1$S is the first party origin, %2$S is the third party origin.
+geolocation.shareWithSiteUnsafeDelegation2=Allow %1$S to give %2$S permission to access your location?
+geolocation.remember=Remember this decision
+
+# Virtual Reality Device UI
+xr.allow2=Allow
+xr.allow2.accesskey=A
+xr.block=Block
+xr.block.accesskey=B
+xr.shareWithSite4=Allow %S to access virtual reality devices? This may expose sensitive information.
+xr.shareWithFile4=Allow this local file to access virtual reality devices? This may expose sensitive information.
+xr.remember=Remember this decision
+
+# Persistent storage UI
+persistentStorage.allow=Allow
+persistentStorage.allow.accesskey=A
+persistentStorage.block.label=Block
+persistentStorage.block.accesskey=B
+persistentStorage.allowWithSite2=Allow %S to store data in persistent storage?
+
+# Web notifications UI
+# LOCALIZATION NOTE (alwaysBlock, block)
+# The two button strings will never be shown at the same time, so
+# it's okay for them to have the same access key
+webNotifications.allow2=Allow
+webNotifications.allow2.accesskey=A
+webNotifications.notNow=Not Now
+webNotifications.notNow.accesskey=N
+webNotifications.never=Never Allow
+webNotifications.never.accesskey=v
+webNotifications.alwaysBlock=Always Block
+webNotifications.alwaysBlock.accesskey=B
+webNotifications.block=Block
+webNotifications.block.accesskey=B
+webNotifications.receiveFromSite3=Allow %S to send notifications?
+
+# Phishing/Malware Notification Bar.
+# LOCALIZATION NOTE (notADeceptiveSite, notAnAttack)
+# The two button strings will never be shown at the same time, so
+# it's okay for them to have the same access key
+safebrowsing.getMeOutOfHereButton.label=Get me out of here!
+safebrowsing.getMeOutOfHereButton.accessKey=G
+safebrowsing.deceptiveSite=Deceptive Site!
+safebrowsing.notADeceptiveSiteButton.label=This isn’t a deceptive site…
+safebrowsing.notADeceptiveSiteButton.accessKey=D
+safebrowsing.reportedAttackSite=Reported Attack Site!
+safebrowsing.notAnAttackButton.label=This isn’t an attack site…
+safebrowsing.notAnAttackButton.accessKey=a
+safebrowsing.reportedUnwantedSite=Reported Unwanted Software Site!
+safebrowsing.reportedHarmfulSite=Reported Harmful Site!
+
+# LOCALIZATION NOTE (addKeywordTitleAutoFill): %S will be replaced by the page's title
+# Used as the bookmark name when saving a keyword for a search field.
+addKeywordTitleAutoFill=Search %S
+
+# troubleshootModeRestart
+# LOCALIZATION NOTE (troubleshootModeRestartPromptTitle): %S is the name of the product (e.g., Firefox)
+troubleshootModeRestartPromptTitle=Restart %S in Troubleshoot Mode?
+troubleshootModeRestartPromptMessage=Your extensions, themes, and custom settings will be temporarily disabled.
+troubleshootModeRestartButton=Restart
+
+# LOCALIZATION NOTE (browser.menu.showCharacterEncoding): Set to the string
+# "true" (spelled and capitalized exactly that way) to show the "Text
+# Encoding" menu in the main Firefox button on Windows. Any other value will
+# hide it. Regardless of the value of this setting, the "Text Encoding"
+# menu will always be accessible via the "Browser Tools" menu.
+# This is not a string to translate; it just controls whether the menu shows
+# up in the Firefox button. If users frequently use the "Text Encoding"
+# menu, set this to "true". Otherwise, you can leave it as "false".
+browser.menu.showCharacterEncoding=false
+
+# Process hang reporter
+# LOCALIZATION NOTE (processHang.selected_tab.label): %1$S is the name of the product (e.g., Firefox)
+processHang.selected_tab.label = This page is slowing down %1$S. To speed up your browser, stop this page.
+# LOCALIZATION NOTE (processHang.nonspecific_tab.label): %1$S is the name of the product (e.g., Firefox)
+processHang.nonspecific_tab.label = A web page is slowing down %1$S. To speed up your browser, stop that page.
+# LOCALIZATION NOTE (processHang.specific_tab.label): %1$S is the title of the tab.
+# %2$S is the name of the product (e.g., Firefox)
+processHang.specific_tab.label = “%1$S” is slowing down %2$S. To speed up your browser, stop that page.
+# LOCALIZATION NOTE (processHang.add-on.label2): %1$S is the name of the
+# extension. %2$S is the name of the product (e.g., Firefox)
+processHang.add-on.label2 = “%1$S” is slowing down %2$S. To speed up your browser, stop that extension.
+processHang.add-on.learn-more.text = Learn more
+processHang.button_stop2.label = Stop
+processHang.button_stop2.accessKey = S
+processHang.button_debug.label = Debug Script
+processHang.button_debug.accessKey = D
+
+# LOCALIZATION NOTE (fullscreenButton.tooltip): %S is the keyboard shortcut for full screen
+fullscreenButton.tooltip=Display the window in full screen (%S)
+
+# These are visible when opening the popup inside the bookmarks sidebar
+sidebar.moveToLeft=Move Sidebar to Left
+sidebar.moveToRight=Move Sidebar to Right
+
+# LOCALIZATION NOTE(emeNotifications.drmContentDisabled.message): NB: inserted via innerHTML, so please don't use <, > or & in this string. %S will be the 'learn more' link
+emeNotifications.drmContentDisabled.message2 = You must enable DRM to play some audio or video on this page.
+emeNotifications.drmContentDisabled.button.label = Enable DRM
+emeNotifications.drmContentDisabled.button.accesskey = E
+
+# LOCALIZATION NOTE(emeNotifications.drmContentCDMInstalling.message): NB: inserted via innerHTML, so please don't use <, > or & in this string. %S is brandShortName
+emeNotifications.drmContentCDMInstalling.message = %S is installing components needed to play the audio or video on this page. Please try again later.
+
+emeNotifications.unknownDRMSoftware = Unknown
+
+# LOCALIZATION NOTE (customizeMode.tabTitle): %S is brandShortName
+customizeMode.tabTitle = Customise %S
+
+e10s.accessibilityNotice.acceptButton.label = OK
+e10s.accessibilityNotice.acceptButton.accesskey = O
+
+# LOCALIZATION NOTE (e10s.accessibilityNotice.jawsMessage): %S is brandShortName
+e10s.accessibilityNotice.jawsMessage = Display of tab content is disabled due to incompatibility between %S and your accessibility software. Please update your screen reader or switch to Firefox Extended Support Release.
+
+# LOCALIZATION NOTE (userContextPersonal.label,
+#                    userContextWork.label,
+#                    userContextShopping.label,
+#                    userContextBanking.label,
+#                    userContextNone.label):
+# These strings specify the four predefined contexts included in support of the
+# Contextual Identity / Containers project. Each context is meant to represent
+# the context that the user is in when interacting with the site. Different
+# contexts will store cookies and other information from those sites in
+# different, isolated locations. You can enable the feature by typing
+# about:config in the URL bar and changing privacy.userContext.enabled to true.
+# Once enabled, you can open a new tab in a specific context by clicking
+# File > New Container Tab > (1 of 4 contexts). Once opened, you will see these
+# strings on the right-hand side of the URL bar.
+userContextPersonal.label = Personal
+userContextWork.label = Work
+userContextBanking.label = Banking
+userContextShopping.label = Shopping
+userContextNone.label = No Container
+
+userContextPersonal.accesskey = P
+userContextWork.accesskey = W
+userContextBanking.accesskey = B
+userContextShopping.accesskey = S
+userContextNone.accesskey = N
+
+userContext.aboutPage.label = Manage Containers
+userContext.aboutPage.accesskey = o
+
+# LOCALIZATION NOTE (sendTabsToDevice.label):
+# Semi-colon list of plural forms.
+# See: https://developer.mozilla.org/en/docs/Localization_and_Plurals
+# #1 is the number of tabs sent to the device.
+sendTabsToDevice.label = Send tab to device;Send #1 tabs to device
+sendTabsToDevice.accesskey = n
+
+decoder.noCodecs.button = Learn how
+decoder.noCodecs.accesskey = L
+decoder.noCodecsLinux.message = To play video, you may need to install the required video codecs.
+decoder.noHWAcceleration.message = To improve video quality, you may need to install Microsoft’s Media Feature Pack.
+decoder.noPulseAudio.message = To play audio, you may need to install the required PulseAudio software.
+decoder.unsupportedLibavcodec.message = libavcodec may be vulnerable or is not supported, and should be updated to play video.
+
+decoder.decodeError.message = An error occurred while decoding a media resource.
+decoder.decodeError.button = Report site issue
+decoder.decodeError.accesskey = R
+decoder.decodeWarning.message = A recoverable error occurred while decoding a media resource.
+
+# LOCALIZATION NOTE (captivePortal.infoMessage3):
+# Shown in a notification bar when we detect a captive portal is blocking network access
+# and requires the user to log in before browsing.
+captivePortal.infoMessage3 = You must log in to this network before you can access the Internet.
+# LOCALIZATION NOTE (captivePortal.showLoginPage2):
+# The label for a button shown in the info bar in all tabs except the login page tab.
+# The button shows the portal login page tab when clicked.
+captivePortal.showLoginPage2 = Open network login page
+
+# LOCALIZATION NOTE (permissions.header):
+# %S is the hostname of the site that is being displayed.
+permissions.header = Permissions for %S
+permissions.remove.tooltip = Clear this permission and ask again
+
+permissions.fullscreen.promptCanceled = Cancelled pending permission requests: permission requests should not be issued before entering DOM fullscreen.
+permissions.fullscreen.fullScreenCanceled = Exited DOM fullscreen: permission requests should not be issued while in DOM fullscreen.
+
+# LOCALIZATION NOTE (aboutDialog.architecture.*):
+# The sixtyFourBit and thirtyTwoBit strings describe the architecture of the
+# current Firefox build: 32-bit or 64-bit. These strings are used in parentheses
+# between the Firefox version and the "What's new" link in the About dialog,
+# e.g.: "48.0.2 (32-bit) <What's new>" or "51.0a1 (2016-09-05) (64-bit)".
+aboutDialog.architecture.sixtyFourBit = 64-bit
+aboutDialog.architecture.thirtyTwoBit = 32-bit
+
+midi.allow.label = Allow
+midi.allow.accesskey = A
+midi.block.label = Block
+midi.block.accesskey = B
+midi.remember=Remember this decision
+midi.shareWithFile = Allow this local file to access your MIDI devices?
+# LOCALIZATION NOTE (midi.shareWithSite): %S is the name of the site URL (https://...) requesting MIDI access
+midi.shareWithSite = Allow %S to access your MIDI devices?
+midi.shareSysexWithFile = Allow this local file to access your MIDI devices and send/receive SysEx messages?
+# LOCALIZATION NOTE (midi.shareSysexWithSite): %S is the name of the site URL (https://...) requesting MIDI access
+midi.shareSysexWithSite = Allow %S to access your MIDI devices and send/receive SysEx messages?
+
+# LOCALIZATION NOTE (panel.back):
+# This is used by screen readers to label the "back" button in various browser
+# popup panels, including the sliding subviews of the main menu.
+panel.back = Back
+
+storageAccess1.Allow.label = Allow
+storageAccess1.Allow.accesskey = A
+storageAccess1.DontAllow.label = Block
+storageAccess1.DontAllow.accesskey = B
+# LOCALIZATION NOTE (storageAccess4.message, storageAccess1.hintText):
+# %1$S is the name of the site URL (www.site1.example) trying to track the user's activity.
+# %2$S is the name of the site URL (www.site2.example) that the user is visiting.  This is the same domain name displayed in the address bar.
+storageAccess4.message = Allow %1$S to use its cookies on %2$S?
+storageAccess1.hintText = You may want to block access if it’s not clear why %1$S needs this data.
+
+
+
+# LOCALIZATION NOTE (gnomeSearchProviderSearchWeb):
+# Used for search by Gnome Shell activity screen, %S is a searched string.
+gnomeSearchProviderSearchWeb=Search the web for “%S”
diff --git a/l10n-en-GB/browser/chrome/browser/customizableui/customizableWidgets.properties b/l10n-en-GB/browser/chrome/browser/customizableui/customizableWidgets.properties
new file mode 100644
index 0000000000..fab5fb066c
--- /dev/null
+++ b/l10n-en-GB/browser/chrome/browser/customizableui/customizableWidgets.properties
@@ -0,0 +1,54 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+history-panelmenu.label = History
+# LOCALIZATION NOTE(history-panelmenu.tooltiptext2): %S is the keyboard shortcut
+history-panelmenu.tooltiptext2 = Show your history (%S)
+
+find-button.label = Find
+# LOCALIZATION NOTE(find-button.tooltiptext3): %S is the keyboard shortcut.
+find-button.tooltiptext3 = Find in this page (%S)
+
+developer-button.label = Developer
+# LOCALIZATION NOTE(developer-button.tooltiptext): %S is the keyboard shortcut
+developer-button.tooltiptext2 = Open Web developer tools (%S)
+
+sidebar-button.label = Sidebars
+sidebar-button.tooltiptext2 = Show sidebars
+
+zoom-controls.label = Zoom Controls
+zoom-controls.tooltiptext2 = Zoom controls
+
+zoom-out-button.label = Zoom out
+# LOCALIZATION NOTE(zoom-out-button.tooltiptext2): %S is the keyboard shortcut.
+zoom-out-button.tooltiptext2 = Zoom out (%S)
+
+# LOCALIZATION NOTE(zoom-reset-button.tooltiptext2): %S is the keyboard shortcut.
+zoom-reset-button.tooltiptext2 = Reset zoom level (%S)
+
+zoom-in-button.label = Zoom in
+# LOCALIZATION NOTE(zoom-in-button.tooltiptext2): %S is the keyboard shortcut.
+zoom-in-button.tooltiptext2 = Zoom in (%S)
+
+edit-controls.label = Edit Controls
+edit-controls.tooltiptext2 = Edit controls
+
+cut-button.label = Cut
+# LOCALIZATION NOTE(cut-button.tooltiptext2): %S is the keyboard shortcut.
+cut-button.tooltiptext2 = Cut (%S)
+
+copy-button.label = Copy
+# LOCALIZATION NOTE(copy-button.tooltiptext2): %S is the keyboard shortcut.
+copy-button.tooltiptext2 = Copy (%S)
+
+paste-button.label = Paste
+# LOCALIZATION NOTE(paste-button.tooltiptext2): %S is the keyboard shortcut.
+paste-button.tooltiptext2 = Paste (%S)
+
+panic-button.label = Forget
+panic-button.tooltiptext = Forget about some browsing history
+
+toolbarspring.label = Flexible Space
+toolbarseparator.label = Separator
+toolbarspacer.label = Space
diff --git a/l10n-en-GB/browser/chrome/browser/downloads/downloads.properties b/l10n-en-GB/browser/chrome/browser/downloads/downloads.properties
new file mode 100644
index 0000000000..04bdd65db8
--- /dev/null
+++ b/l10n-en-GB/browser/chrome/browser/downloads/downloads.properties
@@ -0,0 +1,82 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this file,
+# You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# LOCALIZATION NOTE (stateStarting):
+# Indicates that the download is starting.
+stateStarting=Starting…
+# LOCALIZATION NOTE (stateFailed):
+# Indicates that the download failed because of an error.
+stateFailed=Failed
+# LOCALIZATION NOTE (statePaused):
+# Indicates that the download was paused by the user.
+statePaused=Paused
+# LOCALIZATION NOTE (stateCanceled):
+# Indicates that the download was canceled by the user.
+stateCanceled=Cancelled
+# LOCALIZATION NOTE (stateCompleted):
+# Indicates that the download was completed.
+stateCompleted=Completed
+# LOCALIZATION NOTE (stateBlockedParentalControls):
+# Indicates that the download was blocked by the Parental Controls feature of
+# Windows.  "Parental Controls" should be consistently named and capitalized
+# with the display of this feature in Windows.  The following article can
+# provide a reference for the translation of "Parental Controls" in various
+# languages:
+# http://windows.microsoft.com/en-US/windows-vista/Set-up-Parental-Controls
+stateBlockedParentalControls=Blocked by Parental Controls
+# LOCALIZATION NOTE (blockedMalware, blockedPotentiallyUnwanted,
+#                    blockedUncommon2):
+# These strings are shown in the panel for some types of blocked downloads. You
+# may need to adjust "downloads.width" in "downloads.dtd" if this turns out to
+# be longer than the other existing status strings.
+blockedMalware=This file contains a virus or malware.
+blockedPotentiallyUnwanted=This file may harm your computer.
+blockedPotentiallyInsecure=File not downloaded: Potential security risk.
+blockedUncommon2=This file is not commonly downloaded.
+
+# LOCALIZATION NOTE (fileMovedOrMissing):
+# Displayed when a complete download which is not at the original folder.
+fileMovedOrMissing=File moved or missing
+
+# LOCALIZATION NOTE (fileDeleted):
+# Displayed when a downloaded file has been deleted by Firefox, e.g. by the
+# "Delete File" context menu item.
+fileDeleted=File deleted
+
+# LOCALIZATION NOTE (unblockHeaderUnblock, unblockHeaderOpen,
+#                    unblockTypeMalware, unblockTypePotentiallyUnwanted2,
+#                    unblockTypeUncommon2, unblockTip2, unblockButtonOpen,
+#                    unblockButtonUnblock, unblockButtonConfirmBlock, unblockInsecure2):
+# These strings are displayed in the dialog shown when the user asks a blocked
+# download to be unblocked.  The severity of the threat is expressed in
+# descending order by the unblockType strings, it is higher for files detected
+# as malware and lower for uncommon downloads.
+unblockHeaderUnblock=Are you sure you want to allow this download?
+unblockHeaderOpen=Are you sure you want to open this file?
+unblockTypeMalware=This file contains a virus or other malware that will harm your computer.
+unblockTypePotentiallyUnwanted2=This file is disguised as a helpful download, but it can make unexpected changes to your programs and settings.
+unblockTypeUncommon2=This file is not commonly downloaded and may not be safe to open. It may contain a virus or make unexpected changes to your programs and settings.
+unblockInsecure2=The download is offered over HTTP even though the current document was delivered over a secure HTTPS connection. If you proceed, the download may be corrupted or tampered with during the download process.
+unblockTip2=You can search for an alternate download source or try again later.
+unblockButtonOpen=Open
+unblockButtonUnblock=Allow download
+unblockButtonConfirmBlock=Remove file
+
+# LOCALIZATION NOTE (sizeWithUnits):
+# %1$S is replaced with the size number, and %2$S with the measurement unit.
+sizeWithUnits=%1$S %2$S
+sizeUnknown=Unknown size
+
+# LOCALIZATION NOTE (statusSeparator, statusSeparatorBeforeNumber):
+# These strings define templates for the separation of different elements in the
+# status line of a download item.  As a separator, by default we use the Unicode
+# character U+2014 'EM DASH' (long dash).  Examples of status lines include
+# "Canceled - 222.net", "1.1 MB - website2.com", or "Paused -  1.1 MB".  Note
+# that we use a wider space after the separator when it is followed by a number,
+# just to avoid visually confusing it with with a minus sign with some fonts.
+# If you use a different separator, this might not be necessary.  However, there
+# is usually no need to change the separator or the order of the substitutions,
+# even for right-to-left languages, unless the defaults are not suitable.
+statusSeparator=%1$S \u2014 %2$S
+statusSeparatorBeforeNumber=%1$S \u2014  %2$S
diff --git a/l10n-en-GB/browser/chrome/browser/feeds/subscribe.properties b/l10n-en-GB/browser/chrome/browser/feeds/subscribe.properties
new file mode 100644
index 0000000000..ef01723b9e
--- /dev/null
+++ b/l10n-en-GB/browser/chrome/browser/feeds/subscribe.properties
@@ -0,0 +1,10 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# LOCALIZATION NOTE (addProtocolHandlerMessage):
+# Message displayed when adding a protocol handler:
+# %1$S is the application's domain, %2$S is the type of protocol
+addProtocolHandlerMessage=Add “%1$S” as an application for %2$S links?
+addProtocolHandlerAddButton=Add application
+addProtocolHandlerAddButtonAccesskey=A
diff --git a/l10n-en-GB/browser/chrome/browser/places/bookmarkProperties.properties b/l10n-en-GB/browser/chrome/browser/places/bookmarkProperties.properties
new file mode 100644
index 0000000000..5e8212d48b
--- /dev/null
+++ b/l10n-en-GB/browser/chrome/browser/places/bookmarkProperties.properties
@@ -0,0 +1,24 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+dialogAcceptLabelAddItem=Add
+dialogAcceptLabelSaveItem=Save
+dialogAcceptLabelAddMulti=Add Bookmarks
+dialogAcceptLabelEdit=Save
+dialogTitleAddBookmark=New Bookmark
+dialogTitleAddFolder=New Folder
+dialogTitleAddMulti=New Bookmarks
+dialogTitleEdit=Properties for “%S”
+
+dialogTitleAddNewBookmark2=Add bookmark
+dialogTitleEditBookmark=Edit “%S”
+dialogTitleEditBookmark2=Edit bookmark
+dialogTitleAddBookmarksFolder=Add bookmarks folder
+dialogTitleAddBookmarkFolder=Add bookmark folder
+dialogTitleEditBookmarksFolder=Edit bookmarks folder
+dialogTitleEditBookmarkFolder=Edit bookmark folder
+
+bookmarkAllTabsDefault=[Folder Name]
+newFolderDefault=New Folder
+newBookmarkDefault=New Bookmark
diff --git a/l10n-en-GB/browser/chrome/browser/safebrowsing/safebrowsing.properties b/l10n-en-GB/browser/chrome/browser/safebrowsing/safebrowsing.properties
new file mode 100644
index 0000000000..aa72ddbffd
--- /dev/null
+++ b/l10n-en-GB/browser/chrome/browser/safebrowsing/safebrowsing.properties
@@ -0,0 +1,6 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+errorReportFalseDeceptiveTitle=This isn’t a deceptive site
+errorReportFalseDeceptiveMessage=It’s not possible to report this error at this time.
diff --git a/l10n-en-GB/browser/chrome/browser/search.properties b/l10n-en-GB/browser/chrome/browser/search.properties
new file mode 100644
index 0000000000..5222a0a21f
--- /dev/null
+++ b/l10n-en-GB/browser/chrome/browser/search.properties
@@ -0,0 +1,32 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+searchtip=Search using %S
+
+# LOCALIZATION NOTE (searchHeader): this is displayed at the top of the panel
+# showing search suggestions.
+# %S is replaced with the name of the current default search engine.
+searchHeader=%S Search
+
+# LOCALIZATION NOTE (cmd_pasteAndSearch): "Search" is a verb, this is the
+# search bar equivalent to the url bar's "Paste & Go"
+cmd_pasteAndSearch=Paste & Search
+
+cmd_clearHistory=Clear Search History
+cmd_clearHistory_accesskey=H
+
+# LOCALIZATION NOTE (searchForSomethingWith2):
+# This string is used to build the header above the list of search shortcuts,
+# for example "Search for <user-typed string> with:"
+searchForSomethingWith2=Search for %S with:
+
+# LOCALIZATION NOTE (searchWithHeader):
+# The wording of this string should be as close as possible to
+# searchForSomethingWith2. This string will be used when the user
+# has not typed anything.
+searchWithHeader=Search with:
+
+# LOCALIZATION NOTE (searchSettings):
+# This is the label for the button that opens Search preferences.
+searchSettings=Change Search Settings
diff --git a/l10n-en-GB/browser/chrome/browser/shellservice.properties b/l10n-en-GB/browser/chrome/browser/shellservice.properties
new file mode 100644
index 0000000000..111243c1fc
--- /dev/null
+++ b/l10n-en-GB/browser/chrome/browser/shellservice.properties
@@ -0,0 +1,16 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# LOCALIZATION NOTE (setDefaultBrowserTitle, setDefaultBrowserMessage, setDefaultBrowserDontAsk, setDefaultBrowserAlertConfirm.label, setDefaultBrowserAlertNotNow.label):
+# These strings are used as an alternative to the ones above, in a modal dialog.
+# %S will be replaced by brandShortName
+setDefaultBrowserTitle=Default Browser
+setDefaultBrowserMessage=%S is not currently set as your default browser. Would you like to make it your default browser?
+setDefaultBrowserDontAsk=Always perform this check when starting %S.
+setDefaultBrowserAlertConfirm.label=Use %S as my default browser
+setDefaultBrowserAlertNotNow.label=Not now
+
+desktopBackgroundLeafNameWin=Desktop Background.bmp
+DesktopBackgroundDownloading=Saving Picture…
+DesktopBackgroundSet=Set Desktop Background
diff --git a/l10n-en-GB/browser/chrome/browser/siteData.properties b/l10n-en-GB/browser/chrome/browser/siteData.properties
new file mode 100644
index 0000000000..6ede0c0df4
--- /dev/null
+++ b/l10n-en-GB/browser/chrome/browser/siteData.properties
@@ -0,0 +1,8 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+clearSiteDataPromptTitle=Clear all cookies and site data
+# LOCALIZATION NOTE (clearSiteDataPromptText): %S = brandShortName
+clearSiteDataPromptText=Selecting ‘Clear Now’ will clear all cookies and site data stored by %S. This may sign you out of web sites and remove offline web content.
+clearSiteDataNow=Clear Now
diff --git a/l10n-en-GB/browser/chrome/browser/sitePermissions.properties b/l10n-en-GB/browser/chrome/browser/sitePermissions.properties
new file mode 100644
index 0000000000..653354d866
--- /dev/null
+++ b/l10n-en-GB/browser/chrome/browser/sitePermissions.properties
@@ -0,0 +1,55 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# LOCALIZATION NOTE (state.current.allowed,
+#                    state.current.allowedForSession,
+#                    state.current.allowedTemporarily,
+#                    state.current.blockedTemporarily,
+#                    state.current.blocked,
+#                    state.current.hide):
+# This label is used to display active permission states in the site
+# identity popup (which does not have a lot of screen space).
+state.current.allowed = Allowed
+state.current.allowedForSession = Allowed for Session
+state.current.allowedTemporarily = Allowed Temporarily
+state.current.blockedTemporarily = Blocked Temporarily
+state.current.blocked = Blocked
+state.current.prompt = Always Ask
+
+# LOCALIZATION NOTE (state.multichoice.alwaysAsk,
+#                    state.multichoice.allow,
+#                    state.multichoice.allowForSession,
+#                    state.multichoice.block):
+# Used to label permission state checkboxes in the page info dialog.
+state.multichoice.alwaysAsk = Always Ask
+state.multichoice.allow = Allow
+state.multichoice.allowForSession = Allow for Session
+state.multichoice.block = Block
+
+state.multichoice.autoplayblock = Block Audio
+state.multichoice.autoplayblockall = Block Audio and Video
+state.multichoice.autoplayallow = Allow Audio and Video
+
+permission.autoplay.label = Autoplay
+permission.cookie.label = Set cookies
+permission.desktop-notification3.label = Send notifications
+permission.camera.label = Use the camera
+permission.microphone.label = Use the microphone
+permission.screen.label = Share the screen
+# LOCALIZATION NOTE (permission.speaker.label):
+# Short form for (permission to) "Choose and change audio output devices".
+permission.speaker.label = Select speakers
+permission.install.label = Install add-ons
+permission.popup.label = Open pop-up windows
+permission.geo.label = Access your location
+permission.xr.label = Access virtual reality devices
+permission.shortcuts.label = Override keyboard shortcuts
+permission.focus-tab-by-prompt.label = Switch to this tab
+permission.persistent-storage.label = Store data in persistent storage
+permission.canvas.label = Extract canvas data
+permission.midi.label = Access MIDI devices
+permission.midi-sysex.label = Access MIDI devices with SysEx support
+# LOCALIZATION NOTE (permission.open-protocol-handler.label):
+# Open as a verb. "This site may open applications".
+permission.open-protocol-handler.label = Open applications
diff --git a/l10n-en-GB/browser/chrome/browser/syncSetup.properties b/l10n-en-GB/browser/chrome/browser/syncSetup.properties
new file mode 100644
index 0000000000..b5d3ddbe7b
--- /dev/null
+++ b/l10n-en-GB/browser/chrome/browser/syncSetup.properties
@@ -0,0 +1,14 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# Several other strings are used (via Weave.Status.login), but they come from
+#  /services/sync
+
+# Firefox Accounts based setup.
+continue.label = Continue
+
+relinkVerify.title = Merge Warning
+relinkVerify.heading = Are you sure you want to sign in to Sync?
+# LOCALIZATION NOTE (relinkVerify.description): Email address of a user previously signed into sync.
+relinkVerify.description = A different user was previously signed in to Sync on this computer. Signing in will merge this browser’s bookmarks, passwords and other settings with %S
diff --git a/l10n-en-GB/browser/chrome/browser/taskbar.properties b/l10n-en-GB/browser/chrome/browser/taskbar.properties
new file mode 100644
index 0000000000..987d5ccf84
--- /dev/null
+++ b/l10n-en-GB/browser/chrome/browser/taskbar.properties
@@ -0,0 +1,12 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+taskbar.tasks.newTab.label=Open new tab
+taskbar.tasks.newTab.description=Open a new browser tab.
+taskbar.tasks.newWindow.label=Open new window
+taskbar.tasks.newWindow.description=Open a new browser window.
+taskbar.tasks.newPrivateWindow.label=New private window
+taskbar.tasks.newPrivateWindow.description=Open a new window in private browsing mode.
+taskbar.frequent.label=Frequent
+taskbar.recent.label=Recent
diff --git a/l10n-en-GB/browser/chrome/browser/uiDensity.properties b/l10n-en-GB/browser/chrome/browser/uiDensity.properties
new file mode 100644
index 0000000000..20a80ac41e
--- /dev/null
+++ b/l10n-en-GB/browser/chrome/browser/uiDensity.properties
@@ -0,0 +1,5 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+uiDensity.menuitem-touch.acceltext=Tablet Mode Enabled
diff --git a/l10n-en-GB/browser/chrome/overrides/appstrings.properties b/l10n-en-GB/browser/chrome/overrides/appstrings.properties
new file mode 100644
index 0000000000..ec6951a1fc
--- /dev/null
+++ b/l10n-en-GB/browser/chrome/overrides/appstrings.properties
@@ -0,0 +1,44 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+malformedURI2=Please check that the URL is correct and try again.
+fileNotFound=Firefox can’t find the file at %S.
+fileAccessDenied=The file at %S is not readable.
+dnsNotFound2=We can’t connect to the server at %S.
+unknownProtocolFound=Firefox doesn’t know how to open this address, because one of the following protocols (%S) isn’t associated with any program or is not allowed in this context.
+connectionFailure=Firefox can’t establish a connection to the server at %S.
+netInterrupt=The connection to %S was interrupted while the page was loading.
+netTimeout=The server at %S is taking too long to respond.
+redirectLoop=Firefox has detected that the server is redirecting the request for this address in a way that will never complete.
+## LOCALIZATION NOTE (confirmRepostPrompt): In this item, don’t translate "%S"
+confirmRepostPrompt=To display this page, %S must send information that will repeat any action (such as a search or order confirmation) that was performed earlier.
+resendButton.label=Resend
+unknownSocketType=Firefox doesn’t know how to communicate with the server.
+netReset=The connection to the server was reset while the page was loading.
+notCached=This document is no longer available.
+netOffline=Firefox is currently in offline mode and can’t browse the Web.
+isprinting=The document cannot change while Printing or in Print Preview.
+deniedPortAccess=This address uses a network port which is normally used for purposes other than Web browsing. Firefox has cancelled the request for your protection.
+proxyResolveFailure=Firefox is configured to use a proxy server that can’t be found.
+proxyConnectFailure=Firefox is configured to use a proxy server that is refusing connections.
+contentEncodingError=The page you are trying to view cannot be shown because it uses an invalid or unsupported form of compression.
+unsafeContentType=The page you are trying to view cannot be shown because it is contained in a file type that may not be safe to open. Please contact the web site owners to inform them of this problem.
+externalProtocolTitle=External Protocol Request
+externalProtocolPrompt=An external application must be launched to handle %1$S: links.\n\n\nRequested link:\n\n%2$S\n\nApplication: %3$S\n\n\nIf you were not expecting this request it may be an attempt to exploit a weakness in that other program. Cancel this request unless you are sure it is not malicious.\n
+#LOCALIZATION NOTE (externalProtocolUnknown): The following string is shown if the application name can't be determined
+externalProtocolUnknown=<Unknown>
+externalProtocolChkMsg=Remember my choice for all links of this type.
+externalProtocolLaunchBtn=Launch application
+malwareBlocked=The site at %S has been reported as an attack site and has been blocked based on your security preferences.
+harmfulBlocked=The site at %S has been reported as a potentially harmful site and has been blocked based on your security preferences.
+unwantedBlocked=The site at %S has been reported as serving unwanted software and has been blocked based on your security preferences.
+deceptiveBlocked=This web page at %S has been reported as a deceptive site and has been blocked based on your security preferences.
+cspBlocked=This page has a content security policy that prevents it from being loaded in this way.
+xfoBlocked=This page has an X-Frame-Options policy that prevents it from being loaded in this context.
+corruptedContentErrorv2=The site at %S has experienced a network protocol violation that cannot be repaired.
+## LOCALIZATION NOTE (sslv3Used) - Do not translate "%S".
+sslv3Used=Firefox cannot guarantee the safety of your data on %S because it uses SSLv3, a broken security protocol.
+inadequateSecurityError=The web site tried to negotiate an inadequate level of security.
+blockedByPolicy=Your organisation has blocked access to this page or web site.
+networkProtocolError=Firefox has experienced a network protocol violation that cannot be repaired.
diff --git a/l10n-en-GB/browser/crashreporter/crashreporter-override.ini b/l10n-en-GB/browser/crashreporter/crashreporter-override.ini
new file mode 100644
index 0000000000..4e7e286cd0
--- /dev/null
+++ b/l10n-en-GB/browser/crashreporter/crashreporter-override.ini
@@ -0,0 +1,9 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# This file is in the UTF-8 encoding
+[Strings]
+# LOCALIZATION NOTE (CrashReporterProductErrorText2): The %s is replaced with a string containing detailed information.
+CrashReporterProductErrorText2=Firefox had a problem and crashed. We’ll try to restore your tabs and windows when it restarts.\n\nUnfortunately the crash reporter is unable to submit a crash report.\n\nDetails: %s
+CrashReporterDescriptionText2=Firefox had a problem and crashed. We’ll try to restore your tabs and windows when it restarts.\n\nTo help us diagnose and fix the problem, you can send us a crash report.
diff --git a/l10n-en-GB/browser/defaultagent/defaultagent_localized.ini b/l10n-en-GB/browser/defaultagent/defaultagent_localized.ini
new file mode 100644
index 0000000000..97393abc4a
--- /dev/null
+++ b/l10n-en-GB/browser/defaultagent/defaultagent_localized.ini
@@ -0,0 +1,15 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# This file is in the UTF-8 encoding
+[Strings]
+DefaultBrowserAgentTaskDescription=The Default Browser Agent task checks when the default changes from %MOZ_APP_DISPLAYNAME% to another browser. If the change happens under suspicious circumstances, it will prompt users to change back to %MOZ_APP_DISPLAYNAME% no more than two times. This task is installed automatically by %MOZ_APP_DISPLAYNAME%, and is reinstalled when %MOZ_APP_DISPLAYNAME% updates. To disable this task, update the “default-browser-agent.enabled” preference on the about:config page or the %MOZ_APP_DISPLAYNAME% enterprise policy setting “DisableDefaultBrowserAgent”.
+
+DefaultBrowserNotificationTitle=Make %MOZ_APP_DISPLAYNAME% your default browser
+DefaultBrowserNotificationText=%MOZ_APP_DISPLAYNAME% is no longer your default browser. Make it your default?
+
+DefaultBrowserNotificationHeaderText=Keep using %MOZ_APP_DISPLAYNAME%?
+DefaultBrowserNotificationBodyText=Your default browser was recently changed. Tap to restore %MOZ_APP_DISPLAYNAME% to default.
+DefaultBrowserNotificationYesButtonText=Yes
+DefaultBrowserNotificationNoButtonText=No
diff --git a/l10n-en-GB/browser/extensions/formautofill/formautofill.properties b/l10n-en-GB/browser/extensions/formautofill/formautofill.properties
new file mode 100644
index 0000000000..338f491c59
--- /dev/null
+++ b/l10n-en-GB/browser/extensions/formautofill/formautofill.properties
@@ -0,0 +1,135 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# LOCALIZATION NOTE (autofillOptionsLink, autofillOptionsLinkOSX): These strings are used in the doorhanger for
+# updating addresses. The link leads users to Form Autofill browser preferences.
+autofillOptionsLink = Form Autofill Options
+autofillOptionsLinkOSX = Form Autofill Preferences
+# LOCALIZATION NOTE (changeAutofillOptions, changeAutofillOptionsOSX): These strings are used on the doorhanger
+# that notifies users that addresses are saved. The button leads users to Form Autofill browser preferences.
+changeAutofillOptions = Change Form Autofill Options
+changeAutofillOptionsOSX = Change Form Autofill Preferences
+changeAutofillOptionsAccessKey = C
+# LOCALIZATION NOTE (addressesSyncCheckbox): If Sync is enabled, this checkbox is displayed on the doorhanger
+# shown when saving addresses.
+addressesSyncCheckbox = Share addresses with synchronised devices
+# LOCALIZATION NOTE (creditCardsSyncCheckbox): If Sync is enabled and credit card sync is available,
+# this checkbox is displayed on the doorhanger shown when saving credit card.
+creditCardsSyncCheckbox = Share credit cards with synchronised devices
+
+# LOCALIZATION NOTE (saveAddressesMessage): %S is brandShortName. This string is used on the doorhanger to
+# notify users that addresses are saved.
+saveAddressesMessage = %S now saves addresses so you can fill out forms faster.
+saveAddressDescriptionLabel = Address to save:
+saveAddressLabel = Save Address
+saveAddressAccessKey = S
+# LOCALIZATION NOTE (updateAddressMessage, updateAddressDescriptionLabel, createAddressLabel, updateAddressLabel):
+# Used on the doorhanger when an address change is detected.
+updateAddressMessage = Would you like to update your address with this new information?
+updateAddressOldDescriptionLabel = Old Address:
+updateAddressNewDescriptionLabel = New Address:
+createAddressLabel = Create New Address
+createAddressAccessKey = C
+createAddressDescriptionLabel = Address to create:
+cancelAddressLabel = Don’t Save
+cancelAddressAccessKey = D
+updateAddressLabel = Update Address
+updateAddressAccessKey = U
+
+# LOCALIZATION NOTE (saveCreditCardMessage, saveCreditCardDescriptionLabel, saveCreditCardLabel, cancelCreditCardLabel, neverSaveCreditCardLabel):
+# Used on the doorhanger when users submit payment with credit card.
+# LOCALIZATION NOTE (saveCreditCardMessage): %S is brandShortName.
+saveCreditCardMessage = Would you like %S to save this credit card? (Security code will not be saved)
+saveCreditCardDescriptionLabel = Credit card to save:
+saveCreditCardLabel = Save Credit Card
+saveCreditCardAccessKey = S
+cancelCreditCardLabel = Don’t Save
+cancelCreditCardAccessKey = D
+neverSaveCreditCardLabel = Never Save Credit Cards
+neverSaveCreditCardAccessKey = N
+# LOCALIZATION NOTE (updateCreditCardMessage, updateCreditCardDescriptionLabel, createCreditCardLabel, updateCreditCardLabel):
+# Used on the doorhanger when an credit card change is detected.
+updateCreditCardMessage = Would you like to update your credit card with this new information?
+updateCreditCardDescriptionLabel = Credit card to update:
+createCreditCardLabel = Create New Credit Card
+createCreditCardAccessKey = C
+updateCreditCardLabel = Update Credit Card
+updateCreditCardAccessKey = U
+# LOCALIZATION NOTE (openAutofillMessagePanel): Tooltip label for Form Autofill doorhanger icon on address bar.
+openAutofillMessagePanel = Open Form Autofill message panel
+
+# LOCALIZATION NOTE (autocompleteFooterOption2):
+# Used as a label for the button, displayed at the bottom of the dropdown suggestion, to open Form Autofill browser preferences.
+autocompleteFooterOption2 = Form Autofill Options
+# LOCALIZATION NOTE (autocompleteFooterOptionOSX2):
+# Used as a label for the button, displayed at the bottom of the dropdown suggestion, to open Form Autofill browser preferences.
+autocompleteFooterOptionOSX2 = Form Autofill Preferences
+# LOCALIZATION NOTE (autocompleteFooterOptionShort2):
+# Used as a label for the button, displayed at the bottom of the dropdown suggestion, to open Form Autofill browser preferences.
+# The short version is used for inputs below a certain width (e.g. 150px).
+autocompleteFooterOptionShort2 = Autofill Options
+# LOCALIZATION NOTE (autocompleteFooterOptionOSXShort2):
+# Used as a label for the button, displayed at the bottom of the dropdown suggestion, to open Form Autofill browser preferences.
+# The short version is used for inputs below a certain width (e.g. 150px).
+autocompleteFooterOptionOSXShort2 = Autofill Preferences
+
+# LOCALIZATION NOTE (autocompleteManageCreditCards):
+# Used as a label for the button, displayed at the bottom of the dropdown suggestion, to open Form Autofill browser preferences.
+autocompleteManageCreditCards = Manage credit cards
+# LOCALIZATION NOTE (autocompleteManageAddresses):
+# Used as a label for the button, displayed at the bottom of the dropdown suggestion, to open Form Autofill browser preferences.
+autocompleteManageAddresses = Manage addresses
+# LOCALIZATION NOTE (category.address, category.name, category.organization2, category.tel, category.email):
+# Used in autofill drop down suggestion to indicate what other categories Form Autofill will attempt to fill.
+category.address = address
+category.name = name
+category.organization2 = organisation
+category.tel = phone
+category.email = email
+# LOCALIZATION NOTE (fieldNameSeparator): This is used as a separator between categories.
+fieldNameSeparator = ,\u0020
+# LOCALIZATION NOTE (phishingWarningMessage, phishingWarningMessage2): The warning
+# text that is displayed for informing users what categories are about to be filled.
+# "%S" will be replaced with a list generated from the pre-defined categories.
+# The text would be e.g. Also autofills organization, phone, email.
+phishingWarningMessage = Also autofills %S
+phishingWarningMessage2 = Autofills %S
+# LOCALIZATION NOTE (insecureFieldWarningDescription): %S is brandShortName. This string is used in drop down
+# suggestion when users try to autofill credit card on an insecure website (without https).
+insecureFieldWarningDescription = %S has detected an insecure site. Form Autofill is temporarily disabled.
+# LOCALIZATION NOTE (clearFormBtnLabel2): Label for the button in the dropdown menu that used to clear the populated
+# form.
+clearFormBtnLabel2 = Clear Autofill Form
+
+autofillHeader = Forms and Autofill
+# LOCALIZATION NOTE (autofillAddressesCheckbox): Label for the checkbox that enables autofilling addresses.
+autofillAddressesCheckbox = Autofill addresses
+# LOCALIZATION NOTE (learnMoreLabel): Label for the link that leads users to the Form Autofill SUMO page.
+learnMoreLabel = Learn more
+# LOCALIZATION NOTE (savedAddressesBtnLabel): Label for the button that opens a dialog that shows the
+# list of saved addresses.
+savedAddressesBtnLabel = Saved Addresses…
+# LOCALIZATION NOTE (autofillCreditCardsCheckbox): Label for the checkbox that enables autofilling credit cards.
+autofillCreditCardsCheckbox = Autofill credit cards
+# LOCALIZATION NOTE (savedCreditCardsBtnLabel): Label for the button that opens a dialog that shows the list
+# of saved credit cards.
+savedCreditCardsBtnLabel = Saved Credit Cards…
+
+autofillReauthCheckboxMac = Require macOS authentication to autofill, view, or edit stored credit cards.
+autofillReauthCheckboxWin = Require Windows authentication to autofill, view, or edit stored credit cards.
+autofillReauthCheckboxLin = Require Linux authentication to autofill, view, or edit stored credit cards.
+
+# LOCALIZATION NOTE (autofillReauthOSDialogMac): This string is
+# preceded by the operating system (macOS) with "Firefox is trying to ", and
+# has a period added to its end. Make sure to test in your locale.
+autofillReauthOSDialogMac = change the authentication settings
+autofillReauthOSDialogWin = To change the authentication settings, enter your Windows login credentials.
+autofillReauthOSDialogLin = To change the authentication settings, enter your Linux login credentials.
+
+useCreditCardPasswordPrompt.win = %S is trying to use stored credit card information. Confirm access to this Windows account below.
+# LOCALIZATION NOTE (useCreditCardPasswordPrompt.macos): This string is
+# preceded by the operating system (macOS) with "Firefox is trying to ", and
+# has a period added to its end. Make sure to test in your locale.
+useCreditCardPasswordPrompt.macos = use stored credit card information
+useCreditCardPasswordPrompt.linux = %S is trying to use stored credit card information.
diff --git a/l10n-en-GB/browser/extensions/report-site-issue/webcompat.properties b/l10n-en-GB/browser/extensions/report-site-issue/webcompat.properties
new file mode 100644
index 0000000000..ee8cab2cf0
--- /dev/null
+++ b/l10n-en-GB/browser/extensions/report-site-issue/webcompat.properties
@@ -0,0 +1,10 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# LOCALIZATION NOTE(wc-reporter.label2): This string will be used in the
+# Firefox page actions menu. Localized length should be considered.
+wc-reporter.label2=Report Site Issue…
+# LOCALIZATION NOTE(wc-reporter.tooltip): A site compatibility issue is
+# a website bug that exists in one browser (Firefox), but not another.
+wc-reporter.tooltip=Report a site compatibility issue
diff --git a/l10n-en-GB/browser/firefox-l10n.js b/l10n-en-GB/browser/firefox-l10n.js
new file mode 100644
index 0000000000..b410ad9aef
--- /dev/null
+++ b/l10n-en-GB/browser/firefox-l10n.js
@@ -0,0 +1,6 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#filter substitution
+
diff --git a/l10n-en-GB/browser/installer/custom.properties b/l10n-en-GB/browser/installer/custom.properties
new file mode 100644
index 0000000000..37f676ef6f
--- /dev/null
+++ b/l10n-en-GB/browser/installer/custom.properties
@@ -0,0 +1,93 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# LOCALIZATION NOTE:
+
+# This file must be saved as UTF8
+
+# Accesskeys are defined by prefixing the letter that is to be used for the
+# accesskey with an ampersand (e.g. &).
+
+# Do not replace $BrandShortName, $BrandFullName, or $BrandFullNameDA with a
+# custom string and always use the same one as used by the en-US files.
+# $BrandFullNameDA allows the string to contain an ampersand (e.g. DA stands
+# for double ampersand) and prevents the letter following the ampersand from
+# being used as an accesskey.
+
+# You can use \n to create a newline in the string but only when the string
+# from en-US contains a \n.
+
+REG_APP_DESC=$BrandShortName delivers safe, easy web browsing. A familiar user interface, enhanced security features including protection from online identity theft, and integrated search let you get the most out of the web.
+PRIVATE_BROWSING_SHORTCUT_TITLE=$BrandShortName Private Browsing
+CONTEXT_OPTIONS=$BrandShortName &Options
+CONTEXT_SAFE_MODE=$BrandShortName &Safe Mode
+OPTIONS_PAGE_TITLE=Setup Type
+OPTIONS_PAGE_SUBTITLE=Choose setup options
+SHORTCUTS_PAGE_TITLE=Set Up Shortcuts
+SHORTCUTS_PAGE_SUBTITLE=Create Program Icons
+COMPONENTS_PAGE_TITLE=Set Up Optional Components
+COMPONENTS_PAGE_SUBTITLE=Optional Recommended Components
+OPTIONAL_COMPONENTS_DESC=The Maintenance Service will allow you to update $BrandShortName silently in the background.
+MAINTENANCE_SERVICE_CHECKBOX_DESC=Install &Maintenance Service
+SUMMARY_PAGE_TITLE=Summary
+SUMMARY_PAGE_SUBTITLE=Ready to start installing $BrandShortName
+SUMMARY_INSTALLED_TO=$BrandShortName will be installed to the following location:
+SUMMARY_REBOOT_REQUIRED_INSTALL=A restart of your computer may be required to complete the installation.
+SUMMARY_REBOOT_REQUIRED_UNINSTALL=A restart of your computer may be required to complete the uninstall.
+SUMMARY_TAKE_DEFAULTS=U&se $BrandShortName as my default web browser
+SUMMARY_INSTALL_CLICK=Click Install to continue.
+SUMMARY_UPGRADE_CLICK=Click Upgrade to continue.
+SURVEY_TEXT=&Tell us what you thought of $BrandShortName
+LAUNCH_TEXT=&Launch $BrandShortName now
+CREATE_ICONS_DESC=Create icons for $BrandShortName:
+ICONS_DESKTOP=On my &desktop
+ICONS_STARTMENU=In my &Start menu Programs folder
+ICONS_TASKBAR=On my &taskbar
+WARN_MANUALLY_CLOSE_APP_INSTALL=$BrandShortName must be closed to proceed with the installation.\n\nPlease close $BrandShortName to continue.
+WARN_MANUALLY_CLOSE_APP_UNINSTALL=$BrandShortName must be closed to proceed with the uninstall.\n\nPlease close $BrandShortName to continue.
+WARN_MANUALLY_CLOSE_APP_REFRESH=$BrandShortName must be closed to proceed with the refresh.\n\nPlease close $BrandShortName to continue.
+WARN_WRITE_ACCESS=You don’t have access to write to the installation directory.\n\nClick OK to select a different directory.
+WARN_DISK_SPACE=You don’t have sufficient disk space to install to this location.\n\nClick OK to select a different location.
+WARN_MIN_SUPPORTED_OSVER_MSG=Sorry, $BrandShortName can’t be installed. This version of $BrandShortName requires ${MinSupportedVer} or newer. Please click the OK button for additional information.
+WARN_MIN_SUPPORTED_CPU_MSG=Sorry, $BrandShortName can’t be installed. This version of $BrandShortName requires a processor with ${MinSupportedCPU} support. Please click the OK button for additional information.
+WARN_MIN_SUPPORTED_OSVER_CPU_MSG=Sorry, $BrandShortName can’t be installed. This version of $BrandShortName requires ${MinSupportedVer} or newer and a processor with ${MinSupportedCPU} support. Please click the OK button for additional information.
+WARN_RESTART_REQUIRED_UNINSTALL=Your computer must be restarted to complete a previous uninstall of $BrandShortName. Do you want to reboot now?
+WARN_RESTART_REQUIRED_UPGRADE=Your computer must be restarted to complete a previous upgrade of $BrandShortName. Do you want to reboot now?
+ERROR_CREATE_DIRECTORY_PREFIX=Error creating directory:
+ERROR_CREATE_DIRECTORY_SUFFIX=Click Cancel to stop the installation or\nRetry to try again.
+
+UN_CONFIRM_PAGE_TITLE=Uninstall $BrandFullName
+UN_CONFIRM_PAGE_SUBTITLE=Remove $BrandFullName from your computer.
+UN_CONFIRM_UNINSTALLED_FROM=$BrandShortName will be uninstalled from the following location:
+UN_CONFIRM_CLICK=Click Uninstall to continue.
+
+UN_REFRESH_PAGE_TITLE=Refresh $BrandShortName Instead?
+UN_REFRESH_PAGE_EXPLANATION=If you’re having problems with $BrandShortName, a refresh can help.\n\nThis will restore the default settings and remove add-ons. Start fresh for optimal performance.
+UN_REFRESH_LEARN_MORE=&Learn more
+UN_REFRESH_BUTTON=&Refresh $BrandShortName
+
+BANNER_CHECK_EXISTING=Checking existing installation…
+
+STATUS_INSTALL_APP=Installing $BrandShortName…
+STATUS_INSTALL_LANG=Installing Language Files (${AB_CD})…
+STATUS_UNINSTALL_MAIN=Uninstalling $BrandShortName…
+STATUS_CLEANUP=A Little Housekeeping…
+
+UN_SURVEY_CHECKBOX_LABEL=Tell Mozilla why you uninstalled $BrandShortName
+
+# _DESC strings support approximately 65 characters per line.
+# One line
+OPTIONS_SUMMARY=Choose the type of setup you prefer, then click Next.
+# One line
+OPTION_STANDARD_DESC=$BrandShortName will be installed with the most common options.
+OPTION_STANDARD_RADIO=&Standard
+# Two lines
+OPTION_CUSTOM_DESC=You may choose individual options to be installed. Recommended for experienced users.
+OPTION_CUSTOM_RADIO=&Custom
+
+# LOCALIZATION NOTE:
+# The following text replaces the Install button text on the summary page.
+# Verify that the access key for InstallBtn (in override.properties) and
+# UPGRADE_BUTTON is not already used by SUMMARY_TAKE_DEFAULTS.
+UPGRADE_BUTTON=&Upgrade
diff --git a/l10n-en-GB/browser/installer/mui.properties b/l10n-en-GB/browser/installer/mui.properties
new file mode 100644
index 0000000000..bf0b378321
--- /dev/null
+++ b/l10n-en-GB/browser/installer/mui.properties
@@ -0,0 +1,61 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# To make the l10n tinderboxen see changes to this file you can change a value
+# name by adding - to the end of the name followed by chars (e.g. Branding-2).
+
+# LOCALIZATION NOTE:
+
+# This file must be saved as UTF8
+
+# Accesskeys are defined by prefixing the letter that is to be used for the
+# accesskey with an ampersand (e.g. &).
+
+# Do not replace $BrandShortName, $BrandFullName, or $BrandFullNameDA with a
+# custom string and always use the same one as used by the en-US files.
+# $BrandFullNameDA allows the string to contain an ampersand (e.g. DA stands
+# for double ampersand) and prevents the letter following the ampersand from
+# being used as an accesskey.
+
+# You can use \n to create a newline in the string but only when the string
+# from en-US contains a \n.
+
+MUI_TEXT_WELCOME_INFO_TITLE=Welcome to the $BrandFullNameDA Setup Wizard
+MUI_TEXT_WELCOME_INFO_TEXT=This wizard will guide you through the installation of $BrandFullNameDA.\n\nIt is recommended that you close all other applications before starting Setup. This will make it possible to update relevant system files without having to reboot your computer.\n\n$_CLICK
+MUI_TEXT_COMPONENTS_TITLE=Choose Components
+MUI_TEXT_COMPONENTS_SUBTITLE=Choose which features of $BrandFullNameDA you want to install.
+MUI_INNERTEXT_COMPONENTS_DESCRIPTION_TITLE=Description
+MUI_INNERTEXT_COMPONENTS_DESCRIPTION_INFO=Position your mouse over a component to see its description.
+MUI_TEXT_DIRECTORY_TITLE=Choose Install Location
+MUI_TEXT_DIRECTORY_SUBTITLE=Choose the folder in which to install $BrandFullNameDA.
+MUI_TEXT_INSTALLING_TITLE=Installing
+MUI_TEXT_INSTALLING_SUBTITLE=Please wait while $BrandFullNameDA is being installed.
+MUI_TEXT_FINISH_TITLE=Installation Complete
+MUI_TEXT_FINISH_SUBTITLE=Setup was completed successfully.
+MUI_TEXT_ABORT_TITLE=Installation Aborted
+MUI_TEXT_ABORT_SUBTITLE=Setup was not completed successfully.
+MUI_BUTTONTEXT_FINISH=&Finish
+MUI_TEXT_FINISH_INFO_TITLE=Completing the $BrandFullNameDA Setup Wizard
+MUI_TEXT_FINISH_INFO_TEXT=$BrandFullNameDA has been installed on your computer.\n\nClick Finish to close this wizard.
+MUI_TEXT_FINISH_INFO_REBOOT=Your computer must be restarted in order to complete the installation of $BrandFullNameDA. Do you want to reboot now?
+MUI_TEXT_FINISH_REBOOTNOW=Reboot now
+MUI_TEXT_FINISH_REBOOTLATER=I want to manually reboot later
+MUI_TEXT_STARTMENU_TITLE=Choose Start Menu Folder
+MUI_TEXT_STARTMENU_SUBTITLE=Choose a Start Menu folder for the $BrandFullNameDA shortcuts.
+MUI_INNERTEXT_STARTMENU_TOP=Select the Start Menu folder in which you would like to create the program’s shortcuts. You can also enter a name to create a new folder.
+MUI_TEXT_ABORTWARNING=Are you sure you want to quit $BrandFullName Setup?
+MUI_UNTEXT_WELCOME_INFO_TITLE=Welcome to the $BrandFullNameDA Uninstall Wizard
+MUI_UNTEXT_WELCOME_INFO_TEXT=This wizard will guide you through the uninstallation of $BrandFullNameDA.\n\nBefore starting the uninstallation, make sure $BrandFullNameDA is not running.\n\n$_CLICK
+MUI_UNTEXT_CONFIRM_TITLE=Uninstall $BrandFullNameDA
+MUI_UNTEXT_CONFIRM_SUBTITLE=Remove $BrandFullNameDA from your computer.
+MUI_UNTEXT_UNINSTALLING_TITLE=Uninstalling
+MUI_UNTEXT_UNINSTALLING_SUBTITLE=Please wait while $BrandFullNameDA is being uninstalled.
+MUI_UNTEXT_FINISH_TITLE=Uninstallation Complete
+MUI_UNTEXT_FINISH_SUBTITLE=Uninstall was completed successfully.
+MUI_UNTEXT_ABORT_TITLE=Uninstallation Aborted
+MUI_UNTEXT_ABORT_SUBTITLE=Uninstall was not completed successfully.
+MUI_UNTEXT_FINISH_INFO_TITLE=Completing the $BrandFullNameDA Uninstall Wizard
+MUI_UNTEXT_FINISH_INFO_TEXT=$BrandFullNameDA has been uninstalled from your computer.\n\nClick Finish to close this wizard.
+MUI_UNTEXT_FINISH_INFO_REBOOT=Your computer must be restarted in order to complete the uninstallation of $BrandFullNameDA. Do you want to reboot now?
+MUI_UNTEXT_ABORTWARNING=Are you sure you want to quit $BrandFullName Uninstall?
diff --git a/l10n-en-GB/browser/installer/nsisstrings.properties b/l10n-en-GB/browser/installer/nsisstrings.properties
new file mode 100644
index 0000000000..da0fef9b19
--- /dev/null
+++ b/l10n-en-GB/browser/installer/nsisstrings.properties
@@ -0,0 +1,46 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# LOCALIZATION NOTE:
+
+# This file must be saved as UTF8
+
+# Do not replace $BrandShortName, $BrandProductName, $BrandFullName,
+# or $BrandFullNameDA with a custom string and always use the same one as used
+# by the en-US files.
+# $BrandFullNameDA allows the string to contain an ampersand (e.g. DA stands
+# for double ampersand) and prevents the letter following the ampersand from
+# being used as an accesskey.
+
+# You can use \n to create a newline in the string but only when the string
+# from en-US contains a \n.
+
+INSTALLER_WIN_CAPTION=$BrandShortName Installer
+
+STUB_CLEANUP_PAVEOVER_HEADER2=$BrandShortName is already installed. Let’s update it.
+STUB_CLEANUP_REINSTALL_HEADER2=$BrandShortName has been installed before. Let’s get you a new copy.
+STUB_CLEANUP_PAVEOVER_BUTTON2=Update
+STUB_CLEANUP_REINSTALL_BUTTON2=Re-install
+STUB_CLEANUP_CHECKBOX_LABEL2=Restore default settings and remove old add-ons for optimal performance
+
+STUB_INSTALLING_LABEL2=Now installing…
+STUB_INSTALLING_HEADLINE2=Optimising your settings for speed, privacy, and safety.
+STUB_INSTALLING_BODY2=$BrandShortName will be ready in just a few moments.
+STUB_BLURB_FIRST1=The fastest, most responsive $BrandShortName yet
+STUB_BLURB_SECOND1=Faster page loading and tab switching
+STUB_BLURB_THIRD1=Powerful private browsing
+STUB_BLURB_FOOTER2=Built for people, not for profit
+
+WARN_MIN_SUPPORTED_OSVER_MSG=Sorry, $BrandShortName can’t be installed. This version of $BrandShortName requires ${MinSupportedVer} or newer. Please click the OK button for additional information.
+WARN_MIN_SUPPORTED_CPU_MSG=Sorry, $BrandShortName can’t be installed. This version of $BrandShortName requires a processor with ${MinSupportedCPU} support. Please click the OK button for additional information.
+WARN_MIN_SUPPORTED_OSVER_CPU_MSG=Sorry, $BrandShortName can’t be installed. This version of $BrandShortName requires ${MinSupportedVer} or newer and a processor with ${MinSupportedCPU} support. Please click the OK button for additional information.
+WARN_WRITE_ACCESS_QUIT=You don’t have access to write to the installation directory
+WARN_DISK_SPACE_QUIT=You don’t have sufficient disk space to install.
+
+ERROR_DOWNLOAD_CONT=Hmm. For some reason, we could not install $BrandShortName.\nChoose OK to start again.
+
+STUB_CANCEL_PROMPT_HEADING=Do you want to install $BrandShortName?
+STUB_CANCEL_PROMPT_MESSAGE=If you cancel, $BrandShortName will not be installed.
+STUB_CANCEL_PROMPT_BUTTON_CONTINUE=Install $BrandShortName
+STUB_CANCEL_PROMPT_BUTTON_EXIT=Cancel
diff --git a/l10n-en-GB/browser/installer/override.properties b/l10n-en-GB/browser/installer/override.properties
new file mode 100644
index 0000000000..ed8e0faa3e
--- /dev/null
+++ b/l10n-en-GB/browser/installer/override.properties
@@ -0,0 +1,86 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# LOCALIZATION NOTE:
+
+# This file must be saved as UTF8
+
+# Accesskeys are defined by prefixing the letter that is to be used for the
+# accesskey with an ampersand (e.g. &).
+
+# Do not replace $BrandShortName, $BrandFullName, or $BrandFullNameDA with a
+# custom string and always use the same one as used by the en-US files.
+# $BrandFullNameDA allows the string to contain an ampersand (e.g. DA stands
+# for double ampersand) and prevents the letter following the ampersand from
+# being used as an accesskey.
+
+# You can use \n to create a newline in the string but only when the string
+# from en-US contains a \n.
+
+# Strings that require a space at the end should be enclosed with double
+# quotes and the double quotes will be removed. To add quotes to the beginning
+# and end of a strong enclose the add and additional double quote to the
+# beginning and end of the string (e.g. ""This will include quotes"").
+
+SetupCaption=$BrandFullName Setup
+UninstallCaption=$BrandFullName Uninstall
+BackBtn=< &Back
+NextBtn=&Next >
+AcceptBtn=I &accept the terms in the Licence Agreement
+DontAcceptBtn=I &do not accept the terms in the Licence Agreement
+InstallBtn=&Install
+UninstallBtn=&Uninstall
+CancelBtn=Cancel
+CloseBtn=&Close
+BrowseBtn=B&rowse…
+ShowDetailsBtn=Show &details
+ClickNext=Click Next to continue.
+ClickInstall=Click Install to start the installation.
+ClickUninstall=Click Uninstall to start the uninstallation.
+Completed=Completed
+LicenseTextRB=Please review the licence agreement before installing $BrandFullNameDA. If you accept all terms of the agreement, select the first option below. $_CLICK
+ComponentsText=Tick the components you want to install and untick the components you don’t want to install. $_CLICK
+ComponentsSubText2_NoInstTypes=Select components to install:
+DirText=Setup will install $BrandFullNameDA in the following folder. To install in a different folder, click Browse and select another folder. $_CLICK
+DirSubText=Destination Folder
+DirBrowseText=Select the folder to install $BrandFullNameDA in:
+SpaceAvailable="Space available: "
+SpaceRequired="Space required: "
+UninstallingText=$BrandFullNameDA will be uninstalled from the following folder. $_CLICK
+UninstallingSubText=Uninstalling from:
+FileError=Error opening file for writing: \r\n\r\n$0\r\n\r\nClick Abort to stop the installation,\r\nRetry to try again, or\r\nIgnore to skip this file.
+FileError_NoIgnore=Error opening file for writing: \r\n\r\n$0\r\n\r\nClick Retry to try again, or\r\nCancel to stop the installation.
+CantWrite="Can’t write: "
+CopyFailed=Copy failed
+CopyTo="Copy to "
+Registering="Registering: "
+Unregistering="Unregistering: "
+SymbolNotFound="Could not find symbol: "
+CouldNotLoad="Could not load: "
+CreateFolder="Create folder: "
+CreateShortcut="Create shortcut: "
+CreatedUninstaller="Created uninstaller: "
+Delete="Delete file: "
+DeleteOnReboot="Delete on reboot: "
+ErrorCreatingShortcut="Error creating shortcut: "
+ErrorCreating="Error creating: "
+ErrorDecompressing=Error decompressing data! Corrupted installer?
+ErrorRegistering=Error registering DLL
+ExecShell="ExecShell: "
+Exec="Execute: "
+Extract="Extract: "
+ErrorWriting="Extract: error writing to file "
+InvalidOpcode=Installer corrupted: invalid opcode
+NoOLE="No OLE for: "
+OutputFolder="Output folder: "
+RemoveFolder="Remove folder: "
+RenameOnReboot="Rename on reboot: "
+Rename="Rename: "
+Skipped="Skipped: "
+CopyDetails=Copy Details To Clipboard
+LogInstall=Log install process
+Byte=B
+Kilo=k
+Mega=M
+Giga=G
diff --git a/l10n-en-GB/browser/langpack-metadata.ftl b/l10n-en-GB/browser/langpack-metadata.ftl
new file mode 100644
index 0000000000..c92f03cee8
--- /dev/null
+++ b/l10n-en-GB/browser/langpack-metadata.ftl
@@ -0,0 +1,13 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+## Strings used to define the metadata of langpacks published on addons.mozilla.org.
+## Only text elements and literals are supported for these strings.
+
+langpack-creator = Mark Tyndall
+
+# To credit multiple contributors, use a comma-delimited list.
+# Example: Joe Solon, Suzy Solon
+langpack-contributors = David Bartlett, Constantine Murenin, Ian Neal
diff --git a/l10n-en-GB/browser/pdfviewer/chrome.properties b/l10n-en-GB/browser/pdfviewer/chrome.properties
new file mode 100644
index 0000000000..ef0746c798
--- /dev/null
+++ b/l10n-en-GB/browser/pdfviewer/chrome.properties
@@ -0,0 +1,20 @@
+# Copyright 2012 Mozilla Foundation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Chrome notification bar messages and buttons
+unsupported_feature=This PDF document might not be displayed correctly.
+unsupported_feature_forms=This PDF document contains forms. The filling of form fields is not supported.
+unsupported_feature_signatures=This PDF document contains digital signatures. Validation of signatures is not supported.
+open_with_different_viewer=Open With Different Viewer
+open_with_different_viewer.accessKey=O
diff --git a/l10n-en-GB/browser/pdfviewer/viewer.properties b/l10n-en-GB/browser/pdfviewer/viewer.properties
new file mode 100644
index 0000000000..7eb75fb8f9
--- /dev/null
+++ b/l10n-en-GB/browser/pdfviewer/viewer.properties
@@ -0,0 +1,302 @@
+# Copyright 2012 Mozilla Foundation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Main toolbar buttons (tooltips and alt text for images)
+previous.title=Previous Page
+previous_label=Previous
+next.title=Next Page
+next_label=Next
+
+# LOCALIZATION NOTE (page.title): The tooltip for the pageNumber input.
+page.title=Page
+# LOCALIZATION NOTE (of_pages): "{{pagesCount}}" will be replaced by a number
+# representing the total number of pages in the document.
+of_pages=of {{pagesCount}}
+# LOCALIZATION NOTE (page_of_pages): "{{pageNumber}}" and "{{pagesCount}}"
+# will be replaced by a number representing the currently visible page,
+# respectively a number representing the total number of pages in the document.
+page_of_pages=({{pageNumber}} of {{pagesCount}})
+
+zoom_out.title=Zoom Out
+zoom_out_label=Zoom Out
+zoom_in.title=Zoom In
+zoom_in_label=Zoom In
+zoom.title=Zoom
+presentation_mode.title=Switch to Presentation Mode
+presentation_mode_label=Presentation Mode
+open_file.title=Open File
+open_file_label=Open
+print.title=Print
+print_label=Print
+save.title=Save
+save_label=Save
+# LOCALIZATION NOTE (download_button.title): used in Firefox for Android as a tooltip for the download button (“download” is a verb).
+download_button.title=Download
+# LOCALIZATION NOTE (download_button_label): used in Firefox for Android as a label for the download button (“download” is a verb).
+# Length of the translation matters since we are in a mobile context, with limited screen estate.
+download_button_label=Download
+bookmark1.title=Current Page (View URL from Current Page)
+bookmark1_label=Current Page
+# LOCALIZATION NOTE (open_in_app.title): This string is used in Firefox for Android.
+open_in_app.title=Open in app
+# LOCALIZATION NOTE (open_in_app_label): This string is used in Firefox for Android. Length of the translation matters since we are in a mobile context, with limited screen estate.
+open_in_app_label=Open in app
+
+# Secondary toolbar and context menu
+tools.title=Tools
+tools_label=Tools
+first_page.title=Go to First Page
+first_page_label=Go to First Page
+last_page.title=Go to Last Page
+last_page_label=Go to Last Page
+page_rotate_cw.title=Rotate Clockwise
+page_rotate_cw_label=Rotate Clockwise
+page_rotate_ccw.title=Rotate Anti-Clockwise
+page_rotate_ccw_label=Rotate Anti-Clockwise
+
+cursor_text_select_tool.title=Enable Text Selection Tool
+cursor_text_select_tool_label=Text Selection Tool
+cursor_hand_tool.title=Enable Hand Tool
+cursor_hand_tool_label=Hand Tool
+
+scroll_page.title=Use Page Scrolling
+scroll_page_label=Page Scrolling
+scroll_vertical.title=Use Vertical Scrolling
+scroll_vertical_label=Vertical Scrolling
+scroll_horizontal.title=Use Horizontal Scrolling
+scroll_horizontal_label=Horizontal Scrolling
+scroll_wrapped.title=Use Wrapped Scrolling
+scroll_wrapped_label=Wrapped Scrolling
+
+spread_none.title=Do not join page spreads
+spread_none_label=No Spreads
+spread_odd.title=Join page spreads starting with odd-numbered pages
+spread_odd_label=Odd Spreads
+spread_even.title=Join page spreads starting with even-numbered pages
+spread_even_label=Even Spreads
+
+# Document properties dialog box
+document_properties.title=Document Properties…
+document_properties_label=Document Properties…
+document_properties_file_name=File name:
+document_properties_file_size=File size:
+# LOCALIZATION NOTE (document_properties_kb): "{{size_kb}}" and "{{size_b}}"
+# will be replaced by the PDF file size in kilobytes, respectively in bytes.
+document_properties_kb={{size_kb}} kB ({{size_b}} bytes)
+# LOCALIZATION NOTE (document_properties_mb): "{{size_mb}}" and "{{size_b}}"
+# will be replaced by the PDF file size in megabytes, respectively in bytes.
+document_properties_mb={{size_mb}} MB ({{size_b}} bytes)
+document_properties_title=Title:
+document_properties_author=Author:
+document_properties_subject=Subject:
+document_properties_keywords=Keywords:
+document_properties_creation_date=Creation Date:
+document_properties_modification_date=Modification Date:
+# LOCALIZATION NOTE (document_properties_date_string): "{{date}}" and "{{time}}"
+# will be replaced by the creation/modification date, and time, of the PDF file.
+document_properties_date_string={{date}}, {{time}}
+document_properties_creator=Creator:
+document_properties_producer=PDF Producer:
+document_properties_version=PDF Version:
+document_properties_page_count=Page Count:
+document_properties_page_size=Page Size:
+document_properties_page_size_unit_inches=in
+document_properties_page_size_unit_millimeters=mm
+document_properties_page_size_orientation_portrait=portrait
+document_properties_page_size_orientation_landscape=landscape
+document_properties_page_size_name_a3=A3
+document_properties_page_size_name_a4=A4
+document_properties_page_size_name_letter=Letter
+document_properties_page_size_name_legal=Legal
+# LOCALIZATION NOTE (document_properties_page_size_dimension_string):
+# "{{width}}", "{{height}}", {{unit}}, and {{orientation}} will be replaced by
+# the size, respectively their unit of measurement and orientation, of the (current) page.
+document_properties_page_size_dimension_string={{width}} × {{height}} {{unit}} ({{orientation}})
+# LOCALIZATION NOTE (document_properties_page_size_dimension_name_string):
+# "{{width}}", "{{height}}", {{unit}}, {{name}}, and {{orientation}} will be replaced by
+# the size, respectively their unit of measurement, name, and orientation, of the (current) page.
+document_properties_page_size_dimension_name_string={{width}} × {{height}} {{unit}} ({{name}}, {{orientation}})
+# LOCALIZATION NOTE (document_properties_linearized): The linearization status of
+# the document; usually called "Fast Web View" in English locales of Adobe software.
+document_properties_linearized=Fast Web View:
+document_properties_linearized_yes=Yes
+document_properties_linearized_no=No
+document_properties_close=Close
+
+print_progress_message=Preparing document for printing…
+# LOCALIZATION NOTE (print_progress_percent): "{{progress}}" will be replaced by
+# a numerical per cent value.
+print_progress_percent={{progress}}%
+print_progress_close=Cancel
+
+# Tooltips and alt text for side panel toolbar buttons
+# (the _label strings are alt text for the buttons, the .title strings are
+# tooltips)
+toggle_sidebar.title=Toggle Sidebar
+toggle_sidebar_notification2.title=Toggle Sidebar (document contains outline/attachments/layers)
+toggle_sidebar_label=Toggle Sidebar
+document_outline.title=Show Document Outline (double-click to expand/collapse all items)
+document_outline_label=Document Outline
+attachments.title=Show Attachments
+attachments_label=Attachments
+layers.title=Show Layers (double-click to reset all layers to the default state)
+layers_label=Layers
+thumbs.title=Show Thumbnails
+thumbs_label=Thumbnails
+current_outline_item.title=Find Current Outline Item
+current_outline_item_label=Current Outline Item
+findbar.title=Find in Document
+findbar_label=Find
+
+additional_layers=Additional Layers
+# LOCALIZATION NOTE (page_landmark): "{{page}}" will be replaced by the page number.
+page_landmark=Page {{page}}
+# Thumbnails panel item (tooltip and alt text for images)
+# LOCALIZATION NOTE (thumb_page_title): "{{page}}" will be replaced by the page
+# number.
+thumb_page_title=Page {{page}}
+# LOCALIZATION NOTE (thumb_page_canvas): "{{page}}" will be replaced by the page
+# number.
+thumb_page_canvas=Thumbnail of Page {{page}}
+
+# Find panel button title and messages
+find_input.title=Find
+find_input.placeholder=Find in document…
+find_previous.title=Find the previous occurrence of the phrase
+find_previous_label=Previous
+find_next.title=Find the next occurrence of the phrase
+find_next_label=Next
+find_highlight=Highlight All
+find_match_case_label=Match Case
+find_match_diacritics_label=Match Diacritics
+find_entire_word_label=Whole Words
+find_reached_top=Reached top of document, continued from bottom
+find_reached_bottom=Reached end of document, continued from top
+# LOCALIZATION NOTE (find_match_count): The supported plural forms are
+# [one|two|few|many|other], with [other] as the default value.
+# "{{current}}" and "{{total}}" will be replaced by a number representing the
+# index of the currently active find result, respectively a number representing
+# the total number of matches in the document.
+find_match_count={[ plural(total) ]}
+find_match_count[one]={{current}} of {{total}} match
+find_match_count[two]={{current}} of {{total}} matches
+find_match_count[few]={{current}} of {{total}} matches
+find_match_count[many]={{current}} of {{total}} matches
+find_match_count[other]={{current}} of {{total}} matches
+# LOCALIZATION NOTE (find_match_count_limit): The supported plural forms are
+# [zero|one|two|few|many|other], with [other] as the default value.
+# "{{limit}}" will be replaced by a numerical value.
+find_match_count_limit={[ plural(limit) ]}
+find_match_count_limit[zero]=More than {{limit}} matches
+find_match_count_limit[one]=More than {{limit}} match
+find_match_count_limit[two]=More than {{limit}} matches
+find_match_count_limit[few]=More than {{limit}} matches
+find_match_count_limit[many]=More than {{limit}} matches
+find_match_count_limit[other]=More than {{limit}} matches
+find_not_found=Phrase not found
+
+# Predefined zoom values
+page_scale_width=Page Width
+page_scale_fit=Page Fit
+page_scale_auto=Automatic Zoom
+page_scale_actual=Actual Size
+# LOCALIZATION NOTE (page_scale_percent): "{{scale}}" will be replaced by a
+# numerical scale value.
+page_scale_percent={{scale}}%
+
+# Loading indicator messages
+loading_error=An error occurred while loading the PDF.
+invalid_file_error=Invalid or corrupted PDF file.
+missing_file_error=Missing PDF file.
+unexpected_response_error=Unexpected server response.
+rendering_error=An error occurred while rendering the page.
+
+# LOCALIZATION NOTE (annotation_date_string): "{{date}}" and "{{time}}" will be
+# replaced by the modification date, and time, of the annotation.
+annotation_date_string={{date}}, {{time}}
+
+# LOCALIZATION NOTE (text_annotation_type.alt): This is used as a tooltip.
+# "{{type}}" will be replaced with an annotation type from a list defined in
+# the PDF spec (32000-1:2008 Table 169 – Annotation types).
+# Some common types are e.g.: "Check", "Text", "Comment", "Note"
+text_annotation_type.alt=[{{type}} Annotation]
+password_label=Enter the password to open this PDF file.
+password_invalid=Invalid password. Please try again.
+password_ok=OK
+password_cancel=Cancel
+
+printing_not_supported=Warning: Printing is not fully supported by this browser.
+printing_not_ready=Warning: The PDF is not fully loaded for printing.
+web_fonts_disabled=Web fonts are disabled: unable to use embedded PDF fonts.
+
+# Editor
+editor_free_text2.title=Text
+editor_free_text2_label=Text
+editor_ink2.title=Draw
+editor_ink2_label=Draw
+
+editor_stamp1.title=Add or edit images
+editor_stamp1_label=Add or edit images
+
+free_text2_default_content=Start typing…
+
+# Editor Parameters
+editor_free_text_color=Colour
+editor_free_text_size=Size
+editor_ink_color=Colour
+editor_ink_thickness=Thickness
+editor_ink_opacity=Opacity
+
+editor_stamp_add_image_label=Add image
+editor_stamp_add_image.title=Add image
+
+# Editor aria
+editor_free_text2_aria_label=Text Editor
+editor_ink2_aria_label=Draw Editor
+editor_ink_canvas_aria_label=User-created image
+
+# Alt-text dialog
+# LOCALIZATION NOTE (editor_alt_text_button_label): Alternative text (alt text) helps
+# when people can't see the image.
+editor_alt_text_button_label=Alt text
+editor_alt_text_edit_button_label=Edit alt text
+editor_alt_text_dialog_label=Choose an option
+editor_alt_text_dialog_description=Alt text (alternative text) helps when people can’t see the image or when it doesn’t load.
+editor_alt_text_add_description_label=Add a description
+editor_alt_text_add_description_description=Aim for 1-2 sentences that describe the subject, setting, or actions.
+editor_alt_text_mark_decorative_label=Mark as decorative
+editor_alt_text_mark_decorative_description=This is used for ornamental images, like borders or watermarks.
+editor_alt_text_cancel_button=Cancel
+editor_alt_text_save_button=Save
+editor_alt_text_decorative_tooltip=Marked as decorative
+# This is a placeholder for the alt text input area
+editor_alt_text_textarea.placeholder=For example, “A young man sits down at a table to eat a meal”
+
+# Editor resizers
+# LOCALIZATION NOTE (editor_resizer_label_topLeft): This is used in an aria label to help to understand the role of the resizer.
+editor_resizer_label_topLeft=Top left corner — resize
+# LOCALIZATION NOTE (editor_resizer_label_topMiddle): This is used in an aria label to help to understand the role of the resizer.
+editor_resizer_label_topMiddle=Top middle — resize
+# LOCALIZATION NOTE (editor_resizer_label_topRight): This is used in an aria label to help to understand the role of the resizer.
+editor_resizer_label_topRight=Top right corner — resize
+# LOCALIZATION NOTE (editor_resizer_label_middleRight): This is used in an aria label to help to understand the role of the resizer.
+editor_resizer_label_middleRight=Middle right — resize
+# LOCALIZATION NOTE (editor_resizer_label_bottomRight): This is used in an aria label to help to understand the role of the resizer.
+editor_resizer_label_bottomRight=Bottom right corner — resize
+# LOCALIZATION NOTE (editor_resizer_label_bottomMiddle): This is used in an aria label to help to understand the role of the resizer.
+editor_resizer_label_bottomMiddle=Bottom middle — resize
+# LOCALIZATION NOTE (editor_resizer_label_bottomLeft): This is used in an aria label to help to understand the role of the resizer.
+editor_resizer_label_bottomLeft=Bottom left corner — resize
+# LOCALIZATION NOTE (editor_resizer_label_middleLeft): This is used in an aria label to help to understand the role of the resizer.
+editor_resizer_label_middleLeft=Middle left — resize
diff --git a/l10n-en-GB/browser/updater/updater.ini b/l10n-en-GB/browser/updater/updater.ini
new file mode 100644
index 0000000000..e680da2656
--- /dev/null
+++ b/l10n-en-GB/browser/updater/updater.ini
@@ -0,0 +1,9 @@
+; This Source Code Form is subject to the terms of the Mozilla Public
+; License, v. 2.0. If a copy of the MPL was not distributed with this
+; file, You can obtain one at http://mozilla.org/MPL/2.0/.
+; This file is in the UTF-8 encoding
+; All strings must be less than 600 chars.
+[Strings]
+TitleText=%MOZ_APP_DISPLAYNAME% Update
+InfoText=%MOZ_APP_DISPLAYNAME% is installing your updates and will start in a few moments…
+MozillaMaintenanceDescription=The Mozilla Maintenance Service ensures that you have the latest and most secure version of Mozilla Firefox on your computer. Keeping Firefox up to date is very important for your online security, and Mozilla strongly recommends that you keep this service enabled.
diff --git a/l10n-en-GB/devtools/client/aboutdebugging.ftl b/l10n-en-GB/devtools/client/aboutdebugging.ftl
new file mode 100644
index 0000000000..691c205a65
--- /dev/null
+++ b/l10n-en-GB/devtools/client/aboutdebugging.ftl
@@ -0,0 +1,400 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+### These strings are used inside the about:debugging UI.
+
+
+# Page Title strings
+
+# Page title (ie tab title) for the Setup page
+about-debugging-page-title-setup-page = Debugging - Setup
+
+# Page title (ie tab title) for the Runtime page
+# { $selectedRuntimeId } is the id of the current runtime, such as "this-firefox", "localhost:6080", ...
+about-debugging-page-title-runtime-page = Debugging - Runtime / { $selectedRuntimeId }
+
+# Sidebar strings
+
+# Display name of the runtime for the currently running instance of Firefox. Used in the
+# Sidebar and in the Setup page.
+about-debugging-this-firefox-runtime-name = This { -brand-shorter-name }
+
+# Sidebar heading for selecting the currently running instance of Firefox
+about-debugging-sidebar-this-firefox =
+    .name = { about-debugging-this-firefox-runtime-name }
+
+# Sidebar heading for connecting to some remote source
+about-debugging-sidebar-setup =
+    .name = Setup
+
+# Text displayed in the about:debugging sidebar when USB devices discovery is enabled.
+about-debugging-sidebar-usb-enabled = USB enabled
+
+# Text displayed in the about:debugging sidebar when USB devices discovery is disabled
+# (for instance because the mandatory ADB extension is not installed).
+about-debugging-sidebar-usb-disabled = USB disabled
+
+# Connection status (connected) for runtime items in the sidebar
+aboutdebugging-sidebar-runtime-connection-status-connected = Connected
+# Connection status (disconnected) for runtime items in the sidebar
+aboutdebugging-sidebar-runtime-connection-status-disconnected = Disconnected
+
+# Text displayed in the about:debugging sidebar when no device was found.
+about-debugging-sidebar-no-devices = No devices discovered
+
+# Text displayed in buttons found in sidebar items representing remote runtimes.
+# Clicking on the button will attempt to connect to the runtime.
+about-debugging-sidebar-item-connect-button = Connect
+
+# Text displayed in buttons found in sidebar items when the runtime is connecting.
+about-debugging-sidebar-item-connect-button-connecting = Connecting…
+
+# Text displayed in buttons found in sidebar items when the connection failed.
+about-debugging-sidebar-item-connect-button-connection-failed = Connection failed
+
+# Text displayed in connection warning on sidebar item of the runtime when connecting to
+# the runtime is taking too much time.
+about-debugging-sidebar-item-connect-button-connection-not-responding = Connection still pending, check for messages on the target browser
+
+# Text displayed as connection error in sidebar item when the connection has timed out.
+about-debugging-sidebar-item-connect-button-connection-timeout = Connection timed out
+
+# Text displayed in sidebar items for remote devices where a compatible browser (eg
+# Firefox) has not been detected yet. Typically, Android phones connected via USB with
+# USB debugging enabled, but where Firefox is not started.
+about-debugging-sidebar-runtime-item-waiting-for-browser = Waiting for browser…
+
+# Text displayed in sidebar items for remote devices that have been disconnected from the
+# computer.
+about-debugging-sidebar-runtime-item-unplugged = Unplugged
+
+# Title for runtime sidebar items that are related to a specific device (USB, WiFi).
+about-debugging-sidebar-runtime-item-name =
+    .title = { $displayName } ({ $deviceName })
+# Title for runtime sidebar items where we cannot get device information (network
+# locations).
+about-debugging-sidebar-runtime-item-name-no-device =
+    .title = { $displayName }
+
+# Text to show in the footer of the sidebar that links to a help page
+# (currently: https://firefox-source-docs.mozilla.org/devtools-user/about_colon_debugging/)
+about-debugging-sidebar-support = Debugging Support
+
+# Text to show as the ALT attribute of a help icon that accompanies the help about
+# debugging link in the footer of the sidebar
+about-debugging-sidebar-support-icon =
+    .alt = Help icon
+
+# Text displayed in a sidebar button to refresh the list of USB devices. Clicking on it
+# will attempt to update the list of devices displayed in the sidebar.
+about-debugging-refresh-usb-devices-button = Refresh devices
+
+# Setup Page strings
+
+# Title of the Setup page.
+about-debugging-setup-title = Setup
+
+# Introduction text in the Setup page to explain how to configure remote debugging.
+about-debugging-setup-intro = Configure the connection method you wish to remotely debug your device with.
+
+# Explanatory text in the Setup page about what the 'This Firefox' page is for
+about-debugging-setup-this-firefox2 = Use <a>{ about-debugging-this-firefox-runtime-name }</a> to debug extensions and service workers on this version of { -brand-shorter-name }.
+
+# Title of the heading Connect section of the Setup page.
+about-debugging-setup-connect-heading = Connect a Device
+
+# USB section of the Setup page
+about-debugging-setup-usb-title = USB
+
+# Explanatory text displayed in the Setup page when USB debugging is disabled
+about-debugging-setup-usb-disabled = Enabling this will download and add the required Android USB debugging components to { -brand-shorter-name }.
+
+# Text of the button displayed in the USB section of the setup page when USB debugging is disabled.
+# Clicking on it will download components needed to debug USB Devices remotely.
+about-debugging-setup-usb-enable-button = Enable USB Devices
+
+# Text of the button displayed in the USB section of the setup page when USB debugging is enabled.
+about-debugging-setup-usb-disable-button = Disable USB Devices
+
+# Text of the button displayed in the USB section of the setup page while USB debugging
+# components are downloaded and installed.
+about-debugging-setup-usb-updating-button = Updating…
+
+# USB section of the Setup page (USB status)
+about-debugging-setup-usb-status-enabled = Enabled
+about-debugging-setup-usb-status-disabled = Disabled
+about-debugging-setup-usb-status-updating = Updating…
+
+# USB section step by step guide
+about-debugging-setup-usb-step-enable-dev-menu2 = Enable Developer menu on your Android device.
+
+# USB section step by step guide
+about-debugging-setup-usb-step-enable-debug2 = Enable USB Debugging in the Android Developer Menu.
+
+# USB section step by step guide
+about-debugging-setup-usb-step-enable-debug-firefox2 = Enable USB Debugging in Firefox on the Android device.
+
+# USB section step by step guide
+about-debugging-setup-usb-step-plug-device = Connect the Android device to your computer.
+
+# Text shown in the USB section of the setup page with a link to troubleshoot connection errors.
+# The link goes to https://firefox-source-docs.mozilla.org/devtools-user/about_colon_debugging/index.html#connecting-to-a-remote-device
+about-debugging-setup-usb-troubleshoot = Problems connecting to the USB device? <a>Troubleshoot</a>
+
+# Network section of the Setup page
+about-debugging-setup-network =
+    .title = Network Location
+
+# Text shown in the Network section of the setup page with a link to troubleshoot connection errors.
+# The link goes to https://firefox-source-docs.mozilla.org/devtools-user/about_colon_debugging/index.html#connecting-over-the-network
+about-debugging-setup-network-troubleshoot = Problems connecting via network location? <a>Troubleshoot</a>
+
+# Text of a button displayed after the network locations "Host" input.
+# Clicking on it will add the new network location to the list.
+about-debugging-network-locations-add-button = Add
+
+# Text to display when there are no locations to show.
+about-debugging-network-locations-empty-text = No network locations have been added yet.
+
+# Text of the label for the text input that allows users to add new network locations in
+# the Connect page. A host is a hostname and a port separated by a colon, as suggested by
+# the input's placeholder "localhost:6080".
+about-debugging-network-locations-host-input-label = Host
+
+# Text of a button displayed next to existing network locations in the Connect page.
+# Clicking on it removes the network location from the list.
+about-debugging-network-locations-remove-button = Remove
+
+# Text used as error message if the format of the input value was invalid in the network locations form of the Setup page.
+# Variables:
+#   $host-value (string) - The input value submitted by the user in the network locations form
+about-debugging-network-location-form-invalid = Invalid host “{ $host-value }”. The expected format is “hostname:portnumber”.
+
+# Text used as error message if the input value was already registered in the network locations form of the Setup page.
+# Variables:
+#   $host-value (string) - The input value submitted by the user in the network locations form
+about-debugging-network-location-form-duplicate = The host “{ $host-value }” is already registered
+
+# Runtime Page strings
+
+# Below are the titles for the various categories of debug targets that can be found
+# on "runtime" pages of about:debugging.
+# Title of the temporary extensions category (only available for "This Firefox" runtime).
+about-debugging-runtime-temporary-extensions =
+    .name = Temporary Extensions
+# Title of the extensions category.
+about-debugging-runtime-extensions =
+    .name = Extensions
+# Title of the tabs category.
+about-debugging-runtime-tabs =
+    .name = Tabs
+# Title of the service workers category.
+about-debugging-runtime-service-workers =
+    .name = Service Workers
+# Title of the shared workers category.
+about-debugging-runtime-shared-workers =
+    .name = Shared Workers
+# Title of the other workers category.
+about-debugging-runtime-other-workers =
+    .name = Other Workers
+# Title of the processes category.
+about-debugging-runtime-processes =
+    .name = Processes
+
+# Label of the button opening the performance profiler panel in runtime pages for remote
+# runtimes.
+about-debugging-runtime-profile-button2 = Profile performance
+
+# This string is displayed in the runtime page if the current configuration of the
+# target runtime is incompatible with service workers. "Learn more" points to:
+# https://firefox-source-docs.mozilla.org/devtools-user/about_colon_debugging/index.html#service-workers-not-compatible
+about-debugging-runtime-service-workers-not-compatible = Your browser configuration is not compatible with Service Workers. <a>Learn more</a>
+
+# This string is displayed in the runtime page if the remote browser version is too old.
+# "Troubleshooting" link points to https://firefox-source-docs.mozilla.org/devtools-user/about_colon_debugging/
+# { $runtimeVersion } is the version of the remote browser (for instance "67.0a1")
+# { $minVersion } is the minimum version that is compatible with the current Firefox instance (same format)
+about-debugging-browser-version-too-old = The connected browser has an old version ({ $runtimeVersion }). The minimum supported version is ({ $minVersion }). This is an unsupported setup and may cause DevTools to fail. Please update the connected browser. <a>Troubleshooting</a>
+
+# Dedicated message for a backward compatibility issue that occurs when connecting:
+# from Fx 70+ to the old Firefox for Android (aka Fennec) which uses Fx 68.
+about-debugging-browser-version-too-old-fennec = This version of Firefox cannot debug Firefox for Android (68). We recommend installing Firefox for Android Nightly on your phone for testing. <a>More details</a>
+
+# This string is displayed in the runtime page if the remote browser version is too recent.
+# "Troubleshooting" link points to https://firefox-source-docs.mozilla.org/devtools-user/about_colon_debugging/
+# { $runtimeID } is the build ID of the remote browser (for instance "20181231", format is yyyyMMdd)
+# { $localID } is the build ID of the current Firefox instance (same format)
+# { $runtimeVersion } is the version of the remote browser (for instance "67.0a1")
+# { $localVersion } is the version of your current browser (same format)
+about-debugging-browser-version-too-recent = The connected browser is more recent ({ $runtimeVersion }, buildID { $runtimeID }) than your { -brand-shorter-name } ({ $localVersion }, buildID { $localID }). This is an unsupported setup and may cause DevTools to fail. Please update Firefox. <a>Troubleshooting</a>
+
+# Displayed for runtime info in runtime pages.
+# { $name } is brand name such as "Firefox Nightly"
+# { $version } is version such as "64.0a1"
+about-debugging-runtime-name = { $name } ({ $version })
+
+# Text of a button displayed in Runtime pages for remote runtimes.
+# Clicking on the button will close the connection to the runtime.
+about-debugging-runtime-disconnect-button = Disconnect
+
+# Text of the connection prompt button displayed in Runtime pages, when the preference
+# "devtools.debugger.prompt-connection" is false on the target runtime.
+about-debugging-connection-prompt-enable-button = Enable connection prompt
+
+# Text of the connection prompt button displayed in Runtime pages, when the preference
+# "devtools.debugger.prompt-connection" is true on the target runtime.
+about-debugging-connection-prompt-disable-button = Disable connection prompt
+
+# Title of a modal dialog displayed on remote runtime pages after clicking on the Profile Runtime button.
+about-debugging-profiler-dialog-title2 = Profiler
+
+# Clicking on the header of a debug target category will expand or collapse the debug
+# target items in the category. This text is used as ’title’ attribute of the header,
+# to describe this feature.
+about-debugging-collapse-expand-debug-targets = Collapse / expand
+
+# Debug Targets strings
+
+# Displayed in the categories of "runtime" pages that don't have any debug target to
+# show. Debug targets depend on the category (extensions, tabs, workers...).
+about-debugging-debug-target-list-empty = Nothing yet.
+
+# Text of a button displayed next to debug targets of "runtime" pages. Clicking on this
+# button will open a DevTools toolbox that will allow inspecting the target.
+# A target can be an addon, a tab, a worker...
+about-debugging-debug-target-inspect-button = Inspect
+
+# Text of a button displayed in the "This Firefox" page, in the Temporary Extension
+# section. Clicking on the button will open a file picker to load a temporary extension
+about-debugging-tmp-extension-install-button = Load Temporary Add-on…
+
+# Text displayed when trying to install a temporary extension in the "This Firefox" page.
+about-debugging-tmp-extension-install-error = There was an error during the temporary add-on installation.
+
+# Text of a button displayed for a temporary extension loaded in the "This Firefox" page.
+# Clicking on the button will reload the extension.
+about-debugging-tmp-extension-reload-button = Reload
+
+# Text of a button displayed for a temporary extension loaded in the "This Firefox" page.
+# Clicking on the button will uninstall the extension and remove it from the page.
+about-debugging-tmp-extension-remove-button = Remove
+
+# Text of a button displayed for a temporary extension loaded in the "This Firefox" page.
+# Clicking on the button will forcefully terminate the extension background script (button
+# only visible in extensions that includes a non-persistent background script, either an
+# event page or a background service worker).
+about-debugging-tmp-extension-terminate-bgscript-button = Terminate background script
+
+# Message displayed in the file picker that opens to select a temporary extension to load
+# (triggered by the button using "about-debugging-tmp-extension-install-button")
+# manifest.json .xpi and .zip should not be localized.
+# Note: this message is only displayed in Windows and Linux platforms.
+about-debugging-tmp-extension-install-message = Select manifest.json file or .xpi/.zip archive
+
+# This string is displayed as a message about the add-on having a temporaryID.
+about-debugging-tmp-extension-temporary-id = This WebExtension has a temporary ID. <a>Learn more</a>
+
+# Text displayed for extensions in "runtime" pages, before displaying a link the extension's
+# manifest URL.
+about-debugging-extension-manifest-url =
+    .label = Manifest URL
+
+# Text displayed for extensions in "runtime" pages, before displaying the extension's uuid.
+# UUIDs look like b293e463-481e-5148-a487-5aaf7a130429
+about-debugging-extension-uuid =
+    .label = Internal UUID
+
+# Text displayed for extensions (temporary extensions only) in "runtime" pages, before
+# displaying the location of the temporary extension.
+about-debugging-extension-location =
+    .label = Location
+
+# Text displayed for extensions in "runtime" pages, before displaying the extension's ID.
+# For instance "geckoprofiler@mozilla.com" or "{ed26ddcb-5611-4512-a89a-51b8db81cfb2}".
+about-debugging-extension-id =
+    .label = Extension ID
+
+# Text displayed for extensions in "runtime" pages, before displaying the status of the
+# extension background script.
+about-debugging-extension-backgroundscript =
+    .label = Background script
+
+# Displayed for extension using a non-persistent background page (either an event page or
+# background service worker) when the background script is currently running.
+about-debugging-extension-backgroundscript-status-running = Running
+
+# Displayed for extension using a non-persistent background page when is currently stopped.
+about-debugging-extension-backgroundscript-status-stopped = Stopped
+
+# This string is displayed as a label of the button that pushes a test payload
+# to a service worker.
+# Note this relates to the "Push" API, which is normally not localized so it is
+# probably better to not localize it.
+about-debugging-worker-action-push2 = Push
+    .disabledTitle = Service Worker push is currently disabled for multiprocess { -brand-shorter-name }
+
+# This string is displayed as a label of the button that starts a service worker.
+about-debugging-worker-action-start2 = Start
+    .disabledTitle = Service Worker start is currently disabled for multiprocess { -brand-shorter-name }
+
+# This string is displayed as a label of the button that unregisters a service worker.
+about-debugging-worker-action-unregister = Unregister
+
+# Displayed for service workers in runtime pages that listen to Fetch events.
+about-debugging-worker-fetch-listening =
+    .label = Fetch
+    .value = Listening for fetch events
+
+# Displayed for service workers in runtime pages that do not listen to Fetch events.
+about-debugging-worker-fetch-not-listening =
+    .label = Fetch
+    .value = Not listening for fetch events
+
+# Displayed for service workers in runtime pages that are currently running (service
+# worker instance is active).
+about-debugging-worker-status-running = Running
+
+# Displayed for service workers in runtime pages that are registered but stopped.
+about-debugging-worker-status-stopped = Stopped
+
+# Displayed for service workers in runtime pages that are registering.
+about-debugging-worker-status-registering = Registering
+
+# Displayed for service workers in runtime pages, to label the scope of a worker
+about-debugging-worker-scope =
+    .label = Scope
+
+# Displayed for service workers in runtime pages, to label the push service endpoint (url)
+# of a worker
+about-debugging-worker-push-service =
+    .label = Push Service
+
+# Displayed as title of the inspect button when service worker debugging is disabled.
+about-debugging-worker-inspect-action-disabled =
+    .title = Service Worker inspection is currently disabled for multiprocess { -brand-shorter-name }
+
+# Displayed as title of the inspect button for zombie tabs (e.g. tabs loaded via a session restore).
+about-debugging-zombie-tab-inspect-action-disabled =
+    .title = Tab is not fully loaded and cannot be inspected
+
+# Displayed instead of the Main Process debug target when the preference
+# `devtools.browsertoolbox.fission` is true.
+about-debugging-multiprocess-toolbox-name = Multiprocess Toolbox
+
+# Description for the Multiprocess Toolbox target.
+about-debugging-multiprocess-toolbox-description = Main Process and Content Processes for the target browser
+
+# Alt text used for the close icon of message component (warnings, errors and notifications).
+about-debugging-message-close-icon =
+    .alt = Close message
+
+# Label text used for the error details of message component.
+about-debugging-message-details-label-error = Error details
+
+# Label text used for the warning details of message component.
+about-debugging-message-details-label-warning = Warning details
+
+# Label text used for default state of details of message component.
+about-debugging-message-details-label = Details
diff --git a/l10n-en-GB/devtools/client/accessibility.ftl b/l10n-en-GB/devtools/client/accessibility.ftl
new file mode 100644
index 0000000000..a18d7579fb
--- /dev/null
+++ b/l10n-en-GB/devtools/client/accessibility.ftl
@@ -0,0 +1,99 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+### These strings are used inside the Accessibility panel.
+
+accessibility-learn-more = Learn more
+
+accessibility-text-label-header = Text Labels and Names
+
+accessibility-keyboard-header = Keyboard
+
+## Text entries that are used as text alternative for icons that depict accessibility isses.
+
+
+## These strings are used in the overlay displayed when running an audit in the accessibility panel
+
+accessibility-progress-initializing = Initialising…
+    .aria-valuetext = Initialising…
+
+# This string is displayed in the audit progress bar in the accessibility panel.
+# Variables:
+#   $nodeCount (Integer) - The number of nodes for which the audit was run so far.
+accessibility-progress-progressbar =
+    { $nodeCount ->
+        [one] Checking { $nodeCount } node
+       *[other] Checking { $nodeCount } nodes
+    }
+
+accessibility-progress-finishing = Finishing up…
+    .aria-valuetext = Finishing up…
+
+## Text entries that are used as text alternative for icons that depict accessibility issues.
+
+accessibility-warning =
+    .alt = Warning
+
+accessibility-fail =
+    .alt = Error
+
+accessibility-best-practices =
+    .alt = Best Practices
+
+## Text entries for a paragraph used in the accessibility panel sidebar's checks section
+## that describe that currently selected accessible object has an accessibility issue
+## with its text label or accessible name.
+
+accessibility-text-label-issue-area = Use <code>alt</code> attribute to label <div>area</div> elements that have the <span>href</span> attribute. <a>Learn more</a>
+
+accessibility-text-label-issue-dialog = Dialogues should be labelled. <a>Learn more</a>
+
+accessibility-text-label-issue-document-title = Documents must have a <code>title</code>. <a>Learn more</a>
+
+accessibility-text-label-issue-embed = Embedded content must be labelled. <a>Learn more</a>
+
+accessibility-text-label-issue-figure = Figures with optional captions should be labelled. <a>Learn more</a>
+
+accessibility-text-label-issue-fieldset = <code>fieldset</code> elements must be labelled. <a>Learn more</a>
+
+accessibility-text-label-issue-fieldset-legend2 = Use a <code>legend</code> element to label a <span>fieldset</span>. <a>Learn more</a>
+
+accessibility-text-label-issue-form = Form elements must be labelled. <a>Learn more</a>
+
+accessibility-text-label-issue-form-visible = Form elements should have a visible text label. <a>Learn more</a>
+
+accessibility-text-label-issue-frame = <code>frame</code> elements must be labelled. <a>Learn more</a>
+
+accessibility-text-label-issue-glyph = Use <code>alt</code> attribute to label <span>mglyph</span> elements. <a>Learn more</a>
+
+accessibility-text-label-issue-heading = Headings must be labelled. <a>Learn more</a>
+
+accessibility-text-label-issue-heading-content = Headings should have visible text content. <a>Learn more</a>
+
+accessibility-text-label-issue-iframe = Use <code>title</code> attribute to describe <span>iframe</span> content. <a>Learn more</a>
+
+accessibility-text-label-issue-image = Content with images must be labelled. <a>Learn more</a>
+
+accessibility-text-label-issue-interactive = Interactive elements must be labelled. <a>Learn more</a>
+
+accessibility-text-label-issue-optgroup-label2 = Use a <code>label</code> attribute to label an <span>optgroup</span>. <a>Learn more</a>
+
+accessibility-text-label-issue-toolbar = Toolbars must be labelled when there is more than one toolbar. <a>Learn more</a>
+
+## Text entries for a paragraph used in the accessibility panel sidebar's checks section
+## that describe that currently selected accessible object has a keyboard accessibility
+## issue.
+
+accessibility-keyboard-issue-semantics = Focusable elements should have interactive semantics. <a>Learn more</a>
+
+accessibility-keyboard-issue-tabindex = Avoid using <code>tabindex</code> attribute greater than zero. <a>Learn more</a>
+
+accessibility-keyboard-issue-action = Interactive elements must be able to be activated using a keyboard. <a>Learn more</a>
+
+accessibility-keyboard-issue-focusable = Interactive elements must be focusable. <a>Learn more</a>
+
+accessibility-keyboard-issue-focus-visible = Focusable element may be missing focus styling. <a>Learn more</a>
+
+accessibility-keyboard-issue-mouse-only = Clickable elements must be focusable and should have interactive semantics. <a>Learn more</a>
diff --git a/l10n-en-GB/devtools/client/accessibility.properties b/l10n-en-GB/devtools/client/accessibility.properties
new file mode 100644
index 0000000000..10a6f1a4a9
--- /dev/null
+++ b/l10n-en-GB/devtools/client/accessibility.properties
@@ -0,0 +1,314 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# LOCALIZATION NOTE These strings are used inside the Accessibility panel
+# which is available from the Web Developer sub-menu -> 'Accessibility'.
+# The correct localization of this file might be to keep it in
+# English, or another language commonly spoken among web developers.
+# You want to make that choice consistent across the developer tools.
+# A good criteria is the language in which you'd find the best
+# documentation on web development on the web.
+
+# LOCALIZATION NOTE These strings are used inside the Accessibility panel
+# which is in the Developer Tools, available in the
+# Browser Tools sub-menu -> 'Web Developer Tools'
+#
+# The correct localization of this file might be to keep it in
+# English, or another language commonly spoken among web developers.
+# You want to make that choice consistent across the developer tools.
+# A good criteria is the language in which you'd find the best
+# documentation on web development on the web.
+
+# LOCALIZATION NOTE (accessibility.role): A title text used for Accessibility
+# tree header column that represents accessible element role.
+accessibility.role=Role
+
+# LOCALIZATION NOTE (accessibility.name): A title text used for Accessibility
+# tree header column that represents accessible element name.
+accessibility.name=Name
+
+# LOCALIZATION NOTE (accessibility.logo): A title text used for Accessibility
+# logo used on the accessibility panel landing page.
+accessibility.logo=Accessibility Logo
+
+# LOCALIZATION NOTE (accessibility.properties): A title text used for header
+# for Accessibility details sidebar.
+accessibility.properties=Properties
+
+# LOCALIZATION NOTE (accessibility.treeName): A title text used for
+# Accessibility tree (that represents accessible element name) container.
+accessibility.treeName=Accessibility Tree
+
+# LOCALIZATION NOTE (accessibility.accessible.selectElement.title): A title text
+# displayed on buttons next to accessible elements in the `relations` section, allowing the
+# user to select the element in the accessibility tree.
+accessibility.accessible.selectElement.title=Click to select the node in the Accessibility Tree
+
+# LOCALIZATION NOTE (accessibility.accessible.selectNodeInInspector.title): A title text
+# displayed on buttons next to nodes in the sidebar, allowing the user to select the node
+# in the Inspector panel.
+accessibility.accessible.selectNodeInInspector.title=Click to select the node in the inspector
+
+# LOCALIZATION NOTE (accessibility.accessible.notAvailable): A title text
+# displayed when accessible sidebar panel does not have an accessible object to
+# display.
+accessibility.accessible.notAvailable=Accessible Information Unavailable
+
+# LOCALIZATION NOTE (accessibility.enable): A title text for Enable
+# accessibility button used to enable accessibility service.
+accessibility.enable=Turn On Accessibility Features
+
+# LOCALIZATION NOTE (accessibility.enabling): A title text for Enable
+# accessibility button used when accessibility service is being enabled.
+accessibility.enabling=Turning on accessibility features…
+
+# LOCALIZATION NOTE (accessibility.disable): A title text for Disable
+# accessibility button used to disable accessibility service.
+accessibility.disable=Turn Off Accessibility Features
+
+# LOCALIZATION NOTE (accessibility.disabling): A title text for Disable
+# accessibility button used when accessibility service is being
+# disabled.
+accessibility.disabling=Turning off accessibility features…
+
+# LOCALIZATION NOTE (accessibility.pick): A title text for Picker button
+# button used to pick accessible objects from the page.
+accessibility.pick=Pick accessible object from the page
+
+# LOCALIZATION NOTE (accessibility.disable.disabledTitle): A title text used for
+# a tooltip for Disable accessibility button when accessibility service can not
+# be disabled. It is the case when a user is using a 3rd party accessibility
+# tool such as screen reader.
+accessibility.disable.disabledTitle=Accessibility service can not be turned off. It is used outside Developer Tools.
+
+# LOCALIZATION NOTE (accessibility.disable.enabledTitle): A title text used for
+# a tooltip for Disable accessibility button when accessibility service can be
+# disabled.
+accessibility.disable.enabledTitle=Accessibility service will be turned off for all tabs and windows.
+
+# LOCALIZATION NOTE (accessibility.enable.disabledTitle): A title text used for
+# a tooltip for Enabled accessibility button when accessibility service can not
+# be enabled.
+accessibility.enable.disabledTitle=Accessibility service can not be turned on. It is turned off via accessibility services privacy preference.
+
+# LOCALIZATION NOTE (accessibility.enable.enabledTitle): A title text used for
+# a tooltip for Enabled accessibility button when accessibility service can be
+# enabled.
+accessibility.enable.enabledTitle=Accessibility service will be turned on for all tabs and windows.
+
+# LOCALIZATION NOTE (accessibility.learnMore): A text that is used as is or as textual
+# description in places that link to accessibility inspector documentation.
+accessibility.learnMore=Learn more
+
+# LOCALIZATION NOTE (accessibility.description.general.p1): A title text for the first
+# paragraph, used when accessibility service description is provided before accessibility
+# inspector is enabled. %S in the content will be replaced by a link at run time
+# with the accessibility.learnMore string.
+accessibility.description.general.p1=Accessibility Inspector lets you examine the current page’s accessibility tree, which is used by screen readers and other assistive technologies. %S
+
+# LOCALIZATION NOTE (accessibility.description.general.p2): A title text for the second
+# paragraph, used when accessibility service description is provided before accessibility
+# inspector is enabled.
+accessibility.description.general.p2=Accessibility features may affect the performance of other developer tools panels and should be turned off when not in use.
+
+# LOCALIZATION NOTE (accessibility.tree.menu.printToJSON): A title text used when a
+# context menu item for printing an accessible tree to JSON is rendered after triggering a
+# context menu for an accessible tree row.
+accessibility.tree.menu.printToJSON=Print to JSON
+
+# LOCALIZATION NOTE (accessibility.checks): A title text used for header for checks
+# section in Accessibility details sidebar.
+accessibility.checks=Checks
+
+# LOCALIZATION NOTE (accessibility.checks.empty2): A title text used for indicating that
+# accessibility checks for a node yielded no results and another node should be
+# selected.
+accessibility.checks.empty2=No checks for this node.
+
+# LOCALIZATION NOTE (accessibility.contrast.header): A title text used for header for
+# checks related to color and contrast.
+accessibility.contrast.header=Colour and Contrast
+
+# LOCALIZATION NOTE (accessibility.contrast.error): A title text for the color
+# contrast ratio, used when the tool is unable to calculate the contrast ratio value.
+accessibility.contrast.error=Unable to calculate
+
+# LOCALIZATION NOTE (accessibility.contrast.large.text): A title text for the color
+# contrast ratio label indicating that the color contrast criteria used is if for large
+# text. This is lower case because it's used as a label for a tree item in accessibility
+# tree.
+accessibility.contrast.large.text=large text
+
+# LOCALIZATION NOTE (accessibility.contrast.large.title): A title text for the tooltip
+# used for the large text label (see accessibility.contrast.large.text).
+accessibility.contrast.large.title=Text is 14 point and bold or larger, or 18 point or larger.
+
+# LOCALIZATION NOTE (accessibility.contrast.annotation.AA): A title text for the paragraph
+# describing that the given colour contrast satisfies AA standard from Web Content
+# Accessibility Guidelines. %S in the content will be replaced by a link at run time
+# with the accessibility.learnMore string.
+accessibility.contrast.annotation.AA=Meets WCAG AA standards for accessible text. %S
+
+# LOCALIZATION NOTE (accessibility.contrast.annotation.AAA): A title text for the
+# paragraph describing that the given colour contrast satisfies AAA standard from Web
+# Content Accessibility Guidelines. %S in the content will be replaced by a link at run
+# time with the accessibility.learnMore string.
+accessibility.contrast.annotation.AAA=Meets WCAG AAA standards for accessible text. %S
+
+# LOCALIZATION NOTE (accessibility.contrast.annotation.FAIL): A title text for the
+# paragraph describing that the given colour contrast fails to meet the minimum level from
+# Web Content Accessibility Guidelines. %S in the content will be replaced by a link at
+# run time with the accessibility.learnMore string.
+accessibility.contrast.annotation.FAIL=Does not meet WCAG standards for accessible text. %S
+
+# LOCALIZATION NOTE (accessibility.contrast.annotation.transparent.error): A title text for the
+# paragraph suggesting a fix for error in color contrast calculation for text nodes with zero alpha.
+accessibility.contrast.annotation.transparent.error=Pick a colour that is not transparent.
+
+# LOCALIZATION NOTE (accessibility.badges): A title text for the group of badges
+# that are rendered for each accessible row within the accessibility tree when
+# one or more accessibility checks fail.
+accessibility.badges=Accessibility checks
+
+# LOCALIZATION NOTE (accessibility.filter.none): A title text for the filter
+# that is rendered within the accessibility panel toolbar for a menu item that
+# resets all filtering in tree, and for the simulation menu item that resets
+# applied color matrices to the default matrix.
+accessibility.filter.none=None
+
+# LOCALIZATION NOTE (accessibility.filter.all2): A title text for the filter
+# that is rendered within the accessibility panel toolbar for a menu item that
+# filters the tree based on all accessibility failures within it.
+accessibility.filter.all2=All Issues
+
+# LOCALIZATION NOTE (accessibility.filter.contrast): A title text for the filter
+# that is rendered within the accessibility panel toolbar for a menu item that
+# filters the tree based on contrast accessibility failures within it.
+accessibility.filter.contrast=Contrast
+
+# LOCALIZATION NOTE (accessibility.filter.textLabel): A title text for the filter
+# that is rendered within the accessibility panel toolbar for a menu item that
+# filters the tree based on text label and name accessibility failures within it.
+accessibility.filter.textLabel=Text Labels
+
+# LOCALIZATION NOTE (accessibility.filter.keyboard): A title text for the filter
+# that is rendered within the accessibility panel toolbar for a menu item that
+# filters the tree based on keyboard accessibility failures within it.
+accessibility.filter.keyboard=Keyboard
+
+# LOCALIZATION NOTE (accessibility.badge.contrast): A title text for the badge
+# that is rendered within the accessible row in the accessibility tree for a
+# given accessible object that does not satisfy the WCAG guideline for colour
+# contrast.
+accessibility.badge.contrast=contrast
+
+# LOCALIZATION NOTE (accessibility.badge.contrast.warning): A label for the
+# badge and attached warning icon that is rendered within the accessible row in
+# the accessibility tree for a given accessible object that does not satisfy the
+# WCAG guideline for colour contrast.
+accessibility.badge.contrast.warning=contrast warning
+
+# LOCALIZATION NOTE (accessibility.badge.keyboard): A title text for the
+# badge that is rendered within the accessible row in the accessibility tree for
+# a given accessible object that does not satisfy the WCAG guideline for
+# keyboard accessibility.
+accessibility.badge.keyboard=keyboard
+
+# LOCALIZATION NOTE (accessibility.badge.textLabel): A title text for the
+# badge that is rendered within the accessible row in the accessibility tree for
+# a given accessible object that does not satisfy the WCAG guideline for text
+# alternative.
+accessibility.badge.textLabel=text label
+
+# LOCALIZATION NOTE (accessibility.badge.contrast.tooltip): A title text for the
+# badge tooltip that is rendered on mouse hover over the badge in the accessible
+# row in the accessibility tree for a given accessible object that does not
+# satisfy the WCAG guideline for colour contrast.
+accessibility.badge.contrast.tooltip=Does not meet WCAG standards for accessible text.
+
+# LOCALIZATION NOTE (accessibility.badge.keyboard.tooltip): A title text
+# for the badge tooltip that is rendered on mouse hover over the badge in the
+# accessible row in the accessibility tree for a given accessible object that
+# does not satisfy the WCAG guideline for keyboard accessibility.
+accessibility.badge.keyboard.tooltip=Does not meet WCAG standards for keyboard accessibility.
+
+# LOCALIZATION NOTE (accessibility.badge.textLabel.tooltip): A title text
+# for the badge tooltip that is rendered on mouse hover over the badge in the
+# accessible row in the accessibility tree for a given accessible object that
+# does not satisfy the WCAG guideline for text alternative.
+accessibility.badge.textLabel.tooltip=Does not meet WCAG standards for text alternative.
+
+# LOCALIZATION NOTE (accessibility.tree.filters): A title text for the toolbar
+# within the main accessibility panel that contains a list of filters to be for
+# accessibility audit.
+accessibility.tree.filters=Check for issues:
+
+# LOCALIZATION NOTE (accessibility.tree.filters.prefs): A title text for the
+# preferences button tooltip that contains preferences for accessibility audit.
+accessibility.tree.filters.prefs=Configure preferences
+
+# LOCALIZATION NOTE (accessibility.progress.initializing): A title text for the
+# accessibility panel overlay shown when accessibility audit is starting up.
+accessibility.progress.initializing=Initialising…
+
+# LOCALIZATION NOTE (accessibility.progress.initializing): A title text for the
+# accessibility panel overlay shown when accessibility audit is running showing
+# the number of nodes being audited. Semi-colon list of plural forms. See:
+# http://developer.mozilla.org/en/docs/Localization_and_Plurals
+accessibility.progress.progressbar=Checking #1 node;Checking #1 nodes
+
+# LOCALIZATION NOTE (accessibility.progress.finishing): A title text for the
+# accessibility panel overlay shown when accessibility audit is finishing up.
+accessibility.progress.finishing=Finishing up…
+
+# LOCALIZATION NOTE (accessibility.pref.scroll.into.view.title): A title
+# text for the tooltip for the checkbox pref in the accessibility panel that
+# sets node auto scroll.
+accessibility.pref.scroll.into.view.title=Automatically scroll selected node into view
+
+# LOCALIZATION NOTE (accessibility.pref.scroll.into.view.label): A title
+# text for the checkbox pref in the accessibility panel that sets node auto
+# scroll.
+accessibility.pref.scroll.into.view.label=Scroll into view
+
+# LOCALIZATION NOTE (accessibility.documentation.label): This is the label for
+# the Documentation menu item.
+accessibility.documentation.label=Documentation…
+
+# LOCALIZATION NOTE (accessibility.simulation): A title text for the toolbar
+# within the main accessibility panel that contains a list of simulations for
+# vision deficiencies.
+accessibility.simulation=Simulate:
+
+# LOCALIZATION NOTE (accessibility.simulation.protanopia): This label is shown
+# in the "Simulate" menu in the accessibility panel and represent the protanopia simulation option.
+accessibility.simulation.protanopia=Protanopia (no red)
+
+# LOCALIZATION NOTE (accessibility.simulation.deuteranopia): This label is shown
+# in the "Simulate" menu in the accessibility panel and represent the deuteranopia simulation option.
+accessibility.simulation.deuteranopia=Deuteranopia (no green)
+
+# LOCALIZATION NOTE (accessibility.simulation.tritanopia): This label is shown
+# in the "Simulate" menu in the accessibility panel and represent the tritanopia simulation option.
+accessibility.simulation.tritanopia=Tritanopia (no blue)
+
+# LOCALIZATION NOTE (accessibility.simulation.contrastLoss): This label is shown
+# in the "Simulate" menu in the accessibility panel and represent the contrast loss simulation option.
+# It is also shown in the simulation menu button in the accessibility panel and represent the
+# contrast loss simulation option currently selected.
+accessibility.simulation.contrastLoss=Contrast loss
+
+# LOCALIZATION NOTE (accessibility.simulation.achromatopsia): This label is shown
+# in the "Simulate" menu in the accessibility panel and represent the achromatopsia simulation option.
+accessibility.simulation.achromatopsia=Achromatopsia (no colour)
+
+# LOCALIZATION NOTE (accessibility.toolbar.displayTabbingOrder.label): A title text for a checkbox label
+# in the accessibility panel toolbar that turns on/off the overlay of focusable elements in their
+# tabbing order.
+accessibility.toolbar.displayTabbingOrder.label=Show Tabbing Order
+
+# LOCALIZATION NOTE (accessibility.toolbar.displayTabbingOrder.tooltip): A title text for a checkbox
+# tooltip in the accessibility panel toolbar that turns on/off the overlay of focusable elements in
+# their tabbing order.
+accessibility.toolbar.displayTabbingOrder.tooltip=Show tabbing order of elements and their tabbing index.
diff --git a/l10n-en-GB/devtools/client/animationinspector.properties b/l10n-en-GB/devtools/client/animationinspector.properties
new file mode 100644
index 0000000000..73ab795cf6
--- /dev/null
+++ b/l10n-en-GB/devtools/client/animationinspector.properties
@@ -0,0 +1,182 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# LOCALIZATION NOTE These strings are used inside the Animation inspector
+# which is available as a sidebar panel in the Inspector.
+# The correct localization of this file might be to keep it in
+# English, or another language commonly spoken among web developers.
+# You want to make that choice consistent across the developer tools.
+# A good criteria is the language in which you'd find the best
+# documentation on web development on the web.
+
+# LOCALIZATION NOTE (panel.noAnimation):
+# This is the label shown in the panel when there are no displayable animations.
+# (e.g. In case of user selected a non-element node or a node that is not animated).
+panel.noAnimation=No animations were found for the current element.\nPick another element from the page.
+
+# LOCALIZATION NOTE (player.animationDurationLabel):
+# This string is displayed in each animation player widget. It is the label
+# displayed before the animation duration.
+player.animationDurationLabel=Duration:
+
+# LOCALIZATION NOTE (player.infiniteDurationText):
+# This string is displayed in a tooltip on animation player widget, in case the
+# duration of the animation is infinite.
+player.infiniteDurationText=∞
+
+# LOCALIZATION NOTE (player.animationDelayLabel):
+# This string is displayed in each animation player widget. It is the label
+# displayed before the animation delay.
+player.animationDelayLabel=Delay:
+
+# LOCALIZATION NOTE (player.animationEndDelayLabel):
+# This string is displayed in each animation player widget. It is the label
+# displayed before the animation endDelay.
+player.animationEndDelayLabel=End delay:
+
+# LOCALIZATION NOTE (player.animationRateLabel):
+# This string is displayed in each animation player widget. It is the label
+# displayed before the animation playback rate.
+player.animationRateLabel=Playback rate:
+
+# LOCALIZATION NOTE (player.animationIterationCountLabel):
+# This string is displayed in each animation player widget. It is the label
+# displayed before the number of times the animation is set to repeat.
+player.animationIterationCountLabel=Repeats:
+
+# LOCALIZATION NOTE (player.infiniteIterationCount):
+# In case the animation repeats infinitely, this string is displayed next to the
+# player.animationIterationCountLabel string, instead of a number.
+player.infiniteIterationCount=&#8734;
+
+# LOCALIZATION NOTE (player.infiniteIterationCountText):
+# See player.infiniteIterationCount for a description of what this is.
+# Unlike player.infiniteIterationCount, this string isn't used in HTML, but in
+# a tooltip.
+player.infiniteIterationCountText=∞
+
+# LOCALIZATION NOTE (player.animationIterationStartLabel2):
+# This string is displayed in a tooltip that appears when hovering over
+# animations in the timeline. It is the label displayed before the animation
+# iterationStart value.
+# %1$S will be replaced by the original iteration start value
+# %2$S will be replaced by the actual time of iteration start without time unit
+# e.g.
+# If iterationStart of animation is 0.5 and duration is 1 sec, the string will be
+# "Iteration start: 0.5 (0.5s)"
+player.animationIterationStartLabel2=Iteration start: %1$S (%2$S)
+
+# LOCALIZATION NOTE (player.animationOverallEasingLabel):
+# This string is displayed in a tooltip that appears when hovering over
+# animations in the timeline. It is the label displayed before the easing
+# that applies to a whole iteration of an animation as opposed to the
+# easing that applies between animation keyframes.
+player.animationOverallEasingLabel=Overall easing:
+
+# LOCALIZATION NOTE (player.animationTimingFunctionLabel):
+# This string is displayed in a tooltip that appears when hovering over
+# animations in the timeline. It is the label displayed before the
+# animation-timing-function for CSS Animations.
+player.animationTimingFunctionLabel=Animation timing function:
+
+# LOCALIZATION NOTE (player.animationFillLabel):
+# This string is displayed in a tooltip that appears when hovering over
+# animations in the timeline. It is the label displayed before the animation
+# fill mode value.
+player.animationFillLabel=Fill:
+
+# LOCALIZATION NOTE (player.animationDirectionLabel):
+# This string is displayed in a tooltip that appears when hovering over
+# animations in the timeline. It is the label displayed before the animation
+# direction value.
+player.animationDirectionLabel=Direction:
+
+# LOCALIZATION NOTE (player.timeLabel):
+# This string is displayed in each animation player widget, to indicate either
+# how long (in seconds) the animation lasts, or what is the animation's current
+# time (in seconds too);
+player.timeLabel=%Ss
+
+# LOCALIZATION NOTE (player.infiniteDurationText):
+# This string is displayed in animation player widget, in case the duration of the
+# animation is infinite.
+player.infiniteTimeLabel=∞
+
+# LOCALIZATION NOTE (player.playbackRateLabel):
+# This string is displayed in each animation player widget, as the label of
+# drop-down list items that can be used to change the rate at which the
+# animation runs (1× being the default, 2× being twice as fast).
+player.playbackRateLabel=%S×
+
+# LOCALIZATION NOTE (player.runningOnCompositorTooltip):
+# This string is displayed as a tooltip for the icon that indicates that the
+# animation is running on the compositor thread.
+player.runningOnCompositorTooltip=This animation is running on compositor thread
+
+# LOCALIZATION NOTE (player.allPropertiesOnCompositorTooltip):
+# This string is displayed as a tooltip for the icon that indicates that
+# all of animation is running on the compositor thread.
+player.allPropertiesOnCompositorTooltip=All animation properties are optimised
+
+# LOCALIZATION NOTE (player.somePropertiesOnCompositorTooltip):
+# This string is displayed as a tooltip for the icon that indicates that
+# all of animation is not running on the compositor thread.
+player.somePropertiesOnCompositorTooltip=Some animation properties are optimised
+
+# LOCALIZATION NOTE (timeline.pausedButtonTooltip):
+# This string is displayed in the timeline toolbar, as the tooltip of the
+# pause/resume button that can be used to pause or resume the animations
+timeline.pausedButtonTooltip=Resume the animations
+
+# LOCALIZATION NOTE (timeline.resumedButtonTooltip):
+# This string is displayed in the timeline toolbar, as the tooltip of the
+# pause/resume button that can be used to pause or resume the animations
+timeline.resumedButtonTooltip=Pause the animations
+
+# LOCALIZATION NOTE (timeline.rewindButtonTooltip):
+# This string is displayed in the timeline toolbar, as the tooltip of the
+# rewind button that can be used to rewind the animations
+timeline.rewindButtonTooltip=Rewind the animations
+
+# LOCALIZATION NOTE (timeline.timeGraduationLabel):
+# This string is displayed at the top of the animation panel, next to each time
+# graduation, to indicate what duration (in milliseconds) this graduation
+# corresponds to.
+timeline.timeGraduationLabel=%Sms
+
+# LOCALIZATION NOTE (timeline.cssanimation.nameLabel):
+# This string is displayed in a tooltip of the animation panel that is shown
+# when hovering over the name of a CSS Animation in the timeline UI.
+# %S will be replaced by the name of the animation at run-time.
+timeline.cssanimation.nameLabel=%S — CSS Animation
+
+# LOCALIZATION NOTE (timeline.csstransition.nameLabel):
+# This string is displayed in a tooltip of the animation panel that is shown
+# when hovering over the name of a CSS Transition in the timeline UI.
+# %S will be replaced by the name of the transition at run-time.
+timeline.csstransition.nameLabel=%S — CSS Transition
+
+# LOCALIZATION NOTE (timeline.scriptanimation.nameLabel):
+# This string is displayed in a tooltip of the animation panel that is shown
+# when hovering over the name of a script-generated animation in the timeline UI.
+# %S will be replaced by the name of the animation at run-time.
+timeline.scriptanimation.nameLabel=%S — Script Animation
+
+# LOCALIZATION NOTE (timeline.scriptanimation.unnamedLabel):
+# This string is displayed in a tooltip of the animation panel that is shown
+# when hovering over an unnamed script-generated animation in the timeline UI.
+timeline.scriptanimation.unnamedLabel=Script Animation
+
+# LOCALIZATION NOTE (timeline.unknown.nameLabel):
+# This string is displayed in a tooltip of the animation panel that is shown
+# when hovering over the name of an unknown animation type in the timeline UI.
+# This can happen if devtools couldn't figure out the type of the animation.
+# %S will be replaced by the name of the transition at run-time.
+timeline.unknown.nameLabel=%S
+
+# LOCALIZATION NOTE (detail.propertiesHeader.percentage):
+# This string is displayed on header label in .animated-properties-header.
+# %S represents the value in percentage with two decimal points, localized.
+# there are two "%" after %S to escape and display "%"
+detail.propertiesHeader.percentage=%S%%
diff --git a/l10n-en-GB/devtools/client/application.ftl b/l10n-en-GB/devtools/client/application.ftl
new file mode 100644
index 0000000000..997f503806
--- /dev/null
+++ b/l10n-en-GB/devtools/client/application.ftl
@@ -0,0 +1,147 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+### These strings are used inside the Application panel which is available
+### by setting the preference `devtools-application-enabled` to true.
+
+
+### The correct localization of this file might be to keep it in English, or another
+### language commonly spoken among web developers. You want to make that choice consistent
+### across the developer tools. A good criteria is the language in which you'd find the
+### best documentation on web development on the web.
+
+# Header for the list of Service Workers displayed in the application panel for the current page.
+serviceworker-list-header = Service Workers
+
+# Text displayed next to the list of Service Workers to encourage users to check out
+# about:debugging to see all registered Service Workers.
+serviceworker-list-aboutdebugging = Open <a>about:debugging</a> for Service Workers from other domains
+
+# Text for the button to unregister a Service Worker. Displayed for active Service Workers.
+serviceworker-worker-unregister = Unregister
+
+# Text for the debug link displayed for an already started Service Worker. Clicking on the
+# link opens a new devtools toolbox for this service worker. The title attribute is only
+# displayed when the link is disabled.
+serviceworker-worker-debug = Debug
+    .title = Only running service workers can be debugged
+
+# Alt text for the image icon displayed inside a debug link for a service worker.
+serviceworker-worker-inspect-icon =
+    .alt = Inspect
+
+# Text for the start link displayed for a registered but not running Service Worker.
+# Clicking on the link will attempt to start the service worker.
+serviceworker-worker-start3 = Start
+
+# Text displayed for the updated time of the service worker. The <time> element will
+# display the last update time of the service worker script.
+serviceworker-worker-updated = Updated <time>{ DATETIME($date, month: "long", year: "numeric", day: "numeric", hour: "numeric", minute: "numeric", second: "numeric") }</time>
+
+## Service Worker status strings: all serviceworker-worker-status-* strings are also
+## defined in aboutdebugging.properties and should be synchronized with them.
+
+# Service Worker status. A running service worker is registered, currently executed, can
+# be debugged and stopped.
+serviceworker-worker-status-running = Running
+
+# Service Worker status. A stopped service worker is registered but not currently active.
+serviceworker-worker-status-stopped = Stopped
+
+# Text displayed when no service workers are visible for the current page.
+serviceworker-empty-intro2 = No service workers found
+
+# Link will open https://developer.mozilla.org/docs/Web/API/Service_Worker_API/Using_Service_Workers
+serviceworker-empty-intro-link = Learn more
+
+# Text displayed when there are no Service Workers to display for the current page,
+# introducing hints to debug Service Worker issues.
+# <a> and <span> are links that will open the webconsole and the debugger, respectively.
+serviceworker-empty-suggestions2 = If the current page should have a service worker, you could look for errors in the <a>Console</a> or step through your service worker registration in the <span>Debugger</span>.
+
+# Suggestion to go to about:debugging in order to see Service Workers for all domains.
+# Link will open about:debugging in a new tab.
+serviceworker-empty-suggestions-aboutdebugging2 = View service workers from other domains
+
+# Header for the Manifest page when we have an actual manifest
+manifest-view-header = App Manifest
+
+# Header for the Manifest page when there's no manifest to inspect
+manifest-empty-intro2 = No web app manifest detected
+
+# The link will open https://developer.mozilla.org/en-US/docs/Web/Manifest
+manifest-empty-intro-link = Learn how to add a manifest
+
+# Header for the Errors and Warnings section of Manifest inspection displayed in the application panel.
+manifest-item-warnings = Errors and Warnings
+
+# Header for the Identity section of Manifest inspection displayed in the application panel.
+manifest-item-identity = Identity
+
+# Header for the Presentation section of Manifest inspection displayed in the application panel.
+manifest-item-presentation = Presentation
+
+# Header for the Icon section of Manifest inspection displayed in the application panel.
+manifest-item-icons = Icons
+
+# Text displayed while we are loading the manifest file
+manifest-loading = Loading manifest…
+
+# Text displayed when the manifest has been successfully loaded
+manifest-loaded-ok = Manifest loaded.
+
+# Text displayed as a caption when there has been an error while trying to
+# load the manifest
+manifest-loaded-error = There was an error while loading the manifest:
+
+# Text displayed as an error when there has been a Firefox DevTools error while
+# trying to load the manifest
+manifest-loaded-devtools-error = Firefox DevTools error
+
+# Text displayed when the page has no manifest available
+manifest-non-existing = No manifest found to inspect.
+
+# Text displayed when the page has a manifest embedded in a Data URL and
+# thus we cannot link to it.
+manifest-json-link-data-url = The manifest is embedded in a Data URL.
+
+# Text displayed at manifest icons to label their purpose, as declared
+# in the manifest.
+manifest-icon-purpose = Purpose: <code>{ $purpose }</code>
+
+# Text displayed as the alt attribute for <img> tags showing the icons in the
+# manifest.
+manifest-icon-img =
+    .alt = Icon
+
+# Text displayed as the title attribute for <img> tags showing the icons in the
+# manifest. `$sizes` is a user-dependent string that has been parsed as a
+# space-separated list of `<width>x<height>` sizes or the keyword `any`.
+manifest-icon-img-title = Icon with sizes: { $sizes }
+
+# Text displayed as the title attribute for <img> tags showing the icons in the
+# manifest, in case there's no icon size specified by the user
+manifest-icon-img-title-no-sizes = Unspecified size icon
+
+# Sidebar navigation item for Manifest sidebar item section
+sidebar-item-manifest = Manifest
+    .alt = Manifest Icon
+    .title = Manifest
+
+# Sidebar navigation item for Service Workers sidebar item section
+sidebar-item-service-workers = Service Workers
+    .alt = Service Workers Icon
+    .title = Service Workers
+
+# Text for the ALT and TITLE attributes of the warning icon
+icon-warning =
+    .alt = Warning icon
+    .title = Warning
+
+# Text for the ALT and TITLE attributes of the error icon
+icon-error =
+    .alt = Error icon
+    .title = Error
+
diff --git a/l10n-en-GB/devtools/client/boxmodel.properties b/l10n-en-GB/devtools/client/boxmodel.properties
new file mode 100644
index 0000000000..e932d8f0c5
--- /dev/null
+++ b/l10n-en-GB/devtools/client/boxmodel.properties
@@ -0,0 +1,48 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# LOCALIZATION NOTE : FILE This file contains the Layout View strings.
+# The Layout View is a panel displayed in the computed view tab of the Inspector sidebar.
+
+# LOCALIZATION NOTE : FILE The correct localization of this file might be to
+# keep it in English, or another language commonly spoken among web developers.
+# You want to make that choice consistent across the developer tools.
+# A good criteria is the language in which you'd find the best
+# documentation on web development on the web.
+
+# LOCALIZATION NOTE (boxmodel.title) This is the title of the box model panel and is
+# displayed as a label.
+boxmodel.title=Box Model
+
+# LOCALIZATION NOTE: (boxmodel.geometryButton.tooltip) This label is displayed as a
+# tooltip that appears when hovering over the button that allows users to edit the
+# position of an element in the page.
+boxmodel.geometryButton.tooltip=Edit position
+
+# LOCALIZATION NOTE: (boxmodel.propertiesLabel) This label is displayed as the header
+# for showing and collapsing the properties underneath the box model in the layout view
+boxmodel.propertiesLabel=Box Model Properties
+
+# LOCALIZATION NOTE (boxmodel.propertiesHideLabel):
+# This is the spoken label for the twisty.
+# If the properties are currently showing, it will say "Hide".
+boxmodel.propertiesHideLabel=Hide
+
+# LOCALIZATION NOTE (boxmodel.propertiesShowLabel):
+# This is the spoken label for the twisty.
+# If the properties are currently hidden, it will say "Show".
+boxmodel.propertiesShowLabel=Show
+
+# LOCALIZATION NOTE: (boxmodel.offsetParent) This label is displayed inside the list of
+# properties, below the box model, in the layout view. It is displayed next to the
+# position property, when position is absolute, relative, sticky. This label tells users
+# what the DOM node previewed next to it is: an offset parent for the position element.
+boxmodel.offsetParent=offset
+
+# LOCALIZATION NOTE: (boxmodel.offsetParent.title) This label is displayed as a
+# tooltip that appears when hovering over the offset label, inside the list of properties,
+# below the box model, in the layout view. This label tells users
+# what the DOM node previewed next to it is: an offset parent for the position element.
+boxmodel.offsetParent.title=Offset parent of the selected element
+
diff --git a/l10n-en-GB/devtools/client/changes.properties b/l10n-en-GB/devtools/client/changes.properties
new file mode 100644
index 0000000000..dc75955b37
--- /dev/null
+++ b/l10n-en-GB/devtools/client/changes.properties
@@ -0,0 +1,64 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# LOCALIZATION NOTE This file contains the strings for the Changes panel accessible from
+# the Inspector sidebar.
+
+# LOCALIZATION NOTE (changes.noChanges): This text is shown when no changes are available.
+changes.noChanges=No changes found.
+
+# LOCALIZATION NOTE (changes.noChangesDescription): This text is shown when no changes are
+# available and provides additional context for the purpose of the Changes panel.
+changes.noChangesDescription=Changes to CSS in Inspector will appear here.
+
+# LOCALIZATION NOTE (changes.inlineStyleSheetLabel): This label appears in the Changes
+# panel above changes done to inline stylesheets. The variable will be replaced with the
+# index of the stylesheet within its document like so: Inline #1
+changes.inlineStyleSheetLabel=Inline %S
+
+# LOCALIZATION NOTE (changes.elementStyleLabel): This label appears in the Changes
+# panel above changes done to element styles.
+changes.elementStyleLabel=Element
+
+# LOCALIZATION NOTE (changes.iframeLabel): This label appears next to URLs of stylesheets
+# and element inline styles hosted by iframes. Lowercase intentional.
+changes.iframeLabel=iframe
+
+# LOCALIZATION NOTE (changes.contextmenu.copy): Label for "Copy" option in Changes panel
+# context menu
+changes.contextmenu.copy=Copy
+
+# LOCALIZATION NOTE (changes.contextmenu.copy.accessKey): Access key for "Copy"
+# option in the Changes panel.
+changes.contextmenu.copy.accessKey=C
+
+# LOCALIZATION NOTE (changes.contextmenu.copyAllChanges): Label for "Copy All Changes"
+# option in Changes panel context menu which copies all changed CSS declarations from a
+# stylesheet
+changes.contextmenu.copyAllChanges=Copy All Changes
+
+# LOCALIZATION NOTE (changes.contextmenu.copyAllChangesDescription): Detailed explanation
+# for "Copy All Changes" option in Changes panel. Used as title attribute on "Copy All
+# Changes" button
+changes.contextmenu.copyAllChangesDescription=Copy a list of all CSS changes to clipboard.
+
+# LOCALIZATION NOTE (changes.contextmenu.copyDeclaration): Label for "Copy Declaration"
+# option in Changes panel context menu which copies the target CSS declaration.
+changes.contextmenu.copyDeclaration=Copy Declaration
+
+# LOCALIZATION NOTE (changes.contextmenu.copyRule): Label for "Copy Rule" option in
+# Changes panel context menu which copies the complete contents of a CSS rule.
+changes.contextmenu.copyRule=Copy Rule
+
+# LOCALIZATION NOTE (changes.contextmenu.copyRuleDescription): Detailed explanation for
+# "Copy Rule" option in Changes panel. Used as title attribute on "Copy Rule" button.
+changes.contextmenu.copyRuleDescription=Copy contents of this CSS rule to clipboard.
+
+# LOCALIZATION NOTE (changes.contextmenu.selectAll): Label for "Select All" option in the
+# Changes panel context menu to select all text content.
+changes.contextmenu.selectAll=Select All
+
+# LOCALIZATION NOTE (changes.contextmenu.selectAll.accessKey): Access key for "Select All"
+# option in the Changes panel.
+changes.contextmenu.selectAll.accessKey=A
diff --git a/l10n-en-GB/devtools/client/compatibility.ftl b/l10n-en-GB/devtools/client/compatibility.ftl
new file mode 100644
index 0000000000..05210e7f1a
--- /dev/null
+++ b/l10n-en-GB/devtools/client/compatibility.ftl
@@ -0,0 +1,54 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+## Messages used as headers in the main pane
+
+compatibility-selected-element-header = Selected Element
+compatibility-all-elements-header = All Issues
+
+## Message used as labels for the type of issue
+
+compatibility-issue-deprecated = (deprecated)
+compatibility-issue-experimental = (experimental)
+compatibility-issue-prefixneeded = (prefix needed)
+compatibility-issue-deprecated-experimental = (deprecated, experimental)
+compatibility-issue-deprecated-prefixneeded = (deprecated, prefix needed)
+compatibility-issue-experimental-prefixneeded = (experimental, prefix needed)
+compatibility-issue-deprecated-experimental-prefixneeded = (deprecated, experimental, prefix needed)
+
+## Messages used as labels and titles for buttons in the footer
+
+compatibility-settings-button-label = Settings
+compatibility-settings-button-title =
+    .title = Settings
+
+## Messages used as headers in settings pane
+
+compatibility-settings-header = Settings
+compatibility-target-browsers-header = Target Browsers
+
+##
+
+# Text used as the label for the number of nodes where the issue occurred
+# Variables:
+#   $number (Number) - The number of nodes where the issue occurred
+compatibility-issue-occurrences =
+    { $number ->
+        [one] { $number } occurrence
+       *[other] { $number } occurrences
+    }
+
+compatibility-no-issues-found = No compatibility issues found.
+compatibility-close-settings-button =
+    .title = Close settings
+
+# Text used in the element containing the browser icons for a given compatibility issue.
+# Line breaks are significant.
+# Variables:
+#   $browsers (String) - A line-separated list of browser information (e.g. Firefox 98\nChrome 99).
+compatibility-issue-browsers-list =
+    .title =
+        Compatibility issues in:
+        { $browsers }
diff --git a/l10n-en-GB/devtools/client/components.properties b/l10n-en-GB/devtools/client/components.properties
new file mode 100644
index 0000000000..885b6aeb86
--- /dev/null
+++ b/l10n-en-GB/devtools/client/components.properties
@@ -0,0 +1,61 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# LOCALIZATION NOTE These strings are used in the shared React components,
+# so files in `devtools/client/shared/components/*`.
+
+# LOCALIZATION NOTE (frame.unknownSource): When we do not know the source filename of
+# a frame, we use this string instead.
+frame.unknownSource=(unknown)
+
+# LOCALIZATION NOTE (frame.viewsourceindebugger): The label for the tooltip when hovering over
+# a source link that links to the debugger.
+# %S represents the URL to match in the debugger.
+frame.viewsourceindebugger=View source in Debugger → %S
+
+# LOCALIZATION NOTE (frame.viewsourceinstyleeditor): The label for the tooltip when hovering over
+# a source link that links to the Style Editor.
+# %S represents the URL to match in the style editor.
+frame.viewsourceinstyleeditor=View source in Style Editor → %S
+
+# LOCALIZATION NOTE (notificationBox.closeTooltip): The content of a tooltip that
+# appears when hovering over the close button in a notification box.
+notificationBox.closeTooltip=Close this message
+
+# LOCALIZATION NOTE (appErrorBoundary.description): This is the information displayed
+# once the panel errors.
+# %S represents the name of panel which has the crash.
+appErrorBoundary.description=The %S panel has crashed.
+
+# LOCALIZATION NOTE (appErrorBoundary.fileBugButton): This is the text that appears in
+# the button to visit the bug filing link.
+appErrorBoundary.fileBugButton=File Bug Report
+
+# LOCALIZATION NOTE (appErrorBoundary.reloadPanelInfo): This is the text that appears
+# after the panel errors to instruct the user to reload the panel.
+appErrorBoundary.reloadPanelInfo=Close and reopen the toolbox to clear this error.
+
+# LOCALIZATION NOTE(searchModifier.regExpModifier): A search option
+# when searching text in a file
+searchModifier.regExpModifier=Use Regular Expression
+
+# LOCALIZATION NOTE(searchModifier.caseSensitiveModifier): A search option
+# when searching text in a file
+searchModifier.caseSensitiveModifier=Match Case
+
+# LOCALIZATION NOTE(searchModifier.wholeWordModifier): A search option
+# when searching text in a file
+searchModifier.wholeWordModifier=Match Whole Word
+
+# LOCALIZATION NOTE (searchBox.clearButtonTitle): The title of the SearchBox clear input
+# button, which is displayed when the input is not empty.
+searchBox.clearButtonTitle=Clear filter input
+
+# LOCALIZATION NOTE treeNode.collapseButtonTitle): The title of the Tree node toggle
+# button when the node is expanded.
+treeNode.collapseButtonTitle=Collapse
+
+# LOCALIZATION NOTE treeNode.expandButtonTitle): The title of the Tree node toggle
+# button when the node is collapsed.
+treeNode.expandButtonTitle=Expand
diff --git a/l10n-en-GB/devtools/client/debugger.properties b/l10n-en-GB/devtools/client/debugger.properties
new file mode 100644
index 0000000000..4381a704b1
--- /dev/null
+++ b/l10n-en-GB/devtools/client/debugger.properties
@@ -0,0 +1,1159 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# LOCALIZATION NOTE These strings are used inside the Debugger
+# which is available from the Browser Tools sub-menu -> 'Debugger'.
+# The correct localization of this file might be to keep it in
+# English, or another language commonly spoken among web developers.
+# You want to make that choice consistent across the developer tools.
+# A good criteria is the language in which you'd find the best
+# documentation on web development on the web.
+
+# LOCALIZATION NOTE (collapseSources): This is the tooltip for the button
+# that collapses the Sources and Outlines panes in the debugger UI.
+collapseSources=Collapse Sources and Outline panes
+
+# LOCALIZATION NOTE (collapseBreakpoints): This is the tooltip for the button
+# that collapses the Breakpoints panes in the debugger UI.
+collapseBreakpoints=Collapse Breakpoints pane
+
+# LOCALIZATION NOTE (copyToClipboard.label): This is the text that appears in the
+# context menu to copy the text that the user selected.
+copyToClipboard.label=Copy to clipboard
+copyToClipboard.accesskey=C
+
+# LOCALIZATION NOTE (copySource.label): This is the text that appears in the
+# context menu to copy all of the text in the open file.
+copySource.label=Copy source text
+copySource.accesskey=y
+
+# LOCALIZATION NOTE (copySourceUri2): This is the text that appears in the
+# context menu to copy the source URI of file open.
+copySourceUri2=Copy source URI
+copySourceUri2.accesskey=u
+
+# LOCALIZATION NOTE (collapseAll.label): This is the text that appears in the
+# context menu to collapse a directory and all of its subdirectories.
+collapseAll.label=Collapse all
+
+# LOCALIZATION NOTE (expandAll.label): This is the text that appears in the
+# context menu to expand a directory and all of its subdirectories.
+expandAll.label=Expand all
+
+# LOCALIZATION NOTE (setDirectoryRoot.label): This is the text that appears in the
+# context menu to set a directory as root directory
+setDirectoryRoot.label=Set directory root
+setDirectoryRoot.accesskey=r
+
+# LOCALIZATION NOTE (removeDirectoryRoot.label): This is the text that appears in the
+# context menu to remove a directory as root directory
+removeDirectoryRoot.label=Remove directory root
+
+# LOCALIZATION NOTE (ignoreAll.label): Text associated with the ignore context menu item
+ignoreAll.label=Ignore
+
+# LOCALIZATION NOTE (ignoreAllInGroup.label): This is the text that appears in the
+# context submenu to ignore all files inside of the selected group
+ignoreAllInGroup.label=Ignore files in this group
+
+# LOCALIZATION NOTE (unignoreAllInGroup.label): This is the text that appears in the
+# context submenu to unignore all files inside of the selected group
+unignoreAllInGroup.label=Unignore files in this group
+
+# LOCALIZATION NOTE (ignoreAllOutsideGroup.label): This is the text that appears in the
+# context submenu to ignore all files outside of the selected group
+ignoreAllOutsideGroup.label=Ignore files outside this group
+
+# LOCALIZATION NOTE (unignoreAllOutsideGroup.label): This is the text that appears in the
+# context submenu to unignore all files outside of the selected group
+unignoreAllOutsideGroup.label=Unignore files outside this group
+
+# LOCALIZATION NOTE (ignoreAllInDir.label): This is the text that appears in the
+# context submenu to ignore all files inside of the selected directory
+ignoreAllInDir.label=Ignore files in this directory
+
+# LOCALIZATION NOTE (unignoreAllInDir.label): This is the text that appears in the
+# context submenu to unignore all files inside of the selected directory
+unignoreAllInDir.label=Unignore files in this directory
+
+# LOCALIZATION NOTE (ignoreAllOutsideDir.label): This is the text that appears in the
+# context submenu to ignore all files outside of the selected directory
+ignoreAllOutsideDir.label=Ignore files outside this directory
+
+# LOCALIZATION NOTE (unignoreAllOutsideDir.label: This is the text that appears in the
+# context submenu to unignore all files outside of the selected directory
+unignoreAllOutsideDir.label=Unignore files outside this directory
+
+# LOCALIZATION NOTE (copyFunction.label): This is the text that appears in the
+# context menu to copy the function the user selected
+copyFunction.label=Copy function
+copyFunction.accesskey=F
+
+# LOCALIZATION NOTE (copyStackTrace): This is the text that appears in the
+# context menu to copy the stack trace methods, file names and row number.
+copyStackTrace=Copy stack trace
+copyStackTrace.accesskey=C
+
+# LOCALIZATION NOTE (restartFrame): This is the text that appears in the
+# context menu to restart a frame.
+restartFrame=Restart frame
+restartFrame.accesskey=r
+
+# LOCALIZATION NOTE (expandSources): This is the tooltip for the button
+# that expands the Sources and Outlines panes in the debugger UI.
+expandSources=Expand Sources and Outline panes
+
+# LOCALIZATION NOTE (expandBreakpoints): This is the tooltip for the button
+# that expands the Breakpoints panes in the debugger UI.
+expandBreakpoints=Expand Breakpoints pane
+
+# LOCALIZATION NOTE (evaluateInConsole.label): Editor right-click menu item
+# to execute selected text in browser console.
+evaluateInConsole.label=Evaluate in console
+
+# LOCALIZATION NOTE (pauseButtonTooltip): The tooltip that is displayed for the pause
+# button when the debugger is in a running state.
+pauseButtonTooltip=Pause %S
+
+# LOCALIZATION NOTE (pausePendingButtonTooltip): The tooltip that is displayed for
+# the pause button after it's been clicked but before the next JavaScript to run.
+pausePendingButtonTooltip=Waiting for next execution
+
+# LOCALIZATION NOTE (startTraceButtonTooltip): The label that is displayed on the trace
+# button in the top of the debugger right sidebar. %S is for the log output location (webconsole or stdout).
+startTraceButtonTooltip=Trace all JavaScript frames to %S.\nRight click to change the output.
+
+# LOCALIZATION NOTE (stopTraceButtonTooltip): The label that is displayed on the trace
+# button in the top of the debugger right sidebar. This label is only displayed when we are current tracing
+# JavaScript.
+stopTraceButtonTooltip=Stop tracing JavaScript frames.
+
+# LOCALIZATION NOTE (startTraceButtonTooltip): The label that is displayed on the trace
+# button in the top of the debugger right sidebar.
+# %1$S is for the key shortcut
+# %2$S is for the log output location (webconsole or stdout).
+startTraceButtonTooltip2=Trace all JavaScript frames to %2$S. (%1$S)\nRight click to change the output.
+
+# LOCALIZATION NOTE (stopTraceButtonTooltip): The label that is displayed on the trace
+# button in the top of the debugger right sidebar. This label is only displayed when we are current tracing
+# JavaScript.
+# %S is for the key shortcut
+stopTraceButtonTooltip2=Stop tracing JavaScript frames. (%S)
+
+# LOCALIZATION NOTE (traceInWebConsole): The label that is displayed in the context menu
+# of the trace button, which is in the top of the debugger right sidebar.
+# This is used to force logging JavaScript traces in the Web Console.
+traceInWebConsole=Trace in the web console
+
+# LOCALIZATION NOTE (traceInWebConsole): The label that is displayed in the context menu
+# of the trace button, which is in the top of the debugger right sidebar.
+# This is used to force logging JavaScript traces in the stdout.
+traceInStdout=Trace in the stdout
+
+# LOCALIZATION NOTE (traceValues): The label that is displayed in the context menu
+# of the trace button, which is in the top of the debugger right sidebar.
+# This is used to enable logging arguments passed to function calls
+# as well as returned values (only for JS function calls, but not native function calls)
+traceValues=Log function arguments and returned values
+
+# LOCALIZATION NOTE (traceOnNextLoad): The label that is displayed in the context menu
+# of the trace button, which is in the top of the debugger right sidebar.
+# This is used to automatically start the tracing on next user interaction (mousedown/keydown)
+traceOnNextInteraction=Trace only on next user interaction (mousedown/keydown)
+
+# LOCALIZATION NOTE (resumeButtonTooltip): The label that is displayed on the pause
+# button when the debugger is in a paused state.
+resumeButtonTooltip=Resume %S
+
+# LOCALIZATION NOTE (stepOverTooltip): The label that is displayed on the
+# button that steps over a function call.
+stepOverTooltip=Step over %S
+
+# LOCALIZATION NOTE (stepInTooltip): The label that is displayed on the
+# button that steps into a function call.
+stepInTooltip=Step in %S
+
+# LOCALIZATION NOTE (stepOutTooltip): The label that is displayed on the
+# button that steps out of a function call.
+stepOutTooltip=Step out %S
+
+# LOCALIZATION NOTE (skipPausingTooltip.label): The tooltip text for disabling all
+# breakpoints and pausing triggers
+skipPausingTooltip.label=Deactivate breakpoints
+
+# LOCALIZATION NOTE (undoSkipPausingTooltip.label): The tooltip text for enabling all
+# breakpoints and pausing triggers
+undoSkipPausingTooltip.label=Activate breakpoints
+
+# LOCALIZATION NOTE (pauseOnDebuggerStatement): The pause on debugger statement checkbox label
+pauseOnDebuggerStatement=Pause on debugger statement
+
+# LOCALIZATION NOTE (pauseOnExceptionsItem2): The pause on exceptions checkbox description
+# when the debugger will pause on all exceptions.
+pauseOnExceptionsItem2=Pause on exceptions
+
+# LOCALIZATION NOTE (pauseOnCaughtExceptionsItem): The pause on exceptions checkbox description
+# when the debugger should pause on caught exceptions
+pauseOnCaughtExceptionsItem=Pause on caught exceptions
+
+# LOCALIZATION NOTE (threadsHeader): The text to describe the threads header
+threadsHeader=Threads
+
+# LOCALIZATION NOTE (mainThread): The text to describe the thread of the
+# program as opposed to worker threads.
+mainThread=Main Thread
+
+# LOCALIZATION NOTE (pausedThread): The text to describe the status of paused threads
+pausedThread=paused
+
+# LOCALIZATION NOTE (noSourcesText): The text to display in the sources list
+# when there are no sources.
+noSourcesText=This page has no sources.
+
+# LOCALIZATION NOTE (ignoredSourcesHidden): Notification message displayed in the
+# sources list footer when ignored sources are hidden.
+ignoredSourcesHidden=Ignored sources are hidden.
+
+# LOCALIZATION NOTE (showIgnoredSources): Notification button displayed in the
+# source next to the "ignored sources are hidden" string. Clicking on this link
+# shows all the ignored sources which are currently hidden.
+showIgnoredSources=Show all sources
+
+# LOCALIZATION NOTE (showIgnoredSources.tooltip.label): Message displayed in the tooltip of the notification
+# link displayed in the sources list footer when ignored sources are hidden.
+showIgnoredSources.tooltip.label=This will show all the ignored sources (which are currently hidden) in the tree.
+
+# LOCALIZATION NOTE (eventListenersHeader1): The text to display in the events
+# header.
+eventListenersHeader1=Event Listener Breakpoints
+
+# LOCALIZATION NOTE (noDomMutationBreakpoints): The text to
+# display in the DOM Mutation Breakpoints pane when there are no events.
+# %S will be replaced by an active link using inspectorTool as text
+noDomMutationBreakpoints=Right click an element in the %S and select “Break on…” to add a breakpoint
+
+# LOCALIZATION NOTE (inspectorTool): The text to describe the the Inspector tool
+inspectorTool=Inspector
+
+# LOCALIZATION NOTE (eventListenersHeader1.placeholder): The placeholder text in
+# the event search input bar
+eventListenersHeader1.placeholder=Filter by event type
+
+# LOCALIZATION NOTE (domMutationHeader): The text to display in the
+# DOM Mutation Breakpoints header
+domMutationHeader=DOM Mutation Breakpoints
+
+# LOCALIZATION NOTE (domMutationTypes.attribute): The text to display in the
+# DOM Mutation Breakpoints panel for an attribute change
+domMutationTypes.attribute=Attribute Modification
+
+# LOCALIZATION NOTE (domMutationTypes.removal): The text to display in the
+# DOM Mutation Breakpoints panel for a DOM node removal
+domMutationTypes.removal=Node Removal
+
+# LOCALIZATION NOTE (domMutationTypes.subtree): The text to display in the
+# DOM Mutation Breakpoints panel for a DOM subtree change
+domMutationTypes.subtree=Subtree Modification
+
+# LOCALIZATION NOTE (sources.search.key2): Key shortcut to open the search for
+# searching all the source files the debugger has seen.
+# Do not localize "CmdOrCtrl+P", or change the format of the string. These are
+# key identifiers, not messages displayed to the user.
+sources.search.key2=CmdOrCtrl+P
+
+# LOCALIZATION NOTE (sources.search.alt.key): A second key shortcut to open the
+# search for searching all the source files the debugger has seen.
+# Do not localize "CmdOrCtrl+O", or change the format of the string. These are
+# key identifiers, not messages displayed to the user.
+sources.search.alt.key=CmdOrCtrl+O
+
+# LOCALIZATION NOTE (projectTextSearch.key): A key shortcut to open the
+# full project text search for searching all the files the debugger has seen.
+# Do not localize "CmdOrCtrl+Shift+F", or change the format of the string. These are
+# key identifiers, not messages displayed to the user.
+projectTextSearch.key=CmdOrCtrl+Shift+F
+
+# LOCALIZATION NOTE (allShortcut.key): A key shortcut to open the
+# modal of full shortcuts list.
+# Do not localize "CmdOrCtrl+/", or change the format of the string. These are
+# key identifiers, not messages displayed to the user.
+allShortcut.key=CmdOrCtrl+/
+
+# LOCALIZATION NOTE (functionSearch.key): A key shortcut to open the
+# modal for searching functions in a file.
+# Do not localize "CmdOrCtrl+Shift+O", or change the format of the string. These are
+# key identifiers, not messages displayed to the user.
+functionSearch.key=CmdOrCtrl+Shift+O
+
+# LOCALIZATION NOTE (toggleBreakpoint.key): A key shortcut to toggle
+# breakpoints.
+# Do not localize "CmdOrCtrl+B", or change the format of the string. These are
+# key identifiers, not messages displayed to the user.
+toggleBreakpoint.key=CmdOrCtrl+B
+
+# LOCALIZATION NOTE (toggleCondPanel.breakpoint.key): A key shortcut to toggle
+# the conditional panel for breakpoints.
+# Do not localize "CmdOrCtrl+Shift+B", or change the format of the string. These are
+# key identifiers, not messages displayed to the user.
+toggleCondPanel.breakpoint.key=CmdOrCtrl+Shift+B
+
+# LOCALIZATION NOTE (toggleCondPanel.logPoint.key): A key shortcut to toggle
+# the conditional panel for log points.
+# Do not localize "CmdOrCtrl+Shift+Y", or change the format of the string. These are
+# key identifiers, not messages displayed to the user.
+toggleCondPanel.logPoint.key=CmdOrCtrl+Shift+Y
+
+# LOCALIZATION NOTE (stepOut.key): A key shortcut to
+# step out.
+stepOut.key=Shift+F11
+
+# LOCALIZATION NOTE (shortcuts.header.editor): Sections header in
+# the shortcuts modal for keyboard shortcuts related to editing.
+shortcuts.header.editor=Editor
+
+# LOCALIZATION NOTE (shortcuts.header.stepping): Sections header in
+# the shortcuts modal for keyboard shortcuts related to stepping.
+shortcuts.header.stepping=Stepping
+
+# LOCALIZATION NOTE (shortcuts.header.search): Sections header in
+# the shortcuts modal for keyboard shortcuts related to search.
+shortcuts.header.search=Search
+
+# LOCALIZATION NOTE (projectTextSearch.placeholder): A placeholder shown
+# when searching across all of the files in a project.
+projectTextSearch.placeholder=Find in files…
+
+# LOCALIZATION NOTE (projectTextSearch.excludePatterns.label): A label shown
+# above the exclude patterns field when searching across all of the files in a project.
+projectTextSearch.excludePatterns.label=files to exclude
+
+# LOCALIZATION NOTE (projectTextSearch.excludePatterns.placeholder): A placeholder shown
+# for the exclude patterns field when searching across all of the files in a project.
+projectTextSearch.excludePatterns.placeholder=e.g. **/node_modules/**,app.js
+
+# LOCALIZATION NOTE (projectTextSearch.noResults): The center pane Text Search
+# message when the query did not match any text of all files in a project.
+projectTextSearch.noResults=No results found
+
+# LOCALIZATION NOTE (projectTextSearch.pageNavigated): Tooltip shown on the refresh
+# button, only when it is highlighted because the page navigated to a new document
+# and the results might be obsolete.
+projectTextSearch.refreshButtonTooltip=Click to refresh search results
+
+# LOCALIZATION NOTE (projectTextSearch.pageNavigated): Tooltip shown on the refresh
+# button, only when it is highlighted because the page navigated to a new document
+# and the results might be obsolete.
+projectTextSearch.refreshButtonTooltipOnNavigation=The page navigated to a new document. Click to refresh search results
+
+# LOCALIZATION NOTE (projectTextSearch.sourceNoLongerAvailable): Tooltip message shown
+# on Text Search results when the related source no longer exists.
+# This typically happens after navigating or reloading the page and search results are obsolete.
+projectTextSearch.sourceNoLongerAvailable=This source is no longer available.\nRefresh the search to have latest sources.
+
+# LOCALIZATION NOTE (sourceSearch.search.key2): Key shortcut to open the search
+# for searching within a the currently opened files in the editor
+# Do not localize "CmdOrCtrl+F", or change the format of the string. These are
+# key identifiers, not messages displayed to the user.
+sourceSearch.search.key2=CmdOrCtrl+F
+
+# LOCALIZATION NOTE (sourceSearch.search.placeholder): placeholder text in
+# the source search input bar
+sourceSearch.search.placeholder=Search in file…
+
+# LOCALIZATION NOTE (sourceSearch.search.placeholder2): placeholder text in
+# the source search input bar
+sourceSearch.search.placeholder2=Find in file…
+
+# LOCALIZATION NOTE (sourceSearch.resultsSummary2): Semi-colon list of plural forms.
+# See: http://developer.mozilla.org/en/docs/Localization_and_Plurals
+# Shows a summary of the number of matches for autocomplete
+sourceSearch.resultsSummary2=#1 result;#1 results
+
+# LOCALIZATION NOTE (breakpointHeadingMenuItem.*): The text for all the elements
+# that are displayed in the breakpoint headings menu item popup.
+breakpointHeadingsMenuItem.enableInSource.label=Enable breakpoints
+breakpointHeadingsMenuItem.enableInSource.accesskey=E
+breakpointHeadingsMenuItem.disableInSource.label=Disable breakpoints
+breakpointHeadingsMenuItem.disableInSource.accesskey=D
+breakpointHeadingsMenuItem.removeInSource.label=Remove breakpoints
+breakpointHeadingsMenuItem.removeInSource.accesskey=R
+
+# LOCALIZATION NOTE (breakpointMenuItem): The text for all the elements that
+# are displayed in the breakpoints menu item popup.
+breakpointMenuItem.enableSelf2.label=Enable
+breakpointMenuItem.enableSelf2.accesskey=E
+breakpointMenuItem.disableSelf2.label=Disable
+breakpointMenuItem.disableSelf2.accesskey=D
+breakpointMenuItem.deleteSelf2.label=Remove
+breakpointMenuItem.deleteSelf2.accesskey=R
+breakpointMenuItem.disabledbg.label=Never pause here
+breakpointMenuItem.enabledbg.label=Pause here
+breakpointMenuItem.enableOthers2.label=Enable others
+breakpointMenuItem.enableOthers2.accesskey=o
+breakpointMenuItem.disableOthers2.label=Disable others
+breakpointMenuItem.disableOthers2.accesskey=s
+breakpointMenuItem.deleteOthers2.label=Remove others
+breakpointMenuItem.deleteOthers2.accesskey=h
+breakpointMenuItem.enableAll2.label=Enable all
+breakpointMenuItem.enableAll2.accesskey=b
+breakpointMenuItem.disableAll2.label=Disable all
+breakpointMenuItem.disableAll2.accesskey=k
+breakpointMenuItem.deleteAll2.label=Remove all
+breakpointMenuItem.deleteAll2.accesskey=a
+breakpointMenuItem.removeCondition2.label=Remove condition
+breakpointMenuItem.removeCondition2.accesskey=c
+breakpointMenuItem.addCondition2.label=Add condition
+breakpointMenuItem.addCondition2.accesskey=A
+breakpointMenuItem.editCondition2.label=Edit condition
+breakpointMenuItem.editCondition2.accesskey=n
+breakpointMenuItem.enableSelf=Enable breakpoint
+breakpointMenuItem.disableSelf=Disable breakpoint
+breakpointMenuItem.deleteSelf=Remove breakpoint
+breakpointMenuItem.enableOthers=Enable others
+breakpointMenuItem.disableOthers=Disable others
+breakpointMenuItem.deleteOthers=Remove others
+breakpointMenuItem.enableAll=Enable all breakpoints
+breakpointMenuItem.disableAll=Disable all breakpoints
+breakpointMenuItem.deleteAll=Remove all breakpoints
+breakpointMenuItem.disableAllAtLine.label=Disable breakpoints on line
+breakpointMenuItem.disableAllAtLine.accesskey=K
+breakpointMenuItem.enableAllAtLine.label=Enable breakpoints on line
+breakpointMenuItem.enableAllAtLine.accesskey=L
+breakpointMenuItem.removeAllAtLine.label=Remove breakpoints on line
+breakpointMenuItem.removeAllAtLine.accesskey=X
+
+# LOCALIZATION NOTE (breakpoints.header): Breakpoints right sidebar pane header.
+breakpoints.header=Breakpoints
+
+# LOCALIZATION NOTE (breakpoints.removeBreakpointTooltip): The tooltip that is displayed
+# for remove breakpoint button in right sidebar
+breakpoints.removeBreakpointTooltip=Remove breakpoint
+
+# LOCALIZATION NOTE (callStack.header): Call Stack right sidebar pane header.
+callStack.header=Call stack
+
+# LOCALIZATION NOTE (callStack.notPaused): Call Stack right sidebar pane
+# message when not paused.
+callStack.notPaused=Not paused
+
+# LOCALIZATION NOTE (callStack.collapse): Call Stack right sidebar pane
+# message to hide some of the frames that are shown.
+callStack.collapse=Collapse rows
+
+# LOCALIZATION NOTE (callStack.expand): Call Stack right sidebar pane
+# message to show more of the frames.
+callStack.expand=Expand rows
+
+# LOCALIZATION NOTE (callStack.group.expandTooltip): The text that will appear
+# when hovering a collapsed Group of frames in the callStack panel. `frames` is
+# always plural since a group can only exist if it contain more that 1 frame.
+# %S is replaced by the name of the library of the frames in the group.
+# example: `Show React frames`.
+callStack.group.expandTooltip=Show %S frames
+
+# LOCALIZATION NOTE (callStack.group.collapseTooltip): The text that will appear
+# when hovering an expanded Group of frames in the callStack panel. `frames` is
+# always plural since a group can only exist if it contain more that 1 frame.
+# %S is replaced by the name of the library of the frames in the group.
+# example: `Collapse React frames`.
+callStack.group.collapseTooltip=Collapse %S frames
+
+# LOCALIZATION NOTE (editor.searchResults1): Semi-colon list of plural forms.
+# See: http://developer.mozilla.org/en/docs/Localization_and_Plurals
+# Editor Search bar message to summarize the selected search result. e.g. 5 of 10 results.
+editor.searchResults1=%d of #1 result;%d of #1 results
+
+# LOCALIZATION NOTE (editor.noResultsFound): Editor Search bar message
+# for when no results found.
+editor.noResultsFound=No results found
+
+# LOCALIZATION NOTE (editor.searchResults.nextResult): Editor Search bar
+# tooltip for traversing to the Next Result
+editor.searchResults.nextResult=Next result
+
+# LOCALIZATION NOTE (editor.searchResults.prevResult): Editor Search bar
+# tooltip for traversing to the Previous Result
+editor.searchResults.prevResult=Previous result
+
+# LOCALIZATION NOTE (editor.continueToHere.label): Editor gutter context
+# menu item for jumping to a new paused location
+editor.continueToHere.label=Continue to here
+editor.continueToHere.accesskey=H
+
+# LOCALIZATION NOTE (editor.addBreakpoint): Editor gutter context menu item
+# for adding a breakpoint on a line.
+editor.addBreakpoint=Add breakpoint
+
+# LOCALIZATION NOTE (editor.disableBreakpoint): Editor gutter context menu item
+# for disabling a breakpoint on a line.
+editor.disableBreakpoint=Disable breakpoint
+editor.disableBreakpoint.accesskey=D
+
+# LOCALIZATION NOTE (editor.enableBreakpoint): Editor gutter context menu item
+# for enabling a breakpoint on a line.
+editor.enableBreakpoint=Enable breakpoint
+
+# LOCALIZATION NOTE (editor.removeBreakpoint): Editor gutter context menu item
+# for removing a breakpoint on a line.
+editor.removeBreakpoint=Remove breakpoint
+
+# LOCALIZATION NOTE (editor.addConditionBreakpoint): Editor gutter context
+# menu item for adding a breakpoint condition on a line.
+editor.addConditionBreakpoint=Add condition
+editor.addConditionBreakpoint.accesskey=c
+
+# LOCALIZATION NOTE (editor.editConditionBreakpoint): Editor gutter context menu item
+# for setting a breakpoint condition on a line.
+editor.editConditionBreakpoint=Edit condition
+
+# LOCALIZATION NOTE (editor.addLogPoint): Editor gutter context
+# menu item for adding a log point on a line.
+editor.addLogPoint=Add log
+editor.addLogPoint.accesskey=l
+
+# LOCALIZATION NOTE (editor.editLogPoint): Editor gutter context menu item
+# for editing a log point already set on a line.
+editor.editLogPoint=Edit log
+editor.editLogPoint.accesskey=E
+
+# LOCALIZATION NOTE (editor.removeLogPoint): Context menu item for removing
+# a log point on a line.
+editor.removeLogPoint.label=Remove log
+editor.removeLogPoint.accesskey=V
+
+# LOCALIZATION NOTE (editor.conditionalPanel.placeholder2): Placeholder text for
+# input element inside ConditionalPanel component
+editor.conditionalPanel.placeholder2=Breakpoint condition, e.g. items.length > 0
+
+# LOCALIZATION NOTE (editor.conditionalPanel.logPoint.placeholder2): Placeholder text for
+# input element inside ConditionalPanel component when a log point is set
+editor.conditionalPanel.logPoint.placeholder2=Log message, e.g. displayName
+
+# LOCALIZATION NOTE (editor.jumpToMappedLocation1): Context menu item
+# for navigating to a source mapped location
+editor.jumpToMappedLocation1=Jump to %S location
+editor.jumpToMappedLocation1.accesskey=m
+
+# LOCALIZATION NOTE (downloadFile.label): Context menu item
+# for downloading a source's content
+downloadFile.label=Download file
+downloadFile.accesskey=D
+
+# LOCALIZATION NOTE (inlinePreview.show.label): Context menu item
+# for showing the inline preview blocks
+inlinePreview.show.label=Show inline preview
+
+# LOCALIZATION NOTE (inlinePreview.hide.label): Context menu item
+# for hiding the inline preview block
+inlinePreview.hide.label=Hide inline preview
+
+# LOCALIZATION NOTE (inlinePreview.toggle.label): Context menu item
+# that will toggle display of inline preview
+inlinePreview.toggle.label=Inline Variable Preview
+
+# LOCALIZATION NOTE (inlinePreview.toggle.tooltip): Context menu item
+# tooltip that will describe toggling inline preview
+inlinePreview.toggle.tooltip=Show inline preview in the debugger editor
+
+# LOCALIZATION NOTE (editorWrapping.show.label): Context menu item
+# for showing the wrap lines block
+editorWrapping.show.label=Wrap lines
+
+# LOCALIZATION NOTE (editorWrapping.hide.label): Context menu item
+# for showing the wrap lines block
+editorWrapping.hide.label=Unwrap lines
+
+# LOCALIZATION NOTE (editorWrapping.toggle.label): Context menu item
+# label for toggling the lines wrapping feature
+editorWrapping.toggle.label=Wrap Lines
+
+# LOCALIZATION NOTE (editorWrapping.toggle.tooltip): Context menu item
+# tooltip for toggling the lines wrapping feature
+editorWrapping.toggle.tooltip=Wrap lines in the debugger editor
+
+# LOCALIZATION NOTE (settings.button.label): Label for Settings button
+settings.button.label=Debugger Settings
+
+# LOCALIZATION NOTE (settings.disableJavaScript.label): Context menu item
+# label for disabling JavaScript
+settings.disableJavaScript.label=Disable JavaScript
+
+# LOCALIZATION NOTE (settings.disableJavaScript.tooltip): Context menu item
+# tooltip for disabling JavaScript
+settings.disableJavaScript.tooltip=Disables JavaScript (Requires refresh)
+
+# LOCALIZATION NOTE (settings.toggleSourceMaps.tooltip): Context menu item
+# tooltip for toggling the source maps feature
+settings.toggleSourceMaps.tooltip=Enable Source Maps to let DevTools load your original sources in addition to your generated ones
+
+# LOCALIZATION NOTE (settings.toggleSourceMaps.label): Context menu item
+# label for toggling the source maps feature
+settings.toggleSourceMaps.label=Source Maps
+
+# LOCALIZATION NOTE (settings.hideIgnoredSources.tooltip): Context menu item
+# tooltip for hiding and showing all the ignored sources
+settings.hideIgnoredSources.tooltip=Hides all ignored sources in the Sources panel
+
+# LOCALIZATION NOTE (settings.hideIgnoredSources.label): Context menu item
+# label for hiding all ignored sources when enabled (indicated by the check mark)
+# Ignored sources will be shown when disabled (no check mark).
+settings.hideIgnoredSources.label=Hide Ignored Sources
+
+# LOCALIZATION NOTE (settings.enableSourceMapIgnoreList.tooltip): Context menu item
+# tooltip for ignoring all sources on the sourcemaps ignore list.
+# Note: x_google_ignoreList should not be translated.
+settings.enableSourceMapIgnoreList.tooltip=Ignores all sources on the source map x_google_ignoreList field.
+
+# LOCALIZATION NOTE (settings.enableSourceMapIgnoreList.label): Context menu item
+# label for ignoring all sources on the sourcemaps ignore list when enabled
+# (indicated by the check mark). The sources on the ignore list are un-ignored
+# when disabled (no check mark).
+# Note: Make sure to also keep 'sourceFooter.ignoreList' in sync when this changes
+settings.enableSourceMapIgnoreList.label=Ignore Known Third-party Scripts
+
+# LOCALIZATION NOTE (preview.noProperties): Label shown in the preview
+# popup when there are no properties to show.
+preview.noProperties=No properties
+
+# LOCALIZATION NOTE (framework.disableGrouping): This is the text that appears in the
+# context menu to disable framework grouping.
+framework.disableGrouping=Disable framework grouping
+framework.disableGrouping.accesskey=u
+
+# LOCALIZATION NOTE (framework.enableGrouping): This is the text that appears in the
+# context menu to enable framework grouping.
+framework.enableGrouping=Enable framework grouping
+framework.enableGrouping.accesskey=u
+
+# LOCALIZATION NOTE (generated): Source Map term for a server source location
+generated=generated
+
+# LOCALIZATION NOTE (original): Source Map term for a debugger UI source location
+original=original
+
+# LOCALIZATION NOTE (expressions.placeholder): Placeholder text for expression
+# input element
+expressions.placeholder=Add watch expression
+
+# LOCALIZATION NOTE (expressions.noOriginalScopes): Expressions right sidebar pane message
+# for when the`map variable names`is off and the debugger is paused in an original source
+expressions.noOriginalScopes=Original variables name mapping is turned off. Expression values might not be accurate.
+
+# LOCALIZATION NOTE (expressions.errorMsg): Error text for expression
+# input element
+expressions.errorMsg=Invalid expression…
+expressions.label=Add watch expression
+expressions.accesskey=e
+expressions.remove.tooltip=Remove watch expression
+
+# LOCALIZATION NOTE (xhrBreakpoints.header): The pause on any XHR breakpoints headings
+xhrBreakpoints.header=XHR Breakpoints
+xhrBreakpoints.placeholder=Break when URL contains
+xhrBreakpoints.label=Add XHR breakpoint
+
+# LOCALIZATION NOTE (xhrBreakpoints.removeAll.tooltip): For the `Remove all XHR breakpoints' button in the header of the XHR breakpoints panel
+xhrBreakpoints.removeAll.tooltip=Remove all XHR breakpoints
+
+
+# LOCALIZATION NOTE (xhrBreakpoints.item.label): message displayed when reaching a breakpoint for XHR requests. %S is replaced by the path provided as condition for the breakpoint.
+xhrBreakpoints.item.label=URL contains “%S”
+
+# LOCALIZATION NOTE (pauseOnAnyXHR): The pause on any XHR checkbox description
+# when the debugger will pause on any XHR requests.
+pauseOnAnyXHR=Pause on any URL
+
+# LOCALIZATION NOTE (watchpoints.submenu): This is the text for the watchpoints sub-menu.
+watchpoints.submenu=Break on…
+
+# LOCALIZATION NOTE (watchpoints.getWatchpoint): This is the text that appears in the
+# watchpoints sub-menu to add a "get" watchpoint on an object property.
+watchpoints.getWatchpoint=Property get
+
+# LOCALIZATION NOTE (watchpoints.setWatchpoint): This is the text that appears in the
+# watchpoints submenu to add a "set" watchpoint on an object property.
+watchpoints.setWatchpoint=Property set
+
+# LOCALIZATION NOTE (watchpoints.getOrSetWatchpoint): This is the text that appears in the
+# watchpoints submenu to add a "set" watchpoint on an object property.
+watchpoints.getOrSetWatchpoint=Property get or set
+
+# LOCALIZATION NOTE (watchpoints.removeWatchpoint): This is the text that appears in the
+# context menu to delete a watchpoint on an object property.
+watchpoints.removeWatchpoint=Remove watchpoint
+
+# LOCALIZATION NOTE (watchpoints.removeWatchpointTooltip): This is the text that appears in the
+# tooltip to delete a watchpoint on an object property.
+watchpoints.removeWatchpointTooltip=Remove watchpoint
+
+# LOCALIZATION NOTE (sourceTabs.closeTab): Editor source tab context menu item
+# for closing the selected tab below the mouse.
+sourceTabs.closeTab=Close tab
+sourceTabs.closeTab.accesskey=C
+sourceTabs.closeTab.key=CmdOrCtrl+W
+
+# LOCALIZATION NOTE (sourceTabs.closeOtherTabs): Editor source tab context menu item
+# for closing the other tabs.
+sourceTabs.closeOtherTabs=Close other tabs
+sourceTabs.closeOtherTabs.accesskey=o
+
+# LOCALIZATION NOTE (sourceTabs.closeTabsToEnd): Editor source tab context menu item
+# for closing the tabs to the end (the right for LTR languages) of the selected tab.
+sourceTabs.closeTabsToEnd=Close tabs to the right
+sourceTabs.closeTabsToEnd.accesskey=e
+
+# LOCALIZATION NOTE (sourceTabs.closeAllTabs): Editor source tab context menu item
+# for closing all tabs.
+sourceTabs.closeAllTabs=Close all tabs
+sourceTabs.closeAllTabs.accesskey=A
+
+# LOCALIZATION NOTE (sourceTabs.revealInTree): Editor source tab context menu item
+# for revealing source in tree.
+sourceTabs.revealInTree=Reveal in tree
+sourceTabs.revealInTree.accesskey=R
+
+# LOCALIZATION NOTE (sourceTabs.prettyPrint): Editor source tab context menu item
+# for pretty printing the source.
+sourceTabs.prettyPrint=Pretty print source
+sourceTabs.prettyPrint.accesskey=P
+
+# LOCALIZATION NOTE (sourceFooter.prettyPrint.isPrettyPrintedMessage): Tooltip text for the disabled
+# pretty print button in editor footer. This displays when the file is already pretty printed.
+sourceFooter.prettyPrint.isPrettyPrintedMessage=Can’t pretty print, file is already pretty printed
+
+# LOCALIZATION NOTE (sourceFooter.prettyPrint.isOriginalMessage): Tooltip text for the disabled
+# pretty print button in editor footer. This displays when the file is an original source.
+sourceFooter.prettyPrint.isOriginalMessage=Can’t pretty print original sources, file is already readable
+
+# LOCALIZATION NOTE (sourceFooter.prettyPrint.hasSourceMapMessage): Tooltip text for the disabled
+# pretty print button in editor footer. This displays when the file has a valid sourcemap with original sources.
+sourceFooter.prettyPrint.hasSourceMapMessage=Can’t pretty print generated sources with valid sourcemaps. Please use the original sources.
+
+# LOCALIZATION NOTE (sourceFooter.prettyPrint.noContentMessage): Tooltip text for the disabled
+# pretty print button in editor footer. This displays when the file has no content.
+sourceFooter.prettyPrint.noContentMessage=Can’t pretty print, file has no content
+
+# LOCALIZATION NOTE (sourceFooter.prettyPrint.isNotJavascriptMessage): Tooltip text for the disabled
+# pretty print button in editor footer. This displays when the file is not JavaScript code.
+sourceFooter.prettyPrint.isNotJavascriptMessage=Can’t pretty print, file is not JavaScript
+
+# LOCALIZATION NOTE (sourceFooter.ignores): Tooltip text associated
+# with the ignores button
+sourceFooter.ignore=Ignore source
+
+# LOCALIZATION NOTE (sourceFooter.unignore): Tooltip text associated
+# with the ignore button
+sourceFooter.unignore=Unignore source
+
+# LOCALIZATION NOTE (sourceFooter.ignoreList): Tooltip text associated
+# with the ignore source button when the selected source is on the ignore list
+sourceFooter.ignoreList=This source is on the ignore list. Please turn off the `Ignore Known Third-party Scripts` option to enable it.
+
+# LOCALIZATION NOTE (editorNotificationFooter.noOriginalScopes): The notification message displayed in the editor notification footer
+# when paused in an original file and original variable mapping is turned off
+# %S is text from the label for checkbox to show original scopes
+editorNotificationFooter.noOriginalScopes=Original variables name mapping is turned off, so all inline and tooltip previews are disabled. Click the `%S` tickbox in the scopes panel to turn them on.
+
+# LOCALIZATION NOTE (ignoreContextItem.ignore): Text associated
+# with the ignore context menu item
+ignoreContextItem.ignore=Ignore source
+ignoreContextItem.ignore.accesskey=I
+
+# LOCALIZATION NOTE (ignoreContextItem.unignore): Text associated
+# with the unignore context menu item
+ignoreContextItem.unignore=Unignore source
+ignoreContextItem.unignore.accesskey=U
+
+# LOCALIZATION NOTE (overridesContextItem.override): Text associated
+# with the add overrides context menu item
+overridesContextItem.override=Add script override
+overridesContextItem.override.accesskey=o
+
+# LOCALIZATION NOTE (overridesContextItem.removeOverride): Text associated
+# with the remove override context menu item
+overridesContextItem.removeOverride=Remove script override
+overridesContextItem.removeOverride.accesskey=o
+
+# LOCALIZATION NOTE (ignoreContextItem.ignoreLine): Text associated
+# with the ignore line context menu item
+ignoreContextItem.ignoreLine=Ignore line
+ignoreContextItem.ignoreLine.accesskey=l
+
+# LOCALIZATION NOTE (ignoreContextItem.unignoreLine): Text associated
+# with the unignore line context menu item
+ignoreContextItem.unignoreLine=Unignore line
+ignoreContextItem.unignoreLine.accesskey=n
+
+# LOCALIZATION NOTE (ignoreContextItem.ignoreLines): Text associated
+# with the ignore lines context menu item
+ignoreContextItem.ignoreLines=Ignore lines
+ignoreContextItem.ignoreLines.accesskey=i
+
+# LOCALIZATION NOTE (ignoreContextItem.unignoreLines): Text associated
+# with the unignore lines context menu item
+ignoreContextItem.unignoreLines=Unignore lines
+ignoreContextItem.unignoreLines.accesskey=u
+
+# LOCALIZATION NOTE (sourceFooter.mappedSource): Text associated
+# with a mapped source. %S is replaced by the source map origin.
+sourceFooter.mappedSource=(From %S)
+
+# LOCALIZATION NOTE (sourceFooter.mappedSourceTooltip): Tooltip text associated
+# with a mapped source. %S is replaced by the source map origin.
+sourceFooter.mappedSourceTooltip=(Source mapped from %S)
+
+# LOCALIZATION NOTE (sourceFooter.mappedOriginalSource.title): Text associated
+# with an original source mapped to a bundle. %S is replaced by the bundle url.
+sourceFooter.mappedOriginalSource.title=From %S
+
+# LOCALIZATION NOTE (sourceFooter.mappedOriginalSource.tooltip): Tooltip text associated
+# with an original source mapped to a bundle. %S is replaced by bundle url.
+sourceFooter.mappedOriginalSource.tooltip=Open related bundle (%S)
+
+# LOCALIZATION NOTE (sourceFooter.mappedGeneratedSource.title): Text associated
+# with a bundled source mapped to an original source. %S is replaced by the original source url.
+sourceFooter.mappedGeneratedSource.title=To %S
+
+# LOCALIZATION NOTE (sourceFooter.mappedGeneratedSource.tooltip): Tooltip text associated
+# with a bundled source mapped to an original source. %S is replaced by the original source url.
+sourceFooter.mappedGeneratedSource.tooltip=Open related original source (%S)
+
+# LOCALIZATION NOTE (sourceFooter.mappedSuffix): Text associated
+# with a mapped source.  Displays next to URLs in tree and tabs.
+sourceFooter.mappedSuffix=(mapped)
+
+# LOCALIZATION NOTE (sourceFooter.currentCursorPosition): Text associated
+# with the current cursor line and column
+sourceFooter.currentCursorPosition=(%1$S, %2$S)
+
+# LOCALIZATION NOTE (sourceFooter.currentCursorPosition.tooltip): Text associated
+# with the current cursor line and column
+sourceFooter.currentCursorPosition.tooltip=(Line %1$S, column %2$S)
+
+# LOCALIZATION NOTE (sourceTabs.closeTabButtonTooltip): The tooltip that is displayed
+# for close tab button in source tabs.
+sourceTabs.closeTabButtonTooltip=Close tab
+
+# LOCALIZATION NOTE (scopes.header): Scopes right sidebar pane header.
+scopes.header=Scopes
+
+# LOCALIZATION NOTE (scopes.notAvailable): Scopes right sidebar pane message
+# for when the debugger is paused, but there isn't pause data.
+scopes.notAvailable=Scopes unavailable
+
+# LOCALIZATION NOTE (scopes.noOriginalScopes): Scopes right sidebar pane message
+# for when original variable mapping is disabled. This is only displayed when paused in an original source.
+# %S is text from the label for checkbox to show original scopes
+scopes.noOriginalScopes=Original variables name mapping is turned off. Scopes cannot be displayed. Click the `%S` tickbox above to turn on.
+
+# LOCALIZATION NOTE (scopes.loadingOriginalScopes): Scopes right sidebar pane message
+# for when the debugger is still loading the original variable mapping information.
+scopes.loadingOriginalScopes=Loading variables for the original source…
+
+# LOCALIZATION NOTE (scopes.notPaused): Scopes right sidebar pane message
+# for when the debugger is not paused.
+scopes.notPaused=Not paused
+
+# LOCALIZATION NOTE (scopes.mapping.label): Scopes right sidebar pane
+# tooltip for checkbox and label
+scopes.mapping.label=Map original variable names
+
+# LOCALIZATION NOTE (eventlisteners.log.label): Event listeners tooltip for
+# checkbox and label
+eventlisteners.log.label=Log events to the console
+
+# LOCALIZATION NOTE (eventlisteners.log): Checkbox label for logging events
+eventlisteners.log=Log
+
+# LOCALIZATION NOTE (scopes.helpTooltip.label): Scopes right sidebar pane
+# icon tooltip for link to MDN
+scopes.helpTooltip.label=Learn more about map scopes
+
+# LOCALIZATION NOTE (scopes.map.label): Checkbox label to map scopes
+scopes.map.label=Map
+
+# LOCALIZATION NOTE (scopes.showOriginalScopesHelpTooltip): Scopes right sidebar pane
+# icon tooltip for link to MDN
+scopes.showOriginalScopesHelpTooltip=Learn more about mapping variables and showing the original scopes
+
+# LOCALIZATION NOTE (scopes.showOriginalScopesTooltip): Scopes right sidebar pane
+# tooltip for checkbox and label
+scopes.showOriginalScopesTooltip=Show the scopes with mapped variable names for the original source.
+
+# LOCALIZATION NOTE (scopes.showOriginalScopes): Checkbox label to show original scopes
+scopes.showOriginalScopes=Show original variables
+
+# LOCALIZATION NOTE (scopes.block): Refers to a block of code in
+# the scopes pane when the debugger is paused.
+scopes.block=Block
+
+# LOCALIZATION NOTE (sources.header): Sources left sidebar header
+sources.header=Sources
+
+# LOCALIZATION NOTE (outline.header): Outline left sidebar header
+outline.header=Outline
+
+# LOCALIZATION NOTE (search.header): Search left sidebar header
+search.header=Search
+
+# LOCALIZATION NOTE (outline.placeholder): Placeholder text for the filter input
+# element
+outline.placeholder=Filter functions
+
+# LOCALIZATION NOTE (outline.sortLabel): Label for the sort button
+outline.sortLabel=Sort by name
+
+# LOCALIZATION NOTE (outline.noFunctions): Outline text when there are no functions to display
+outline.noFunctions=No functions
+
+# LOCALIZATION NOTE (outline.noFileSelected): Outline text when there are no files selected
+outline.noFileSelected=No file selected
+
+# LOCALIZATION NOTE (sources.search): Sources left sidebar prompt
+# e.g. Cmd+P to search. On a mac, we use the command unicode character.
+# On windows, it's ctrl.
+sources.search=%S to search
+
+# LOCALIZATION NOTE (watchExpressions.header): Watch Expressions right sidebar
+# pane header.
+watchExpressions.header=Watch expressions
+
+# LOCALIZATION NOTE (watchExpressions.refreshButton): Watch Expressions header
+# button for refreshing the expressions.
+watchExpressions.refreshButton=Refresh
+
+# LOCALIZATION NOTE (welcome.search): The center pane welcome panel's
+# search prompt. e.g. cmd+p to search for files. On windows, it's ctrl, on
+# a mac we use the unicode character.
+welcome.search=%S to search for sources
+
+# LOCALIZATION NOTE (welcome.search2): The center pane welcome panel's
+# search prompt. e.g. cmd+p to search for files. On windows, it's ctrl, on
+# a mac we use the unicode character.
+welcome.search2=%S Go to file
+
+# LOCALIZATION NOTE (welcome.findInFiles): The center pane welcome panel's
+# search prompt. e.g. cmd+f to search for files. On windows, it's ctrl+shift+f, on
+# a mac we use the unicode character.
+welcome.findInFiles=%S to find in files
+
+# LOCALIZATION NOTE (welcome.findInFiles2): The center pane welcome panel's
+# search prompt. e.g. cmd+f to search for files. On windows, it's ctrl+shift+f, on
+# a mac we use the unicode character.
+welcome.findInFiles2=%S Find in files
+
+# LOCALIZATION NOTE (welcome.allShortcuts): The label to open the modal of
+# shortcuts, displayed in the welcome panel.
+welcome.allShortcuts=Show all shortcuts
+
+# LOCALIZATION NOTE (sourceSearch.search): The center pane Source Search
+# prompt for searching for files.
+sourceSearch.search=Search sources…
+
+# LOCALIZATION NOTE (sourceSearch.search2): The center pane Source Search
+# prompt for searching for files.
+sourceSearch.search2=Go to file…
+
+# LOCALIZATION NOTE (pauseOnExceptions): The pause on exceptions button tooltip
+# when the debugger will pause on all exceptions.
+pauseOnExceptions=Pause on all exceptions. Click to ignore exceptions
+
+# LOCALIZATION NOTE (loadingText): The text that is displayed in the script
+# editor when the loading process has started but there is no file to display
+# yet.
+loadingText=Loading\u2026
+
+# LOCALIZATION NOTE (wasmIsNotAvailable): The text that is displayed in the
+# script editor when the WebAssembly source is not available.
+wasmIsNotAvailable=Please refresh to debug this module
+
+# LOCALIZATION NOTE (errorLoadingText3): The text that is displayed in the debugger
+# viewer when there is an error loading a file
+errorLoadingText3=Error loading this URI: %S
+
+# LOCALIZATION NOTE(gotoLineModal.placeholder): The placeholder
+# text displayed when the user searches for specific lines in a file
+gotoLineModal.placeholder=Go to line…
+
+# LOCALIZATION NOTE(gotoLineModal.title): The message shown to users
+# to open the go to line modal
+gotoLineModal.title=Go to a line number in a file
+
+# LOCALIZATION NOTE(gotoLineModal.key3): The shortcut for opening the
+# go to line modal
+# Do not localize "Ctrl+G", or change the format of the string. These are
+# key identifiers, not messages displayed to the user.
+gotoLineModal.key3=Ctrl+G
+
+# LOCALIZATION NOTE(symbolSearch.search.functionsPlaceholder): The placeholder
+# text displayed when the user searches for functions in a file
+symbolSearch.search.functionsPlaceholder=Search functions…
+symbolSearch.search.functionsPlaceholder.title=Search for a function in a file
+
+# LOCALIZATION NOTE(symbolSearch.search.variablesPlaceholder): The placeholder
+# text displayed when the user searches for variables in a file
+symbolSearch.search.variablesPlaceholder=Search variables…
+symbolSearch.search.variablesPlaceholder.title=Search for a variable in a file
+
+# LOCALIZATION NOTE(symbolSearch.search.key2): The Key Shortcut for
+# searching for a function or variable
+# Do not localize "CmdOrCtrl+Shift+O", or change the format of the string. These are
+# key identifiers, not messages displayed to the user.
+symbolSearch.search.key2=CmdOrCtrl+Shift+O
+
+experimental=This is an experimental feature
+
+# LOCALIZATION NOTE (ctrl): The text that is used for documenting
+# keyboard shortcuts that use the control key
+ctrl=Ctrl
+
+# LOCALIZATION NOTE (anonymousFunction): this string is used to display
+# JavaScript functions that have no given name - they are said to be
+# anonymous.
+anonymousFunction=<anonymous>
+
+# LOCALIZATION NOTE (stacktrace.asyncStack): this string is used to
+# indicate that a given stack frame has an async parent.
+# %S is the "Async Cause" of the frame.
+stacktrace.asyncStack=(Async: %S)
+
+# LOCALIZATION NOTE (shortcuts.toggleBreakpoint): text describing
+# keyboard shortcut action for toggling breakpoint
+shortcuts.toggleBreakpoint=Toggle Breakpoint
+shortcuts.toggleBreakpoint.accesskey=B
+
+# LOCALIZATION NOTE (shortcuts.toggleCondPanel.breakpoint): text describing
+# keyboard shortcut action for toggling conditional panel for breakpoints
+shortcuts.toggleCondPanel.breakpoint=Edit Conditional Breakpoint
+
+# LOCALIZATION NOTE (shortcuts.toggleCondPanel.logPoint): text describing
+# keyboard shortcut action for toggling conditional panel for log points
+shortcuts.toggleCondPanel.logPoint=Edit Log Point
+
+# LOCALIZATION NOTE (shortcuts.pauseOrResume): text describing
+# keyboard shortcut action for pause of resume
+shortcuts.pauseOrResume=Pause/Resume
+
+# LOCALIZATION NOTE (shortcuts.stepOver): text describing
+# keyboard shortcut action for stepping over
+shortcuts.stepOver=Step Over
+
+# LOCALIZATION NOTE (shortcuts.stepIn): text describing
+# keyboard shortcut action for stepping in
+shortcuts.stepIn=Step In
+
+# LOCALIZATION NOTE (shortcuts.stepOut): text describing
+# keyboard shortcut action for stepping out
+shortcuts.stepOut=Step Out
+
+# LOCALIZATION NOTE (shortcuts.fileSearch): text describing
+# keyboard shortcut action for source file search
+shortcuts.fileSearch=Source File Search
+
+# LOCALIZATION NOTE (shortcuts.fileSearch2): text describing
+# keyboard shortcut action for source file search
+shortcuts.fileSearch2=Go to file
+
+# LOCALIZATION NOTE (shortcuts.gotoLine): text describing
+# keyboard shortcut for jumping to a specific line
+shortcuts.gotoLine=Go to line
+
+# LOCALIZATION NOTE (shortcuts.projectSearch): text describing
+# keyboard shortcut action for full project search
+shortcuts.projectSearch=Full Project Search
+
+# LOCALIZATION NOTE (shortcuts.projectSearch2): text describing
+# keyboard shortcut action for full project search
+shortcuts.projectSearch2=Find in files
+
+# LOCALIZATION NOTE (shortcuts.functionSearch): text describing
+# keyboard shortcut action for function search
+shortcuts.functionSearch=Function Search
+
+# LOCALIZATION NOTE (shortcuts.functionSearch2): text describing
+# keyboard shortcut action for function search
+shortcuts.functionSearch2=Find function
+
+# LOCALIZATION NOTE (shortcuts.buttonName): text describing
+# keyboard shortcut button text
+shortcuts.buttonName=Keyboard shortcuts
+
+# LOCALIZATION NOTE (variablesSeparatorLabel): The text that is displayed
+# in the variables list as a separator between the name and value.
+variablesSeparatorLabel=:
+variablesViewOptimizedOut=(optimised away)
+variablesViewUninitialized=(uninitialised)
+variablesViewMissingArgs=(unavailable)
+
+# LOCALIZATION NOTE (variablesDomNodeValueTooltip): The text that is displayed
+# in a tooltip on the "open in inspector" button in the the variables list for a
+# DOMNode item.
+variablesDomNodeValueTooltip=Click to select the node in the inspector
+
+# LOCALIZATION NOTE (variablesEditButtonTooltip): The text that is displayed
+# in the variables list on a getter or setter which can be edited.
+variablesEditButtonTooltip=Click to set value
+
+# LOCALIZATION NOTE (variablesViewErrorStacktrace): This is the text that is
+# shown before the stack trace in an error.
+variablesViewErrorStacktrace=Stack trace:
+
+# LOCALIZATION NOTE (variablesViewMoreObjects): the text that is displayed
+# when you have an object preview that does not show all of the elements. At the end of the list
+# you see "N more..." in the web console output.
+# This is a semi-colon list of plural forms.
+# See: http://developer.mozilla.org/en/docs/Localization_and_Plurals
+# #1 number of remaining items in the object
+# example: 3 more…
+variablesViewMoreObjects=#1 more…;#1 more…
+
+# LOCALIZATION NOTE (variablesEditableNameTooltip): The text that is displayed
+# in the variables list on an item with an editable name.
+variablesEditableNameTooltip=Double click to edit
+
+# LOCALIZATION NOTE (variablesEditableValueTooltip): The text that is displayed
+# in the variables list on an item with an editable value.
+variablesEditableValueTooltip=Click to change value
+
+# LOCALIZATION NOTE (variablesCloseButtonTooltip): The text that is displayed
+# in the variables list on an item which can be removed.
+variablesCloseButtonTooltip=Click to remove
+
+# LOCALIZATION NOTE (configurable|...|Tooltip): The text that is displayed
+# in the variables list on certain variables or properties as tooltips.
+# Explanations of what these represent can be found at the following links:
+# https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/defineProperty
+# https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/isExtensible
+# https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/isFrozen
+# https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/isSealed
+# It's probably best to keep these in English.
+configurableTooltip=configurable
+enumerableTooltip=enumerable
+writableTooltip=writable
+frozenTooltip=frozen
+sealedTooltip=sealed
+extensibleTooltip=extensible
+overriddenTooltip=overridden
+WebIDLTooltip=WebIDL
+
+# LOCALIZATION NOTE (serviceWorkerInfo.parsed): State displayed for a service
+# worker that has been parsed.
+serviceWorkerInfo.parsed=parsed
+# LOCALIZATION NOTE (serviceWorkerInfo.installing): State displayed for a
+# service worker that is being installed.
+serviceWorkerInfo.installing=installing
+# LOCALIZATION NOTE (serviceWorkerInfo.installed): State displayed for a
+# service worker that has finished being installed.
+serviceWorkerInfo.installed=installed
+# LOCALIZATION NOTE (serviceWorkerInfo.activating): State displayed for a
+# service worker that is being activated.
+serviceWorkerInfo.activating=activating
+# LOCALIZATION NOTE (serviceWorkerInfo.activated): State displayed for a
+# service worker that has finished being activated.
+serviceWorkerInfo.activated=activated
+# LOCALIZATION NOTE (serviceWorkerInfo.redundant): State displayed for a
+# service worker that is redundant.
+serviceWorkerInfo.redundant=redundant
+# LOCALIZATION NOTE (serviceWorkerInfo.unknown): State displayed for a
+# service worker that is in an unknown state.
+serviceWorkerInfo.unknown=unknown
diff --git a/l10n-en-GB/devtools/client/device.properties b/l10n-en-GB/devtools/client/device.properties
new file mode 100644
index 0000000000..9c7e26b704
--- /dev/null
+++ b/l10n-en-GB/devtools/client/device.properties
@@ -0,0 +1,21 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# LOCALIZATION NOTE These strings are used inside Device Emulation developer
+# tools. The correct localization of this file might be to keep it in English,
+# or another language commonly spoken among web developers.  You want to make
+# that choice consistent across the developer tools.  A good criteria is the
+# language in which you'd find the best documentation on web development on the
+# web.
+
+# LOCALIZATION NOTE:
+# These strings are category names in a list of devices that a user can choose
+# to simulate (e.g. "ZTE Open C", "VIA Vixen", "720p HD Television", etc).
+device.phones=Phones
+device.tablets=Tablets
+device.laptops=Laptops
+device.televisions=TVs
+device.consoles=Gaming consoles
+device.watches=Watches
+device.custom=Custom
diff --git a/l10n-en-GB/devtools/client/dom.properties b/l10n-en-GB/devtools/client/dom.properties
new file mode 100644
index 0000000000..f2d060a469
--- /dev/null
+++ b/l10n-en-GB/devtools/client/dom.properties
@@ -0,0 +1,27 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# LOCALIZATION NOTE These strings are used inside the DOM panel
+# which is available from the Web Developer sub-menu -> 'DOM'.
+# The correct localization of this file might be to keep it in
+# English, or another language commonly spoken among web developers.
+# You want to make that choice consistent across the developer tools.
+# A good criteria is the language in which you'd find the best
+# documentation on web development on the web.
+
+# LOCALIZATION NOTE These strings are used inside the DOM panel
+# which is available from the Browser Tools sub-menu -> 'DOM'.
+# The correct localization of this file might be to keep it in
+# English, or another language commonly spoken among web developers.
+# You want to make that choice consistent across the developer tools.
+# A good criteria is the language in which you'd find the best
+# documentation on web development on the web.
+
+# LOCALIZATION NOTE (dom.filterDOMPanel): A placeholder text used for
+# DOM panel search box.
+dom.filterDOMPanel=Filter DOM Panel
+
+# LOCALIZATION NOTE (dom.refresh): A label for Refresh button in
+# DOM panel toolbar
+dom.refresh=Refresh
diff --git a/l10n-en-GB/devtools/client/filterwidget.properties b/l10n-en-GB/devtools/client/filterwidget.properties
new file mode 100644
index 0000000000..5141cde14c
--- /dev/null
+++ b/l10n-en-GB/devtools/client/filterwidget.properties
@@ -0,0 +1,61 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# LOCALIZATION NOTE These strings are used in the CSS Filter Editor Widget
+# which can be found in a tooltip that appears in the Rule View when clicking
+# on a filter swatch displayed next to CSS declarations like 'filter: blur(2px)'.
+
+# LOCALIZATION NOTE (emptyFilterList):
+# This string is displayed when filter's list is empty
+# (no filter specified / all removed)
+emptyFilterList=No filter specified
+
+# LOCALIZATION NOTE (emptyPresetList):
+# This string is displayed when preset's list is empty
+emptyPresetList=You don’t have any saved presets. \
+You can store filter presets by choosing a name and saving them. \
+Presets are quickly accessible and you can re-use them with ease.
+
+# LOCALIZATION NOTE (addUsingList):
+# This string is displayed under [emptyFilterList] when filter's
+# list is empty, guiding user to add a filter using the list below it
+addUsingList=Add a filter using the list below
+
+# LOCALIZATION NOTE (dropShadowPlaceholder):
+# This string is used as a placeholder for drop-shadow's input
+# in the filter list (shown when <input> is empty)
+dropShadowPlaceholder=x y radius colour
+
+# LOCALIZATION NOTE (dragHandleTooltipText):
+# This string is used as a tooltip text (shown on mouse hover) on the
+# drag handles of filters which are used to re-order filters
+dragHandleTooltipText=Drag up or down to re-order filter
+
+# LOCALIZATION NOTE (labelDragTooltipText):
+# This string is used as a tooltip text (shown on mouse hover) on the
+# filters' labels which can be dragged left/right to increase/decrease
+# the filter's value (like photoshop)
+labelDragTooltipText=Drag left or right to decrease or increase the value
+
+# LOCALIZATION NOTE (filterListSelectPlaceholder):
+# This string is used as a preview option in the list of possible filters
+# <select>
+filterListSelectPlaceholder=Select a Filter
+
+# LOCALIZATION NOTE (addNewFilterButton):
+# This string is displayed on a button used to add new filters
+addNewFilterButton=Add
+
+# LOCALIZATION NOTE (newPresetPlaceholder):
+# This string is used as a placeholder in the list of presets which is used to
+# save a new preset
+newPresetPlaceholder=Preset Name
+
+# LOCALIZATION NOTE (savePresetButton):
+# This string is displayed on a button used to save a new preset
+savePresetButton=Save
+
+# LOCALIZATION NOTE(presetsToggleButton):
+# This string is used in a button which toggles the presets list
+presetsToggleButton=Presets
diff --git a/l10n-en-GB/devtools/client/font-inspector.properties b/l10n-en-GB/devtools/client/font-inspector.properties
new file mode 100644
index 0000000000..eaf33d2c3f
--- /dev/null
+++ b/l10n-en-GB/devtools/client/font-inspector.properties
@@ -0,0 +1,69 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# LOCALIZATION NOTE This file contains the Font Inspector strings.
+# The Font Inspector is a panel accessible in the Inspector sidebar.
+
+# LOCALIZATION NOTE (fontinspector.system) This label indicates that the font is a local
+# system font.
+fontinspector.system=system
+
+# LOCALIZATION NOTE (fontinspector.noFontsUsedOnCurrentElement): This label is shown when
+# no fonts were used on the selected element.
+fontinspector.noFontsUsedOnCurrentElement=No fonts used on the current element.
+
+# LOCALIZATION NOTE (fontinspector.copyURL): This is the text that appears in a tooltip
+# displayed when the user hovers over the copy icon next to the font URL.
+# Clicking the copy icon copies the full font URL to the user's clipboard
+fontinspector.copyURL=Copy URL
+
+# LOCALIZATION NOTE (fontinspector.customInstanceName): Think of instances as presets
+# (groups of settings that apply in bulk to a thing). Instances have names. When the user
+# creates a new instance, it doesn't have a name. This is the text that appears as the
+# default name for a new instance. It shows up in a dropdown from which users can select
+# between predefined instances and this custom instance.
+fontinspector.customInstanceName=Custom
+
+# LOCALIZATION NOTE (fontinspector.fontInstanceLabel): This label is shown next to the UI
+# in the font editor which allows a user to select a font instance option from a
+# dropdown. An instance is like a preset. A "font instance" is the term used by the font
+# authors to mean a group of predefined font settings.
+fontinspector.fontInstanceLabel=Instance
+
+# LOCALIZATION NOTE (fontinspector.fontSizeLabel): This label is shown next to the UI
+# in the font editor which allows the user to change the font size.
+fontinspector.fontSizeLabel=Size
+
+# LOCALIZATION NOTE (fontinspector.fontWeightLabel): This label is shown next to the UI
+# in the font editor which allows the user to change the font weight.
+fontinspector.fontWeightLabel=Weight
+
+# LOCALIZATION NOTE (fontinspector.fontItalicLabel): This label is shown next to the UI
+# in the font editor which allows the user to change the style of the font to italic.
+fontinspector.fontItalicLabel=Italic
+
+# LOCALIZATION NOTE (fontinspector.showMore): Label for a collapsed list of fonts.
+fontinspector.showMore=Show more
+
+# LOCALIZATION NOTE (fontinspector.showLess): Label for an expanded list of fonts.
+fontinspector.showLess=Show less
+
+# LOCALIZATION NOTE (fontinspector.letterSpacingLabel): Label for the UI to change the
+# letter spacing in the font editor.
+fontinspector.letterSpacingLabel=Spacing
+
+# LOCALIZATION NOTE (fontinspector.lineHeightLabelCapitalized): Label for the UI to change the line height in the font editor.
+fontinspector.lineHeightLabelCapitalized=Line Height
+
+# LOCALIZATION NOTE (fontinspector.allFontsOnPageHeader): Header for the section listing
+# all the fonts on the current page.
+fontinspector.allFontsOnPageHeader=All Fonts on Page
+
+# LOCALIZATION NOTE (fontinspector.fontsUsedLabel): Label for the Font Editor section
+# which shows the fonts used on the selected element.
+fontinspector.fontsUsedLabel=Fonts Used
+
+# LOCALIZATION NOTE (fontinspector.previewTextPlaceholder): Placeholder for the input
+# where the user can type text to get a preview of it using a font.
+fontinspector.previewTextPlaceholder=Font Preview Text
diff --git a/l10n-en-GB/devtools/client/har.properties b/l10n-en-GB/devtools/client/har.properties
new file mode 100644
index 0000000000..b14ef1ad50
--- /dev/null
+++ b/l10n-en-GB/devtools/client/har.properties
@@ -0,0 +1,30 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# LOCALIZATION NOTE These strings are used inside the Network Monitor
+# which is available from the Web Developer sub-menu -> 'Network Monitor'.
+# The correct localization of this file might be to keep it in
+# English, or another language commonly spoken among web developers.
+# You want to make that choice consistent across the developer tools.
+# A good criteria is the language in which you'd find the best
+# documentation on web development on the web.
+
+# LOCALIZATION NOTE These strings are used inside the Network Monitor
+# which is available from the Browser Tools sub-menu -> 'Network Monitor'.
+# The correct localization of this file might be to keep it in
+# English, or another language commonly spoken among web developers.
+# You want to make that choice consistent across the developer tools.
+# A good criteria is the language in which you'd find the best
+# documentation on web development on the web.
+
+# LOCALIZATION NOTE (har.responseBodyNotIncluded): A label used within
+# HAR file explaining that HTTP response bodies are not includes
+# in exported data.
+har.responseBodyNotIncluded=Response bodies are not included.
+
+# LOCALIZATION NOTE (har.responseBodyNotIncluded): A label used within
+# HAR file explaining that HTTP request bodies are not includes
+# in exported data.
+har.requestBodyNotIncluded=Request bodies are not included.
+
diff --git a/l10n-en-GB/devtools/client/inspector.properties b/l10n-en-GB/devtools/client/inspector.properties
new file mode 100644
index 0000000000..cffbe4dbcf
--- /dev/null
+++ b/l10n-en-GB/devtools/client/inspector.properties
@@ -0,0 +1,602 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# LOCALIZATION NOTE These strings are used inside the Inspector
+# which is available from the Browser Tools sub-menu -> 'Inspect'.
+#
+# The correct localization of this file might be to keep it in
+# English, or another language commonly spoken among web developers.
+# You want to make that choice consistent across the developer tools.
+# A good criteria is the language in which you'd find the best
+# documentation on web development on the web.
+
+inspector.panelLabel.markupView=Markup View
+
+# LOCALIZATION NOTE (markupView.more.showing)
+# When there are too many nodes to load at once, we will offer to
+# show all the nodes.
+markupView.more.showing=Some nodes were hidden.
+
+# LOCALIZATION NOTE (markupView.more.showAll2): Semi-colon list of plural forms.
+# See: http://developer.mozilla.org/en/docs/Localization_and_Plurals
+markupView.more.showAll2=Show one more node;Show all #1 nodes
+
+# LOCALIZATION NOTE (markupView.whitespaceOnly.label)
+# Used in the badge that appears when whitespace-only text nodes are displayed in the
+# inspector.
+markupView.whitespaceOnly.label=whitespace
+
+# LOCALIZATION NOTE (markupView.unavailableChildren.label)
+# Used in the badge that appears when the Browser Toolbox is in "parent-process"
+# mode and the markup view cannot display the children from a content browser.
+markupView.unavailableChildren.label=unavailable
+
+# LOCALIZATION NOTE (markupView.unavailableChildren.title)
+# Title for the badge that appears when the Browser Toolbox is in "parent-process"
+# mode and the markup view cannot display the children from a content browser.
+markupView.unavailableChildren.title=Children of this element are unavailable with the current Browser Toolbox mode
+
+# LOCALIZATION NOTE (markupView.whitespaceOnly)
+# Used in a tooltip that appears when the user hovers over whitespace-only text nodes in
+# the inspector. %S in the content will be replaced by the whitespace characters used in
+# the text node.
+markupView.whitespaceOnly=Whitespace-only text node: %S
+
+# LOCALIZATION NOTE (markupView.display.flex.tooltiptext2)
+# Used in a tooltip that appears when the user hovers over the display type button in
+# the markup view.
+markupView.display.flex.tooltiptext2=This element behaves like a block element and lays out its content according to the flexbox model. Click to toggle the flexbox overlay for this element.
+
+# LOCALIZATION NOTE (markupView.display.inlineFlex.tooltiptext2)
+# Used in a tooltip that appears when the user hovers over the display type button in
+# the markup view.
+markupView.display.inlineFlex.tooltiptext2=This element behaves like an inline element and lays out its content according to the flexbox model. Click to toggle the flexbox overlay for this element.
+
+# LOCALIZATION NOTE (markupView.display.grid.tooltiptext2)
+# Used in a tooltip that appears when the user hovers over the display type button in
+# the markup view.
+markupView.display.grid.tooltiptext2=This element behaves like a block element and lays out its content according to the grid model. Click to toggle the grid overlay for this element.
+
+# LOCALIZATION NOTE (markupView.display.inlineGrid.tooltiptext2)
+# Used in a tooltip that appears when the user hovers over the display type button in
+# the markup view.
+markupView.display.inlineGrid.tooltiptext2=This element behaves like an inline element and lays out its content according to the grid model. Click to toggle the grid overlay for this element.
+
+# LOCALIZATION NOTE (markupView.display.subgrid.tooltiptext)
+# Used in a tooltip that appears when the user hovers over the display type button in
+# the markup view.
+markupView.display.subgrid.tooltiptiptext=This element lays out its content according to the grid model but defers the definition of its rows and/or columns to its parent grid container.
+
+# LOCALIZATION NOTE (markupView.display.flowRoot.tooltiptext)
+# Used in a tooltip that appears when the user hovers over the display type button in
+# the markup view.
+markupView.display.flowRoot.tooltiptext=This element generates a block element box that establishes a new block formatting context.
+
+# LOCALIZATION NOTE (markupView.display.contents.tooltiptext2)
+# Used in a tooltip that appears when the user hovers over the display type button in
+# the markup view.
+markupView.display.contents.tooltiptext2=This element doesn’t produce a specific box by itself, but renders its contents.
+
+# LOCALIZATION NOTE (markupView.event.tooltiptext)
+# Used in a tooltip that appears when the user hovers over 'event' badge in
+# the markup view.
+markupView.event.tooltiptext=Event listener
+
+# LOCALIZATION NOTE (markupView.event.tooltiptext)
+# Used in a tooltip that appears when the user hovers over 'event' badge in
+# the markup view.
+markupView.event.tooltiptext2=Click to show event listeners for this element
+
+# LOCALIZATION NOTE (markupView.custom.tooltiptext)
+# Used in a tooltip that appears when the user hovers over 'custom' badge in
+# the markup view. Only displayed on custom elements with a shadow root attached.
+markupView.custom.tooltiptext=Show custom element definition
+
+# LOCALIZATION NOTE (markupView.newAttribute.label)
+# This is used to speak the New Attribute button when editing a tag
+# and a screen reader user tabs to it. This string is not visible onscreen.
+markupView.newAttribute.label=New attribute
+
+# LOCALIZATION NOTE (markupView.revealLink.tooltip)
+# Used as a tooltip for an icon in the markup view when displaying elements inserted in
+# <slot> nodes in a custom  component. When clicking on the icon, the corresponding
+# non-slotted container will be selected
+markupView.revealLink.tooltip=Reveal
+
+#LOCALIZATION NOTE: Used in the image preview tooltip when the image could not be loaded
+previewTooltip.image.brokenImage=Could not load the image
+
+# LOCALIZATION NOTE: Used in color picker tooltip when the eyedropper is disabled for
+# non-HTML documents
+eyedropper.disabled.title=Unavailable in non-HTML documents
+
+#LOCALIZATION NOTE: Used in the event tooltip to allow the debugger to be opened
+eventsTooltip.openInDebugger=Open in Debugger
+
+# LOCALIZATION NOTE: Used in the event tooltip for the toggle button.
+# Parameter is the event type (e.g. "click")
+eventsTooltip.toggleButton.label=“%S” event listener code
+
+#LOCALIZATION NOTE: Used in the event tooltip to allow the debugger to be opened
+eventsTooltip.openInDebugger2=Open “%S” in Debugger
+
+#LOCALIZATION NOTE: Used in the event tooltip when a script's filename cannot be detected
+eventsTooltip.unknownLocation=Unknown location
+
+#LOCALIZATION NOTE: Used in the mouseover tooltip when hovering "Unknown location."
+eventsTooltip.unknownLocationExplanation=The original location of this listener cannot be detected. Maybe the code is transpiled by a utility such as Babel.
+
+# LOCALIZATION NOTE: Label for the checkbox in the event tooltip that toggles event listeners
+# Parameter is the event type (e.g. "click")
+eventsTooltip.toggleListenerLabel=Enable “%S” event listener
+
+#LOCALIZATION NOTE: Used in the tooltip for Bubbling
+eventsTooltip.Bubbling=Bubbling
+
+#LOCALIZATION NOTE: Used in the tooltip for Capturing
+eventsTooltip.Capturing=Capturing
+
+# LOCALIZATION NOTE: Title of the iframe we use in the event tooltip to display the code of
+# the event listener. Parameter is the event type (e.g. "click")
+eventsTooltip.codeIframeTitle=“%S” event listener code
+
+# LOCALIZATION NOTE (allTabsMenuButton.tooltip): The tooltip that gets
+# displayed when hovering over the tabs overflow button.
+allTabsMenuButton.tooltip=Show all tabs
+
+# LOCALIZATION NOTE (inspector.showThreePaneMode): This is the tooltip for the button
+# that toggles on the 3 pane inspector mode.
+inspector.showThreePaneMode=Toggle on the 3-pane inspector
+
+# LOCALIZATION NOTE (inspector.hideThreePaneMode): This is the tooltip for the button
+# that toggles off the 3 pane inspector mode.
+inspector.hideThreePaneMode=Toggle off the 3-pane inspector
+
+# LOCALIZATION NOTE (inspector.searchResultsCount2): This is the label that
+# will show up next to the inspector search box. %1$S is the current result
+# index and %2$S is the total number of search results. For example: "3 of 9".
+# This won't be visible until the search box is updated in Bug 835896.
+inspector.searchResultsCount2=%1$S of %2$S
+
+# LOCALIZATION NOTE (inspector.searchResultsNone): This is the label that
+# will show up next to the inspector search box when no matches were found
+# for the given string.
+# This won't be visible until the search box is updated in Bug 835896.
+inspector.searchResultsNone=No matches
+
+# LOCALIZATION NOTE (inspector.menu.openUrlInNewTab.label): This is the label of
+# a menu item in the inspector contextual-menu that appears when the user right-
+# clicks on the attribute of a node in the inspector that is a URL, and that
+# allows to open that URL in a new tab.
+inspector.menu.openUrlInNewTab.label=Open Link in New Tab
+
+# LOCALIZATION NOTE (inspector.menu.copyUrlToClipboard.label): This is the label
+# of a menu item in the inspector contextual-menu that appears when the user
+# right-clicks on the attribute of a node in the inspector that is a URL, and
+# that allows to copy that URL in the clipboard.
+inspector.menu.copyUrlToClipboard.label=Copy Link Address
+
+# LOCALIZATION NOTE (inspector.menu.selectElement.label): This is the label of a
+# menu item in the inspector contextual-menu that appears when the user right-
+# clicks on the attribute of a node in the inspector that is the ID of another
+# element in the DOM (like with <label for="input-id">), and that allows to
+# select that element in the inspector.
+inspector.menu.selectElement.label=Select Element #%S
+
+# LOCALIZATION NOTE (inspectorEditAttribute.label): This is the label of a
+# sub-menu "Attribute" in the inspector contextual-menu that appears
+# when the user right-clicks on the node in the inspector, and that allows
+# to edit an attribute on this node.
+inspectorEditAttribute.label=Edit Attribute “%S”
+inspectorEditAttribute.accesskey=E
+
+# LOCALIZATION NOTE (inspectorRemoveAttribute.label): This is the label of a
+# sub-menu "Attribute" in the inspector contextual-menu that appears
+# when the user right-clicks on the attribute of a node in the inspector,
+# and that allows to remove this attribute.
+inspectorRemoveAttribute.label=Remove Attribute “%S”
+inspectorRemoveAttribute.accesskey=R
+
+# LOCALIZATION NOTE (inspectorCopyAttributeValue.label): This is the label of a
+# sub-menu "Attribute" in the inspector contextual-menu that appears
+# when the user right-clicks on the attribute of a node in the inspector,
+# and that allows to copy the attribute value to clipboard.
+inspectorCopyAttributeValue.label=Copy Attribute Value “%S”
+inspectorCopyAttributeValue.accesskey=V
+
+# LOCALIZATION NOTE (inspector.nodePreview.highlightNodeLabel):
+# This string is displayed in a tooltip that is shown when hovering over a the
+# inspector icon displayed next to a DOM node preview (e.g. next to something
+# like "div#foo.bar").
+# DOM node previews can be displayed in places like the animation-inspector, the
+# console or the object inspector.
+# The tooltip invites the user to click on the icon in order to highlight the
+# node in the page.
+inspector.nodePreview.highlightNodeLabel=Click to highlight this node in the page
+
+# LOCALIZATION NOTE (inspectorHTMLEdit.label): This is the label shown
+# in the inspector contextual-menu for the item that lets users edit the
+# (outer) HTML of the current node
+inspectorXMLEdit.label=Edit As XML
+inspectorHTMLEdit.label=Edit As HTML
+inspectorSVGEdit.label=Edit As SVG
+inspectorMathMLEdit.label=Edit As MathML
+inspectorHTMLEdit.accesskey=E
+
+# LOCALIZATION NOTE (inspectorCopyInnerHTML.label): This is the label shown
+# in the inspector contextual-menu for the item that lets users copy the
+# inner HTML of the current node
+inspectorCopyInnerHTML.label=Inner HTML
+inspectorCopyInnerHTML.accesskey=I
+
+# LOCALIZATION NOTE (inspectorCopyOuterHTML.label): This is the label shown
+# in the inspector contextual-menu for the item that lets users copy the
+# outer HTML of the current node
+inspectorCopyOuterHTML.label=Outer HTML
+inspectorCopyOuterHTML.accesskey=O
+
+# LOCALIZATION NOTE (inspectorCopyCSSSelector.label): This is the label
+# shown in the inspector contextual-menu for the item that lets users copy
+# the CSS Selector of the current node
+inspectorCopyCSSSelector.label=CSS Selector
+inspectorCopyCSSSelector.accesskey=S
+
+# LOCALIZATION NOTE (inspectorCopyCSSPath.label): This is the label
+# shown in the inspector contextual-menu for the item that lets users copy
+# the full CSS path of the current node
+inspectorCopyCSSPath.label=CSS Path
+inspectorCopyCSSPath.accesskey=P
+
+# LOCALIZATION NOTE (inspectorCopyXPath.label): This is the label
+# shown in the inspector contextual-menu for the item that lets users copy
+# the XPath of the current node
+inspectorCopyXPath.label=XPath
+inspectorCopyXPath.accesskey=X
+
+# LOCALIZATION NOTE (inspectorPasteOuterHTML.label): This is the label shown
+# in the inspector contextual-menu for the item that lets users paste outer
+# HTML in the current node
+inspectorPasteOuterHTML.label=Outer HTML
+inspectorPasteOuterHTML.accesskey=O
+
+# LOCALIZATION NOTE (inspectorPasteInnerHTML.label): This is the label shown
+# in the inspector contextual-menu for the item that lets users paste inner
+# HTML in the current node
+inspectorPasteInnerHTML.label=Inner HTML
+inspectorPasteInnerHTML.accesskey=I
+
+# LOCALIZATION NOTE (inspectorHTMLPasteBefore.label): This is the label shown
+# in the inspector contextual-menu for the item that lets users paste
+# the HTML before the current node
+inspectorHTMLPasteBefore.label=Before
+inspectorHTMLPasteBefore.accesskey=B
+
+# LOCALIZATION NOTE (inspectorHTMLPasteAfter.label): This is the label shown
+# in the inspector contextual-menu for the item that lets users paste
+# the HTML after the current node
+inspectorHTMLPasteAfter.label=After
+inspectorHTMLPasteAfter.accesskey=A
+
+# LOCALIZATION NOTE (inspectorHTMLPasteFirstChild.label): This is the label
+# shown in the inspector contextual-menu for the item that lets users paste
+# the HTML as the first child the current node
+inspectorHTMLPasteFirstChild.label=As First Child
+inspectorHTMLPasteFirstChild.accesskey=F
+
+# LOCALIZATION NOTE (inspectorHTMLPasteLastChild.label): This is the label
+# shown in the inspector contextual-menu for the item that lets users paste
+# the HTML as the last child the current node
+inspectorHTMLPasteLastChild.label=As Last Child
+inspectorHTMLPasteLastChild.accesskey=L
+
+# LOCALIZATION NOTE (inspectorScrollNodeIntoView.label): This is the label
+# shown in the inspector contextual-menu for the item that lets users scroll
+# the current node into view
+inspectorScrollNodeIntoView.label=Scroll Into View
+inspectorScrollNodeIntoView.accesskey=S
+
+# LOCALIZATION NOTE (inspectorHTMLDelete.label): This is the label shown in
+# the inspector contextual-menu for the item that lets users delete the
+# current node
+inspectorHTMLDelete.label=Delete Node
+inspectorHTMLDelete.accesskey=D
+
+# LOCALIZATION NOTE (inspectorAttributesSubmenu.label): This is the label
+# shown in the inspector contextual-menu for the sub-menu of the other
+# attribute items, which allow to:
+# - add new attribute
+# - edit attribute
+# - remove attribute
+inspectorAttributesSubmenu.label=Attributes
+inspectorAttributesSubmenu.accesskey=A
+
+# LOCALIZATION NOTE (inspectorAddAttribute.label): This is the label shown in
+# the inspector contextual-menu for the item that lets users add attribute
+# to current node
+inspectorAddAttribute.label=Add Attribute
+inspectorAddAttribute.accesskey=A
+
+# LOCALIZATION NOTE (inspectorPseudoClassSubmenu.label): This is the label
+# shown in the inspector contextual-menu for the sub-menu of the pseudo-classes.
+inspectorPseudoClassSubmenu.label=Change Pseudo-class
+
+# LOCALIZATION NOTE (inspectorBreakpointSubmenu.label): This is the label
+# shown in the inspector contextual-menu for the sub-menu of the DOM breakpoints.
+inspectorBreakpointSubmenu.label=Break on…
+
+# LOCALIZATION NOTE (inspectorSubtreeModification.label): This is the label shown
+# in the inspector contextual-menu for the item that lets users add a DOM breakpoint
+# for subtree modification.
+inspectorSubtreeModification.label=Subtree Modification
+
+# LOCALIZATION NOTE (inspectorAttributeModification.label): This is the label shown
+# in the inspector contextual-menu for the item that lets users add a DOM breakpoint
+# for attribute modification.
+inspectorAttributeModification.label=Attribute Modification
+
+# LOCALIZATION NOTE (inspectorNodeRemoval.label): This is the label shown
+# in the inspector contextual-menu for the item that lets users add a DOM breakpoint
+# for node removal.
+inspectorNodeRemoval.label=Node Removal
+
+# LOCALIZATION NOTE (inspectorSearchHTML.label3): This is the label that is
+# shown as the placeholder for the markup view search in the inspector.
+inspectorSearchHTML.label3=Search HTML
+
+# LOCALIZATION NOTE (inspectorImageDataUri.label): This is the label
+# shown in the inspector contextual-menu for the item that lets users copy
+# the URL embedding the image data encoded in Base 64 (what we name
+# here Image Data URL). For more information:
+# https://developer.mozilla.org/en-US/docs/Web/HTTP/data_URIs
+inspectorImageDataUri.label=Image Data-URL
+
+# LOCALIZATION NOTE (inspectorShowDOMProperties.label): This is the label
+# shown in the inspector contextual-menu for the item that lets users see
+# the DOM properties of the current node. When triggered, this item
+# opens the split Console and displays the properties in its side panel.
+inspectorShowDOMProperties.label=Show DOM Properties
+
+# LOCALIZATION NOTE (inspectorShowAccessibilityProperties.label): This is the
+# label shown in the inspector contextual-menu for the item that lets users see
+# the accessibility tree and accessibility properties of the current node.
+# When triggered, this item opens accessibility panel and selects an accessible
+# object for the given node.
+inspectorShowAccessibilityProperties.label=Show Accessibility Properties
+
+# LOCALIZATION NOTE (inspectorUseInConsole.label): This is the label
+# shown in the inspector contextual-menu for the item that outputs a
+# variable for the current node to the console. When triggered,
+# this item opens the split Console.
+inspectorUseInConsole.label=Use in Console
+
+# LOCALIZATION NOTE (inspectorExpandNode.label): This is the label
+# shown in the inspector contextual-menu for recursively expanding
+# mark-up elements
+inspectorExpandNode.label=Expand All
+
+# LOCALIZATION NOTE (inspectorCollapseAll.label): This is the label
+# shown in the inspector contextual-menu for recursively collapsing
+# mark-up elements
+inspectorCollapseAll.label=Collapse All
+
+# LOCALIZATION NOTE (inspectorScreenshotNode.label): This is the label
+# shown in the inspector contextual-menu for the item that lets users take
+# a screenshot of the currently selected node.
+inspectorScreenshotNode.label=Screenshot Node
+
+# LOCALIZATION NOTE (inspectorDuplicateNode.label): This is the label
+# shown in the inspector contextual-menu for the item that lets users
+# duplicate the currently selected node.
+inspectorDuplicateNode.label=Duplicate Node
+
+# LOCALIZATION NOTE (inspectorAddNode.label): This is the label shown in
+# the inspector toolbar for the button that lets users add elements to the
+# DOM (as children of the currently selected element).
+inspectorAddNode.label=Create New Node
+inspectorAddNode.accesskey=C
+
+# LOCALIZATION NOTE (inspectorCopyHTMLSubmenu.label): This is the label
+# shown in the inspector contextual-menu for the sub-menu of the other
+# copy items, which allow to:
+# - Copy Inner HTML
+# - Copy Outer HTML
+# - Copy Unique selector
+# - Copy Image data URI
+inspectorCopyHTMLSubmenu.label=Copy
+
+# LOCALIZATION NOTE (inspectorPasteHTMLSubmenu.label): This is the label
+# shown in the inspector contextual-menu for the sub-menu of the other
+# paste items, which allow to:
+# - Paste Inner HTML
+# - Paste Outer HTML
+# - Before
+# - After
+# - As First Child
+# - As Last Child
+inspectorPasteHTMLSubmenu.label=Paste
+
+# LOCALIZATION NOTE (inspectorCustomElementDefinition.label): This is the label
+# shown in the inspector contextual-menu for custom elements to which a shadow root has
+# been attached. Clicking on the menu item will open the Debugger on the custom element
+# definition location.
+inspectorCustomElementDefinition.label=Show Custom Element
+
+# LOCALIZATION NOTE (inspector.searchHTML.key):
+# Key shortcut used to focus the DOM element search box on top-right corner of
+# the markup view
+inspector.searchHTML.key=CmdOrCtrl+F
+
+# LOCALIZATION NOTE (markupView.hide.key):
+# Key shortcut used to hide the selected node in the markup view.
+markupView.hide.key=h
+
+# LOCALIZATION NOTE (markupView.edit.key):
+# Key shortcut used to hide the selected node in the markup view.
+markupView.edit.key=F2
+
+# LOCALIZATION NOTE (markupView.scrollInto.key):
+# Key shortcut used to scroll the webpage in order to ensure the selected node
+# is visible
+markupView.scrollInto.key=s
+
+# LOCALIZATION NOTE (inspector.sidebar.fontInspectorTitle):
+# This is the title shown in a tab in the side panel of the Inspector panel
+# that corresponds to the tool displaying the list of fonts used in the page.
+inspector.sidebar.fontInspectorTitle=Fonts
+
+# LOCALIZATION NOTE (inspector.sidebar.changesViewTitle):
+# Title of the Changes sidebar tab shown in the Inspector panel. The Changes panel shows
+# style changes made using DevTools.
+inspector.sidebar.changesViewTitle=Changes
+
+# LOCALIZATION NOTE (inspector.sidebar.ruleViewTitle):
+# This is the title shown in a tab in the side panel of the Inspector panel
+# that corresponds to the tool displaying the list of CSS rules used
+# in the page.
+inspector.sidebar.ruleViewTitle=Rules
+
+# LOCALIZATION NOTE (inspector.sidebar.computedViewTitle):
+# This is the title shown in a tab in the side panel of the Inspector panel
+# that corresponds to the tool displaying the list of computed CSS values
+# used in the page.
+inspector.sidebar.computedViewTitle=Computed
+
+# LOCALIZATION NOTE (inspector.sidebar.layoutViewTitle2):
+# This is the title shown in a tab in the side panel of the Inspector panel
+# that corresponds to the tool displaying layout information defined in the page.
+inspector.sidebar.layoutViewTitle2=Layout
+
+# LOCALIZATION NOTE (inspector.sidebar.animationInspectorTitle):
+# This is the title shown in a tab in the side panel of the Inspector panel
+# that corresponds to the tool displaying animations defined in the page.
+inspector.sidebar.animationInspectorTitle=Animations
+
+# LOCALIZATION NOTE (inspector.sidebar.compatibilityViewTitle):
+# This is the title shown in a tab in the side panel of the Inspector panel
+# that corresponds to the tool displaying web compatibility information about the page.
+inspector.sidebar.compatibilityViewTitle=Compatibility
+
+# LOCALIZATION NOTE (inspector.eyedropper.label): A string displayed as the tooltip of
+# a button in the inspector which toggles the Eyedropper tool
+inspector.eyedropper.label=Grab a colour from the page
+
+# LOCALIZATION NOTE (inspector.breadcrumbs.label): A string visible only to a screen reader and
+# is used to label (using aria-label attribute) a container for inspector breadcrumbs
+inspector.breadcrumbs.label=Breadcrumbs
+
+# LOCALIZATION NOTE (inspector.browserStyles.label): This is the label for the checkbox
+# that specifies whether the styles that are not from the user's stylesheet should be
+# displayed or not.
+inspector.browserStyles.label=Browser Styles
+
+# LOCALIZATION NOTE (inspector.filterStyles.label): This is the label for the search box
+inspector.filterStyles.label=Filter Styles
+
+# LOCALIZATION NOTE (inspector.filterStyles.placeholder): This is the placeholder that
+# goes in the search box when no search term has been entered.
+inspector.filterStyles.placeholder=Filter Styles
+
+# LOCALIZATION NOTE (inspector.filterStylesClearButton.title): This is the title
+# for the search box clear button displayed when the input is not empty.
+inspector.filterStylesClearButton.title = Clear filter input
+
+# LOCALIZATION NOTE (inspector.addRule.tooltip): This is the tooltip shown when
+# hovering the `Add new rule` button in the rules view toolbar. This should
+# match ruleView.contextmenu.addNewRule in styleinspector.properties
+inspector.addRule.tooltip=Add new rule
+
+# LOCALIZATION NOTE (inspector.togglePseudo.tooltip): This is the tooltip
+# shown when hovering over the `Toggle Pseudo Class Panel` button in the
+# rule view toolbar.
+inspector.togglePseudo.tooltip=Toggle pseudo-classes
+
+# LOCALIZATION NOTE (inspector.classPanel.toggleClass.tooltip): This is the tooltip
+# shown when hovering over the `Toggle Class Panel` button in the
+# rule view toolbar.
+inspector.classPanel.toggleClass.tooltip=Toggle classes
+
+# LOCALIZATION NOTE (inspector.classPanel.newClass.placeholder): This is the placeholder
+# shown inside the text field used to add a new class in the rule-view.
+inspector.classPanel.newClass.placeholder=Add new class
+
+# LOCALIZATION NOTE (inspector.classPanel.noClasses): This is the text displayed in the
+# class panel when the current element has no classes applied.
+inspector.classPanel.noClasses=No classes on this element
+
+# LOCALIZATION NOTE (inspector.noProperties): In the case where there are no CSS
+# properties to display e.g. due to search criteria this message is
+# displayed.
+inspector.noProperties=No CSS properties found.
+
+# LOCALIZATION NOTE (inspector.printSimulation.tooltip):
+# This is the tooltip of the print simulation button in the Rule View toolbar
+# that toggles print simulation.
+inspector.printSimulation.tooltip = Toggle print media simulation for the page
+
+# LOCALIZATION NOTE (inspector.colorSchemeSimulationLight.tooltip):
+# This is the tooltip of the light color scheme simulation button in the Rule View
+# toolbar that toggles light color scheme simulation.
+inspector.colorSchemeSimulationLight.tooltip=Toggle light colour scheme simulation for the page
+
+# LOCALIZATION NOTE (inspector.colorSchemeSimulationDark.tooltip):
+# This is the tooltip of the dark color scheme simulation button in the Rule View
+# toolbar that toggles dark color scheme simulation.
+inspector.colorSchemeSimulationDark.tooltip=Toggle dark colour scheme simulation for the page
+
+# LOCALIZATION NOTE (markupView.scrollableBadge.label): This is the text displayed inside a
+# badge, in the inspector, next to nodes that are scrollable in the page.
+markupView.scrollableBadge.label=scroll
+
+# LOCALIZATION NOTE (markupView.scrollableBadge.tooltip): This is the tooltip that is displayed
+# when hovering over badges next to scrollable elements in the inspector.
+markupView.scrollableBadge.tooltip=This element has scrollable overflow.
+
+# LOCALIZATION NOTE (markupView.scrollableBadge.interactive.tooltip): This is the tooltip that is displayed
+# when hovering over interactive badges next to scrollable elements in the inspector.
+markupView.scrollableBadge.interactive.tooltip=This element has scrollable overflow. Click to reveal elements that are causing the overflow.
+
+# LOCALIZATION NOTE (markupView.overflowBadge.label): This is the text displayed inside a
+# badge, in the inspector, next to nodes that are causing overflow in other elements.
+markupView.overflowBadge.label=overflow
+
+# LOCALIZATION NOTE (markupView.overflowBadge.tooltip): This is the tooltip that is displayed
+# when hovering over badges next to overflow causing elements in the inspector.
+markupView.overflowBadge.tooltip=This element is causing an element to overflow.
+
+# LOCALIZATION NOTE (rulePreviewTooltip.noAssociatedRule): This is the text displayed inside
+# the RulePreviewTooltip when a rule cannot be found for a CSS property declaration.
+rulePreviewTooltip.noAssociatedRule=No associated rule
+
+# LOCALIZATION NOTE (colorPickerTooltip.contrastAgainstBgTitle): A title text for the
+# contrast ratio value description that labels the background the color contrast ratio is calculated
+# against, used together with the actual background color. %S in the content will be replaced by a
+# span (containing bg color swatch) and textNode (containing bg color hex string) at run time
+colorPickerTooltip.contrastAgainstBgTitle=Calculated against background: %S
+
+# LOCALIZATION NOTE (colorPickerTooltip.spectrumDraggerTitle): A title text for the
+# spectrum dragger panel in the color picker tooltip.
+colorPickerTooltip.spectrumDraggerTitle=Spectrum
+
+# LOCALIZATION NOTE (colorPickerTooltip.eyedropperTitle): A title text for the
+# eyedropper in the color picker tooltip.
+colorPickerTooltip.eyedropperTitle=Pick colour on page
+
+# LOCALIZATION NOTE (colorPickerTooltip.colorNameTitle): A title text for the
+# closest color name shown in the color picker tooltip, used together with the actual color.
+# %S in the content will be replaced by the color name the current color is closest to.
+colorPickerTooltip.colorNameTitle=Closest to: %S
+
+# LOCALIZATION NOTE (colorPickerTooltip.hueSliderTitle): A title text for the
+# hue slider in the color picker tooltip.
+colorPickerTooltip.hueSliderTitle=Hue
+
+# LOCALIZATION NOTE (colorPickerTooltip.alphaSliderTitle): A title text for the
+# alpha slider in the color picker tooltip.
+colorPickerTooltip.alphaSliderTitle=Opacity
+
+# LOCALIZATION NOTE (colorPickerTooltip.contrast.large.title): A title text for the color
+# contrast ratio description in the color picker tooltip, used together with the specification
+# that the color contrast criteria used is for large text. %S in the content will be replaced by a
+# large text indicator span at run time.
+colorPickerTooltip.contrast.large.title=Contrast %S:
diff --git a/l10n-en-GB/devtools/client/jsonview.properties b/l10n-en-GB/devtools/client/jsonview.properties
new file mode 100644
index 0000000000..fe243b08c9
--- /dev/null
+++ b/l10n-en-GB/devtools/client/jsonview.properties
@@ -0,0 +1,47 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# LOCALIZATION NOTE These strings are used in the JSON View tool
+# that is used to inspect application/json document types loaded
+# in the browser.
+
+# LOCALIZATION NOTE The correct localization of this file might be to keep it
+# in English, or another language commonly spoken among web developers.
+# You want to make that choice consistent across the developer tools.
+# A good criteria is the language in which you'd find the best documentation
+# on web development on the web.
+
+# LOCALIZATION NOTE (jsonViewer.tab.JSON, jsonViewer.tab.RawData,
+# jsonViewer.tab.Headers): Label for a panel tab.
+jsonViewer.tab.JSON=JSON
+jsonViewer.tab.RawData=Raw Data
+jsonViewer.tab.Headers=Headers
+
+# LOCALIZATION NOTE (jsonViewer.responseHeaders, jsonViewer.requestHeaders):
+# Label for header groups within the 'Headers' panel.
+jsonViewer.responseHeaders=Response Headers
+jsonViewer.requestHeaders=Request Headers
+
+# LOCALIZATION NOTE (jsonViewer.Save): Label for save command
+jsonViewer.Save=Save
+
+# LOCALIZATION NOTE (jsonViewer.Copy): Label for clipboard copy command
+jsonViewer.Copy=Copy
+
+# LOCALIZATION NOTE (jsonViewer.ExpandAll): Label for expanding all nodes
+jsonViewer.ExpandAll=Expand All
+
+jsonViewer.ExpandAllSlow=Expand All (slow)
+
+# LOCALIZATION NOTE (jsonViewer.CollapseAll): Label for collapsing all nodes
+jsonViewer.CollapseAll=Collapse All
+
+# LOCALIZATION NOTE (jsonViewer.PrettyPrint): Label for JSON
+# pretty print action button.
+jsonViewer.PrettyPrint=Pretty Print
+
+# LOCALIZATION NOTE (jsonViewer.filterJSON): Label used in search box
+# at the top right cornder of the JSON Viewer.
+jsonViewer.filterJSON=Filter JSON
+
diff --git a/l10n-en-GB/devtools/client/layout.properties b/l10n-en-GB/devtools/client/layout.properties
new file mode 100644
index 0000000000..132d50ab20
--- /dev/null
+++ b/l10n-en-GB/devtools/client/layout.properties
@@ -0,0 +1,138 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# LOCALIZATION NOTE This file contains the Layout Inspector strings.
+# The Layout Inspector is a panel accessible in the Inspector sidebar.
+
+# LOCALIZATION NOTE (flexbox.header): The accordion header for the Flexbox panel when
+# no flex container or item is selected.
+flexbox.header=Flexbox
+
+# LOCALIZATION NOTE (flexbox.backButtonLabel): The spoken label for the button
+# that returns from the display of a flex item to the flex item list.
+# This label is spoken by screen readers, not displayed on screen.
+flexbox.backButtonLabel=Back to Flex Container
+
+# LOCALIZATION (flexbox.flexContainer): The accordion header for the Flexbox panel
+# when a flex container is selected.
+flexbox.flexContainer=Flex Container
+
+# LOCALIZATION NOTE) (flexbox.flexItemOf): The accordion header for the Flexbox panel
+# when a flex item is selected. %s represents the flex container selector.
+flexbox.flexItemOf=Flex Item of %S
+
+# LOCALIZATION NOTE (flexbox.noFlexboxeOnThisPage): In the case where there are no CSS
+# flex containers to display.
+flexbox.noFlexboxeOnThisPage=Select a Flex container or item to continue.
+
+# LOCALIZATION NOTE (flexbox.flexItems): Header label displayed for the flex item list.
+flexbox.flexItems=Flex Items
+
+# LOCALIZATION NOTE (flexbox.noFlexItems): Label shown in the flex items list section if
+# there are no flex items for the flex container to display.
+flexbox.noFlexItems=No flex items
+
+# LOCALIZATION NOTE (flexbox.itemSizing.baseSizeSectionHeader): Header label displayed
+# at the start of the flex item sizing Base Size section.
+flexbox.itemSizing.baseSizeSectionHeader=Base Size
+
+# LOCALIZATION NOTE (flexbox.itemSizing.flexibilitySectionHeader): Header label displayed
+# at the start of the flex item sizing Flexibility section.
+flexbox.itemSizing.flexibilitySectionHeader=Flexibility
+
+# LOCALIZATION NOTE (flexbox.itemSizing.minSizeSectionHeader): Header label displayed
+# at the start of the flex item sizing Minimum Size section.
+flexbox.itemSizing.minSizeSectionHeader=Minimum Size
+
+# LOCALIZATION NOTE (flexbox.itemSizing.maxSizeSectionHeader): Header label displayed at
+# the start of the flex item sizing Maximum Size section.
+flexbox.itemSizing.maxSizeSectionHeader=Maximum Size
+
+# LOCALIZATION NOTE (flexbox.itemSizing.finalSizeSectionHeader): Header label displayed at
+# the start of the flex item sizing Final Size section.
+flexbox.itemSizing.finalSizeSectionHeader=Final Size
+
+# LOCALIZATION NOTE (flexbox.itemSizing.itemContentSize): Label shown in the flex item
+# sizing panel. It tells users that a given item’s base size was calculated from its
+# content size when unconstrained.
+flexbox.itemSizing.itemContentSize=Content Size
+
+# LOCALIZATION NOTE (flexbox.itemSizing.clampedToMax): Label shown in the flexbox item
+# sizing panel. It tells users that a given item attempted to grow but ended up being
+# clamped to a smaller max size.
+# (Note that clamp is a common word in flexbox terminology. It refers to constraining an
+# item's size to some defined min/max-width/height set on the element, even though there
+# might have been room for it to grow, or reason for it to shrink more).
+flexbox.itemSizing.clampedToMax=The item was clamped to its maximum size.
+
+# LOCALIZATION NOTE (flexbox.itemSizing.clampedToMin): Label shown in the flexbox item
+# sizing panel. It tells users that a given item attempted to grow but ended up being
+# clamped to a larger min size.
+# (Note that clamp is a common word in flexbox terminology. It refers to constraining an
+# item's size to some defined min/max-width/height set on the element, even though there
+# might have been room for it to grow, or reason for it to shrink more).
+flexbox.itemSizing.clampedToMin=The item was clamped to its minimum size.
+
+# LOCALIZATION NOTE (flexbox.itemSizing.setToGrow): Label shown in the flex item sizing
+# panel. It tells users that a given item was set to grow.
+flexbox.itemSizing.setToGrow=Item was set to grow.
+
+# LOCALIZATION NOTE (flexbox.itemSizing.setToShrink): Label shown in the flexbox item
+# sizing panel. It tells users that a given item was set to shrink.
+flexbox.itemSizing.setToShrink=Item was set to shrink.
+
+# LOCALIZATION NOTE (flexbox.itemSizing.notSetToGrow): Label shown in the
+# flexbox item sizing panel. It tells users that a given item was not set to grow, even
+# though there might have been space on the flex line for it to grow.
+flexbox.itemSizing.notSetToGrow=Item was not set to grow.
+
+# LOCALIZATION NOTE (flexbox.itemSizing.notSetToShrink): Label shown in the
+# flexbox item sizing panel. It tells users that a given item did not shrink even though
+# there might not have been enough space on the flex line for all items to fit.
+flexbox.itemSizing.notSetToShrink=Item was not set to shrink.
+
+# LOCALIZATION NOTE (flexbox.togglesFlexboxHighlighter2): The tooltip text for the Flexbox
+# toggle button.
+flexbox.togglesFlexboxHighlighter2=Toggle Flexbox Highlighter
+
+# LOCALIZATION NOTE (layout.overlayCheckbox.label): Label used for checkboxes in the grid
+# sections of the layout panel that control the display of the grid highlighter.
+layout.toggleGridHighlighter=Toggle Grid Highlighter
+
+# LOCALIZATION NOTE (layout.cannotShowGridOutline, layout.cannotSHowGridOutline.title):
+# In the case where the grid outline cannot be effectively displayed.
+layout.cannotShowGridOutline=Cannot show outline for this grid
+layout.cannotShowGridOutline.title=The selected grid’s outline cannot effectively fit inside the layout panel for it to be usable.
+
+# LOCALIZATION NOTE (layout.displayAreaNames): Label of the display area names setting
+# option in the CSS Grid panel.
+layout.displayAreaNames=Display area names
+
+# LOCALIZATION NOTE (layout.displayLineNumbers): Label of the display line numbers
+# setting option in the CSS Grid panel.
+layout.displayLineNumbers=Display line numbers
+
+# LOCALIZATION NOTE (layout.extendLinesInfinitely): Label of the extend lines
+# infinitely setting option in the CSS Grid panel.
+layout.extendLinesInfinitely=Extend lines infinitely
+
+# LOCALIZATION NOTE (layout.header): The accordion header for the CSS Grid panel.
+layout.header=Grid
+
+# LOCALIZATION NOTE (layout.gridDisplaySettings): The header for the grid display
+# settings container in the CSS Grid panel.
+layout.gridDisplaySettings=Grid Display Settings
+
+# LOCALIZATION NOTE (layout.noGridsOnThisPage): In the case where there are no CSS grid
+# containers to display.
+layout.noGridsOnThisPage=CSS Grid is not in use on this page
+
+# LOCALIZATION NOTE (layout.overlayGrid): Alternate header for the list of grid container
+# elements if only one item can be selected.
+layout.overlayGrid=Overlay Grid
+
+# LOCALIZATION NOTE (layout.colorSwatch.tooltip): Text displayed in a tooltip
+# when the mouse is over a color swatch in the layout panel (for flexbox/grid highlighter color).
+# %s represents the current selected color in hex format (e.g. #FF0000).
+layout.colorSwatch.tooltip=Colour Swatch: %S. Click to open the colour picker
diff --git a/l10n-en-GB/devtools/client/memory.properties b/l10n-en-GB/devtools/client/memory.properties
new file mode 100644
index 0000000000..409c2a6cbb
--- /dev/null
+++ b/l10n-en-GB/devtools/client/memory.properties
@@ -0,0 +1,434 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# LOCALIZATION NOTE These strings are used inside the Memory Tools
+# which is available from the Web Developer sub-menu -> 'Memory'.
+# The correct localization of this file might be to keep it in
+# English, or another language commonly spoken among web developers.
+# You want to make that choice consistent across the developer tools.
+# A good criteria is the language in which you'd find the best
+# documentation on web development on the web.
+
+# LOCALIZATION NOTE These strings are used inside the Memory Tools
+# which is available from the Browser Tools sub-menu -> 'Memory'.
+# The correct localization of this file might be to keep it in
+# English, or another language commonly spoken among web developers.
+# You want to make that choice consistent across the developer tools.
+# A good criteria is the language in which you'd find the best
+# documentation on web development on the web.
+
+# LOCALIZATION NOTE (snapshot.io.save): The label for the link that saves a
+# snapshot to disk.
+snapshot.io.save=Save
+
+# LOCALIZATION NOTE (snapshot.io.delete): The label for the link that deletes
+# a snapshot
+snapshot.io.delete=Delete
+
+# LOCALIZATION NOTE (snapshot.io.save.window): The title for the window
+# displayed when saving a snapshot to disk.
+snapshot.io.save.window=Save Snapshot
+
+# LOCALIZATION NOTE (snapshot.io.import.window): The title for the window
+# displayed when importing a snapshot form disk.
+snapshot.io.import.window=Import Snapshot
+
+# LOCALIZATION NOTE (snapshot.io.filter): The title for the filter used to
+# filter file types (*.fxsnapshot)
+snapshot.io.filter=Firefox Snapshots
+
+# LOCALIZATION NOTE (aggregate.mb): The label annotating the number of bytes (in
+# megabytes) in a snapshot. %S represents the value, rounded to 2 decimal
+# points.
+aggregate.mb=%S MB
+
+# LOCALIZATION NOTE (snapshot-title.loading): The title for a snapshot before
+# it has a creation time to display.
+snapshot-title.loading=Processing…
+
+# LOCALIZATION NOTE (checkbox.recordAllocationStacks): The label describing the
+# boolean checkbox whether or not to record call stacks.
+checkbox.recordAllocationStacks=Record call stacks
+
+# LOCALIZATION NOTE (checkbox.recordAllocationStacks.tooltip): The tooltip for
+# the label describing the boolean checkbox whether or not to record call
+# stacks.
+checkbox.recordAllocationStacks.tooltip=Toggle the recording of the call stack of when an object was allocated. Subsequent snapshots will be able to group and label objects by call stacks, but only with those objects created after toggling this option. Recording call stacks has a performance overhead.
+
+# LOCALIZATION NOTE (toolbar.displayBy): The label describing the select menu
+# options of the display options.
+toolbar.displayBy=Group by:
+
+# LOCALIZATION NOTE (toolbar.displayBy.tooltip): The tooltip for the label
+# describing the select menu options of the display options.
+toolbar.displayBy.tooltip=Change how objects are grouped
+
+# LOCALIZATION NOTE (toolbar.pop-view): The text in the button to go back to the
+# previous view.
+toolbar.pop-view=←
+
+# LOCALIZATION NOTE (toolbar.pop-view.label): The text for the label for the
+# button to go back to the previous view.
+toolbar.pop-view.label=Go back to aggregates
+
+# LOCALIZATION NOTE (toolbar.viewing-individuals): The text letting the user
+# know that they are viewing individual nodes from a census group.
+toolbar.viewing-individuals=⁂ Viewing individuals in group
+
+# LOCALIZATION NOTE (censusDisplays.coarseType.tooltip): The tooltip for the
+# "coarse type" display option.
+censusDisplays.coarseType.tooltip=Group items by their type
+
+# LOCALIZATION NOTE (censusDisplays.allocationStack.tooltip): The tooltip for
+# the "call stack" display option.
+censusDisplays.allocationStack.tooltip=Group items by the JavaScript stack recorded when the object was allocated
+
+# LOCALIZATION NOTE (censusDisplays.invertedAllocationStack.tooltip): The
+# tooltip for the "inverted call stack" display option.
+censusDisplays.invertedAllocationStack.tooltip=Group items by the inverted JavaScript call stack recorded when the object was created
+
+# LOCALIZATION NOTE (toolbar.labelBy): The label describing the select menu
+# options of the label options.
+toolbar.labelBy=Label by:
+
+# LOCALIZATION NOTE (toolbar.labelBy): The tooltip for the label describing the
+# select menu options of the label options.
+toolbar.labelBy.tooltip=Change how objects are labelled
+
+# LOCALIZATION NOTE (dominatorTreeDisplays.coarseType.tooltip): The tooltip for
+# the "coarse type" dominator tree display option.
+dominatorTreeDisplays.coarseType.tooltip=Label objects by the broad categories they fit in
+
+# LOCALIZATION NOTE (dominatorTreeDisplays.allocationStack.tooltip): The
+# tooltip for the "call stack" dominator tree display option.
+dominatorTreeDisplays.allocationStack.tooltip=Label objects by the JavaScript stack recorded when it was allocated
+
+# LOCALIZATION NOTE (treeMapDisplays.coarseType.tooltip): The tooltip for
+# the "coarse type" tree map display option.
+treeMapDisplays.coarseType.tooltip=Label objects by the broad categories they fit in
+
+# LOCALIZATION NOTE (toolbar.view): The label for the view selector in the
+# toolbar.
+toolbar.view=View:
+
+# LOCALIZATION NOTE (toolbar.view.tooltip): The tooltip for the label for the
+# view selector in the toolbar.
+toolbar.view.tooltip=Change the view of the snapshot
+
+# LOCALIZATION NOTE (toolbar.view.census): The label for the census view option
+# in the toolbar.
+toolbar.view.census=Aggregate
+
+# LOCALIZATION NOTE (toolbar.view.census.tooltip): The tooltip for the label for
+# the census view option in the toolbar.
+toolbar.view.census.tooltip=View a summary of the snapshot’s contents by aggregating objects into groups
+
+# LOCALIZATION NOTE (toolbar.view.dominators): The label for the dominators view
+# option in the toolbar.
+toolbar.view.dominators=Dominators
+
+# LOCALIZATION NOTE (toolbar.view.dominators.tooltip): The tooltip for the label
+# for the dominators view option in the toolbar.
+toolbar.view.dominators.tooltip=View the dominator tree and surface the largest structures in the snapshot
+
+# LOCALIZATION NOTE (toolbar.view.treemap): The label for the tree map option
+# in the toolbar.
+toolbar.view.treemap=Tree Map
+
+# LOCALIZATION NOTE (toolbar.view.treemap.tooltip): The tooltip for the label for
+# the tree map view option in the toolbar.
+toolbar.view.treemap.tooltip=Visualise memory usage: larger blocks account for a larger percent of memory usage
+
+# LOCALIZATION NOTE (take-snapshot): The label describing the button that
+# initiates taking a snapshot, either as the main label, or a tooltip.
+take-snapshot=Take snapshot
+
+# LOCALIZATION NOTE (import-snapshot): The label describing the button that
+# initiates importing a snapshot.
+import-snapshot=Import…
+
+# LOCALIZATION NOTE (clear-snapshots.tooltip): The tooltip for the button that
+# deletes existing snapshot.
+clear-snapshots.tooltip=Delete all snapshots
+
+# LOCALIZATION NOTE (diff-snapshots.tooltip): The tooltip for the button that
+# initiates selecting two snapshots to diff with each other.
+diff-snapshots.tooltip=Compare snapshots
+
+# LOCALIZATION NOTE (filter.placeholder): The placeholder text used for the
+# memory tool's filter search box.
+filter.placeholder=Filter
+
+# LOCALIZATION NOTE (filter.tooltip): The tooltip text used for the memory
+# tool's filter search box.
+filter.tooltip=Filter the contents of the snapshot
+
+# LOCALIZATION NOTE (tree-item.view-individuals.tooltip): The tooltip for the
+# button to view individuals in this group.
+tree-item.view-individuals.tooltip=View individual nodes in this group and their retaining paths
+
+# LOCALIZATION NOTE (tree-item.load-more): The label for the links to fetch the
+# lazily loaded sub trees in the dominator tree view.
+tree-item.load-more=Load more…
+
+# LOCALIZATION NOTE (tree-item.rootlist): The label for the root of the
+# dominator tree.
+tree-item.rootlist=GC Roots
+
+# LOCALIZATION NOTE (tree-item.nostack): The label describing the row in the heap tree
+# that represents a row broken down by call stack when no stack was available.
+tree-item.nostack=(no stack available)
+
+# LOCALIZATION NOTE (tree-item.nofilename): The label describing the row in the
+# heap tree that represents a row broken down by filename when no filename was
+# available.
+tree-item.nofilename=(no filename available)
+
+# LOCALIZATION NOTE (tree-item.root): The label describing the row in the heap tree
+# that represents the root of the tree when inverted.
+tree-item.root=(root)
+
+# LOCALIZATION NOTE (tree-item.percent2): A percent of bytes or count displayed in the tree view.
+# there are two "%" after %S to escape and display "%"
+tree-item.percent2=%S%%
+
+# LOCALIZATION NOTE (diffing.baseline): The name of the baseline snapshot in a
+# diffing comparison.
+diffing.baseline=Baseline
+
+# LOCALIZATION NOTE (diffing.comparison): The name of the snapshot being
+# compared to the baseline in a diffing comparison.
+diffing.comparison=Comparison
+
+# LOCALIZATION NOTE (diffing.prompt.selectBaseline): The prompt to select the
+# first snapshot when doing a diffing comparison.
+diffing.prompt.selectBaseline=Select the baseline snapshot
+
+# LOCALIZATION NOTE (diffing.prompt.selectComparison): The prompt to select the
+# second snapshot when doing a diffing comparison.
+diffing.prompt.selectComparison=Select the snapshot to compare to the baseline
+
+# LOCALIZATION NOTE (diffing.state.error): The label describing the diffing
+# state ERROR, used in the snapshot list when an error occurs while diffing two
+# snapshots.
+diffing.state.error=Error
+
+# LOCALIZATION NOTE (diffing.state.error.full): The text describing the diffing
+# state ERROR, used in the main view when an error occurs while diffing two
+# snapshots.
+diffing.state.error.full=There was an error while comparing snapshots.
+
+# LOCALIZATION NOTE (diffing.state.taking-diff): The label describing the diffin
+# state TAKING_DIFF, used in the snapshots list when computing the difference
+# between two snapshots.
+diffing.state.taking-diff=Computing difference…
+
+# LOCALIZATION NOTE (diffing.state.taking-diff.full): The label describing the
+# diffing state TAKING_DIFF, used in the main view when computing the difference
+# between two snapshots.
+diffing.state.taking-diff.full=Computing difference…
+
+# LOCALIZATION NOTE (diffing.state.selecting): The label describing the diffing
+# state SELECTING.
+diffing.state.selecting=Select two snapshots to compare
+
+# LOCALIZATION NOTE (diffing.state.selecting.full): The label describing the
+# diffing state SELECTING, used in the main view when selecting snapshots to
+# diff.
+diffing.state.selecting.full=Select two snapshots to compare
+
+# LOCALIZATION NOTE (dominatorTree.state.computing): The label describing the
+# dominator tree state COMPUTING.
+dominatorTree.state.computing=Generating dominators report…
+
+# LOCALIZATION NOTE (dominatorTree.state.computing): The label describing the
+# dominator tree state COMPUTING, used in the dominator tree view.
+dominatorTree.state.computing.full=Generating dominators report…
+
+# LOCALIZATION NOTE (dominatorTree.state.fetching): The label describing the
+# dominator tree state FETCHING.
+dominatorTree.state.fetching=Computing sizes…
+
+# LOCALIZATION NOTE (dominatorTree.state.fetching): The label describing the
+# dominator tree state FETCHING, used in the dominator tree view.
+dominatorTree.state.fetching.full=Computing dominator’s retained sizes…
+
+# LOCALIZATION NOTE (dominatorTree.state.incrementalFetching): The label
+# describing the dominator tree state INCREMENTAL_FETCHING.
+dominatorTree.state.incrementalFetching=Fetching…
+
+# LOCALIZATION NOTE (dominatorTree.state.incrementalFetching): The label describing the
+# dominator tree state INCREMENTAL_FETCHING, used in the dominator tree view.
+dominatorTree.state.incrementalFetching.full=Fetching more…
+
+# LOCALIZATION NOTE (dominatorTree.state.error): The label describing the
+# dominator tree state ERROR.
+dominatorTree.state.error=Error
+
+# LOCALIZATION NOTE (dominatorTree.state.error): The label describing the
+# dominator tree state ERROR, used in the dominator tree view.
+dominatorTree.state.error.full=There was an error while processing the dominator tree
+
+# LOCALIZATION NOTE (snapshot.state.saving.full): The label describing the
+# snapshot state SAVING, used in the main heap view.
+snapshot.state.saving.full=Saving snapshot…
+
+# LOCALIZATION NOTE (snapshot.state.reading.full): The label describing the
+# snapshot state READING, and SAVED, due to these states being combined
+# visually, used in the main heap view.
+snapshot.state.reading.full=Reading snapshot…
+
+# LOCALIZATION NOTE (snapshot.state.saving-census.full): The label describing
+# the snapshot state SAVING, used in the main heap view.
+snapshot.state.saving-census.full=Generating aggregate report…
+
+# LOCALIZATION NOTE (snapshot.state.saving-tree-map.full): The label describing
+# the snapshot state SAVING, used in the main heap view.
+snapshot.state.saving-tree-map.full=Saving tree map…
+
+# LOCALIZATION NOTE (snapshot.state.error.full): The label describing the
+# snapshot state ERROR, used in the main heap view.
+snapshot.state.error.full=There was an error processing this snapshot.
+
+# LOCALIZATION NOTE (individuals.state.error): The short message displayed when
+# there is an error fetching individuals from a group.
+individuals.state.error=Error
+
+# LOCALIZATION NOTE (individuals.state.error.full): The longer message displayed
+# when there is an error fetching individuals from a group.
+individuals.state.error.full=There was an error while fetching individuals in the group
+
+# LOCALIZATION NOTE (individuals.state.fetching): The short message displayed
+# while fetching individuals.
+individuals.state.fetching=Fetching…
+
+# LOCALIZATION NOTE (individuals.state.fetching.full): The longer message
+# displayed while fetching individuals.
+individuals.state.fetching.full=Fetching individuals in group…
+
+# LOCALIZATION NOTE (individuals.field.node): The header label for an individual
+# node.
+individuals.field.node=Node
+
+# LOCALIZATION NOTE (individuals.field.node.tooltip): The tooltip for the header
+# label for an individual node.
+individuals.field.node.tooltip=The individual node in the snapshot
+
+# LOCALIZATION NOTE (snapshot.state.saving): The label describing the snapshot
+# state SAVING, used in the snapshot list view
+snapshot.state.saving=Saving snapshot…
+
+# LOCALIZATION NOTE (snapshot.state.importing): The label describing the
+# snapshot state IMPORTING, used in the snapshot list view
+snapshot.state.importing=Importing snapshot…
+
+# LOCALIZATION NOTE (snapshot.state.reading): The label describing the snapshot
+# state READING, and SAVED, due to these states being combined visually, used in
+# the snapshot list view.
+snapshot.state.reading=Reading snapshot…
+
+# LOCALIZATION NOTE (snapshot.state.saving-census): The label describing the
+# snapshot state SAVING, used in snapshot list view.
+snapshot.state.saving-census=Saving report…
+
+# LOCALIZATION NOTE (snapshot.state.saving-census): The label describing the
+# snapshot state SAVING, used in snapshot list view.
+snapshot.state.saving-tree-map=Saving tree map…
+
+# LOCALIZATION NOTE (snapshot.state.error): The label describing the snapshot
+# state ERROR, used in the snapshot list view.
+snapshot.state.error=Error
+
+# LOCALIZATION NOTE (heapview.no-difference): Message displayed when there is no
+# difference between two snapshots.
+heapview.no-difference=No difference between the baseline and comparison.
+
+# LOCALIZATION NOTE (heapview.none-match): Message displayed when there are no
+# matches when filtering.
+heapview.none-match=No matches.
+
+# LOCALIZATION NOTE (heapview.none-match): Message displayed when there report
+# is empty.
+heapview.empty=Empty.
+
+# LOCALIZATION NOTE (heapview.noAllocationStacks): The message displayed to
+# users when selecting a display by "call stack" but no call stacks
+# were recorded in the heap snapshot.
+heapview.noAllocationStacks=No call stacks found. Record call stacks before taking a snapshot.
+
+# LOCALIZATION NOTE (heapview.field.retainedSize): The name of the column in the
+# dominator tree view for retained byte sizes.
+heapview.field.retainedSize=Retained Size (Bytes)
+
+# LOCALIZATION NOTE (heapview.field.retainedSize.tooltip): The tooltip for the
+# column header in the dominator tree view for retained byte sizes.
+heapview.field.retainedSize.tooltip=The sum of the size of the object itself, and the sizes of all the other objects kept alive by it
+
+# LOCALIZATION NOTE (heapview.field.shallowSize): The name of the column in the
+# dominator tree view for shallow byte sizes.
+heapview.field.shallowSize=Shallow Size (Bytes)
+
+# LOCALIZATION NOTE (heapview.field.shallowSize.tooltip): The tooltip for the
+# column header in the dominator tree view for shallow byte sizes.
+heapview.field.shallowSize.tooltip=The size of the object itself
+
+# LOCALIZATION NOTE (dominatortree.field.label): The name of the column in the
+# dominator tree for an object's label.
+dominatortree.field.label=Dominator
+
+# LOCALIZATION NOTE (dominatortree.field.label.tooltip): The tooltip for the column
+# header in the dominator tree view for an object's label.
+dominatortree.field.label.tooltip=The label for an object in memory
+
+# LOCALIZATION NOTE (heapview.field.bytes): The name of the column in the heap
+# view for bytes.
+heapview.field.bytes=Bytes
+
+# LOCALIZATION NOTE (heapview.field.bytes.tooltip): The tooltip for the column
+# header in the heap view for bytes.
+heapview.field.bytes.tooltip=The number of bytes taken up by this group, excluding subgroups
+
+# LOCALIZATION NOTE (heapview.field.count): The name of the column in the heap
+# view for count.
+heapview.field.count=Count
+
+# LOCALIZATION NOTE (heapview.field.count.tooltip): The tooltip for the column
+# header in the heap view for count.
+heapview.field.count.tooltip=The number of reachable objects in this group, excluding subgroups
+
+# LOCALIZATION NOTE (heapview.field.totalbytes): The name of the column in the
+# heap view for total bytes.
+heapview.field.totalbytes=Total Bytes
+
+# LOCALIZATION NOTE (heapview.field.totalbytes.tooltip): The tooltip for the
+# column header in the heap view for total bytes.
+heapview.field.totalbytes.tooltip=The number of bytes taken up by this group, including subgroups
+
+# LOCALIZATION NOTE (heapview.field.totalcount): The name of the column in the
+# heap view for total count.
+heapview.field.totalcount=Total Count
+
+# LOCALIZATION NOTE (heapview.field.totalcount.tooltip): The tooltip for the
+# column header in the heap view for total count.
+heapview.field.totalcount.tooltip=The number of reachable objects in this group, including subgroups
+
+# LOCALIZATION NOTE (heapview.field.name): The name of the column in the heap
+# view for name.
+heapview.field.name=Group
+
+# LOCALIZATION NOTE (heapview.field.name.tooltip): The tooltip for the column
+# header in the heap view for name.
+heapview.field.name.tooltip=The name of this group
+
+# LOCALIZATION NOTE (shortest-paths.header): The header label for the shortest
+# paths pane.
+shortest-paths.header=Retaining Paths (from Garbage Collector Roots)
+
+# LOCALIZATION NOTE (shortest-paths.select-node): The message displayed in the
+# shortest paths pane when a node is not yet selected.
+shortest-paths.select-node=Select an item to view its retaining paths
+
+# LOCALIZATION NOTE (tree-map.node-count): The label for the count value of a
+# node in the tree map
+tree-map.node-count=count
diff --git a/l10n-en-GB/devtools/client/menus.properties b/l10n-en-GB/devtools/client/menus.properties
new file mode 100644
index 0000000000..563169971f
--- /dev/null
+++ b/l10n-en-GB/devtools/client/menus.properties
@@ -0,0 +1,29 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# LOCALIZATION NOTE (devtoolsRemoteDebugging.label): This is the label for the menu item
+# in Tools > Web Developer. Clicking on this menu item will open about:debugging which
+# acts as a hub for debugging remote devices.
+devtoolsRemoteDebugging.label = Remote Debugging
+devtoolsRemoteDebugging.accesskey = R
+
+browserConsoleCmd.label = Browser Console
+browserConsoleCmd.accesskey = B
+
+responsiveDesignMode.label = Responsive Design Mode
+responsiveDesignMode.accesskey = R
+
+eyedropper.label = Eyedropper
+eyedropper.accesskey = y
+
+# LOCALIZATION NOTE (browserToolboxMenu.label): This is the label for the
+# application menu item that opens the browser toolbox UI in the Tools menu.
+browserToolboxMenu.label = Browser Toolbox
+browserToolboxMenu.accesskey = e
+
+webDeveloperToolsMenu.label = Web Developer Tools
+webDeveloperToolsMenu.accesskey = T
+
+extensionsForDevelopersCmd.label = Extensions for Developers
+extensionsForDevelopersCmd.accesskey = f
diff --git a/l10n-en-GB/devtools/client/netmonitor.properties b/l10n-en-GB/devtools/client/netmonitor.properties
new file mode 100644
index 0000000000..0f7a985013
--- /dev/null
+++ b/l10n-en-GB/devtools/client/netmonitor.properties
@@ -0,0 +1,1699 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# LOCALIZATION NOTE These strings are used inside the Network Monitor
+# which is available from the Browser Tools sub-menu -> 'Network Monitor'.
+# The correct localization of this file might be to keep it in
+# English, or another language commonly spoken among web developers.
+# You want to make that choice consistent across the developer tools.
+# A good criteria is the language in which you'd find the best
+# documentation on web development on the web.
+
+# LOCALIZATION NOTE (netmonitor.security.state.secure)
+# This string is used as an tooltip for request that was performed over secure
+# channel i.e. the connection was encrypted.
+netmonitor.security.state.secure=The connection used to fetch this resource was secure.
+
+# LOCALIZATION NOTE (netmonitor.security.state.insecure)
+# This string is used as an tooltip for request that was performed over insecure
+# channel i.e. the connection was not https
+netmonitor.security.state.insecure=The connection used to fetch this resource was not secure.
+
+# LOCALIZATION NOTE (netmonitor.security.state.broken)
+# This string is used as an tooltip for request that failed due to security
+# issues.
+netmonitor.security.state.broken=A security error prevented the resource from being loaded.
+
+# LOCALIZATION NOTE (netmonitor.security.state.weak)
+# This string is used as an tooltip for request that had minor security issues
+netmonitor.security.state.weak=This resource was transferred over a connection that used weak encryption.
+
+# LOCALIZATION NOTE (netmonitor.security.enabled):
+# This string is used to indicate that a specific security feature is used by
+# a connection in the security details tab.
+# For example: "HTTP Strict Transport Security: Enabled"
+netmonitor.security.enabled=Enabled
+
+# LOCALIZATION NOTE (netmonitor.security.disabled):
+# This string is used to indicate that a specific security feature is not used by
+# a connection in the security details tab.
+# For example: "HTTP Strict Transport Security: Disabled"
+netmonitor.security.disabled=Disabled
+
+# LOCALIZATION NOTE (netmonitor.security.hostHeader):
+# This string is used as a header for section containing security information
+# related to the remote host. %S is replaced with the domain name of the remote
+# host. For example: Host example.com
+netmonitor.security.hostHeader=Host %S:
+
+# LOCALIZATION NOTE (netmonitor.security.notAvailable):
+# This string is used to indicate that a certain piece of information is not
+# available to be displayed. For example a certificate that has no organization
+# defined:
+#   Organization: <Not Available>
+netmonitor.security.notAvailable=<Not Available>
+
+# LOCALIZATION NOTE (collapseDetailsPane): This is the tooltip for the button
+# that collapses the network details pane in the UI.
+collapseDetailsPane=Hide request details
+
+# LOCALIZATION NOTE (collapseActionPane): This is the tooltip for the button
+# that collapses the network action pane in the UI.
+collapseActionPane=Hide network action
+
+# LOCALIZATION NOTE (allTabsMenuButton.tooltip): The tooltip that gets
+# displayed when hovering over the tabs overflow button.
+allTabsMenuButton.tooltip=Show all tabs
+
+# LOCALIZATION NOTE (headersEmptyText): This is the text displayed in the
+# headers tab of the network details pane when there are no headers available.
+headersEmptyText=No headers for this request
+
+# LOCALIZATION NOTE (headersFilterText): This is the text displayed in the
+# headers tab of the network details pane for the filtering input.
+headersFilterText=Filter Headers
+
+# LOCALIZATION NOTE (messagesEmptyText): This is the text displayed in the
+# WebSockets tab of the network details pane when there are no frames available.
+messagesEmptyText=No messages for this request
+
+# LOCALIZATION NOTE (cookiesEmptyText): This is the text displayed in the
+# cookies tab of the network details pane when there are no cookies available.
+cookiesEmptyText=No cookies for this request
+
+# LOCALIZATION NOTE (cookiesFilterText): This is the text displayed in the
+# cookies tab of the network details pane for the filtering input.
+cookiesFilterText=Filter Cookies
+
+# LOCALIZATION NOTE (responseEmptyText): This is the text displayed in the
+# response tab of the network details pane when the response is empty or not
+# available for shown.
+responseEmptyText=No response data available for this request
+
+# LOCALIZATION NOTE (paramsNoPayloadText): This is the text displayed in the
+# request tab of the network details pane when there are no params available.
+paramsNoPayloadText=No payload for this request
+
+# LOCALIZATION NOTE (paramsFilterText): This is the text displayed in the
+# request tab of the network details pane for the filtering input.
+paramsFilterText=Filter Request Parameters
+
+# LOCALIZATION NOTE (paramsQueryString): This is the label displayed
+# in the network details request tab identifying the query string.
+paramsQueryString=Query String
+
+# LOCALIZATION NOTE (paramsFormData): This is the label displayed
+# in the network details request tab identifying the form data.
+paramsFormData=Form data
+
+# LOCALIZATION NOTE (paramsPostPayload): This is the label displayed
+# in the network details request tab identifying the request payload.
+paramsPostPayload=Request payload
+
+# LOCALIZATION NOTE (netmonitor.request.raw): This is the label displayed
+# on the button in the network details request tab that toggles the
+# view of the network request between the raw data and the formatted display.
+netmonitor.request.raw=Raw
+
+# LOCALIZATION NOTE (requestHeaders): This is the label displayed
+# in the network details headers tab identifying the request headers.
+requestHeaders=Request Headers
+
+# LOCALIZATION NOTE (requestHeadersFromUpload): This is the label displayed
+# in the network details headers tab identifying the request headers from
+# the upload stream of a POST request's body.
+requestHeadersFromUpload=Request headers from upload stream
+
+# LOCALIZATION NOTE (responseHeaders): This is the label displayed
+# in the network details headers tab identifying the response headers.
+responseHeaders=Response Headers
+
+# LOCALIZATION NOTE (requestCookies): This is the label displayed
+# in the network details request tab identifying the request cookies.
+requestCookies=Request Cookies
+
+# LOCALIZATION NOTE (responseCookies): This is the label displayed
+# in the network details request tab identifying the response cookies.
+responseCookies=Response Cookies
+
+# LOCALIZATION NOTE (responsePayload): This is the label displayed
+# in the network details response tab identifying the response payload.
+responsePayload=Response Payload
+
+# LOCALIZATION NOTE (netmonitor.response.raw): This is the label displayed
+# on the button in the network details response tab that toggles the
+# view of the network response between the raw data and the formatted display.
+netmonitor.response.raw=Raw
+
+# LOCALIZATION NOTE (netmonitor.response.html): This is the text displayed
+# in the response tab of the network details pane for an HTML preview.
+netmonitor.response.html=HTML
+
+# LOCALIZATION NOTE (jsonFilterText): This is the text displayed
+# in the response tab of the network details pane for the JSON filtering input.
+jsonFilterText=Filter properties
+
+# LOCALIZATION NOTE (jsonScopeName): This is the text displayed
+# in the response tab of the network details pane for a JSON scope.
+jsonScopeName=JSON
+
+# LOCALIZATION NOTE (jsonpScopeName): This is the text displayed
+# in the response tab of the network details pane for a JSONP scope.
+jsonpScopeName=JSONP → callback %S()
+
+# LOCALIZATION NOTE (jsonXssiStripped): This is the text displayed
+# in a notification in the response tab of the network details pane
+# when a JSON payload had XSSI escape characters which were removed
+jsonXssiStripped=The string “%S” was removed from the beginning of the JSON shown below
+
+# LOCALIZATION NOTE (responseTruncated): This is the text displayed
+# in the response tab of the network details pane when the response is over
+# the truncation limit and thus was truncated.
+responseTruncated=Response has been truncated
+
+# LOCALIZATION NOTE (requestTruncated): This is the text displayed
+# in the request tab of the network details pane when the request is over
+# the truncation limit and thus was truncated.
+requestTruncated=Request has been truncated
+
+# LOCALIZATION NOTE (networkMenu.raced): This is the label displayed
+# in the network menu specifying the transfer or a request is
+# raced. %S refers to the current transfer size.
+networkMenu.raced=%S (raced)
+
+# LOCALIZATION NOTE (networkMenu.sortedAsc): This is the tooltip displayed
+# in the network table toolbar, for any column that is sorted ascending.
+networkMenu.sortedAsc=Sorted ascending
+
+# LOCALIZATION NOTE (networkMenu.sortedDesc): This is the tooltip displayed
+# in the network table toolbar, for any column that is sorted descending.
+networkMenu.sortedDesc=Sorted descending
+
+# LOCALIZATION NOTE (networkMenu.summary.tooltip.perf): A tooltip explaining
+# what the perf button does
+networkMenu.summary.tooltip.perf=Start performance analysis
+
+# LOCALIZATION NOTE (networkMenu.summary.tooltip.domContentLoaded): A tooltip explaining
+# what the DOMContentLoaded label displays
+networkMenu.summary.tooltip.domContentLoaded=Time when “DOMContentLoad” event occurred
+
+# LOCALIZATION NOTE (networkMenu.summary.tooltip.load): A tooltip explaining
+# what the load label displays
+networkMenu.summary.tooltip.load=Time when “load” event occurred
+
+# LOCALIZATION NOTE (networkMenu.summary.requestsCount2): This label is displayed
+# in the network table footer providing the number of requests
+# See: http://developer.mozilla.org/en/docs/Localization_and_Plurals
+networkMenu.summary.requestsCount2=One request;#1 requests
+
+# LOCALIZATION NOTE (networkMenu.summary.requestsCountEmpty): This label is displayed
+# in the network table footer when there are no requests
+networkMenu.summary.requestsCountEmpty=No requests
+
+# LOCALIZATION NOTE (networkMenu.summary.tooltip.requestsCount): A tooltip explaining
+# what the requestsCount label displays
+networkMenu.summary.tooltip.requestsCount=Number of requests
+
+# LOCALIZATION NOTE (networkMenu.summary.transferred): This label is displayed
+# in the network table footer providing the transferred size.
+networkMenu.summary.transferred=%S / %S transferred
+
+# LOCALIZATION NOTE (networkMenu.summary.tooltip.transferred): A tooltip explaining
+# what the transferred label displays
+networkMenu.summary.tooltip.transferred=Size/transferred size of all requests
+
+# LOCALIZATION NOTE (networkMenu.summary.finish): This label is displayed
+# in the network table footer providing the transfer time.
+networkMenu.summary.finish=Finish: %S
+
+# LOCALIZATION NOTE (networkMenu.summary.tooltip.finish): A tooltip explaining
+# what the finish label displays
+networkMenu.summary.tooltip.finish=Total time needed to load all requests
+
+# LOCALIZATION NOTE (networkMenu.ws.summary.framesCount2): This label is displayed
+# in the messages table footer providing the number of frames
+# See: http://developer.mozilla.org/en/docs/Localization_and_Plurals
+networkMenu.ws.summary.framesCount2=One message;#1 messages
+
+# LOCALIZATION NOTE (networkMenu.ws.summary.framesCountEmpty): This label is displayed
+# in the messages table footer when there are no frames
+networkMenu.ws.summary.framesCountEmpty=No messages
+
+# LOCALIZATION NOTE (networkMenu.ws.summary.tooltip.framesCount): A tooltip explaining
+# what the framesCount label displays
+networkMenu.ws.summary.tooltip.framesCount=Number of messages
+
+# LOCALIZATION NOTE (networkMenu.ws.summary.tooltip.framesTotalSize): A tooltip explaining
+# what the framesTotalSize label displays
+networkMenu.ws.summary.tooltip.framesTotalSize=Total size of displayed messages
+
+# LOCALIZATION NOTE (networkMenu.ws.summary.label.framesTranferredSize): A label showing
+# summary size info related to the current list of WS messages
+# %1$S is the total size of the transferred data, %2$S is the size of sent data, %3$S is the size of received data.
+networkMenu.ws.summary.label.framesTranferredSize=%1$S total, %2$S sent, %3$S received
+
+# LOCALIZATION NOTE (networkMenu.ws.summary.tooltip.framesTotalTime): A tooltip explaining
+# what framesTotalTime displays
+networkMenu.ws.summary.tooltip.framesTotalTime=Total elapsed time between the first and last displayed messages
+
+# LOCALIZATION NOTE (networkMenu.sizeB): This is the label displayed
+# in the network menu specifying the size of a request (in bytes).
+networkMenu.sizeB=%S B
+
+# LOCALIZATION NOTE (networkMenu.size.kB): This is the label displayed
+# in the network menu specifying the size of a request (in kilobytes).
+networkMenu.size.kB=%S kB
+
+# LOCALIZATION NOTE (networkMenu.sizeMB): This is the label displayed
+# in the network menu specifying the size of a request (in megabytes).
+networkMenu.sizeMB=%S MB
+
+# LOCALIZATION NOTE (networkMenu.sizeGB): This is the label displayed
+# in the network menu specifying the size of a request (in gigabytes).
+networkMenu.sizeGB=%S GB
+
+# LOCALIZATION NOTE (networkMenu.sizeUnavailable): This is the label displayed
+# in the network menu specifying the transferred size of a request is
+# unavailable.
+networkMenu.sizeUnavailable=—
+
+# LOCALIZATION NOTE (networkMenu.sizeUnavailable.title): This is the tooltip
+# displayed in the network menu specifying that the transferred size of a
+# request is unavailable.
+networkMenu.sizeUnavailable.title=Transferred size is not available
+
+# LOCALIZATION NOTE (networkMenu.sizeCached): This is the label displayed
+# in the network menu and the headers panel specifying the transfer or a request is
+# cached.
+networkMenu.sizeCached=cached
+
+# LOCALIZATION NOTE (networkMenu.sizeServiceWorker): This is the label displayed
+# in the network menu and the headers panel specifying the transferred of a request
+# computed by a service worker.
+networkMenu.sizeServiceWorker=service worker
+
+# LOCALIZATION NOTE (networkMenu.blocked2): This is a generic message for a
+# URL that has been blocked for an unknown reason
+networkMenu.blocked2=Blocked
+
+# LOCALIZATION NOTE (networkMenu.blockedby): This is a generic message for a
+# URL that has been blocked by an extension
+# %S is the extension name.
+networkMenu.blockedby=Blocked By %S
+
+# LOCALIZATION NOTE (networkMenu.blockedTooltip): This is a the text displayed
+# as a tooltip for the blocked icon in the request list
+networkMenu.blockedTooltip=Blocked
+
+# LOCALIZATION NOTE (networkMenu.totalMS2): This is the label displayed
+# in the network menu specifying the time for a request to finish (in milliseconds).
+networkMenu.totalMS2=%S ms
+
+# This string is used to concatenate tooltips (netmonitor.waterfall.tooltip.*)
+# in the requests waterfall for total time (in milliseconds). \\u0020 represents
+# a whitespace. You can replace this with a different character, e.g. an hyphen
+# or a period, if a comma doesn't work for your language.
+netmonitor.waterfall.tooltip.separator=,\u0020
+
+# LOCALIZATION NOTE (netmonitor.waterfall.tooltip.total): This is part of the tooltip
+# displayed in the requests waterfall for total time (in milliseconds).
+netmonitor.waterfall.tooltip.total=Total %S ms
+
+# LOCALIZATION NOTE (netmonitor.waterfall.tooltip.blocked): This is part of the tooltip
+# displayed in the requests waterfall for blocked time (in milliseconds).
+netmonitor.waterfall.tooltip.blocked=Blocked %S ms
+
+# LOCALIZATION NOTE (netmonitor.waterfall.tooltip.dns): This is part of the tooltip
+# displayed in the requests waterfall for dns time (in milliseconds).
+netmonitor.waterfall.tooltip.dns=DNS %S ms
+
+# LOCALIZATION NOTE (netmonitor.waterfall.tooltip.ssl): This is part of the tooltip
+# displayed in the requests waterfall for tls setup time (in milliseconds).
+netmonitor.waterfall.tooltip.ssl=TLS %S ms
+
+# LOCALIZATION NOTE (netmonitor.waterfall.tooltip.connect): This is part of the tooltip
+# displayed in the requests waterfall for connect time (in milliseconds).
+netmonitor.waterfall.tooltip.connect=Connect %S ms
+
+# LOCALIZATION NOTE (netmonitor.waterfall.tooltip.send): This is part of the tooltip
+# displayed in the requests waterfall for send time (in milliseconds).
+netmonitor.waterfall.tooltip.send=Send %S ms
+
+# LOCALIZATION NOTE (netmonitor.waterfall.tooltip.wait): This is part of the tooltip
+# displayed in the requests waterfall for wait time (in milliseconds).
+netmonitor.waterfall.tooltip.wait=Wait %S ms
+
+# LOCALIZATION NOTE (netmonitor.waterfall.tooltip.receive): This is part of the tooltip
+# displayed in the requests waterfall for receive time (in milliseiconds).
+netmonitor.waterfall.tooltip.receive=Receive %S ms
+
+# LOCALIZATION NOTE (netmonitor.timings.requestTiming): This is the title of the existing
+# section in Timings side panel. This section contains request timings.
+netmonitor.timings.requestTiming=Request Timing
+
+# LOCALIZATION NOTE (netmonitor.timings.serverTiming): This is the title of a new section
+# in Timings side panel. This section contains server timings transferred from the server
+# through the "Server-Timing" header.
+netmonitor.timings.serverTiming=Server Timing
+
+# LOCALIZATION NOTE (netmonitor.timings.serviceWorkerTiming): This is the title of a new section
+# in Timings side panel. This section contains service worker timings transferred from the
+# service worker.
+netmonitor.timings.serviceWorkerTiming=Service Worker Timing
+
+# LOCALIZATION NOTE (netmonitor.timings.queuedAt): This is relative queued time to the
+# first request. %S is time expressed in milliseconds or minutes.
+netmonitor.timings.queuedAt=Queued: %S
+
+# LOCALIZATION NOTE (netmonitor.timings.startedAt): Relative to the first request,
+# when the request actually started. %S is time expressed in milliseconds or minutes.
+netmonitor.timings.startedAt=Started: %S
+
+# LOCALIZATION NOTE (netmonitor.timings.downloadedAt): Relative to first request,
+# when the request actually finished downloading.
+# %S is time expressed in milliseconds or minutes.
+netmonitor.timings.downloadedAt=Downloaded: %S
+
+# LOCALIZATION NOTE (netmonitor.timings.noTimings): Message that displays in the
+# timings pane when thea request has been blocked
+netmonitor.timings.noTimings=No timings for this request
+
+# LOCALIZATION NOTE (networkMenu.millisecond): This is the label displayed
+# in the network menu specifying timing interval divisions (in milliseconds).
+networkMenu.millisecond=%S ms
+
+# LOCALIZATION NOTE (networkMenu.second): This is the label displayed
+# in the network menu specifying timing interval divisions (in seconds).
+networkMenu.second=%S s
+
+# LOCALIZATION NOTE (networkMenu.minute): This is the label displayed
+# in the network menu specifying timing interval divisions (in minutes).
+networkMenu.minute=%S min
+
+# LOCALIZATION NOTE (pieChart.loading): This is the label displayed
+# for pie charts (e.g., in the performance analysis view) when there is
+# no data available yet.
+pieChart.loading=Loading
+
+# LOCALIZATION NOTE (pieChart.unavailable): This is the label displayed
+# for pie charts (e.g., in the performance analysis view) when there is
+# no data available, even after loading it.
+pieChart.unavailable=Empty
+
+# LOCALIZATION NOTE (pieChart.ariaLabel): This is the text used for the aria-label attribute
+# for SVG pie charts (e.g., in the performance analysis view).
+pieChart.ariaLabel=Pie chart representing the size of each type of request in proportion to each other
+
+# LOCALIZATION NOTE (pieChart.sliceAriaLabel): This is the text used for the aria-label attribute
+# for SVG pie charts slices (e.g., in the performance analysis view).
+# %1$S is the slice label (e.g. "html")
+# %2$S is the percentage (e.g. "33.23%").
+pieChart.sliceAriaLabel=%1$S: %2$S
+
+# LOCALIZATION NOTE (tableChart.loading): This is the label displayed
+# for table charts (e.g., in the performance analysis view) when there is
+# no data available yet.
+tableChart.loading=Please wait…
+
+# LOCALIZATION NOTE (tableChart.unavailable): This is the label displayed
+# for table charts (e.g., in the performance analysis view) when there is
+# no data available, even after loading it.
+tableChart.unavailable=No data available
+
+# LOCALIZATION NOTE (charts.size.kB): This is the label displayed
+# in pie or table charts specifying the size of a request (in kilobytes).
+charts.size.kB=%S kB
+
+# LOCALIZATION NOTE (charts.transferredSize.kB): This is the label displayed
+# in pie or table charts specifying the size of a transferred request (in kilobytes).
+charts.transferredSize.kB=%S kB
+
+# LOCALIZATION NOTE (charts.totalS): This is the label displayed
+# in pie or table charts specifying the time for a request to finish (in seconds).
+charts.totalS=%S s
+
+# LOCALIZATION NOTE (charts.totalTransferredSize.kB): This is the label displayed
+# in the performance analysis view for total transferred size, in kilobytes.
+charts.totalTransferredSize.kB=Transferred Size: %S kB
+
+# LOCALIZATION NOTE (charts.cacheEnabled): This is the label displayed
+# in the performance analysis view for "cache enabled" charts.
+charts.cacheEnabled=Primed cache
+
+# LOCALIZATION NOTE (charts.cacheDisabled): This is the label displayed
+# in the performance analysis view for "cache disabled" charts.
+charts.cacheDisabled=Empty cache
+
+# LOCALIZATION NOTE (charts.learnMore): This is the label displayed
+# in the performance analysis view, with a link to external documentation.
+charts.learnMore=Learn more about performance analysis
+
+# LOCALIZATION NOTE (charts.totalSize.kB): This is the label displayed
+# in the performance analysis view for total requests size, in kilobytes.
+charts.totalSize.kB=Size: %S kB
+
+# LOCALIZATION NOTE (charts.totalSeconds): Semi-colon list of plural forms.
+# See: http://developer.mozilla.org/en/docs/Localization_and_Plurals
+# This is the label displayed in the performance analysis view for the
+# total requests time, in seconds.
+charts.totalSeconds=Time: #1 second;Time: #1 seconds
+
+# LOCALIZATION NOTE (charts.totalSecondsNonBlocking): Semi-colon list of plural forms.
+# See: http://developer.mozilla.org/en/docs/Localization_and_Plurals
+# This is the label displayed in the performance analysis view for the
+# total requests time (non-blocking), in seconds.
+charts.totalSecondsNonBlocking=Non blocking time: #1 second;Non blocking time: #1 seconds
+
+# LOCALIZATION NOTE (charts.totalCached): This is the label displayed
+# in the performance analysis view for total cached responses.
+charts.totalCached=Cached responses: %S
+
+# LOCALIZATION NOTE (charts.totalCount): This is the label displayed
+# in the performance analysis view for total requests.
+charts.totalCount=Total requests: %S
+
+# LOCALIZATION NOTE (charts.requestsNumber): This is the label for the header column in
+# the performance analysis view for the number of requests. The label is not visible on screen,
+# but is set in the DOM for accessibility sake.
+charts.requestsNumber=Number of requests
+
+# LOCALIZATION NOTE (charts.size): This is the label displayed
+# in the header column in the performance analysis view for size of the request.
+charts.size=Size
+
+# LOCALIZATION NOTE (charts.type): This is the label displayed
+# in the header column in the performance analysis view for type of request.
+charts.type=Type
+
+# LOCALIZATION NOTE (charts.transferred): This is the label displayed
+# in the header column in the performance analysis view for transferred
+# size of the request.
+charts.transferred=Transferred
+
+# LOCALIZATION NOTE (charts.time): This is the label displayed
+# in the header column in the performance analysis view for time of request.
+charts.time=Time
+
+# LOCALIZATION NOTE (charts.nonBlockingTime): This is the label displayed
+# in the header column in the performance analysis view for non blocking
+# time of request.
+charts.nonBlockingTime=Non blocking time
+
+# LOCALIZATION NOTE (netRequest.originalFileURL.tooltip): This is the tooltip
+# displayed for the file's original URL value displayed in the file column of
+# a request.
+netRequest.originalFileURL.tooltip=Original: %S
+
+# LOCALIZATION NOTE (netRequest.decodedFileURL.tooltip): This is the tooltip
+# displayed for the file's decoded URL value displayed in the file column of
+# a request.
+netRequest.decodedFileURL.tooltip=Decoded: %S
+
+# LOCALIZATION NOTE (certmgr.subjectinfo.label):
+# A label used for a certificate section in security tab.
+# This section displays Name and organization who has been assigned the fingerprints
+certmgr.subjectinfo.label=Issued To
+
+# LOCALIZATION NOTE (certmgr.certdetail.cn):
+# A label used for Issued To and Issued By sub-section in security tab
+certmgr.certdetail.cn=Common Name (CN):
+
+# LOCALIZATION NOTE (certmgr.certdetail.o):
+# A label used for Issued To and Issued By sub-section in security tab
+certmgr.certdetail.o=Organisation (O):
+
+# LOCALIZATION NOTE (certmgr.certdetail.ou):
+# A label used for Issued To and Issued By sub-section in security tab
+certmgr.certdetail.ou=Organisational Unit (OU):
+
+# LOCALIZATION NOTE (certmgr.issuerinfo.label):
+# A label used for a certificate section in security tab
+# This section displays Name and organization who issued the fingerprints
+certmgr.issuerinfo.label=Issued By
+
+# LOCALIZATION NOTE (certmgr.periodofvalidity.label):
+# A label used for a certificate section in security tab
+# This section displays the valid period of this fingerprints
+certmgr.periodofvalidity.label=Period of Validity
+
+# LOCALIZATION NOTE (certmgr.begins):
+# A label used for Period of Validity sub-section in security tab
+certmgr.begins=Begins On:
+
+# LOCALIZATION NOTE (certmgr.expires):
+# A label used for Period of Validity sub-section in security tab
+certmgr.expires=Expires On:
+
+# LOCALIZATION NOTE (certmgr.fingerprints.label):
+# A label used for a certificate section in security tab
+# This section displays the valid period of this fingerprints
+certmgr.fingerprints.label=Fingerprints
+
+# LOCALIZATION NOTE (certmgr.certdetail.sha256fingerprint):
+# A label used for Fingerprints sub-section in security tab
+certmgr.certdetail.sha256fingerprint=SHA-256 Fingerprint:
+
+# LOCALIZATION NOTE (certmgr.certdetail.sha1fingerprint):
+# A label used for Fingerprints sub-section in security tab
+certmgr.certdetail.sha1fingerprint=SHA1 Fingerprint:
+
+# LOCALIZATION NOTE (certmgr.certificateTransparency.label):
+# This string is used as a label in the security tab.
+certmgr.certificateTransparency.label=Transparency:
+
+# LOCALIZATION NOTE (certmgr.certificateTransparency.status.ok):
+# This string is used to indicate that there are valid signed certificate
+# timestamps. This is a property for the 'Transparency'
+# field in the security tab.
+certmgr.certificateTransparency.status.ok=Valid SCT records
+
+# LOCALIZATION NOTE (certmgr.certificateTransparency.status.notEnoughSCTS):
+# This string is used to indicate that there are not enough valid signed
+# certificate timestamps. This is a property for the 'Transparency'
+# field in the security tab.
+certmgr.certificateTransparency.status.notEnoughSCTS=Not enough SCTs
+
+# LOCALIZATION NOTE (certmgr.certificateTransparency.status.notDiverseSCTS):
+# This string is used to indicate that there ar not enough diverse signed
+# certificate timestamps. This is a property for the 'Transparency'
+# field in the security tab.
+certmgr.certificateTransparency.status.notDiverseSCTS=Not diverse SCTs
+
+# LOCALIZATION NOTE (netmonitor.perfNotice1/2/3): These are the labels displayed
+# in the network table when empty to start performance analysis.
+netmonitor.perfNotice1=• Click on the
+netmonitor.perfNotice2=button to start performance analysis.
+netmonitor.perfNotice3=Analyse
+
+# LOCALIZATION NOTE (netmonitor.reload1/2/3): These are the labels displayed
+# in the network table when empty to start logging network requests.
+netmonitor.reloadNotice1=• Perform a request or
+netmonitor.reloadNotice2=Reload
+netmonitor.reloadNotice3=the page to see detailed information about network activity.
+netmonitor.emptyBrowserToolbox=Perform a request to see detailed information about network activity.
+
+# LOCALIZATION NOTE (netmonitor.toolbar.status3): This is the label displayed
+# in the network table toolbar, above the "status" column.
+netmonitor.toolbar.status3=Status
+
+# LOCALIZATION NOTE (netmonitor.toolbar.method): This is the label displayed
+# in the network table toolbar, above the "method" column.
+netmonitor.toolbar.method=Method
+
+# LOCALIZATION NOTE (netmonitor.toolbar.priority): This is the label displayed
+# in the network table toolbar, above the "priority" column.
+netmonitor.toolbar.priority=Priority
+
+# LOCALIZATION NOTE (netmonitor.toolbar.file): This is the label displayed
+# in the network table toolbar, above the "file" column.
+netmonitor.toolbar.file=File
+
+# LOCALIZATION NOTE (netmonitor.toolbar.url): This is the label displayed
+# in the network table toolbar, above the "url" column.
+netmonitor.toolbar.url=URL
+
+# LOCALIZATION NOTE (netmonitor.toolbar.protocol): This is the label displayed
+# in the network table toolbar, above the "protocol" column.
+netmonitor.toolbar.protocol=Protocol
+
+# LOCALIZATION NOTE (netmonitor.toolbar.domain): This is the label displayed
+# in the network table toolbar, above the "domain" column.
+netmonitor.toolbar.domain=Domain
+
+# LOCALIZATION NOTE (netmonitor.toolbar.remoteip): This is the label displayed
+# in the network table toolbar, above the "remoteip" column.
+netmonitor.toolbar.remoteip=Remote IP
+
+# LOCALIZATION NOTE (netmonitor.toolbar.initiator): This is the label displayed
+# in the network table toolbar, above the "initiator" column.
+netmonitor.toolbar.initiator=Initiator
+
+# LOCALIZATION NOTE (netmonitor.toolbar.type): This is the label displayed
+# in the network table toolbar, above the "type" column.
+netmonitor.toolbar.type=Type
+
+# LOCALIZATION NOTE (netmonitor.toolbar.cookies): This is the label displayed
+# in the network table toolbar, above the "cookies" column.
+netmonitor.toolbar.cookies=Cookies
+
+# LOCALIZATION NOTE (netmonitor.toolbar.setCookies): This is the label displayed
+# in the network table toolbar, above the "set cookies" column.
+# Set-Cookie is a HTTP response header. This string is the plural form of it.
+# See https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Set-Cookie
+netmonitor.toolbar.setCookies=Set-Cookies
+
+# LOCALIZATION NOTE (netmonitor.toolbar.scheme): This is the label displayed
+# in the network table toolbar, above the "scheme" column.
+netmonitor.toolbar.scheme=Scheme
+
+# LOCALIZATION NOTE (netmonitor.toolbar.startTime): This is the label displayed
+# in the network table toolbar, above the "start time" column, which is the time
+# from start of 1st request until the start of this request.
+netmonitor.toolbar.startTime=Start Time
+
+# LOCALIZATION NOTE (netmonitor.toolbar.endTime): This is the label displayed
+# in the network table toolbar, above the "end time" column, which is the time
+# from start of 1st request until the end of this response.
+netmonitor.toolbar.endTime=End Time
+
+# LOCALIZATION NOTE (netmonitor.toolbar.responseTime): This is the label displayed
+# in the network table toolbar, above the "response time" column, which is the time
+# from start of 1st request until the beginning of download of this response.
+netmonitor.toolbar.responseTime=Response Time
+
+# LOCALIZATION NOTE (netmonitor.toolbar.duration): This is the label displayed
+# in the network table toolbar, above the "duration" column, which is the time
+# from start of this request until the end of this response.
+netmonitor.toolbar.duration=Duration
+
+# LOCALIZATION NOTE (netmonitor.toolbar.latency): This is the label displayed
+# in the network table toolbar, above the "latency" column, which is the time
+# from end of this request until the beginning of download of this response.
+netmonitor.toolbar.latency=Latency
+
+# LOCALIZATION NOTE (netmonitor.toolbar.transferred): This is the label displayed
+# in the network table toolbar, above the "transferred" column and in general
+# section of the headers panel, which is the compressed / encoded size.
+netmonitor.toolbar.transferred=Transferred
+
+# LOCALIZATION NOTE (netmonitor.toolbar.contentSize): This is the label displayed
+# in the network table toolbar, above the "size" column, which is the
+# uncompressed / decoded size.
+netmonitor.toolbar.contentSize=Size
+
+# LOCALIZATION NOTE (netmonitor.toolbar.waterfall): This is the label displayed
+# in the network table toolbar, above the "waterfall" column.
+netmonitor.toolbar.waterfall=Timeline
+
+# LOCALIZATION NOTE (netmonitor.ws.toolbar.size): This is the label displayed
+# in the messages table header, above the "size" column.
+netmonitor.ws.toolbar.size=Size
+
+# LOCALIZATION NOTE (netmonitor.ws.toolbar.data): This is the label displayed
+# in the messages table header, above the "data" column.
+netmonitor.ws.toolbar.data=Data
+
+# LOCALIZATION NOTE (netmonitor.ws.toolbar.opCode): This is the label displayed
+# in the messages table header, above the "opCode" column.
+netmonitor.ws.toolbar.opCode=OpCode
+
+# LOCALIZATION NOTE (netmonitor.ws.toolbar.maskBit): This is the label displayed
+# in the messages table header, above the "maskBit" column.
+netmonitor.ws.toolbar.maskBit=MaskBit
+
+# LOCALIZATION NOTE (netmonitor.ws.toolbar.finBit): This is the label displayed
+# in the messages table header, above the "finBit" column.
+netmonitor.ws.toolbar.finBit=FinBit
+
+# LOCALIZATION NOTE (netmonitor.ws.toolbar.time): This is the label displayed
+# in the messages table header, above the "time" column.
+netmonitor.ws.toolbar.time=Time
+
+# LOCALIZATION NOTE (netmonitor.ws.toolbar.eventName): This is the label displayed
+# in the messages table header, above the "eventName" column.
+netmonitor.ws.toolbar.eventName=Event Name
+
+# LOCALIZATION NOTE (netmonitor.ws.toolbar.retry): This is the label displayed
+# in the messages table header, above the "retry" column.
+netmonitor.ws.toolbar.retry=Retry
+
+# LOCALIZATION NOTE (netmonitor.ws.toolbar.lastEventId): This is the label displayed
+# in the messages table header, above the "lastEventId" column.
+netmonitor.ws.toolbar.lastEventId=Last Event ID
+
+# LOCALIZATION NOTE (netmonitor.ws.toolbar.clear): This is the label displayed
+# in the messages panel toolbar for the "Clear" button.
+netmonitor.ws.toolbar.clear=Clear
+
+# LOCALIZATION NOTE (netmonitor.ws.toolbar.filterFreetext.label): This is the label
+# displayed in the messages panel toolbar for the frames filtering textbox.
+netmonitor.ws.toolbar.filterFreetext.label=Filter Messages
+
+# LOCALIZATION NOTE (netmonitor.ws.toolbar.filterFreetext.key): This is the
+# shortcut key to focus on the messages panel toolbar messages filtering textbox
+netmonitor.ws.toolbar.filterFreetext.key=CmdOrCtrl+E
+
+# LOCALIZATION NOTE (netmonitor.ws.toolbar.resetColumns): This is the label
+# displayed in the messages panel table header context menu.
+netmonitor.ws.toolbar.resetColumns=Reset Columns
+
+# LOCALIZATION NOTE (netmonitor.ws.context.all): This is the label displayed
+# on the context menu that shows "All" WebSocket frames.
+netmonitor.ws.context.all=All
+
+# LOCALIZATION NOTE (netmonitor.ws.context.all.accesskey): This is the access key
+# for the "All" menu item displayed in the context menu in the websocket toolbar.
+netmonitor.ws.context.all.accesskey=A
+
+# LOCALIZATION NOTE (netmonitor.ws.context.sent): This is the label displayed
+# on the context menu that shows "Sent" WebSocket frames.
+netmonitor.ws.context.sent=Sent
+
+# LOCALIZATION NOTE (netmonitor.ws.context.sent.accesskey): This is the access key
+# for the "Sent" menu item displayed in the context menu in the websocket toolbar.
+netmonitor.ws.context.sent.accesskey=S
+
+# LOCALIZATION NOTE (netmonitor.ws.context.received): This is the label displayed
+# on the context menu that shows "Received" WebSocket frames.
+netmonitor.ws.context.received=Received
+
+# LOCALIZATION NOTE (netmonitor.ws.context.received.accesskey): This is the access key
+# for the "Received" menu item displayed in the context menu in the websocket toolbar.
+netmonitor.ws.context.received.accesskey=R
+
+# LOCALIZATION NOTE (netmonitor.ws.context.controlFrames): This is the label displayed
+# on the context menu that shows "Control Frames" WebSocket frames.
+netmonitor.ws.context.controlFrames=Control
+
+# LOCALIZATION NOTE (netmonitor.ws.context.controlFrames.accesskey): This is the access key
+# for the "Control Frames" menu item displayed in the context menu in the websocket toolbar.
+netmonitor.ws.context.controlFrames.accesskey=o
+
+# LOCALIZATION NOTE (netmonitor.ws.context.copyFrame): This is the label displayed
+# on the context menu that shows "Copy Message".
+netmonitor.ws.context.copyFrame=Copy Message
+
+# LOCALIZATION NOTE (netmonitor.ws.context.copyFrame.accesskey): This is the access key
+# for the "Copy Message" menu item displayed in the context menu of a WebSocket frame.
+netmonitor.ws.context.copyFrame.accesskey=C
+
+# LOCALIZATION NOTE (netmonitor.ws.context.copyFrameAsBase64): This is the label displayed
+# on the context menu that shows "Copy as Base64" displayed in the context menu of a binary WebSocket frame.
+netmonitor.ws.context.copyFrameAsBase64=Copy as Base64
+
+# LOCALIZATION NOTE (netmonitor.ws.context.copyFrameAsBase64.accesskey): This is the access key
+# for the "Copy as Base64" menu item displayed in the context menu of a binary WebSocket frame.
+netmonitor.ws.context.copyFrameAsBase64.accesskey=B
+
+# LOCALIZATION NOTE (netmonitor.ws.context.copyFrameAsHex): This is the label displayed
+# on the context menu that shows "Copy as Hex" displayed in the context menu of a binary WebSocket frame.
+netmonitor.ws.context.copyFrameAsHex=Copy as Hex
+
+# LOCALIZATION NOTE (netmonitor.ws.context.copyFrameAsHex.accesskey): This is the access key
+# for the "Copy as Hex" menu item displayed in the context menu of a binary WebSocket frame.
+netmonitor.ws.context.copyFrameAsHex.accesskey=H
+
+# LOCALIZATION NOTE (netmonitor.ws.context.copyFrameAsText): This is the label displayed
+# on the context menu that shows "Copy as Text" displayed in the context menu of a binary WebSocket frame.
+netmonitor.ws.context.copyFrameAsText=Copy as Text
+
+# LOCALIZATION NOTE (netmonitor.ws.context.copyFrameAsText.accesskey): This is the access key
+# for the "Copy as Text" menu item displayed in the context menu of a binary WebSocket frame.
+netmonitor.ws.context.copyFrameAsText.accesskey=T
+
+# LOCALIZATION NOTE (netmonitor.ws.connection.closed): This is the text displayed in the
+# websocket messages panel when the connection is closed
+netmonitor.ws.connection.closed=Connection Closed
+
+# LOCALIZATION NOTE (netmonitor.ws.type.sent): This is the label used as
+# accessible text for the "sent" type icon in the websocket table's "data" column.
+netmonitor.ws.type.sent=Sent
+
+# LOCALIZATION NOTE (netmonitor.ws.type.received): This is the label used as
+# accessible text for the "received" type icon in the websocket table's "data" column.
+netmonitor.ws.type.received=Received
+
+# LOCALIZATION NOTE (netmonitor.ws.rawData.header): This is the label displayed
+# in the messages panel identifying the raw data.
+netmonitor.ws.rawData.header=Raw Data (%S)
+
+# LOCALIZATION NOTE (netmonitor.search.toolbar.inputPlaceholder): This is the label
+# displayed in the search toolbar for the search input as the placeholder.
+netmonitor.search.toolbar.inputPlaceholder=Find in resources…
+
+# LOCALIZATION NOTE (netmonitor.search.toolbar.close): This is the label
+# displayed in the search toolbar to close the search panel.
+netmonitor.search.toolbar.close=Close Search Panel
+
+# LOCALIZATION NOTE (netmonitor.search.toolbar.clear): This is the label
+# displayed in the search toolbar to clear the search panel.
+netmonitor.search.toolbar.clear=Clear Search Results
+
+# LOCALIZATION NOTE (netmonitor.search.toolbar.caseSensitive): This is the label
+# displayed in the search toolbar to do a case sensitive search.
+netmonitor.search.toolbar.caseSensitive=Case Sensitive
+
+# LOCALIZATION NOTE (netmonitor.search.status.labels.fetching): This is the label
+# displayed in the search results status bar when status is set to fetching.
+netmonitor.search.status.labels.fetching=Searching…
+
+# LOCALIZATION NOTE (netmonitor.search.status.labels.canceled): This is the label
+# displayed in the search results status bar when status is set to cancelled.
+netmonitor.search.status.labels.canceled=Search cancelled.
+
+# LOCALIZATION NOTE (netmonitor.search.status.labels.done): This is the label
+# displayed in the search results status bar when status is set to done.
+# %1$S is the number of matching lines in search results (netmonitor.search.status.labels.matchingLines)
+# %2$S is the number of files in which matching lines were found (netmonitor.search.status.labels.fileCount)
+netmonitor.search.status.labels.done=Search finished. %1$S %2$S.
+
+# LOCALIZATION NOTE (netmonitor.search.status.labels.matchingLines): Semi-colon list of plural forms.
+# This is the label displayed in the search results status bar showing matching lines found.
+# See: http://developer.mozilla.org/en/docs/Localization_and_Plurals
+# #1 is the number of matching lines found
+netmonitor.search.status.labels.matchingLines=Found #1 matching line;Found #1 matching lines
+
+# LOCALIZATION NOTE (netmonitor.search.status.labels.fileCount): Semi-colon list of plural forms.
+# This is the label displayed in the search results status bar showing file count
+# See: http://developer.mozilla.org/en/docs/Localization_and_Plurals
+# #1 is the number of files in which matching lines were found
+netmonitor.search.status.labels.fileCount=in #1 file;in #1 files
+
+# LOCALIZATION NOTE (netmonitor.search.status.labels.error): This is the label
+# displayed in the search results status bar when status is set to error.
+netmonitor.search.status.labels.error=Search error.
+
+# LOCALIZATION NOTE (netmonitor.toolbar.requestBlocking): This is the tooltip displayed
+# over the toolbar's Request Blocking button
+netmonitor.toolbar.requestBlocking=Request Blocking
+
+# LOCALIZATION NOTE (netmonitor.actionbar.requestBlocking2): This is the label displayed
+# in the action bar's request blocking tab
+netmonitor.actionbar.requestBlocking2=Blocking
+
+# LOCALIZATION NOTE (netmonitor.actionbar.enableBlocking): This is the label displayed
+# in request blocking tab to represent if requests blocking should be enabled
+netmonitor.actionbar.enableBlocking=Enable Request Blocking
+
+# LOCALIZATION NOTE (netmonitor.actionbar.blockSearchPlaceholder): This is the
+# placeholder text for the request addition form
+netmonitor.actionbar.blockSearchPlaceholder=Block resource when URL contains
+
+# LOCALIZATION NOTE (netmonitor.actionbar.removeBlockedUrl): This is the
+# tooltip shown over the remove button for blocked URL item
+netmonitor.actionbar.removeBlockedUrl=Remove pattern
+
+# LOCALIZATION NOTE (netmonitor.actionbar.requestBlockingUsageNotice): This is the
+# usage notice displayed when network blocking list is empty
+netmonitor.actionbar.requestBlockingUsageNotice=Add URL patterns here to block matching requests.
+
+# LOCALIZATION NOTE (netmonitor.actionbar.requestBlockingAddNotice): This is the
+# add notice that explains ways to add blocking pattern that is displayed when
+# network blocking list is empty
+netmonitor.actionbar.requestBlockingAddNotice=Start by adding a pattern or dragging a row from the network table.
+
+# LOCALIZATION NOTE (netmonitor.requestBlockingMenu.removeAllBlockedUrls): This is the
+# context menu item for removing all blocked URLs
+netmonitor.requestBlockingMenu.removeAllBlockedUrls=Remove all
+
+# LOCALIZATION NOTE (netmonitor.requestBlockingMenu.enableAllBlockedUrls): This is the
+# context menu item for enabling all blocked URLs
+netmonitor.requestBlockingMenu.enableAllBlockedUrls=Enable all
+
+# LOCALIZATION NOTE (netmonitor.requestBlockingMenu.disableAllBlockedUrls): This is the
+# context menu item for disabling all blocked URLs
+netmonitor.requestBlockingMenu.disableAllBlockedUrls=Disable all
+
+# LOCALIZATION NOTE (netmonitor.actionbar.search): This is the label displayed
+# in the action bar's search tab
+netmonitor.actionbar.search=Search
+
+# LOCALIZATION NOTE (netmonitor.actionbar.HTTPCustomRequest): This is the label displayed
+# in the action bar's edit and resend tab
+netmonitor.actionbar.HTTPCustomRequest=New Request
+
+# LOCALIZATION NOTE (messagesTruncated): This is the text displayed
+# in the messages panel when the number of messages is over the
+# truncation limit.
+# See: http://developer.mozilla.org/en/docs/Localization_and_Plurals
+netmonitor.ws.truncated-messages.warning=One message has been truncated to conserve memory;#1 messages have been truncated to conserve memory
+
+# LOCALIZATION NOTE (disableMessagesTruncation): This is the text displayed
+# in the messages panel checkbox label for toggling message truncation.
+toggleMessagesTruncation=Keep all future messages
+
+# LOCALIZATION NOTE (toggleMessagesTruncation.title): This is the title used
+# to describe the checkbox used to toggle message truncation.
+toggleMessagesTruncation.title=Keep all future messages or continue showing truncated messages
+
+# LOCALIZATION NOTE (messageDataTruncated): This is the text displayed
+# to describe to describe data truncation in the messages panel.
+messageDataTruncated=Data has been truncated
+
+# LOCALIZATION NOTE (netmonitor.tab.headers): This is the label displayed
+# in the network details pane identifying the headers tab.
+netmonitor.tab.headers=Headers
+
+# LOCALIZATION NOTE (netmonitor.tab.messages): This is the label displayed
+# in the network details pane identifying the messages tab.
+netmonitor.tab.messages=Messages
+
+# LOCALIZATION NOTE (netmonitor.tab.cookies): This is the label displayed
+# in the network details pane identifying the cookies tab.
+netmonitor.tab.cookies=Cookies
+
+# LOCALIZATION NOTE (netmonitor.tab.cache): This is the label displayed
+# in the network details pane identifying the cache tab.
+netmonitor.tab.cache=Cache
+
+# LOCALIZATION NOTE (netmonitor.tab.params): This is the label displayed
+# in the network details pane identifying the params tab.
+netmonitor.tab.params=Params
+
+# LOCALIZATION NOTE (netmonitor.tab.request): This is the label displayed
+# in the network details pane identifying the request tab.
+netmonitor.tab.request=Request
+
+# LOCALIZATION NOTE (netmonitor.tab.response): This is the label displayed
+# in the network details pane identifying the response tab.
+netmonitor.tab.response=Response
+
+# LOCALIZATION NOTE (netmonitor.tab.timings): This is the label displayed
+# in the network details pane identifying the timings tab.
+netmonitor.tab.timings=Timings
+
+# LOCALIZATION NOTE (netmonitor.tab.stackTrace): This is the label displayed
+# in the network details pane identifying the stack-trace tab.
+netmonitor.tab.stackTrace=Stack Trace
+
+# LOCALIZATION NOTE (netmonitor.tab.security): This is the label displayed
+# in the network details pane identifying the security tab.
+netmonitor.tab.security=Security
+
+# LOCALIZATION NOTE (netmonitor.toolbar.filter.all): This is the label displayed
+# in the network toolbar for the "All" filtering button.
+netmonitor.toolbar.filter.all=All
+
+# LOCALIZATION NOTE (netmonitor.toolbar.filter.html): This is the label displayed
+# in the network toolbar for the "HTML" filtering button.
+netmonitor.toolbar.filter.html=HTML
+
+# LOCALIZATION NOTE (netmonitor.toolbar.filter.css): This is the label displayed
+# in the network toolbar for the "CSS" filtering button.
+netmonitor.toolbar.filter.css=CSS
+
+# LOCALIZATION NOTE (netmonitor.toolbar.filter.js): This is the label displayed
+# in the network toolbar for the "JS" filtering button.
+netmonitor.toolbar.filter.js=JS
+
+# LOCALIZATION NOTE (netmonitor.toolbar.filter.xhr): This is the label displayed
+# in the network toolbar for the "XHR" filtering button.
+netmonitor.toolbar.filter.xhr=XHR
+
+# LOCALIZATION NOTE (netmonitor.toolbar.filter.fonts): This is the label displayed
+# in the network toolbar for the "Fonts" filtering button.
+netmonitor.toolbar.filter.fonts=Fonts
+
+# LOCALIZATION NOTE (netmonitor.toolbar.filter.images): This is the label displayed
+# in the network toolbar for the "Images" filtering button.
+netmonitor.toolbar.filter.images=Images
+
+# LOCALIZATION NOTE (netmonitor.toolbar.filter.media): This is the label displayed
+# in the network toolbar for the "Media" filtering button.
+netmonitor.toolbar.filter.media=Media
+
+# LOCALIZATION NOTE (netmonitor.toolbar.filter.flash): This is the label displayed
+# in the network toolbar for the "Flash" filtering button.
+netmonitor.toolbar.filter.flash=Flash
+
+# LOCALIZATION NOTE (netmonitor.toolbar.filter.ws): This is the label displayed
+# in the network toolbar for the "WS" filtering button.
+netmonitor.toolbar.filter.ws=WS
+
+# LOCALIZATION NOTE (netmonitor.toolbar.filter.other): This is the label displayed
+# in the network toolbar for the "Other" filtering button.
+netmonitor.toolbar.filter.other=Other
+
+# LOCALIZATION NOTE (netmonitor.toolbar.filterFreetext.label): This is the label
+# displayed in the network toolbar for the url filtering textbox.
+netmonitor.toolbar.filterFreetext.label=Filter URLs
+
+# LOCALIZATION NOTE (netmonitor.toolbar.filterFreetext.key): This is the
+# shortcut key to focus on the toolbar url filtering textbox
+netmonitor.toolbar.filterFreetext.key=CmdOrCtrl+F
+
+# LOCALIZATION NOTE (netmonitor.toolbar.search.key): This is the
+# shortcut key to toggle the search panel
+netmonitor.toolbar.search.key=CmdOrCtrl+Shift+F
+
+# LOCALIZATION NOTE (netmonitor.toolbar.copy.key): This is the
+# shortcut key to copy a selected request url from the network table
+netmonitor.toolbar.copy.key=CmdOrCtrl+C
+
+# LOCALIZATION NOTE (netmonitor.toolbar.filterFreetext.learnMore): This is
+# the title used for MDN icon in filtering textbox
+netmonitor.toolbar.filterFreetext.learnMore=Learn more about filtering
+
+# LOCALIZATION NOTE (netmonitor.toolbar.enablePersistentLogs.label): This is the label
+# displayed for the checkbox for enabling persistent logs.
+netmonitor.toolbar.enablePersistentLogs.label=Persist Logs
+
+# LOCALIZATION NOTE (netmonitor.toolbar.enablePersistentLogs.tooltip): This is the tooltip
+# displayed for the checkbox for enabling persistent logs.
+netmonitor.toolbar.enablePersistentLogs.tooltip=If you enable this option the requests list will not be cleared each time you navigate to a new page
+
+# LOCALIZATION NOTE (netmonitor.toolbar.disableCache.label): This is the label
+# displayed for the checkbox for disabling browser cache.
+netmonitor.toolbar.disableCache.label=Disable Cache
+
+# LOCALIZATION NOTE (netmonitor.toolbar.disableCache.tooltip): This is the tooltip
+# displayed for the checkbox for disabling browser cache.
+netmonitor.toolbar.disableCache.tooltip=Disable HTTP cache
+
+# LOCALIZATION NOTE (netmonitor.toolbar.clear): This is the label displayed
+# in the network toolbar for the "Clear" button.
+netmonitor.toolbar.clear=Clear
+
+# LOCALIZATION NOTE (netmonitor.toolbar.toggleRecording): This is the label displayed
+# in the network toolbar for the toggle recording button.
+netmonitor.toolbar.toggleRecording=Pause/Resume recording network log
+
+# LOCALIZATION NOTE (netmonitor.toolbar.search): This is the tooltip label displayed
+# in the network toolbar for the search  button.
+netmonitor.toolbar.search=Search
+
+# LOCALIZATION NOTE (netmonitor.toolbar.HTTPCustomRequest): This is the tooltip label displayed
+# in the network toolbar for the new HTTP Custom Request button.
+netmonitor.toolbar.HTTPCustomRequest=New Request
+
+# LOCALIZATION NOTE (netmonitor.toolbar.resetColumns): This is the label
+# displayed in the network table header context menu.
+netmonitor.toolbar.resetColumns=Reset Columns
+
+# LOCALIZATION NOTE (netmonitor.toolbar.resetSorting): This is the label
+# displayed in the network table header context menu to reset sorting
+netmonitor.toolbar.resetSorting=Reset Sorting
+
+# LOCALIZATION NOTE (netmonitor.toolbar.resizeColumnToFitContent): This is the label
+# displayed in the network table header context menu to resize a column to fit its content
+netmonitor.toolbar.resizeColumnToFitContent=Resize Column To Fit Content
+
+# LOCALIZATION NOTE (netmonitor.toolbar.resizeColumnToFitContent.title): This is the title
+# tooltip displayed when draggable resizer in network table headers is hovered
+netmonitor.toolbar.resizeColumnToFitContent.title=Double-click to fit column to content
+
+# LOCALIZATION NOTE (netmonitor.toolbar.timings): This is the label
+# displayed in the network table header context menu for the timing submenu
+netmonitor.toolbar.timings=Timings
+
+# LOCALIZATION NOTE (netmonitor.toolbar.responseHeaders): This is the
+# label displayed in the network table header context menu for the
+# response headers submenu.
+netmonitor.toolbar.responseHeaders=Response Headers
+
+# LOCALIZATION NOTE (netmonitor.headers.toolbar.block): This is the
+# label displayed in the network details headers tab identifying the
+# block url toolbar button.
+netmonitor.headers.toolbar.block=Block
+
+# LOCALIZATION NOTE (netmonitor.headers.address): This is the label displayed
+# in the network details headers tab identifying the remote address.
+netmonitor.headers.address=Address
+
+# LOCALIZATION NOTE (netmonitor.headers.proxyAddress): This is the label displayed
+# in the network details headers tab identifying the proxy address.
+netmonitor.headers.proxyAddress=Proxy Address
+
+# LOCALIZATION NOTE (netmonitor.headers.status): This is the label displayed
+# in the network details headers tab identifying the status code.
+netmonitor.headers.status=Status
+
+# LOCALIZATION NOTE (netmonitor.headers.proxyStatus): This is the label displayed
+# in the network details headers tab identifying the status code for the proxy.
+netmonitor.headers.proxyStatus=Proxy Status
+
+# LOCALIZATION NOTE (netmonitor.headers.size): This is the label displayed
+# in the network details headers tab identifying the size.
+netmonitor.headers.size=Size
+
+# LOCALIZATION NOTE (networkMenu.headers.sizeDetails): This label is displayed
+# in the network details headers tab providing the size details.
+# %1$S is the transferred size, %2$S is the size.
+netmonitor.headers.sizeDetails=%1$S (%2$S size)
+
+# LOCALIZATION NOTE (netmonitor.headers.version): This is the label displayed
+# in the network details headers tab identifying the http version.
+netmonitor.headers.version=Version
+
+# LOCALIZATION NOTE (netmonitor.headers.proxyVersion): This is the label displayed
+# in the network details headers tab identifying the http version of the proxy.
+netmonitor.headers.proxyVersion=Proxy Version
+
+# LOCALIZATION NOTE (netmonitor.summary.learnMore): This is the label displayed
+# in the network details headers tab, with a link to external documentation for
+# status codes.
+netmonitor.summary.learnMore=Learn more about status code
+
+# LOCALIZATION NOTE (netmonitor.headers.referrerPolicy): This is the label displayed
+# in the network details headers tab identifying the referrer policy.
+netmonitor.headers.referrerPolicy=Referrer Policy
+
+# LOCALIZATION NOTE (netmonitor.headers.contentBlocking): This is the label displayed
+# in the network details headers tab identifying the content blocking mode.
+netmonitor.headers.contentBlocking=Blocking
+
+# LOCALIZATION NOTE (netmonitor.headers.requestPriority): This is the label displayed
+# in the network details headers tab identifying the request priority.
+netmonitor.headers.requestPriority=Request Priority
+
+# LOCALIZATION NOTE (netmonitor.headers.dns): This is the label displayed
+# in the network details headers tab identifying the DNS resolution.
+netmonitor.headers.dns=DNS Resolution
+
+# LOCALIZATION NOTE (netmonitor.headers.dns.basic): This is the label value displayed
+# in the network details headers tab identifying the Basic DNS resolution.
+netmonitor.headers.dns.basic=System
+
+# LOCALIZATION NOTE (netmonitor.headers.dns.doh): This is the label value displayed
+# in the network details headers tab identifying the DNS over HTTPS resolution.
+netmonitor.headers.dns.overHttps=DNS over HTTPS
+
+# LOCALIZATION NOTE (netmonitor.summary.editAndResend): This is the label displayed
+# on the button in the headers tab that opens a form to edit and resend the currently
+# displayed request
+netmonitor.summary.editAndResend=Edit and Resend
+
+# LOCALIZATION NOTE (netmonitor.headers.raw): This is the label displayed
+# on the button in the headers tab that toggle view for raw request/response headers
+# from the currently displayed request
+netmonitor.headers.raw=Raw
+
+# LOCALIZATION NOTE (netmonitor.headers.blockedByCORS): This is the message displayed
+# in the notification shown when a request has been blocked by CORS with a more
+# specific reason shown in the parenthesis
+netmonitor.headers.blockedByCORS=Response body is not available to scripts (Reason: %S)
+
+#LOCALIZATION NOTE (netmonitor.headers.blockedByCORSTooltip): This is the tooltip
+# displayed on the learnmore link of the blocked by CORS notification.
+netmonitor.headers.blockedByCORSTooltip=Learn more about this CORS error
+
+# LOCALIZATION NOTE (netmonitor.response.name): This is the label displayed
+# in the network details response tab identifying an image's file name or font face's name.
+netmonitor.response.name=Name:
+
+# LOCALIZATION NOTE (netmonitor.response.dimensions): This is the label displayed
+# in the network details response tab identifying an image's dimensions.
+netmonitor.response.dimensions=Dimensions:
+
+# LOCALIZATION NOTE (netmonitor.response.mime): This is the label displayed
+# in the network details response tab identifying an image's or font's MIME type.
+netmonitor.response.mime=MIME Type:
+
+# LOCALIZATION NOTE (netmonitor.response.fontPreviewFailed): This is the notice displayed
+# in the network details response tab if the font preview could not be generated due to
+# an error.
+netmonitor.response.fontPreviewFailed=Font preview could not be generated
+
+# LOCALIZATION NOTE (netmonitor.timings.blocked): This is the label displayed
+# in the network details timings tab identifying the amount of time spent
+# in a "blocked" state.
+netmonitor.timings.blocked=Blocked:
+
+# LOCALIZATION NOTE (netmonitor.timings.dns): This is the label displayed
+# in the network details timings tab identifying the amount of time spent
+# in a "dns" state.
+netmonitor.timings.dns=DNS Resolution:
+
+# LOCALIZATION NOTE (netmonitor.timings.ssl): This is the label displayed
+# in the network details timings tab identifying the amount of time spent
+# in a "tls" handshake state.
+netmonitor.timings.ssl=TLS Setup:
+
+# LOCALIZATION NOTE (netmonitor.timings.connect): This is the label displayed
+# in the network details timings tab identifying the amount of time spent
+# in a "connect" state.
+netmonitor.timings.connect=Connecting:
+
+# LOCALIZATION NOTE (netmonitor.timings.send): This is the label displayed
+# in the network details timings tab identifying the amount of time spent
+# in a "send" state.
+netmonitor.timings.send=Sending:
+
+# LOCALIZATION NOTE (netmonitor.timings.wait): This is the label displayed
+# in the network details timings tab identifying the amount of time spent
+# in a "wait" state.
+netmonitor.timings.wait=Waiting:
+
+# LOCALIZATION NOTE (netmonitor.timings.receive): This is the label displayed
+# in the network details timings tab identifying the amount of time spent
+# in a "receive" state.
+netmonitor.timings.receive=Receiving:
+
+# LOCALIZATION NOTE (netmonitor.timings.launchServiceWorker): This is the label displayed
+# in the network details timings tab identifying the amount of time spent
+# during the launch of the service worker.
+netmonitor.timings.launchServiceWorker=Startup:
+
+# LOCALIZATION NOTE (netmonitor.timings.requestToServiceWorker): This is the label displayed
+# in the network details timings tab identifying the amount of time spent while a request is
+# made to the service worker.
+netmonitor.timings.requestToServiceWorker=Dispatch fetch:
+
+# LOCALIZATION NOTE (netmonitor.timings.handledByServiceWorker): This is the label displayed
+# in the network details timings tab identifying the amount of time spent while a request is
+# handled by the service worker.
+netmonitor.timings.handledByServiceWorker=Handle fetch:
+
+# LOCALIZATION NOTE (netmonitor.timings.learnMore): This is the label displayed
+# in the network details timings tab, with a link to external documentation
+netmonitor.timings.learnMore=Learn more about timings
+
+# LOCALIZATION NOTE (netmonitor.audits.slowIconTooltip): This is the tooltip text displayed
+# in the network request list file column, on the slow icon button.
+# %1$S is the waiting time %2$S is the slow threshold.
+netmonitor.audits.slowIconTooltip=Slow server response time (%1$S). The recommended limit is %2$S.
+
+# LOCALIZATION NOTE (netmonitor.security.warning.cipher): A tooltip
+# for warning icon that indicates a connection uses insecure cipher suite.
+netmonitor.security.warning.cipher=The cipher used for encryption is deprecated and insecure.
+
+# LOCALIZATION NOTE (netmonitor.security.error): This is the label displayed
+# in the security tab if a security error prevented the connection.
+netmonitor.security.error=An error occurred:
+
+# LOCALIZATION NOTE (netmonitor.security.protocolVersion): This is the label displayed
+# in the security tab describing TLS/SSL protocol version.
+netmonitor.security.protocolVersion=Protocol version:
+
+# LOCALIZATION NOTE (netmonitor.security.cipherSuite): This is the label displayed
+# in the security tab describing the cipher suite used to secure this connection.
+netmonitor.security.cipherSuite=Cipher suite:
+
+# LOCALIZATION NOTE (netmonitor.security.keaGroup): This is the label displayed
+# in the security tab describing the key exchange group suite used to secure
+# this connection.
+netmonitor.security.keaGroup=Key Exchange Group:
+
+# LOCALIZATION NOTE (netmonitor.security.keaGroup.none): This is the label
+# displayed in the security tab describing the case when no group was used.
+netmonitor.security.keaGroup.none=none
+
+# LOCALIZATION NOTE (netmonitor.security.keaGroup.custom): This is the label
+# displayed in the security tab describing the case when a custom group was used.
+netmonitor.security.keaGroup.custom=custom
+
+# LOCALIZATION NOTE (netmonitor.security.keaGroup.unknown): This is the value
+# displayed in the security tab describing an unknown group.
+netmonitor.security.keaGroup.unknown=unknown group
+
+# LOCALIZATION NOTE (netmonitor.security.signatureScheme): This is the label
+# displayed in the security tab describing the signature scheme used by for
+# the server certificate in this connection.
+netmonitor.security.signatureScheme=Signature Scheme:
+
+# LOCALIZATION NOTE (netmonitor.security.signatureScheme.none): This is the
+# label displayed in the security tab describing the case when no signature
+# was used.
+netmonitor.security.signatureScheme.none=none
+
+# LOCALIZATION NOTE (netmonitor.security.signatureScheme.unknown): This is the
+# value displayed in the security tab describing an unknown signature scheme.
+netmonitor.security.signatureScheme.unknown=unknown signature scheme
+
+# LOCALIZATION NOTE (netmonitor.security.hsts): This is the label displayed
+# in the security tab describing the usage of HTTP Strict Transport Security.
+netmonitor.security.hsts=HTTP Strict Transport Security:
+
+# LOCALIZATION NOTE (netmonitor.security.hpkp): This is the label displayed
+# in the security tab describing the usage of Public Key Pinning.
+netmonitor.security.hpkp=Public Key Pinning:
+
+# LOCALIZATION NOTE (netmonitor.security.connection): This is the label displayed
+# in the security tab describing the section containing information related to
+# the secure connection.
+netmonitor.security.connection=Connection:
+
+# LOCALIZATION NOTE (netmonitor.security.certificate): This is the label displayed
+# in the security tab describing the server certificate section.
+netmonitor.security.certificate=Certificate:
+
+# LOCALIZATION NOTE (netmonitor.trackingResource.tooltip): This is the label used
+# in the Network monitor panel as a tooltip for tracking resource icon.
+netmonitor.trackingResource.tooltip=This URL matches a known tracker and it would be blocked with Content Blocking enabled.
+
+# LOCALIZATION NOTE (netmonitor.trackingResource.enhancedTrackingProtection): This is
+# the label used in the Network monitor panel for showing enhanced tracking protection.
+netmonitor.trackingResource.enhancedTrackingProtection=Enhanced Tracking Protection
+
+# LOCALIZATION NOTE (netmonitor.enhancedTrackingProtection.learnMore): This is the label
+# displayed in the network details headers tab, with a link to external documentation for
+# enhanced tracking protection.
+netmonitor.enhancedTrackingProtection.learnMore=Learn more about enhanced tracking protection
+
+# LOCALIZATION NOTE (netmonitor.context.copyValue): This is the label displayed
+# for the copy sub-menu in the context menu for a request
+netmonitor.context.copyValue=Copy Value
+
+# LOCALIZATION NOTE (netmonitor.context.copyValue.accesskey): This is the access key
+# for the copy menu/sub-menu displayed in the context menu for a request
+netmonitor.context.copyValue.accesskey=C
+
+# LOCALIZATION NOTE (netmonitor.context.copyUrl): This is the label displayed
+# on the context menu that copies the selected request's url
+netmonitor.context.copyUrl=Copy URL
+
+# LOCALIZATION NOTE (netmonitor.context.copyUrl.accesskey): This is the access key
+# for the Copy URL menu item displayed in the context menu for a request
+netmonitor.context.copyUrl.accesskey=U
+
+# LOCALIZATION NOTE (netmonitor.context.copyUrlParams): This is the label displayed
+# on the context menu that copies the selected request's url parameters
+netmonitor.context.copyUrlParams=Copy URL Parameters
+
+# LOCALIZATION NOTE (netmonitor.context.copyUrlParams.accesskey): This is the access key
+# for the Copy URL Parameters menu item displayed in the context menu for a request
+netmonitor.context.copyUrlParams.accesskey=P
+
+# LOCALIZATION NOTE (netmonitor.context.copyRequestData): This is the label displayed
+# on the context menu that copies the selected request's data
+netmonitor.context.copyRequestData=Copy %S Data
+
+# LOCALIZATION NOTE (netmonitor.context.copyRequestData.accesskey): This is the access key
+# for the Copy POST/PATCH/PUT/DELETE Data menu item displayed in the context menu for a request
+netmonitor.context.copyRequestData.accesskey=D
+
+# LOCALIZATION NOTE (netmonitor.context.copyAsPowerShell): This is the label displayed
+# on the context menu that copies the selected request as a PowerShell command.
+netmonitor.context.copyAsPowerShell=Copy as PowerShell
+
+# LOCALIZATION NOTE (netmonitor.context.copyAsPowerShell.accesskey): This is the access key
+# for the Copy as PowerShell menu item displayed in the context menu for a request
+netmonitor.context.copyAsPowerShell.accesskey=S
+
+# LOCALIZATION NOTE (netmonitor.context.copyAsCurl): This is the label displayed
+# on the context menu that copies the selected request as a cURL command.
+# The capitalization is part of the official name and should be used throughout all languages.
+# http://en.wikipedia.org/wiki/CURL
+netmonitor.context.copyAsCurl=Copy as cURL
+
+# LOCALIZATION NOTE (netmonitor.context.copyAsCurl.accesskey): This is the access key
+# for the Copy as cURL menu item displayed in the context menu for a request
+netmonitor.context.copyAsCurl.accesskey=C
+
+# LOCALIZATION NOTE (netmonitor.context.copyAsCurl.*): This is the template used to add
+# a target platform to the label for "Copy as cURL" command
+# e.g. Copy as cURL (Windows)
+# Localized label for "Copy as cURL": %S
+netmonitor.context.copyAsCurl.win=%S (Windows)
+netmonitor.context.copyAsCurl.win.accesskey=C
+netmonitor.context.copyAsCurl.posix=%S (POSIX)
+netmonitor.context.copyAsCurl.posix.accesskey=P
+
+# LOCALIZATION NOTE (netmonitor.context.copyAsFetch): This is the label displayed
+# on the context menu that copies the selected request as a fetch request.
+netmonitor.context.copyAsFetch=Copy as Fetch
+
+# LOCALIZATION NOTE (netmonitor.context.copyAsFetch.accesskey): This is the access key
+# for the Copy as fetch menu item displayed in the context menu for a request
+netmonitor.context.copyAsFetch.accesskey=F
+
+# LOCALIZATION NOTE (netmonitor.context.copyRequestHeaders): This is the label displayed
+# on the context menu that copies the selected item's request headers
+netmonitor.context.copyRequestHeaders=Copy Request Headers
+
+# LOCALIZATION NOTE (netmonitor.context.copyRequestHeaders.accesskey): This is the access key
+# for the Copy Request Headers menu item displayed in the context menu for a request
+netmonitor.context.copyRequestHeaders.accesskey=q
+
+# LOCALIZATION NOTE (netmonitor.context.copyResponseHeaders): This is the label displayed
+# on the context menu that copies the selected item's response headers
+netmonitor.context.copyResponseHeaders=Copy Response Headers
+
+# LOCALIZATION NOTE (netmonitor.context.copyResponseHeaders.accesskey): This is the access key
+# for the Copy Response Headers menu item displayed in the context menu for a response
+netmonitor.context.copyResponseHeaders.accesskey=s
+
+# LOCALIZATION NOTE (netmonitor.context.copyResponse): This is the label displayed
+# on the context menu that copies the selected response as a string
+netmonitor.context.copyResponse=Copy Response
+
+# LOCALIZATION NOTE (netmonitor.context.copyResponse.accesskey): This is the access key
+# for the Copy Response menu item displayed in the context menu for a request
+netmonitor.context.copyResponse.accesskey=R
+
+# LOCALIZATION NOTE (netmonitor.context.copyImageAsDataUri): This is the label displayed
+# on the context menu that copies the selected image as data uri
+netmonitor.context.copyImageAsDataUri=Copy Image as Data URI
+
+# LOCALIZATION NOTE (netmonitor.context.copyImageAsDataUri.accesskey): This is the access key
+# for the Copy Image As Data URI menu item displayed in the context menu for a request
+netmonitor.context.copyImageAsDataUri.accesskey=I
+
+# LOCALIZATION NOTE (netmonitor.context.useAsFetch): This is the label displayed
+# on the context menu that copies the selected request as a fetch command.
+netmonitor.context.useAsFetch=Use as Fetch in Console
+
+# LOCALIZATION NOTE (netmonitor.context.useAsFetch.accesskey): This is the access key
+# for the Copy as fetch menu item displayed in the context menu for a request
+netmonitor.context.useAsFetch.accesskey=F
+
+# LOCALIZATION NOTE (netmonitor.context.saveImageAs): This is the label displayed
+# on the context menu that save the Image
+netmonitor.context.saveImageAs=Save Image As
+
+# LOCALIZATION NOTE (netmonitor.context.saveImageAs.accesskey): This is the access key
+# for the Copy Image As Data URI menu item displayed in the context menu for a request
+netmonitor.context.saveImageAs.accesskey=v
+
+# LOCALIZATION NOTE (netmonitor.context.copyAll): This is the label displayed
+# on the context menu that copies all data
+netmonitor.context.copyAll=Copy All
+
+# LOCALIZATION NOTE (netmonitor.context.copyAll.accesskey): This is the access key
+# for the Copy All menu item displayed in the context menu for a properties view panel
+netmonitor.context.copyAll.accesskey=A
+
+# LOCALIZATION NOTE (netmonitor.context.copyAllAsHar): This is the label displayed
+# on the context menu that copies all as HAR format
+netmonitor.context.copyAllAsHar=Copy All As HAR
+
+# LOCALIZATION NOTE (netmonitor.context.copyAllAsHar.accesskey): This is the access key
+# for the Copy All As HAR menu item displayed in the context menu for a network panel
+netmonitor.context.copyAllAsHar.accesskey=o
+
+# LOCALIZATION NOTE (netmonitor.context.saveAllAsHar): This is the label displayed
+# on the context menu that saves all as HAR format
+netmonitor.context.saveAllAsHar=Save All As HAR
+
+# LOCALIZATION NOTE (netmonitor.context.saveAllAsHar.accesskey): This is the access key
+# for the Save All As HAR menu item displayed in the context menu for a network panel
+netmonitor.context.saveAllAsHar.accesskey=H
+
+# LOCALIZATION NOTE (netmonitor.context.importHar.accesskey): This is the access key
+# for the Import HAR menu item displayed in the context menu for a network panel
+netmonitor.context.importHar.accesskey=I
+
+# LOCALIZATION NOTE (netmonitor.har.importHarDialogTitle): This is a label
+# used for import file open dialog
+netmonitor.har.importHarDialogTitle=Import HAR File
+
+# LOCALIZATION NOTE (netmonitor.har.importDialogHARFilter):
+# This string is displayed as a filter for importing HAR file
+netmonitor.har.importDialogHARFilter=HAR Files
+
+# LOCALIZATION NOTE (netmonitor.har.importDialogAllFilter):
+# This string is displayed as a filter for importing HAR file
+netmonitor.har.importDialogAllFilter=All Files
+
+# LOCALIZATION NOTE (netmonitor.context.resend.label): This is the label displayed
+# on the context menu that resends the currently displayed request immediately
+netmonitor.context.resend.label=Resend
+
+# LOCALIZATION NOTE (netmonitor.context.resend.accesskey): This is the access key
+# for the "Resend" menu item displayed in the context menu for a request
+netmonitor.context.resend.accesskey=n
+
+# LOCALIZATION NOTE (netmonitor.context.editAndResend): This is the label displayed
+# on the context menu that opens a form to edit and resend the currently
+# displayed request
+netmonitor.context.editAndResend=Edit and Resend
+
+# LOCALIZATION NOTE (netmonitor.context.editAndResend.accesskey): This is the access key
+# for the "Edit and Resend" menu item displayed in the context menu for a request
+netmonitor.context.editAndResend.accesskey=E
+
+# LOCALIZATION NOTE (netmonitor.context.blockURL): This is the label displayed
+# on the context menu that blocks any requests matching the selected request's URL.
+netmonitor.context.blockURL=Block URL
+
+# LOCALIZATION NOTE (netmonitor.context.unblockURL): This is the label displayed
+# on the context menu that unblocks any requests matching the selected request's URL.
+netmonitor.context.unblockURL=Unblock URL
+
+# LOCALIZATION NOTE (netmonitor.context.newTab):  This is the label
+# for the Open in New Tab menu item displayed in the context menu of the
+# network container
+netmonitor.context.newTab=Open in New Tab
+
+# LOCALIZATION NOTE (netmonitor.context.newTab.accesskey): This is the access key
+# for the Open in New Tab menu item displayed in the context menu of the
+# network container
+netmonitor.context.newTab.accesskey=T
+
+# LOCALIZATION NOTE (netmonitor.context.openInDebugger):  This is the label
+# for the Open in Debugger menu item displayed in the context menu of the
+# network container
+netmonitor.context.openInDebugger=Open in Debugger
+
+# LOCALIZATION NOTE (netmonitor.context.openInDebugger.accesskey): This is the access key
+# for the Open in Debugger menu item displayed in the context menu of the
+# network container
+netmonitor.context.openInDebugger.accesskey=D
+
+# LOCALIZATION NOTE (netmonitor.context.openInStyleEditor):  This is the label
+# for the Open in Style Editor menu item displayed in the context menu of the
+# network container
+netmonitor.context.openInStyleEditor=Open in Style Editor
+
+# LOCALIZATION NOTE (netmonitor.context.openInStyleEditor.accesskey): This is
+# the access key for the Open in Style Editor menu item displayed in the
+# context menu of the network container
+netmonitor.context.openInStyleEditor.accesskey=S
+
+# LOCALIZATION NOTE (netmonitor.context.perfTools): This is the label displayed
+# on the context menu that shows the performance analysis tools
+netmonitor.context.perfTools=Start Performance Analysis…
+
+# LOCALIZATION NOTE (netmonitor.context.perfTools.accesskey): This is the access key
+# for the performance analysis menu item displayed in the context menu for a request
+netmonitor.context.perfTools.accesskey=A
+
+# LOCALIZATION NOTE (netmonitor.custom.newRequest): This is the label displayed
+# as the title of the new custom request form
+netmonitor.custom.newRequest=New Request
+
+# LOCALIZATION NOTE (netmonitor.custom.newRequestMethodLabel): This is the label displayed
+# above the method text input field of the new custom request form
+netmonitor.custom.newRequestMethodLabel=Method
+
+# LOCALIZATION NOTE (netmonitor.custom.newRequestUrlLabel): This is the label displayed
+# above the url text input field of the new custom request form
+netmonitor.custom.newRequestUrlLabel=URL
+
+# LOCALIZATION NOTE (netmonitor.custom.query): This is the label displayed
+# above the query string entry in the custom request form
+netmonitor.custom.query=Query String
+
+# LOCALIZATION NOTE (netmonitor.custom.urlParameters): This is the label displayed
+# above the query string entry in the custom request form
+netmonitor.custom.urlParameters=URL Parameters
+
+# LOCALIZATION NOTE (netmonitor.custom.headers): This is the label displayed
+# above the request headers entry in the custom request form
+netmonitor.custom.headers=Request Headers
+
+# LOCALIZATION NOTE (netmonitor.custom.newRequestHeaders): This is the label displayed
+# above the request headers entry in the new custom request form
+netmonitor.custom.newRequestHeaders=Headers
+
+# LOCALIZATION NOTE (netmonitor.custom.placeholder.name): This is the placeholder displayed
+# on the input on the headers and query params on new custom request form
+netmonitor.custom.placeholder.name=name
+
+# LOCALIZATION NOTE (netmonitor.custom.placeholder.value): This is the placeholder displayed
+# on the input on the headers and query params on new custom request form
+netmonitor.custom.placeholder.value=value
+
+# LOCALIZATION NOTE (netmonitor.custom.postBody): This is the label displayed
+# above the request body entry in the new custom request form
+netmonitor.custom.postBody=Body
+
+# LOCALIZATION NOTE (netmonitor.custom.postBody.placeholder): This is the placeholder displayed
+# on the textarea body in the new custom request form
+netmonitor.custom.postBody.placeholder=payload
+
+# LOCALIZATION NOTE (netmonitor.custom.postData): This is the label displayed
+# above the request body entry in the custom request form
+netmonitor.custom.postData=Request Body
+
+# LOCALIZATION NOTE (netmonitor.custom.send): This is the label displayed
+# on the button which sends the custom request
+netmonitor.custom.send=Send
+
+# LOCALIZATION NOTE (netmonitor.custom.cancel): This is the label displayed
+# on the button which cancels and closes the custom request form
+netmonitor.custom.cancel=Cancel
+
+# LOCALIZATION NOTE (netmonitor.custom.clear): This is the label displayed
+# on the button which clears the content of the new custom request panel
+netmonitor.custom.clear=Clear
+
+# LOCALIZATION NOTE (netmonitor.custom.removeItem): This is the
+# tooltip shown over the remove button for headers and query params item
+netmonitor.custom.removeItem=Remove item
+
+# LOCALIZATION NOTE (netmonitor.backButton): This is the label displayed
+# on the button which exists the performance statistics view
+netmonitor.backButton=Back
+
+# LOCALIZATION NOTE (netmonitor.status.tooltip.simple): This is the tooltip of the
+# column status code, when request is not being cached or is not from a service worker
+# %1$S is the status code, %2$S is the status text.
+netmonitor.status.tooltip.simple = %1$S %2$S
+
+# LOCALIZATION NOTE (netmonitor.status.tooltip.cached): This is the tooltip of
+# the column status code, when the request is cached
+# %1$S is the status code, %2$S is the status text.
+netmonitor.status.tooltip.cached = %1$S %2$S (cached)
+
+# LOCALIZATION NOTE (netmonitor.status.tooltip.worker): This is the tooltip of
+# the column status code, when the request is from a service worker
+# %1$S is the status code, %2$S is the status text.
+netmonitor.status.tooltip.worker = %1$S %2$S (service worker)
+
+# LOCALIZATION NOTE (netmonitor.status.tooltip.cachedworker): This is the tooltip
+# of the column status code, when the request is cached and is from a service worker
+# %1$S is the status code, %2$S is the status text.
+netmonitor.status.tooltip.cachedworker = %1$S %2$S (cached, service worker)
+
+# LOCALIZATION NOTE (netmonitor.label.dropHarFiles): This is a label
+# rendered within the Network panel when *.har file(s) are dragged
+# over the content.
+netmonitor.label.dropHarFiles = Drop HAR files here
+
+# LOCALIZATION NOTE (netmonitor.label.har): This is a label used
+# as a tooltip for toolbar drop-down button with HAR actions
+netmonitor.label.har=HAR Export/Import
+
+# LOCALIZATION NOTE (netmonitor.cache.cache): This is the label text for the parent
+# node in the TreeView.
+netmonitor.cache.cache=Cache
+
+# LOCALIZATION NOTE (netmonitor.cache.empty): This is the text displayed when cache
+# information is not available.
+netmonitor.cache.empty=No cache information
+
+# LOCALIZATION NOTE (netmonitor.cache.notAvailable): This is the text displayed under
+# a node that has no information available.
+netmonitor.cache.notAvailable=Not Available
+
+# LOCALIZATION NOTE (netmonitor.cache.dataSize): This is the label text for
+# the datasize of the cached object.
+netmonitor.cache.dataSize=Data Size
+
+# LOCALIZATION NOTE (netmonitor.cache.expires): This is the label text for the
+# expires time of the cached object.
+netmonitor.cache.expires=Expires
+
+# LOCALIZATION NOTE (netmonitor.cache.fetchCount): This is the label text for the
+# fetch count of the cached object.
+netmonitor.cache.fetchCount=Fetch Count
+
+# LOCALIZATION NOTE (netmonitor.cache.lastFetched): This is the label text for the
+# last fetched date/time of the cached object.
+netmonitor.cache.lastFetched=Last Fetched
+
+# LOCALIZATION NOTE (netmonitor.cache.lastModified): This is the label text for the
+# last modified date/time of the cached object.
+netmonitor.cache.lastModified=Last Modified
+
+# LOCALIZATION NOTE (netmonitor.cache.device): This is the label text for the device
+# where a cached object was fetched from (e.g. "disk").
+netmonitor.cache.device=Device
+
+# LOCALIZATION NOTE (netmonitor.settings.menuTooltip): This is the tooltip that gets displayed
+# when the settings menu button is hovered.
+netmonitor.settings.menuTooltip=Network Settings
+
+# LOCALIZATION NOTE (netmonitor.settings.importHarTooltip): This is the tooltip that gets displayed
+# when the HAR import menu item is hovered
+netmonitor.settings.importHarTooltip=Import a HAR file of network data
+
+# LOCALIZATION NOTE (netmonitor.settings.saveHarTooltip): This is the tooltip that gets displayed
+# when the HAR save menu item is hovered
+netmonitor.settings.saveHarTooltip=Save network data to HAR file
+
+# LOCALIZATION NOTE (netmonitor.settings.copyHarTooltip): This is the tooltip that gets displayed
+# when the HAR copy menu item is hovered
+netmonitor.settings.copyHarTooltip=Copy network data to the clipboard
diff --git a/l10n-en-GB/devtools/client/network-throttling.properties b/l10n-en-GB/devtools/client/network-throttling.properties
new file mode 100644
index 0000000000..b7e5933375
--- /dev/null
+++ b/l10n-en-GB/devtools/client/network-throttling.properties
@@ -0,0 +1,27 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# LOCALIZATION NOTE These strings are used inside the NetworkThrottlingMenu
+# component used to throttle network bandwidth.
+#
+# The correct localization of this file might be to keep it in
+# English, or another language commonly spoken among web developers.
+# You want to make that choice consistent across the developer tools.
+# A good criteria is the language in which you'd find the best
+# documentation on web development on the web.
+
+# LOCALIZATION NOTE (responsive.noThrottling): UI option in a menu to configure
+# network throttling.  This option is the default and disables throttling so you
+# just have normal network conditions.  There is not very much room in the UI
+# so a short string would be best if possible.
+responsive.noThrottling=No Throttling
+
+# LOCALIZATION NOTE (throttling.profile.description): Tooltip for the throttling
+# menu button, which gives details about the currently selected profile.
+# %1$S: Download speed value (number)
+# %2$S: Download speed unit (eg "Kbps", "Mbps")
+# %3$S: Upload speed value (number)
+# %4$S: Upload speed unit (eg "Kbps", "Mbps")
+# %5$S: Latency value, (number, in ms)
+throttling.profile.description = download %1$S%2$S, upload %3$S%4$S, latency %5$Sms
diff --git a/l10n-en-GB/devtools/client/perftools.ftl b/l10n-en-GB/devtools/client/perftools.ftl
new file mode 100644
index 0000000000..87b44bf17b
--- /dev/null
+++ b/l10n-en-GB/devtools/client/perftools.ftl
@@ -0,0 +1,161 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+### These strings are used in DevTools’ performance-new panel, about:profiling, and
+### the remote profiling panel. There are additional profiler strings in the appmenu.ftl
+### file that are used for the profiler popup.
+
+perftools-intro-title = Profiler Settings
+perftools-intro-description =
+    Recordings launch profiler.firefox.com in a new tab. All data is stored
+    locally, but you can choose to upload it for sharing.
+
+## All of the headings for the various sections.
+
+perftools-heading-settings = Full Settings
+perftools-heading-buffer = Buffer Settings
+perftools-heading-features = Features
+perftools-heading-features-default = Features (Recommended on by default)
+perftools-heading-features-disabled = Disabled Features
+perftools-heading-features-experimental = Experimental
+perftools-heading-threads = Threads
+perftools-heading-threads-jvm = JVM Threads
+perftools-heading-local-build = Local build
+
+##
+
+perftools-description-intro =
+    Recordings launch <a>profiler.firefox.com</a> in a new tab. All data is stored
+    locally, but you can choose to upload it for sharing.
+perftools-description-local-build =
+    If you’re profiling a build that you have compiled yourself, on this
+    machine, please add your build’s objdir to the list below so that
+    it can be used to look up symbol information.
+
+## The controls for the interval at which the profiler samples the code.
+
+perftools-range-interval-label = Sampling interval:
+perftools-range-interval-milliseconds = { NUMBER($interval, maxFractionalUnits: 2) } ms
+
+##
+
+# The size of the memory buffer used to store things in the profiler.
+perftools-range-entries-label = Buffer size:
+
+perftools-custom-threads-label = Add custom threads by name:
+
+perftools-devtools-interval-label = Interval:
+perftools-devtools-threads-label = Threads:
+perftools-devtools-settings-label = Settings
+
+## Various statuses that affect the current state of profiling, not typically displayed.
+
+perftools-status-recording-stopped-by-another-tool = The recording was stopped by another tool.
+perftools-status-restart-required = The browser must be restarted to enable this feature.
+
+## These are shown briefly when the user is waiting for the profiler to respond.
+
+perftools-request-to-stop-profiler = Stopping recording
+perftools-request-to-get-profile-and-stop-profiler = Capturing profile
+
+##
+
+perftools-button-start-recording = Start recording
+perftools-button-capture-recording = Capture recording
+perftools-button-cancel-recording = Cancel recording
+perftools-button-save-settings = Save settings and go back
+perftools-button-restart = Restart
+perftools-button-add-directory = Add a directory
+perftools-button-remove-directory = Remove selected
+perftools-button-edit-settings = Edit Settings…
+
+## These messages are descriptions of the threads that can be enabled for the profiler.
+
+perftools-thread-gecko-main =
+    .title = The main processes for both the parent process, and content processes
+perftools-thread-compositor =
+    .title = Composites together different painted elements on the page
+perftools-thread-dom-worker =
+    .title = This handles both web workers and service workers
+perftools-thread-renderer =
+    .title = When WebRender is enabled, the thread that executes OpenGL calls
+perftools-thread-render-backend =
+    .title = The WebRender RenderBackend thread
+perftools-thread-timer =
+    .title = The thread handling timers (setTimeout, setInterval, nsITimer)
+perftools-thread-style-thread =
+    .title = Style computation is split into multiple threads
+pref-thread-stream-trans =
+    .title = Network stream transport
+perftools-thread-socket-thread =
+    .title = The thread where networking code runs any blocking socket calls
+perftools-thread-img-decoder =
+    .title = Image decoding threads
+perftools-thread-dns-resolver =
+    .title = DNS resolution happens on this thread
+perftools-thread-task-controller =
+    .title = TaskController thread pool threads
+perftools-thread-jvm-gecko =
+    .title = The main Gecko JVM thread
+perftools-thread-jvm-nimbus =
+    .title = The main threads for the Nimbus experiments SDK
+perftools-thread-jvm-default-dispatcher =
+    .title = The Default dispatcher for the Kotlin coroutines library
+perftools-thread-jvm-glean =
+    .title = The main threads for the Glean telemetry SDK
+perftools-thread-jvm-arch-disk-io =
+    .title = The IO dispatcher for the Kotlin coroutines library
+perftools-thread-jvm-pool =
+    .title = Threads created in an unnamed thread pool
+
+##
+
+perftools-record-all-registered-threads = Bypass selections above and record all registered threads
+
+perftools-tools-threads-input-label =
+    .title = These thread names are a comma separated list that is used to enable profiling of the threads in the profiler. The name needs to be only a partial match of the thread name to be included. It is whitespace sensitive.
+
+## Onboarding UI labels. These labels are displayed in the new performance panel UI, when
+## devtools.performance.new-panel-onboarding preference is true.
+
+perftools-onboarding-message = <b>New</b>: { -profiler-brand-name } is now integrated into Developer Tools. <a>Learn more</a> about this powerful new tool.
+
+perftools-onboarding-close-button =
+    .aria-label = Close the onboarding message
+
+## Profiler presets
+
+
+# Presets and their l10n IDs are defined in the file
+# devtools/client/performance-new/popup/background.jsm.js
+# The same labels and descriptions are also defined in appmenu.ftl.
+
+# Presets and their l10n IDs are defined in the file
+# devtools/client/performance-new/shared/background.jsm.js
+# The same labels and descriptions are also defined in appmenu.ftl.
+
+perftools-presets-web-developer-label = Web Developer
+perftools-presets-web-developer-description = Recommended preset for most web app debugging, with low overhead.
+
+perftools-presets-firefox-label = { -brand-shorter-name }
+perftools-presets-firefox-description = Recommended preset for profiling { -brand-shorter-name }.
+
+perftools-presets-graphics-label = Graphics
+perftools-presets-graphics-description = Preset for investigating graphics bugs in { -brand-shorter-name }.
+
+perftools-presets-media-label = Media
+perftools-presets-media-description2 = Preset for investigating audio and video bugs in { -brand-shorter-name }.
+
+perftools-presets-networking-label = Networking
+perftools-presets-networking-description = Preset for investigating networking bugs in { -brand-shorter-name }.
+
+# "Power" is used in the sense of energy (electricity used by the computer).
+perftools-presets-power-label = Power
+perftools-presets-power-description = Preset for investigating power use bugs in { -brand-shorter-name }, with low overhead.
+
+perftools-presets-custom-label = Custom
+
+##
+
diff --git a/l10n-en-GB/devtools/client/responsive.properties b/l10n-en-GB/devtools/client/responsive.properties
new file mode 100644
index 0000000000..5ae29b9a5d
--- /dev/null
+++ b/l10n-en-GB/devtools/client/responsive.properties
@@ -0,0 +1,182 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# LOCALIZATION NOTE These strings are used inside the Responsive Design Mode,
+# available from the Web Developer sub-menu -> 'Responsive Design Mode'.
+#
+# The correct localization of this file might be to keep it in
+# English, or another language commonly spoken among web developers.
+# You want to make that choice consistent across the developer tools.
+# A good criteria is the language in which you'd find the best
+# documentation on web development on the web.
+
+# LOCALIZATION NOTE These strings are used inside the Responsive Design Mode,
+# available from the Browser Tools sub-menu -> 'Responsive Design Mode'.
+#
+# The correct localization of this file might be to keep it in
+# English, or another language commonly spoken among web developers.
+# You want to make that choice consistent across the developer tools.
+# A good criteria is the language in which you'd find the best
+# documentation on web development on the web.
+
+# LOCALIZATION NOTE (responsive.editDeviceList2): Context menu item displayed in the
+# device selector.
+responsive.editDeviceList2=Edit List…
+
+# LOCALIZATION NOTE (responsive.exit): Tooltip text of the exit button.
+responsive.exit=Close Responsive Design Mode
+
+# LOCALIZATION NOTE (responsive.rotate): Tooltip text of the rotate button.
+responsive.rotate=Rotate viewport
+
+# LOCALIZATION NOTE (responsive.responsiveMode): Placeholder text for the
+# device selector.
+responsive.responsiveMode=Responsive
+
+# LOCALIZATION NOTE (responsive.enableTouch): Tooltip text for the touch
+# simulation button when it's disabled.
+responsive.enableTouch=Enable touch simulation
+
+# LOCALIZATION NOTE (responsive.disableTouch): Tooltip text for the touch
+# simulation button when it's enabled.
+responsive.disableTouch=Disable touch simulation
+
+# LOCALIZATION NOTE  (responsive.screenshot): Tooltip of the screenshot button.
+responsive.screenshot=Take a screenshot of the viewport
+
+# LOCALIZATION NOTE (responsive.screenshotGeneratedFilename): The auto generated
+# filename.
+# The first argument (%1$S) is the date string in yyyy-mm-dd format and the
+# second argument (%2$S) is the time string in HH.MM.SS format.
+responsive.screenshotGeneratedFilename=Screen Shot %1$S at %2$S
+
+# LOCALIZATION NOTE (responsive.remoteOnly): Message displayed in the tab's
+# notification box if a user tries to open Responsive Design Mode in a
+# non-remote tab.
+responsive.remoteOnly=Responsive Design Mode is only available for remote browser tabs, such as those used for web content in multi-process Firefox.
+
+# LOCALIZATION NOTE (responsive.changeDevicePixelRatio): Tooltip for the
+# device pixel ratio dropdown when is enabled.
+responsive.changeDevicePixelRatio=Change device pixel ratio of the viewport
+
+# LOCALIZATION NOTE (responsive.devicePixelRatio.auto): Tooltip for the device pixel ratio
+# dropdown when it is disabled because a device is selected.
+# The argument (%1$S) is the selected device (e.g. iPhone 6) that set
+# automatically the device pixel ratio value.
+responsive.devicePixelRatio.auto=Device pixel ratio automatically set by %1$S
+
+# LOCALIZATION NOTE (responsive.customDeviceName): Default value in a form to
+# add a custom device based on an arbitrary size (no association to an existing
+# device).
+responsive.customDeviceName=Custom Device
+
+# LOCALIZATION NOTE (responsive.customDeviceNameFromBase): Default value in a
+# form to add a custom device based on the properties of another.  %1$S is the
+# name of the device we're staring from, such as "Apple iPhone 6".
+responsive.customDeviceNameFromBase=%1$S (Custom)
+
+# LOCALIZATION NOTE (responsive.addDevice2): Button text that reveals a form to
+# be used for adding custom devices.
+responsive.addDevice2=Add Custom Device…
+
+# LOCALIZATION NOTE (responsive.deviceAdderName): Label of form field for the
+# name of a new device.
+responsive.deviceAdderName=Name
+
+# LOCALIZATION NOTE (responsive.deviceAdderSize): Label of form field for the
+# size of a new device.
+responsive.deviceAdderSize=Size
+
+# LOCALIZATION NOTE (responsive.deviceAdderPixelRatio2): Label of form field for
+# the device pixel ratio of a new device.
+responsive.deviceAdderPixelRatio2=Device Pixel Ratio
+
+# LOCALIZATION NOTE (responsive.deviceAdderUserAgent2): Label of form field for
+# the user agent of a new device.
+responsive.deviceAdderUserAgent2=User Agent String
+
+# LOCALIZATION NOTE (responsive.deviceAdderTouch2): Label of form field for the
+# touch input support of a new device.
+responsive.deviceAdderTouch2=Touch Screen
+
+# LOCALIZATION NOTE (responsive.deviceAdderSave): Button text that submits a
+# form to add a new device.
+responsive.deviceAdderSave=Save
+
+# LOCALIZATION NOTE (responsive.deviceAdderCancel): Button text that cancels a
+# form to add a new device.
+responsive.deviceAdderCancel=Cancel
+
+# LOCALIZATION NOTE (responsive.deviceDetails): Tooltip that appears when
+# hovering on a device in the device modal.  %1$S is the width of the device.
+# %2$S is the height of the device.  %3$S is the device pixel ratio value of the
+# device.  %4$S is the user agent of the device.  %5$S is a boolean value
+# noting whether touch input is supported.
+responsive.deviceDetails=Size: %1$S x %2$S\nDPR: %3$S\nUA: %4$S\nTouch: %5$S
+
+# LOCALIZATION NOTE (responsive.deviceDetails.browserAndOS): Used to display the browser
+# and the OS in a tooltip that appears when hovering on a device in the device modal.
+# %1$S: browser
+# %2$S: OS
+responsive.deviceDetails.browserAndOS=%1$S on %2$S
+
+# LOCALIZATION NOTE (responsive.deviceDetails.size): Used to display the pixel
+# size in a tooltip that appears when hovering on a device in the device modal.
+# %1$S: width
+# %2$S: height
+responsive.deviceDetails.size=Size: %1$S x %2$S
+
+# LOCALIZATION NOTE (responsive.deviceDetails.DPR): Used to display the DPR in a tooltip
+# that appears when hovering on a device in the device modal.
+# %1$S: device pixel ratio
+responsive.deviceDetails.DPR=DPR: %1$S
+
+# LOCALIZATION NOTE (responsive.deviceDetails.UA): Used to display the UA in a tooltip
+# that appears when hovering on a device in the device modal.
+# %1$S: user agent
+responsive.deviceDetails.UA=UA: %1$S
+
+# LOCALIZATION NOTE (responsive.deviceDetails.touch): Used to display a boolean value
+# which is whether the touch input is supported or not in a tooltip that appears when
+# hovering on a device in the device modal.
+# %1$S: touch
+responsive.deviceDetails.touch=Touch: %1$S
+
+# LOCALIZATION NOTE (responsive.devicePixelRatioOption): UI option in a menu to configure
+# the device pixel ratio. %1$S is the devicePixelRatio value of the device.
+responsive.devicePixelRatioOption=DPR: %1$S
+
+# LOCALIZATION NOTE (responsive.reloadConditions.touchSimulation): Label on checkbox used
+# to select whether to reload when touch simulation is toggled.
+responsive.reloadConditions.touchSimulation=Reload when touch simulation is toggled
+
+# LOCALIZATION NOTE (responsive.reloadConditions.userAgent): Label on checkbox used
+# to select whether to reload when user agent is changed.
+responsive.reloadConditions.userAgent=Reload when user agent is changed
+
+# LOCALIZATION NOTE (responsive.reloadNotification.description2): Text in notification bar
+# shown on first open to clarify that some features need a reload to apply.
+responsive.reloadNotification.description2=Device simulation changes require a reload to fully apply. Automatic reloads are disabled by default to avoid losing any changes in DevTools. You can enable reloading via the Settings menu.
+
+# LOCALIZATION NOTE (responsive.leftAlignViewport): Label on checkbox used in the settings
+# menu.
+responsive.leftAlignViewport=Left-align Viewport
+
+# LOCALIZATION NOTE (responsive.customUserAgent): This is the placeholder for the user
+# agent input in the responsive design mode toolbar.
+responsive.customUserAgent=Custom User Agent
+
+responsive.showUserAgentInput=Show user agent
+
+# LOCALIZATION NOTE (responsive.deviceSettings): The header text for the device settings
+# view.
+responsive.deviceSettings=Device Settings
+
+# LOCALIZATION NOTE (responsive.deviceNameAlreadyInUse): This is the text shown when adding a new
+# device with an already existing device name.
+responsive.deviceNameAlreadyInUse=Device name already in use
+
+# LOCALIZATION NOTE (responsive.deviceFormUpdate): Button text that updates a custom
+# device when the form is submitted.
+responsive.deviceFormUpdate=Update
diff --git a/l10n-en-GB/devtools/client/shared.properties b/l10n-en-GB/devtools/client/shared.properties
new file mode 100644
index 0000000000..33dd145445
--- /dev/null
+++ b/l10n-en-GB/devtools/client/shared.properties
@@ -0,0 +1,26 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# LOCALIZATION NOTE (dimensions): This is used to display the dimensions
+# of a node or image, like 100×200.
+dimensions=%S\u00D7%S
+
+# LOCALIZATION NOTE (boxModelSize.accessibleLabel): This is used to read the
+# dimensions of a node by a screen reader. This helps communicate
+# the visual information in a more explicit form. Example:
+# Size: Width 100, height 200.
+boxModelSize.accessibleLabel=Size: Width %1$S, height %2$S
+
+# LOCALIZATION NOTE (boxModelInfo.accessibleLabel): This is used to read the
+# dimensions and position of a node by a screen reader. This helps communicate
+# the visual information in a more explicit form. Example:
+# Dimensions: Width 100, height 200, position static.
+boxModelInfo.accessibleLabel=Dimensions: Width %1$S, height %2$S, position %3$S
+
+# LOCALIZATION NOTE (boxModelEditable.accessibleLabel): The string spoken by
+# screen readers for each button in the box model view that opens that property
+# for editing. %1$S is the property displayed in the tooltip when hovering.
+# %2$S is the value that is visually displayed.
+# Example: margin-left: 0.
+boxModelEditable.accessibleLabel=%1$S: %2$S
diff --git a/l10n-en-GB/devtools/client/sourceeditor.properties b/l10n-en-GB/devtools/client/sourceeditor.properties
new file mode 100644
index 0000000000..0d4bd64f89
--- /dev/null
+++ b/l10n-en-GB/devtools/client/sourceeditor.properties
@@ -0,0 +1,117 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# LOCALIZATION NOTE These strings are used inside the Source Editor component.
+# This component is used whenever source code is displayed for the purpose of
+# being edited, inside the Firefox developer tools - current examples are the
+# Scratchpad and the Style Editor tools.
+
+# LOCALIZATION NOTE These strings are used inside the Source Editor component.
+# This component is used whenever source code is displayed for the purpose of
+# being edited, inside the Firefox developer tools (like Style Editor).
+
+# LOCALIZATION NOTE The correct localization of this file might be to keep it
+# in English, or another language commonly spoken among web developers.
+# You want to make that choice consistent across the developer tools.
+# A good criteria is the language in which you'd find the best documentation
+# on web development on the web.
+
+# LOCALIZATION NOTE  (findCmd.promptMessage): This is the message shown when
+# the user wants to search for a string in the code. You can
+# access this feature by pressing Ctrl-F on Windows/Linux or Cmd-F on Mac.
+findCmd.promptMessage=Search for:
+
+# LOCALIZATION NOTE  (gotoLineCmd.promptTitle): This is the dialog title used
+# when the user wants to jump to a specific line number in the code. You can
+# access this feature by pressing Ctrl-J on Windows/Linux or Cmd-J on Mac.
+gotoLineCmd.promptTitle=Go to line…
+
+# LOCALIZATION NOTE  (autocompletion.docsLink): This is the text shown on
+# the link inside of the documentation popup.  If you type 'document' in Scratchpad
+# then press Shift+Space you can see the popup.
+autocompletion.docsLink=docs
+
+# LOCALIZATION NOTE  (autocompletion.notFound): This is the text shown in
+# the documentation popup if Tern fails to find a type for the object.
+autocompletion.notFound=not found
+
+# LOCALIZATION NOTE  (jumpToLine.commandkey): This is the key to use in
+# conjunction with accel (Command on Mac or Ctrl on other platforms) to jump to
+# a specific line in the editor.
+jumpToLine.commandkey=J
+
+# LOCALIZATION NOTE  (toggleComment.commandkey): This is the key to use in
+# conjunction with accel (Command on Mac or Ctrl on other platforms) to either
+# comment or uncomment selected lines in the editor.
+toggleComment.commandkey=/
+
+# LOCALIZATION NOTE  (indentLess.commandkey): This is the key to use in
+# conjunction with accel (Command on Mac or Ctrl on other platforms) to reduce
+# indentation level in CodeMirror. However, its default value also used by
+# the Toolbox to switch between tools so we disable it.
+#
+# DO NOT translate this key without proper synchronization with toolbox.dtd.
+indentLess.commandkey=[
+
+# LOCALIZATION NOTE  (indentMore.commandkey): This is the key to use in
+# conjunction with accel (Command on Mac or Ctrl on other platforms) to increase
+# indentation level in CodeMirror. However, its default value also used by
+# the Toolbox to switch between tools
+#
+# DO NOT translate this key without proper synchronization with toolbox.dtd.
+indentMore.commandkey=]
+
+# LOCALIZATION NOTE  (moveLineUp.commandkey): This is the combination of keys
+# used to move the current line up.
+# Do not localize "Alt", "Up", or change the format of the string. These are key
+# identifiers, not messages displayed to the user.
+moveLineUp.commandkey=Alt-Up
+
+# LOCALIZATION NOTE  (moveLineDown.commandkey): This is the combination of keys
+# used to move the current line up.
+# Do not localize "Alt", "Down", or change the format of the string. These are
+# key identifiers, not messages displayed to the user.
+moveLineDown.commandkey=Alt-Down
+
+# LOCALIZATION NOTE  (autocompletion.commandkey): This is the key, used with
+# Ctrl, for code autocompletion.
+# Do not localize "Space", it's the key identifier, not a message displayed to
+# the user.
+autocompletion.commandkey=Space
+
+# LOCALIZATION NOTE  (showInformation2.commandkey): This is the combination of
+# keys used to display more information, like type inference.
+# Do not localize "Shift", "Ctrl", "Space", or change the format of the string.
+# These are key identifiers, not messages displayed to the user.
+showInformation2.commandkey=Shift-Ctrl-Space
+
+# LOCALIZATION NOTE  (find.key):
+# Key shortcut used to find the typed search
+# Do not localize "CmdOrCtrl", "F", or change the format of the string. These are
+# key identifiers, not messages displayed to the user.
+find.key=CmdOrCtrl+F
+
+# LOCALIZATION NOTE (replaceAll.key):
+# Key shortcut used to replace the content of the editor
+# Do not localize "Shift", "CmdOrCtrl", "F", or change the format of the string. These are
+# key identifiers, not messages displayed to the user.
+replaceAll.key=Shift+CmdOrCtrl+F
+
+# LOCALIZATION NOTE (replaceAllMac.key):
+# Key shortcut used to replace the content of the editor on Mac
+# Do not localize "Alt", "CmdOrCtrl", "F", or change the format of the string. These are
+# key identifiers, not messages displayed to the user.
+replaceAllMac.key=Alt+CmdOrCtrl+F
+
+# LOCALIZATION NOTE  (findNext.key):
+# Key shortcut used to find again the typed search
+# Do not localize "CmdOrCtrl", "G", or change the format of the string. These are
+# key identifiers, not messages displayed to the user.
+findNext.key=CmdOrCtrl+G
+
+# LOCALIZATION NOTE (findPrev.key):
+# Key shortcut used to find the previous typed search
+# Do not localize "Shift", "CmdOrCtrl", "G", or change the format of the string. These are
+# key identifiers, not messages displayed to the user.
+findPrev.key=Shift+CmdOrCtrl+G
diff --git a/l10n-en-GB/devtools/client/startup.properties b/l10n-en-GB/devtools/client/startup.properties
new file mode 100644
index 0000000000..c5fc62b2e0
--- /dev/null
+++ b/l10n-en-GB/devtools/client/startup.properties
@@ -0,0 +1,248 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# LOCALIZATION NOTE (optionsButton.tooltip): This is used as the tooltip
+# for the options panel tab.
+optionsButton.tooltip=Toolbox Options
+
+# LOCALIZATION NOTE (options.label): This is used as the label of the tab in
+# the devtools window.
+options.label=Options
+
+# LOCALIZATION NOTE (options.panelLabel): This is used as the label for the
+# toolbox panel.
+options.panelLabel=Toolbox Options Panel
+
+# LOCALIZATION NOTE (options.darkTheme.label2)
+# Used as a label for dark theme
+options.darkTheme.label2=Dark
+
+# LOCALIZATION NOTE (options.lightTheme.label2)
+# Used as a label for light theme
+options.lightTheme.label2=Light
+
+# LOCALIZATION NOTE (performance.label):
+# This string is displayed in the title of the tab when the profiler is
+# displayed inside the developer tools window and in the Developer Tools Menu.
+performance.label=Performance
+
+# LOCALIZATION NOTE (performance.panelLabel):
+# This is used as the label for the toolbox panel.
+performance.panelLabel=Performance Panel
+
+# LOCALIZATION NOTE (performance.accesskey)
+# Used for the menuitem in the tool menu
+performance.accesskey=P
+
+# LOCALIZATION NOTE (performance.tooltip):
+# This string is displayed in the tooltip of the tab when the profiler is
+# displayed inside the developer tools window.
+# Keyboard shortcut for Performance Tools will be shown inside brackets.
+performance.tooltip=Performance (%S)
+
+# LOCALIZATION NOTE (MenuWebconsole.label): the string displayed in the Tools
+# menu as a shortcut to open the devtools with the Web Console tab selected.
+MenuWebconsole.label=Web Console
+
+# LOCALIZATION NOTE (ToolboxTabWebconsole.label): the string displayed as the
+# label of the tab in the devtools window.
+ToolboxTabWebconsole.label=Console
+
+# LOCALIZATION NOTE (ToolboxWebConsole.panelLabel): the string used as the
+# label for the toolbox panel.
+ToolboxWebConsole.panelLabel=Console Panel
+
+# LOCALIZATION NOTE (ToolboxWebconsole.tooltip2): the string displayed in the
+# tooltip of the tab when the Web Console is displayed inside the developer
+# tools window.
+# Keyboard shortcut for Console will be shown inside the brackets.
+ToolboxWebconsole.tooltip2=Web Console (%S)
+
+webConsoleCmd.accesskey=W
+
+# LOCALIZATION NOTE (ToolboxDebugger.label):
+# This string is displayed in the title of the tab when the debugger is
+# displayed inside the developer tools window and in the Developer Tools Menu.
+ToolboxDebugger.label=Debugger
+
+# LOCALIZATION NOTE (ToolboxDebugger.panelLabel):
+# This is used as the label for the toolbox panel.
+ToolboxDebugger.panelLabel=Debugger Panel
+
+# LOCALIZATION NOTE (ToolboxDebugger.tooltip4):
+# This string is displayed in the tooltip of the tab when the debugger is
+# displayed inside the developer tools window.
+ToolboxDebugger.tooltip4=JavaScript Debugger (%S)
+
+# LOCALIZATION NOTE (debuggerMenu.accesskey)
+# Used for the menuitem in the tool menu
+debuggerMenu.accesskey=D
+
+# LOCALIZATION NOTE (ToolboxStyleEditor.label):
+# This string is displayed in the title of the tab when the style editor is
+# displayed inside the developer tools window and in the Developer Tools Menu.
+ToolboxStyleEditor.label=Style Editor
+
+# LOCALIZATION NOTE (ToolboxStyleEditor.panelLabel):
+# This is used as the label for the toolbox panel.
+ToolboxStyleEditor.panelLabel=Style Editor Panel
+
+# LOCALIZATION NOTE (ToolboxStyleEditor.tooltip3):
+# This string is displayed in the tooltip of the tab when the style editor is
+# displayed inside the developer tools window.
+# A keyboard shortcut for Stylesheet Editor will be shown inside the latter pair of brackets.
+ToolboxStyleEditor.tooltip3=Stylesheet Editor (CSS) (%S)
+
+# LOCALIZATION NOTE (open.accesskey): The access key used to open the style
+# editor.
+open.accesskey=l
+
+# LOCALIZATION NOTE (inspector.*)
+# Used for the menuitem in the tool menu
+inspector.label=Inspector
+inspector.accesskey=I
+
+# LOCALIZATION NOTE (inspector.panelLabel)
+# Labels applied to the panel and views within the panel in the toolbox
+inspector.panelLabel=Inspector Panel
+
+# LOCALIZATION NOTE (inspector.tooltip2)
+# Keyboard shortcut for DOM and Style Inspector will be shown inside brackets.
+inspector.tooltip2=DOM and Style Inspector (%S)
+
+# LOCALIZATION NOTE (inspector.mac.tooltip)
+# This is the exact same string as inspector.tooltip2, except that we show it
+# on mac only, where we support toggling the inspector with either cmd+shift+C,
+# or cmd+opt+C
+inspector.mac.tooltip=DOM and Style Inspector (%1$S or %2$S)
+
+# LOCALIZATION NOTE (netmonitor.label):
+# This string is displayed in the title of the tab when the Network Monitor is
+# displayed inside the developer tools window and in the Developer Tools Menu.
+netmonitor.label=Network
+
+# LOCALIZATION NOTE (netmonitor.panelLabel):
+# This is used as the label for the toolbox panel.
+netmonitor.panelLabel=Network Panel
+
+# LOCALIZATION NOTE (netmonitor.accesskey)
+# Used for the menuitem in the tool menu
+netmonitor.accesskey=N
+
+# LOCALIZATION NOTE (netmonitor.tooltip2):
+# This string is displayed in the tooltip of the tab when the Network Monitor is
+# displayed inside the developer tools window.
+# Keyboard shortcut for Network Monitor will be shown inside the brackets.
+netmonitor.tooltip2=Network Monitor (%S)
+
+# LOCALIZATION NOTE (storage.accesskey): The access key used to open the storage
+# editor.
+storage.accesskey=a
+
+# LOCALIZATION NOTE (storage.label):
+# This string is displayed as the label of the tab in the developer tools window
+storage.label=Storage
+
+# LOCALIZATION NOTE (storage.menuLabel):
+# This string is displayed in the Tools menu as a shortcut to open the devtools
+# with the Storage Inspector tab selected.
+storage.menuLabel=Storage Inspector
+
+# LOCALIZATION NOTE (storage.panelLabel):
+# This string is used as the aria-label for the iframe of the Storage Inspector
+# tool in developer tools toolbox.
+storage.panelLabel=Storage Panel
+
+# LOCALIZATION NOTE (storage.tooltip3):
+# This string is displayed in the tooltip of the tab when the storage editor is
+# displayed inside the developer tools window.
+# A keyboard shortcut for Storage Inspector will be shown inside the brackets.
+storage.tooltip3=Storage Inspector (Cookies, Local Storage, …) (%S)
+
+# LOCALIZATION NOTE (memory.label): This string is displayed in the title of the
+# tab when the memory tool is displayed inside the developer tools window and in
+# the Developer Tools Menu.
+memory.label=Memory
+
+# LOCALIZATION NOTE (memory.panelLabel): This is used as the label for the
+# toolbox panel.
+memory.panelLabel=Memory Panel
+
+# LOCALIZATION NOTE (memory.tooltip): This string is displayed in the tooltip of
+# the tab when the memory tool is displayed inside the developer tools window.
+memory.tooltip=Memory
+
+# LOCALIZATION NOTE (dom.label):
+# This string is displayed in the title of the tab when the DOM panel is
+# displayed inside the developer tools window and in the Developer Tools Menu.
+dom.label=DOM
+
+# LOCALIZATION NOTE (dom.panelLabel):
+# This is used as the label for the toolbox panel.
+dom.panelLabel=DOM Panel
+
+# LOCALIZATION NOTE (dom.accesskey)
+# Used for the menuitem in the tool menu
+dom.accesskey=D
+
+# LOCALIZATION NOTE (dom.tooltip):
+# This string is displayed in the tooltip of the tab when the DOM is
+# displayed inside the developer tools window.
+# Keyboard shortcut for DOM panel will be shown inside the brackets.
+dom.tooltip=DOM (%S)
+
+# LOCALIZATION NOTE (accessibility.label):
+# This string is displayed in the title of the tab when the Accessibility panel
+# is displayed inside the developer tools window and in the Developer Tools Menu.
+accessibility.label=Accessibility
+
+# LOCALIZATION NOTE (accessibility.panelLabel):
+# This is used as the label for the toolbox panel.
+accessibility.panelLabel=Accessibility Panel
+
+# LOCALIZATION NOTE (accessibility.accesskey)
+# Used for the menuitem in the tool menu
+accessibility.accesskey=y
+
+# LOCALIZATION NOTE (accessibility.tooltip3):
+# This string is displayed in the tooltip of the tab when the Accessibility is
+# displayed inside the developer tools window.
+# Keyboard shortcut for Accessibility panel will be shown inside the brackets.
+accessibility.tooltip3=Accessibility (%S)
+
+# LOCALIZATION NOTE (application.label):
+# This string is displayed in the title of the tab when the Application panel
+# is displayed inside the developer tools window and in the Developer Tools Menu.
+application.label=Application
+
+# LOCALIZATION NOTE (application.panelLabel):
+# This is used as the label for the toolbox panel.
+application.panelLabel=Application Panel
+
+# LOCALIZATION NOTE (application.tooltip):
+# This string is displayed in the tooltip of the tab when the Application panel is
+# displayed inside the developer tools window.
+application.tooltip=Application Panel
+
+# LOCALIZATION NOTE (toolbox.buttons.responsive):
+# This is the tooltip of the button in the toolbox toolbar that toggles
+# the Responsive mode.
+# Keyboard shortcut will be shown inside brackets.
+toolbox.buttons.responsive = Responsive Design Mode (%S)
+
+# LOCALIZATION NOTE (toolbox.buttons.screenshot):
+# This is the tooltip of the button in the toolbox toolbar that allows you to
+# take a screenshot of the entire page
+toolbox.buttons.screenshot = Take a screenshot of the entire page
+
+# LOCALIZATION NOTE (toolbox.buttons.rulers):
+# This is the tooltip of the button in the toolbox toolbar that toggles the
+# rulers in the page
+toolbox.buttons.rulers = Toggle rulers for the page
+
+# LOCALIZATION NOTE (toolbox.buttons.measure):
+# This is the tooltip of the button in the toolbox toolbar that toggles the
+# measuring tools
+toolbox.buttons.measure = Measure a portion of the page
+
diff --git a/l10n-en-GB/devtools/client/storage.ftl b/l10n-en-GB/devtools/client/storage.ftl
new file mode 100644
index 0000000000..f3574076b1
--- /dev/null
+++ b/l10n-en-GB/devtools/client/storage.ftl
@@ -0,0 +1,132 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+### These strings are used inside the Storage Inspector.
+
+# Key shortcut used to focus the filter box on top of the data view
+storage-filter-key = CmdOrCtrl+F
+
+# Hint shown when the selected storage host does not contain any data
+storage-table-empty-text = No data present for selected host
+
+# Hint shown when the cookies storage type is selected. Clicking the link will open
+# https://developer.mozilla.org/docs/Tools/Storage_Inspector/Cookies
+storage-table-type-cookies-hint = View and edit cookies by selecting a host. <a data-l10n-name="learn-more-link">Learn more</a>
+
+# Hint shown when the local storage type is selected. Clicking the link will open
+# https://developer.mozilla.org/docs/Tools/Storage_Inspector/Local_Storage_Session_Storage
+storage-table-type-localstorage-hint = View and edit the local storage by selecting a host. <a data-l10n-name="learn-more-link">Learn more</a>
+
+# Hint shown when the session storage type is selected. Clicking the link will open
+# https://developer.mozilla.org/docs/Tools/Storage_Inspector/Local_Storage_Session_Storage
+storage-table-type-sessionstorage-hint = View and edit the session storage by selecting a host. <a data-l10n-name="learn-more-link">Learn more</a>
+
+# Hint shown when the IndexedDB storage type is selected. Clicking the link will open
+# https://developer.mozilla.org/docs/Tools/Storage_Inspector/IndexedDB
+storage-table-type-indexeddb-hint = View and delete IndexedDB entries by selecting a database. <a data-l10n-name="learn-more-link">Learn more</a>
+
+# Hint shown when the cache storage type is selected. Clicking the link will open
+# https://developer.mozilla.org/docs/Tools/Storage_Inspector/Cache_Storage
+storage-table-type-cache-hint = View and delete the cache storage entries by selecting a storage. <a data-l10n-name="learn-more-link">Learn more</a>
+
+# Hint shown when the extension storage type is selected. Clicking the link will open
+# https://developer.mozilla.org/docs/Tools/Storage_Inspector/Extension_Storage
+storage-table-type-extensionstorage-hint = View and edit the extension storage by selecting a host. <a data-l10n-name="learn-more-link">Learn more</a>
+
+# Placeholder for the searchbox that allows you to filter the table items
+storage-search-box =
+    .placeholder = Filter Items
+
+# Placeholder text in the sidebar search box
+storage-variable-view-search-box =
+    .placeholder = Filter values
+
+# Add Item button title
+storage-add-button =
+    .title = Add Item
+
+# Refresh button title
+storage-refresh-button =
+    .title = Refresh Items
+
+# Context menu action to delete all storage items
+storage-context-menu-delete-all =
+    .label = Delete All
+
+# Context menu action to delete all session cookies
+storage-context-menu-delete-all-session-cookies =
+    .label = Delete All Session Cookies
+
+# Context menu action to copy a storage item
+storage-context-menu-copy =
+    .label = Copy
+
+# Context menu action to delete storage item
+# Variables:
+#   $itemName (String) - Name of the storage item that will be deleted
+storage-context-menu-delete =
+    .label = Delete “{ $itemName }”
+
+# Context menu action to add an item
+storage-context-menu-add-item =
+    .label = Add Item
+
+# Context menu action to delete all storage items from a given host
+# Variables:
+#   $host (String) - Host for which we want to delete the items
+storage-context-menu-delete-all-from =
+    .label = Delete All From “{ $host }”
+
+## Header names of the columns in the Storage Table for each type of storage available
+## through the Storage Tree to the side.
+
+storage-table-headers-cookies-name = Name
+storage-table-headers-cookies-value = Value
+storage-table-headers-cookies-expires = Expires / Max-Age
+storage-table-headers-cookies-size = Size
+storage-table-headers-cookies-last-accessed = Last Accessed
+storage-table-headers-cookies-creation-time = Created
+storage-table-headers-cache-status = Status
+storage-table-headers-extension-storage-area = Storage Area
+
+## Labels for Storage type groups present in the Storage Tree, like cookies, local storage etc.
+
+storage-tree-labels-cookies = Cookies
+storage-tree-labels-local-storage = Local Storage
+storage-tree-labels-session-storage = Session Storage
+storage-tree-labels-indexed-db = Indexed DB
+storage-tree-labels-cache = Cache Storage
+storage-tree-labels-extension-storage = Extension Storage
+
+##
+
+# Tooltip for the button that collapses the right panel in the
+# storage UI when the panel is closed.
+storage-expand-pane =
+    .title = Expand Pane
+
+# Tooltip for the button that collapses the right panel in the
+# storage UI when the panel is open.
+storage-collapse-pane =
+    .title = Collapse Pane
+
+# String displayed in the expires column when the cookie is a Session Cookie
+storage-expires-session = Session
+
+# Heading displayed over the item value in the sidebar
+storage-data = Data
+
+# Heading displayed over the item parsed value in the sidebar
+storage-parsed-value = Parsed Value
+
+# Warning notification when IndexedDB database could not be deleted immediately.
+# Variables:
+#   $dbName (String) - Name of the database
+storage-idb-delete-blocked = Database “{ $dbName }” will be deleted after all connections are closed.
+
+# Error notification when IndexedDB database could not be deleted.
+# Variables:
+#   $dbName (String) - Name of the database
+storage-idb-delete-error = Database “{ $dbName }” could not be deleted.
diff --git a/l10n-en-GB/devtools/client/styleeditor.ftl b/l10n-en-GB/devtools/client/styleeditor.ftl
new file mode 100644
index 0000000000..2b266be909
--- /dev/null
+++ b/l10n-en-GB/devtools/client/styleeditor.ftl
@@ -0,0 +1,56 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+styleeditor-new-button =
+    .tooltiptext = Create and append a new style sheet to the document
+    .accesskey = N
+styleeditor-import-button =
+    .tooltiptext = Import and append an existing style sheet to the document
+    .accesskey = I
+styleeditor-filter-input =
+    .placeholder = Filter style sheets
+styleeditor-visibility-toggle =
+    .tooltiptext = Toggle style sheet visibility
+    .accesskey = S
+styleeditor-visibility-toggle-system =
+    .tooltiptext = System style sheets can’t be disabled
+styleeditor-save-button = Save
+    .tooltiptext = Save this style sheet to a file
+    .accesskey = S
+styleeditor-options-button =
+    .tooltiptext = Style Editor options
+styleeditor-at-rules = At-rules
+styleeditor-editor-textbox =
+    .data-placeholder = Type CSS here.
+styleeditor-no-stylesheet = This page has no style sheet.
+styleeditor-no-stylesheet-tip = Perhaps you’d like to <a data-l10n-name="append-new-stylesheet">append a new style sheet</a>?
+styleeditor-open-link-new-tab =
+    .label = Open Link in New Tab
+styleeditor-copy-url =
+    .label = Copy URL
+styleeditor-find =
+    .label = Find
+    .accesskey = F
+styleeditor-find-again =
+    .label = Find Again
+    .accesskey = g
+styleeditor-go-to-line =
+    .label = Jump to Line…
+    .accesskey = J
+# Label displayed when searching a term that is not found in any stylesheet path
+styleeditor-stylesheet-all-filtered = No matching style sheet has been found.
+# This string is shown in the style sheets list
+# Variables:
+#   $ruleCount (Integer) - The number of rules in the stylesheet.
+styleeditor-stylesheet-rule-count =
+    { $ruleCount ->
+        [one] { $ruleCount } rule.
+       *[other] { $ruleCount } rules.
+    }
+# Title for the pretty print button in the editor footer.
+styleeditor-pretty-print-button =
+    .title = Pretty print style sheet
+# Title for the pretty print button in the editor footer, when it's disabled
+styleeditor-pretty-print-button-disabled =
+    .title = Can only pretty print CSS files
diff --git a/l10n-en-GB/devtools/client/styleeditor.properties b/l10n-en-GB/devtools/client/styleeditor.properties
new file mode 100644
index 0000000000..db24ad8eee
--- /dev/null
+++ b/l10n-en-GB/devtools/client/styleeditor.properties
@@ -0,0 +1,74 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# LOCALIZATION NOTE These strings are used inside the Style Editor.
+# LOCALIZATION NOTE The correct localization of this file might be to keep it
+# in English, or another language commonly spoken among web developers.
+# You want to make that choice consistent across the developer tools.
+# A good criteria is the language in which you'd find the best documentation
+# on web development on the web.
+
+# LOCALIZATION NOTE  (inlineStyleSheet): This is the name used for an style sheet
+# that is declared inline in the <style> element. Shown in the stylesheets list.
+# the argument is the index (order) of the containing <style> element in the
+# document.
+inlineStyleSheet=<inline style sheet #%S>
+
+# LOCALIZATION NOTE  (newStyleSheet): This is the default name for a new
+# user-created style sheet.
+newStyleSheet=New style sheet #%S
+
+# LOCALIZATION NOTE  (ruleCount.label): Semicolon-separated list of plural forms.
+# See: http://developer.mozilla.org/en/docs/Localization_and_Plurals
+# This is shown in the style sheets list.
+# #1 rule.
+# example: 111 rules.
+ruleCount.label=#1 rule.;#1 rules.
+
+# LOCALIZATION NOTE  (error-load): This is shown when loading fails.
+error-load=Style sheet could not be loaded.
+
+# LOCALIZATION NOTE  (error-save): This is shown when saving fails.
+error-save=Style sheet could not be saved.
+
+# LOCALIZATION NOTE  (importStyleSheet.title): This is the file picker title,
+# when you import a style sheet into the Style Editor.
+importStyleSheet.title=Import style sheet
+
+# LOCALIZATION NOTE  (importStyleSheet.filter): This is the *.css filter title
+importStyleSheet.filter=CSS files
+
+# LOCALIZATION NOTE  (saveStyleSheet.title): This is the file picker title,
+# when you save a style sheet from the Style Editor.
+saveStyleSheet.title=Save style sheet
+
+# LOCALIZATION NOTE  (saveStyleSheet.filter): This is the *.css filter title
+saveStyleSheet.filter=CSS files
+
+# LOCALIZATION NOTE  (saveStyleSheet.commandkey): This the key to use in
+# conjunction with accel (Command on Mac or Ctrl on other platforms) to Save
+saveStyleSheet.commandkey=S
+
+# LOCALIZATION NOTE  (focusFilterInput.commandkey): This is the key to use in
+# conjunction with accel (Command on Mac or Ctrl on other platforms) to focus the
+# filter input. Don't use "F" as it's used by the CodeMirror editor to perform an
+# in-file search; if possible, keep it the same as sources.search.key2.
+focusFilterInput.commandkey=P
+
+# LOCALIZATION NOTE  (showOriginalSources.label): This is the label on the context
+# menu item to toggle showing original sources in the editor.
+showOriginalSources.label=Show Original Sources
+
+# LOCALIZATION NOTE  (showOriginalSources.accesskey): This is the access key for
+# the menu item to toggle showing original sources in the editor.
+showOriginalSources.accesskey=o
+
+# LOCALIZATION NOTE  (showAtRulesSidebar.label): This is the label on the context
+# menu item to toggle showing at-rules shortcuts in a sidebar.
+# "@media" and "@supports" should not be translated as they are CSS rule identifiers.
+showAtRulesSidebar.label=Show At-rules Sidebar (@media, @supports, …)
+
+# LOCALIZATION NOTE  (showAtRulesSidebar.accesskey): This is the access key for
+# the menu item to toggle showing the at-rules sidebar.
+showAtRulesSidebar.accesskey=a
diff --git a/l10n-en-GB/devtools/client/toolbox-options.ftl b/l10n-en-GB/devtools/client/toolbox-options.ftl
new file mode 100644
index 0000000000..baf0d57e0e
--- /dev/null
+++ b/l10n-en-GB/devtools/client/toolbox-options.ftl
@@ -0,0 +1,154 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+### Localization for Developer Tools options
+
+
+## Default Developer Tools section
+
+# The heading
+options-select-default-tools-label = Default Developer Tools
+
+# The label for the explanation of the * marker on a tool which is currently not supported
+# for the target of the toolbox.
+options-tool-not-supported-label = * Not supported for current toolbox target
+
+# The label for the heading of group of checkboxes corresponding to the developer tools
+# added by add-ons. This heading is hidden when there is no developer tool installed by add-ons.
+options-select-additional-tools-label = Developer Tools installed by add-ons
+
+# The label for the heading of group of checkboxes corresponding to the default developer
+# tool buttons.
+options-select-enabled-toolbox-buttons-label = Available Toolbox Buttons
+
+# The label for the heading of the radiobox corresponding to the theme
+options-select-dev-tools-theme-label = Themes
+
+## Inspector section
+
+# The heading
+options-context-inspector = Inspector
+
+# The label for the checkbox option to show user agent styles
+options-show-user-agent-styles-label = Show Browser Styles
+options-show-user-agent-styles-tooltip =
+    .title = Turning this on will show default styles that are loaded by the browser.
+
+# The label for the checkbox option to enable collapse attributes
+options-collapse-attrs-label = Truncate DOM attributes
+options-collapse-attrs-tooltip =
+    .title = Truncate long attributes in the inspector
+
+# The label for the checkbox option to enable the "drag to update" feature
+options-inspector-draggable-properties-label = Click and drag to edit size values
+options-inspector-draggable-properties-tooltip =
+    .title = Click and drag to edit size values in the inspector rules view.
+
+# The label for the checkbox option to enable simplified highlighting on page elements
+# within the inspector for users who enabled prefers-reduced-motion = reduce
+options-inspector-simplified-highlighters-label = Use simpler highlighters with prefers-reduced-motion
+options-inspector-simplified-highlighters-tooltip =
+    .title = Enables simplified highlighters when prefers-reduced-motion is enabled. Draws lines instead of filled rectangles around highlighted elements to avoid flashing effects.
+
+## "Default Color Unit" options for the Inspector
+
+options-default-color-unit-label = Default colour unit
+options-default-color-unit-authored = As Authored
+options-default-color-unit-hex = Hex
+options-default-color-unit-hsl = HSL(A)
+options-default-color-unit-rgb = RGB(A)
+options-default-color-unit-hwb = HWB
+options-default-color-unit-name = Colour Names
+
+## Style Editor section
+
+# The heading
+options-styleeditor-label = Style Editor
+
+# The label for the checkbox that toggles autocompletion of css in the Style Editor
+options-stylesheet-autocompletion-label = Autocomplete CSS
+options-stylesheet-autocompletion-tooltip =
+    .title = Autocomplete CSS properties, values and selectors in Style Editor as you type
+
+## Screenshot section
+
+# The heading
+options-screenshot-label = Screenshot Behaviour
+
+# Label for the checkbox that toggles screenshot to clipboard feature
+options-screenshot-clipboard-only-label = Screenshot to clipboard only
+options-screenshot-clipboard-tooltip2 =
+    .title = Saves the screenshot directly to the clipboard
+
+# Label for the checkbox that toggles the camera shutter audio for screenshot tool
+options-screenshot-audio-label = Play camera shutter sound
+options-screenshot-audio-tooltip =
+    .title = Enables the camera audio sound when taking screenshot
+
+## Editor section
+
+# The heading
+options-sourceeditor-label = Editor Preferences
+
+options-sourceeditor-detectindentation-tooltip =
+    .title = Guess indentation based on source content
+options-sourceeditor-detectindentation-label = Detect indentation
+options-sourceeditor-autoclosebrackets-tooltip =
+    .title = Automatically insert closing brackets
+options-sourceeditor-autoclosebrackets-label = Autoclose brackets
+options-sourceeditor-expandtab-tooltip =
+    .title = Use spaces instead of the tab character
+options-sourceeditor-expandtab-label = Indent using spaces
+options-sourceeditor-tabsize-label = Tab size
+options-sourceeditor-keybinding-label = Keybindings
+options-sourceeditor-keybinding-default-label = Default
+
+## Advanced section
+
+# The heading (this item is also used in perftools.ftl)
+options-context-advanced-settings = Advanced settings
+
+# The label for the checkbox that toggles the HTTP cache on or off
+options-disable-http-cache-label = Disable HTTP Cache (when toolbox is open)
+options-disable-http-cache-tooltip =
+    .title = Turning this option on will disable the HTTP cache for all tabs that have the toolbox open. Service Workers are not affected by this option.
+
+# The label for checkbox that toggles JavaScript on or off
+options-disable-javascript-label = Disable JavaScript *
+options-disable-javascript-tooltip =
+    .title = Turning this option on will disable JavaScript for the current tab. If the tab or the toolbox is closed then this setting will be forgotten.
+
+# The label for checkbox that toggles chrome debugging, i.e. the devtools.chrome.enabled preference
+options-enable-chrome-label = Enable browser chrome and add-on debugging toolboxes
+options-enable-chrome-tooltip =
+    .title = Turning this option on will allow you to use various developer tools in browser context (via Tools > Web Developer > Browser Toolbox) and debug add-ons from the Add-ons Manager
+
+# The label for checkbox that toggles remote debugging, i.e. the devtools.debugger.remote-enabled preference
+options-enable-remote-label = Enable remote debugging
+options-enable-remote-tooltip2 =
+    .title = Turning this option on will allow to debug this browser instance remotely
+
+# The label for checkbox that enables F12 as a shortcut to open DevTools
+options-enable-f12-label = Use the F12 key to open or close DevTools
+options-enable-f12-tooltip =
+    .title = Turning this option on will bind the F12 key to open or close the DevTools toolbox
+
+# The label for checkbox that toggles custom formatters for objects
+options-enable-custom-formatters-label = Enable custom formatters
+options-enable-custom-formatters-tooltip =
+    .title = Turning this option on will allow sites to define custom formatters for DOM objects
+
+# The label for checkbox that toggles the service workers testing over HTTP on or off.
+options-enable-service-workers-http-label = Enable Service Workers over HTTP (when toolbox is open)
+options-enable-service-workers-http-tooltip =
+    .title = Turning this option on will enable the service workers over HTTP for all tabs that have the toolbox open.
+
+# The label for the checkbox that toggles source maps in all tools.
+options-source-maps-label = Enable Source Maps
+options-source-maps-tooltip =
+    .title = If you enable this option sources will be mapped in the tools.
+
+# The message shown for settings that trigger page reload
+options-context-triggers-page-refresh = * Current session only, reloads the page
diff --git a/l10n-en-GB/devtools/client/toolbox.ftl b/l10n-en-GB/devtools/client/toolbox.ftl
new file mode 100644
index 0000000000..00fb5b1521
--- /dev/null
+++ b/l10n-en-GB/devtools/client/toolbox.ftl
@@ -0,0 +1,55 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+### These messages are used in the DevTools toolbox.
+
+
+## These labels are shown in the "..." menu in the toolbox, and represent different
+## commands such as the docking of DevTools, toggling features, and viewing some
+## external links. Some of the commands have the keyboard shortcut shown next to
+## the label.
+
+toolbox-meatball-menu-dock-bottom-label = Dock to Bottom
+toolbox-meatball-menu-dock-left-label = Dock to Left
+toolbox-meatball-menu-dock-right-label = Dock to Right
+toolbox-meatball-menu-dock-separate-window-label = Separate Window
+
+toolbox-meatball-menu-splitconsole-label = Show Split Console
+toolbox-meatball-menu-hideconsole-label = Hide Split Console
+
+toolbox-meatball-menu-settings-label = Settings
+toolbox-meatball-menu-documentation-label = Documentation…
+toolbox-meatball-menu-community-label = Community…
+
+# This menu item is only available in the browser toolbox. It forces the popups/panels
+# to stay visible on blur, which is primarily useful for addon developers and Firefox
+# contributors.
+toolbox-meatball-menu-noautohide-label = Disable Popup Auto-Hide
+
+toolbox-meatball-menu-pseudo-locale-accented = Enable “accented” locale
+toolbox-meatball-menu-pseudo-locale-bidi = Enable “bidi” locale
+
+##
+
+
+## These labels are shown in the top-toolbar in the Browser Toolbox and Browser Console
+
+toolbox-mode-browser-toolbox-label = Browser Toolbox Mode
+toolbox-mode-browser-console-label = Browser Console Mode
+
+toolbox-mode-everything-label = Multiprocess
+toolbox-mode-everything-sub-label = (Slower)
+toolbox-mode-everything-container =
+    .title = Debug everything in all processes
+
+toolbox-mode-parent-process-label = Parent process only
+toolbox-mode-parent-process-sub-label = (Fast)
+toolbox-mode-parent-process-container =
+    .title = Only focus on resources from the parent process.
+
+toolbox-always-on-top-enabled2 = Disable always on top
+    .title = This will restart the Developer Tools
+toolbox-always-on-top-disabled2 = Enable always on top
+    .title = This will restart the Developer Tools
diff --git a/l10n-en-GB/devtools/client/toolbox.properties b/l10n-en-GB/devtools/client/toolbox.properties
new file mode 100644
index 0000000000..098ee7c29f
--- /dev/null
+++ b/l10n-en-GB/devtools/client/toolbox.properties
@@ -0,0 +1,267 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# LOCALIZATION NOTE (toolbox.titleTemplate1): This is the template
+# used to format the title of the toolbox.
+# The URL of the page being targeted: %1$S.
+toolbox.titleTemplate1=Developer Tools — %1$S
+
+# LOCALIZATION NOTE (toolbox.titleTemplate2): This is the template
+# used to format the title of the toolbox.
+# The page title or other name for the thing being targeted: %1$S
+# The URL of the page being targeted: %2$S.
+toolbox.titleTemplate2=Developer Tools — %1$S — %2$S
+
+# LOCALIZATION NOTE (toolbox.multiProcessBrowserToolboxTitle): Title used for
+# the Browser Toolbox when the pref `devtools.browsertoolbox.fission` is true.
+# This Browser Toolbox allows to debug the parent process as well as the content
+# processes in the same toolbox.
+toolbox.multiProcessBrowserToolboxTitle=Multiprocess Browser Toolbox
+
+# LOCALIZATION NOTE (toolbox.parentProcessBrowserToolboxTitle): Title used for
+# the Browser Toolbox when the pref `devtools.browsertoolbox.fission` and
+# `devtools.browsertoolbox.scope` is set to "parent-process".
+# This Browser Toolbox allows to debug only the parent process resources.
+toolbox.parentProcessBrowserToolboxTitle=Parent process Browser Toolbox
+
+# LOCALIZATION NOTE (toolbox.defaultTitle): This is used as the tool
+# name when no tool is selected.
+toolbox.defaultTitle=Developer Tools
+
+# LOCALIZATION NOTE (toolbox.label): This is used as the label for the
+# toolbox as a whole
+toolbox.label=Developer Tools
+
+# LOCALIZATION NOTE (options.autoTheme.label)
+# Used as a label for auto theme
+options.autoTheme.label=Auto
+
+# LOCALIZATION NOTE (options.toolNotSupportedMarker): This is the template
+# used to add a * marker to the label for the Options Panel tool checkbox for the
+# tool which is not supported for the current toolbox target.
+# The name of the tool: %1$S.
+options.toolNotSupportedMarker=%1$S *
+
+# LOCALIZATION NOTE (toolbox.pickButton.tooltip)
+# This is the tooltip of the element picker button in the toolbox toolbar.
+# %S is the keyboard shortcut that toggles the element picker.
+toolbox.elementPicker.tooltip=Pick an element from the page (%S)
+
+# LOCALIZATION NOTE (toolbox.pickButton.mac.tooltip)
+# Like toolbox.pickButton.tooltip, but for macOS there are two possible keyboard
+# shortcuts: Cmd+Shift+C or Cmd+Opt+C
+toolbox.elementPicker.mac.tooltip=Pick an element from the page (%1$S or %2$S)
+
+# LOCALIZATION NOTE (toolbox.androidElementPicker.tooltip)
+# This is the tooltip of the element picker button in the about:devtools-toolbox toolbox toolbar
+# when debugging an Android device
+# %S is the keyboard shortcut that toggles the element picker.
+toolbox.androidElementPicker.tooltip=Pick an element from the Android phone (%S)
+
+# LOCALIZATION NOTE (toolbox.androidElementPicker.mac.tooltip)
+# Like toolbox.androidElementPicker.tooltip, but for macOS as there are two possible keyboard
+# shortcuts (Cmd+Shift+C or Cmd+Opt+C)
+# %1$S and %2$S are the keyboard shortcuts that toggle the element picker.
+toolbox.androidElementPicker.mac.tooltip=Pick an element from the Android phone (%1$S or %2$S)
+
+# LOCALIZATION NOTE (toolbox.elementPicker.key)
+# Key shortcut used to toggle the element picker.
+toolbox.elementPicker.key=CmdOrCtrl+Shift+C
+
+# LOCALIZATION NOTE (toolbox.elementPicker.mac.key)
+# Key shortcut used to toggle the element picker for macOS.
+toolbox.elementPicker.mac.key=Cmd+Opt+C
+
+# LOCALIZATION NOTE (toolbox.viewCssSourceInStyleEditor.label)
+# Used as a message in either tooltips or contextual menu items to open the
+# corresponding URL as a css file in the Style-Editor tool.
+# DEV NOTE: Mostly used wherever toolbox.viewSourceInStyleEditorByXX is used.
+toolbox.viewCssSourceInStyleEditor.label=Open File in Style-Editor
+
+# LOCALIZATION NOTE (toolbox.viewJsSourceInDebugger.label)
+# Used as a message in either tooltips or contextual menu items to open the
+# corresponding URL as a js file in the Debugger tool.
+# DEV NOTE: Mostly used wherever toolbox.viewSourceInDebugger is used.
+toolbox.viewJsSourceInDebugger.label=Open File in Debugger
+
+toolbox.resumeOrderWarning=Page did not resume after the debugger was attached. To fix this, please close and re-open the toolbox.
+
+# LOCALIZATION NOTE (toolbox.help.key)
+# Key shortcut used to open the options panel
+toolbox.help.key=F1
+
+# LOCALIZATION NOTE (toolbox.nextTool.key)
+# Key shortcut used to select the next tool
+toolbox.nextTool.key=CmdOrCtrl+]
+
+# LOCALIZATION NOTE (toolbox.previousTool.key)
+# Key shortcut used to select the previous tool
+toolbox.previousTool.key=CmdOrCtrl+[
+
+# LOCALIZATION NOTE (toolbox.zoom*.key)
+# Key shortcuts used to zomm in/out or reset the toolbox
+# Should match full-zoom-*-shortcut values from browserSets.ftl
+toolbox.zoomIn.key=CmdOrCtrl+Plus
+toolbox.zoomIn2.key=CmdOrCtrl+=
+
+toolbox.zoomOut.key=CmdOrCtrl+-
+toolbox.zoomOut2.key=
+
+toolbox.zoomReset.key=CmdOrCtrl+0
+toolbox.zoomReset2.key=
+
+# LOCALIZATION NOTE (toolbox.reload*.key)
+# Key shortcuts used to reload the page
+toolbox.reload.key=CmdOrCtrl+R
+toolbox.reload2.key=F5
+
+# LOCALIZATION NOTE (toolbox.forceReload*.key)
+# Key shortcuts used to force reload of the page by bypassing caches
+toolbox.forceReload.key=CmdOrCtrl+Shift+R
+toolbox.forceReload2.key=CmdOrCtrl+F5
+
+# LOCALIZATION NOTE (toolbox.toggleHost.key)
+# Key shortcut used to move the toolbox in bottom or side of the browser window
+toolbox.toggleHost.key=CmdOrCtrl+Shift+D
+
+# LOCALIZATION NOTE (toolbox.closeToolbox.key) Key shortcut used to close the toolbox
+toolbox.closeToolbox.key=CmdOrCtrl+W
+
+# LOCALIZATION NOTE (toolbox.toggleToolbox.key) Key shortcut used to toggle the toolbox
+toolbox.toggleToolbox.key=CmdOrCtrl+Shift+I
+
+# LOCALIZATION NOTE (toolbox.toggleToolboxOSX.key) Key shortcut used to toggle the toolbox
+toolbox.toggleToolboxOSX.key=CmdOrCtrl+Alt+I
+
+# LOCALIZATION NOTE (toolbox.toggleToolboxF12.key) Key shortcut used to toggle the toolbox
+toolbox.toggleToolboxF12.key=F12
+
+# LOCALIZATION NOTE (toolbox.frames.tooltip): This is the label for
+# the iframes menu list that appears only when the document has some.
+# It allows you to switch the context of the whole toolbox.
+toolbox.frames.tooltip=Select an iframe as the currently targeted document
+
+# LOCALIZATION NOTE (toolbox.frames.disabled.tooltip): This is the title
+# displayed as a tooltip of the iframes menu button, when disabled. The button
+# is normally hidden when no frames are available. But if the user is on the
+# DevTools Options panel, the button is always shown for discoverability.
+toolbox.frames.disabled.tooltip=This button is only available on pages with several iframes
+
+# LOCALIZATION NOTE (toolbox.showFrames.key)
+# Key shortcut used to show frames menu when 'frames' button is focused
+toolbox.showFrames.key=Alt+Down
+
+# LOCALIZATION NOTE (toolbox.meatballMenu.button.tooltip): This is the tooltip
+# for the "..." button on the developer tools toolbox.
+toolbox.meatballMenu.button.tooltip=Customise Developer Tools and Get Help
+
+# LOCALIZATION NOTE (toolbox.closebutton.tooltip): This is the tooltip for
+# the close button the developer tools toolbox.
+toolbox.closebutton.tooltip=Close Developer Tools
+
+# LOCALIZATION NOTE (toolbox.errorCountButton.tooltip): This is the tooltip for
+# the error count button displayed in the developer tools toolbox.
+toolbox.errorCountButton.tooltip=Show Split Console
+
+# LOCALIZATION NOTE (toolbox.errorCountButton.description): This is the description that
+# will be used for the error count button in the devTools settings panel.
+toolbox.errorCountButton.description=Show the number of errors on the page
+
+# LOCALIZATION NOTE (toolbox.sourceMapFailure): This is shown in the web console
+# when there is a failure to fetch or parse a source map.
+# The text of the error: %1$S
+# The URL that caused DevTools to try to fetch a source map: %2$S
+# The URL of the source map itself: %3$S
+toolbox.sourceMapFailure=Source map error: %1$S\nResource URL: %2$S\nSource Map URL: %3$S
+
+# LOCALIZATION NOTE (toolbox.sourceMapSourceFailure): This is shown in
+# the web console when there is a failure to fetch or parse an
+# original source that was mentioned in a source map.
+# The text of the error: %1$S
+# The URL of the source: %2$S
+toolbox.sourceMapSourceFailure=Error while fetching an original source: %1$S\nSource URL: %2$S
+
+# LOCALIZATION NOTE (toolbox.debugTargetInfo.runtimeLabel): This is displayed as a toolbox
+# header in about:devtools-toolbox. about:devtools-toolbox is used for instance when
+# inspecting tabs in about:debugging.
+# e.g. Mozilla Fennec (65.0a1)
+# The name of runtime: %1$S
+# The version of runtime: %2$S
+toolbox.debugTargetInfo.runtimeLabel=%1$S (%2$S)
+
+# LOCALIZATION NOTE (toolbox.debugTargetInfo.runtimeLabel.thisRuntime): this is displayed
+# as a toolbox header in about:devtools-toolbox, when inspecting the current Firefox runtime
+# (for instance, when inspecting one of its tabs in about:debugging)
+# e.g. This Firefox (65.0a1)
+# The name of the current runtime/application (brandShorterName): %1$S
+# The version of runtime: %2$S
+toolbox.debugTargetInfo.runtimeLabel.thisRuntime=This %1$S (%2$S)
+
+# LOCALIZATION NOTE (toolbox.debugTargetInfo.tabTitleRemote):
+# Used as the tab title for about:devtools-toolbox when connected to a remote target.
+# The connection type (see toolbox.debugTargetInfo.connection.*): %1$S
+# The target type (see toolbox.debugTargetInfo.targetType.*): %2$S
+# The target name (retrieved from DevTools, eg the extension's name): %3$S
+toolbox.debugTargetInfo.tabTitleRemote=Toolbox (%1$S) - %2$S / %3$S
+
+# LOCALIZATION NOTE (toolbox.debugTargetInfo.tabTitleLocal):
+# Used as the tab title for about:devtools-toolbox when connected to This Firefox.
+# The target type (see toolbox.debugTargetInfo.targetType.*): %1$S
+# The target name (retrieved from DevTools, eg the extension's name): %2$S
+toolbox.debugTargetInfo.tabTitleLocal=Toolbox - %1$S / %2$S
+
+# LOCALIZATION NOTE (toolbox.debugTargetInfo.tabTitleError):
+# Used as the tab title for about:devtools-toolbox when it failed to connect to the
+# target.
+toolbox.debugTargetInfo.tabTitleError=Toolbox - error occurred
+
+# LOCALIZATION NOTE (toolbox.debugTargetInfo.connection.*): This is displayed in the
+# toolbox header in about:devtools-toolbox, to indicate how the connection to the
+# runtime being inspected was made.
+toolbox.debugTargetInfo.connection.usb=USB
+toolbox.debugTargetInfo.connection.network=Network
+
+# LOCALIZATION NOTE (toolbox.debugTargetInfo.reload):
+# Used as the reload button tooltip
+toolbox.debugTargetInfo.reload=Reload
+
+# LOCALIZATION NOTE (toolbox.debugTargetInfo.forward):
+# Used as the navigation's "forward" button tooltip
+toolbox.debugTargetInfo.forward=Forwards
+
+# LOCALIZATION NOTE (toolbox.debugTargetInfo.back):
+# Used as the navigation's "back" button tooltip
+toolbox.debugTargetInfo.back=Backwards
+
+# LOCALIZATION NOTE (toolbox.debugTargetInfo.targetType.*): This is displayed as the
+# alt attribute for an icon in the toolbox header in about:devtools-toolbox,
+# to indicate what is the type of the debug target being inspected.
+toolbox.debugTargetInfo.targetType.extension=Extension
+toolbox.debugTargetInfo.targetType.process=Process
+toolbox.debugTargetInfo.targetType.tab=Tab
+toolbox.debugTargetInfo.targetType.worker=Worker
+
+# LOCALIZATION NOTE (browserToolbox.statusMessage): This is the label
+# shown next to status details when the Browser Toolbox fails to connect or
+# appears to be taking a while to do so.
+browserToolbox.statusMessage=Browser Toolbox connection status:
+
+# LOCALIZATION NOTE (toolbox.debugTargetErrorPage.title): This is the title
+# for the Error view shown by the toolbox when a connection to a debug target
+# could not be made
+toolbox.debugTargetErrorPage.title = Error
+
+# LOCALIZATION NOTE (toolbox.debugTargetErrorPage.description): This is the
+# text that appears in the Error view and explains to the user that an error
+# has happened while trying to connect to a debug target
+toolbox.debugTargetErrorPage.description = Cannot connect to the debug target. See error details below:
+
+# LOCALIZATION NOTE (options.deprecationNotice): This is the text that appears in the
+# settings panel for panel that will be removed in future releases.
+# This entire text is treated as a link to an MDN page.
+options.deprecationNotice=Deprecated. Learn More…
+
+# LOCALIZATION NOTE (options.enableMultiProcessToolbox): This is the text that appears in the
+# settings panel for the checkbox that enables the Multiprocess Browser Toolbox.
+options.enableMultiProcessToolbox=Enable the Multiprocess Browser Toolbox (requires restarting the Browser Toolbox)
diff --git a/l10n-en-GB/devtools/client/tooltips.ftl b/l10n-en-GB/devtools/client/tooltips.ftl
new file mode 100644
index 0000000000..2770348764
--- /dev/null
+++ b/l10n-en-GB/devtools/client/tooltips.ftl
@@ -0,0 +1,101 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+### Localization for Developer Tools tooltips.
+
+learn-more = <span data-l10n-name="link">Learn more</span>
+
+## In the Rule View when a CSS property cannot be successfully applied we display
+## an icon. When this icon is hovered this message is displayed to explain why
+## the property is not applied.
+## Variables:
+##   $property (string) - A CSS property name e.g. "color".
+##   $display (string) - A CSS display value e.g. "inline-block".
+
+inactive-css-not-grid-or-flex-container = <strong>{ $property }</strong> has no effect on this element since it’s neither a flex container nor a grid container.
+inactive-css-not-grid-or-flex-container-or-multicol-container = <strong>{ $property }</strong> has no effect on this element since it’s not a flex container, a grid container, or a multi-column container.
+inactive-css-not-multicol-container = <strong>{ $property }</strong> has no effect on this element since it’s not a multi-column container.
+inactive-css-not-grid-or-flex-item = <strong>{ $property }</strong> has no effect on this element since it’s not a grid or flex item.
+inactive-css-not-grid-item = <strong>{ $property }</strong> has no effect on this element since it’s not a grid item.
+inactive-css-not-grid-container = <strong>{ $property }</strong> has no effect on this element since it’s not a grid container.
+inactive-css-not-flex-item = <strong>{ $property }</strong> has no effect on this element since it’s not a flex item.
+inactive-css-not-flex-container = <strong>{ $property }</strong> has no effect on this element since it’s not a flex container.
+inactive-css-not-inline-or-tablecell = <strong>{ $property }</strong> has no effect on this element since it’s not an inline or table-cell element.
+inactive-css-first-line-pseudo-element-not-supported = <strong>{ $property }</strong> is not supported on ::first-line pseudo-elements.
+inactive-css-first-letter-pseudo-element-not-supported = <strong>{ $property }</strong> is not supported on ::first-letter pseudo-elements.
+inactive-css-placeholder-pseudo-element-not-supported = <strong>{ $property }</strong> is not supported on ::placeholder pseudo-elements.
+inactive-css-property-because-of-display = <strong>{ $property }</strong> has no effect on this element since it has a display of <strong>{ $display }</strong>.
+inactive-css-not-display-block-on-floated = The <strong>display</strong> value has been changed by the engine to <strong>block</strong> because the element is <strong>floated</strong>.
+inactive-css-property-is-impossible-to-override-in-visited = It’s impossible to override <strong>{ $property }</strong> due to <strong>:visited</strong> restriction.
+inactive-css-position-property-on-unpositioned-box = <strong>{ $property }</strong> has no effect on this element since it’s not a positioned element.
+inactive-text-overflow-when-no-overflow = <strong>{ $property }</strong> has no effect on this element since <strong>overflow:hidden</strong> is not set.
+inactive-css-not-for-internal-table-elements = <strong>{ $property }</strong> has no effect on internal table elements.
+inactive-css-not-for-internal-table-elements-except-table-cells = <strong>{ $property }</strong> has no effect on internal table elements except table cells.
+inactive-css-not-table = <strong>{ $property }</strong> has no effect on this element since it’s not a table.
+inactive-css-not-table-cell = <strong>{ $property }</strong> has no effect on this element since it’s not a table cell.
+inactive-scroll-padding-when-not-scroll-container = <strong>{ $property }</strong> has no effect on this element since it doesn’t scroll.
+inactive-css-border-image = <strong>{ $property }</strong> has no effect on this element since it cannot be applied to internal table elements where <strong>border-collapse</strong> is set to <strong>collapse</strong> on the parent table element.
+inactive-css-ruby-element = <strong>{ $property }</strong> has no effect on this element since it is a ruby element. Its size is determined by the font size of the ruby text.
+inactive-css-highlight-pseudo-elements-not-supported = <strong>{ $property }</strong> is not supported on highlight pseudo-elements.
+inactive-css-cue-pseudo-element-not-supported = <strong>{ $property }</strong> is not supported on ::cue pseudo-elements.
+# Variables:
+#   $lineCount (integer) - The number of lines the element has.
+inactive-css-text-wrap-balance-lines-exceeded =
+    { $lineCount ->
+        [one] <strong>{ $property }</strong> has no effect on this element because it has more than { $lineCount } line.
+       *[other] <strong>{ $property }</strong> has no effect on this element because it has more than { $lineCount } lines.
+    }
+inactive-css-text-wrap-balance-fragmented = <strong>{ $property }</strong> has no effect on this element because it is fragmented, i.e. its content is split across multiple columns or pages.
+
+## In the Rule View when a CSS property cannot be successfully applied we display
+## an icon. When this icon is hovered this message is displayed to explain how
+## the problem can be solved.
+
+inactive-css-not-grid-or-flex-container-fix = Try adding <strong>display:grid</strong> or <strong>display:flex</strong>. { learn-more }
+inactive-css-not-grid-or-flex-container-or-multicol-container-fix = Try adding either <strong>display:grid</strong>, <strong>display:flex</strong>, or <strong>columns:2</strong>. { learn-more }
+inactive-css-not-multicol-container-fix = Try adding either <strong>column-count</strong> or <strong>column-width</strong>. { learn-more }
+inactive-css-not-grid-or-flex-item-fix-3 = Try adding <strong>display:grid</strong>, <strong>display:flex</strong>, <strong>display:inline-grid</strong>, or <strong>display:inline-flex</strong> to the element’s parent. { learn-more }
+inactive-css-not-grid-item-fix-2 = Try adding <strong>display:grid</strong> or <strong>display:inline-grid</strong> to the element’s parent. { learn-more }
+inactive-css-not-grid-container-fix = Try adding <strong>display:grid</strong> or <strong>display:inline-grid</strong>. { learn-more }
+inactive-css-not-flex-item-fix-2 = Try adding <strong>display:flex</strong> or <strong>display:inline-flex</strong> to the element’s parent. { learn-more }
+inactive-css-not-flex-container-fix = Try adding <strong>display:flex</strong> or <strong>display:inline-flex</strong>. { learn-more }
+inactive-css-not-inline-or-tablecell-fix = Try adding <strong>display:inline</strong> or <strong>display:table-cell</strong>. { learn-more }
+inactive-css-non-replaced-inline-or-table-row-or-row-group-fix = Try adding <strong>display:inline-block</strong> or <strong>display:block</strong>. { learn-more }
+inactive-css-non-replaced-inline-or-table-column-or-column-group-fix = Try adding <strong>display:inline-block</strong>. { learn-more }
+inactive-css-not-display-block-on-floated-fix = Try removing <strong>float</strong> or adding <strong>display:block</strong>. { learn-more }
+inactive-css-position-property-on-unpositioned-box-fix = Try setting its <strong>position</strong> property to something else than <strong>static</strong>. { learn-more }
+inactive-text-overflow-when-no-overflow-fix = Try adding <strong>overflow:hidden</strong>. { learn-more }
+inactive-css-not-for-internal-table-elements-fix = Try setting its <strong>display</strong> property to something else than <strong>table-cell</strong>, <strong>table-column</strong>, <strong>table-row</strong>, <strong>table-column-group</strong>, <strong>table-row-group</strong>, or <strong>table-footer-group</strong>. { learn-more }
+inactive-css-not-for-internal-table-elements-except-table-cells-fix = Try setting its <strong>display</strong> property to something else than <strong>table-column</strong>, <strong>table-row</strong>, <strong>table-column-group</strong>, <strong>table-row-group</strong>, or <strong>table-footer-group</strong>. { learn-more }
+inactive-css-not-table-fix = Try adding <strong>display:table</strong> or <strong>display:inline-table</strong>. { learn-more }
+inactive-css-not-table-cell-fix = Try adding <strong>display:table-cell</strong>. { learn-more }
+inactive-scroll-padding-when-not-scroll-container-fix = Try adding <strong>overflow:auto</strong>, <strong>overflow:scroll</strong>, or <strong>overflow:hidden</strong>. { learn-more }
+inactive-css-border-image-fix = On the parent table element, remove the property or change the value of <strong>border-collapse</strong> to a value other than <strong>collapse</strong>. { learn-more }
+inactive-css-ruby-element-fix = Try changing the <strong>font-size</strong> of the ruby text. { learn-more }
+inactive-css-text-wrap-balance-lines-exceeded-fix = Try to reduce the number of lines. { learn-more }
+inactive-css-text-wrap-balance-fragmented-fix = Avoid splitting the element’s content e.g. by removing the columns or by using <strong>page-break-inside:avoid</strong>. { learn-more }
+
+## In the Rule View when a CSS property may have compatibility issues with other browsers
+## we display an icon. When this icon is hovered this message is displayed to explain why
+## the property is incompatible and the platforms it is incompatible on.
+## Variables:
+##   $property (string) - A CSS declaration name e.g. "-moz-user-select" that can be a platform specific alias.
+##   $rootProperty (string) - A raw CSS property name e.g. "user-select" that is not a platform specific alias.
+
+css-compatibility-default-message = <strong>{ $property }</strong> is not supported in the following browsers:
+css-compatibility-deprecated-experimental-message = <strong>{ $property }</strong> was an experimental property that is now deprecated by W3C standards. It is not supported in the following browsers:
+css-compatibility-deprecated-experimental-supported-message = <strong>{ $property }</strong> was an experimental property that is now deprecated by W3C standards.
+css-compatibility-deprecated-message = <strong>{ $property }</strong> is deprecated by W3C standards. It is not supported in the following browsers:
+css-compatibility-deprecated-supported-message = <strong>{ $property }</strong> is deprecated by W3C standards.
+css-compatibility-experimental-message = <strong>{ $property }</strong> is an experimental property. It is not supported in the following browsers:
+css-compatibility-experimental-supported-message = <strong>{ $property }</strong> is an experimental property.
+css-compatibility-learn-more-message = <span data-l10n-name="link">Learn more</span> about <strong>{ $rootProperty }</strong>
+
+## In the Rule View when a rule selector can causes issues, we display an icon.
+## When this icon is hovered one or more of those messages are displayed to explain what
+## the issue are.
+
+# :has() should not be translated
+css-selector-warning-unconstrained-has = This selector uses unconstrained <strong>:has()</strong>, which can be slow
diff --git a/l10n-en-GB/devtools/client/webconsole.properties b/l10n-en-GB/devtools/client/webconsole.properties
new file mode 100644
index 0000000000..e9b30b53c9
--- /dev/null
+++ b/l10n-en-GB/devtools/client/webconsole.properties
@@ -0,0 +1,605 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+# LOCALIZATION NOTE
+# The correct localization of this file might be to keep it in
+# English, or another language commonly spoken among web developers.
+# You want to make that choice consistent across the developer tools.
+# A good criteria is the language in which you'd find the best
+# documentation on web development on the web.
+
+# LOCALIZATION NOTE (multiProcessBrowserConsole.title): Title of the Browser
+# Console window when the pref `devtools.browsertoolbox.scope` is set to "everything". This
+# Browser Console will log messages from all processes, not just the the parent
+# process.
+multiProcessBrowserConsole.title=Multiprocess Browser Console
+
+# LOCALIZATION NOTE (parentProcessBrowserConsole.title): Title used for
+# the Browser Console when the pref `devtools.browsertoolbox.scope` is set to "parent-process".
+parentProcessBrowserConsole.title=Parent process Browser Console
+
+# LOCALIZATION NOTE (timestampFormat): %1$02S = hours (24-hour clock),
+# %2$02S = minutes, %3$02S = seconds, %4$03S = milliseconds.
+timestampFormat=%02S:%02S:%02S.%03S
+
+ConsoleAPIDisabled=The Web Console logging API (console.log, console.info, console.warn, console.error) has been disabled by a script on this page.
+
+# LOCALIZATION NOTE (webConsoleXhrIndicator): the indicator displayed before
+# a URL in the Web Console that was requested using an XMLHttpRequest.
+webConsoleXhrIndicator=XHR
+
+# LOCALIZATION NOTE (webConsoleMoreInfoLabel): the more info tag displayed
+# after security related web console messages.
+webConsoleMoreInfoLabel=Learn More
+
+# LOCALIZATION NOTE (stacktrace.anonymousFunction): this string is used to
+# display JavaScript functions that have no given name - they are said to be
+# anonymous. Test console.trace() in the webconsole.
+stacktrace.anonymousFunction=<anonymous>
+
+# LOCALIZATION NOTE (stacktrace.asyncStack): this string is used to
+# indicate that a given stack frame has an async parent.
+# %S is the "Async Cause" of the frame.
+stacktrace.asyncStack=(Async: %S)
+
+# LOCALIZATION NOTE (timeLog): this string is used to display the result of
+# the console.timeLog() call. Parameters: %1$S is the name of the timer, %2$S
+# is the number of milliseconds.
+timeLog=%1$S: %2$Sms
+
+# LOCALIZATION NOTE (console.timeEnd): this string is used to display the result of
+# the console.timeEnd() call. Parameters: %1$S is the name of the timer, %2$S
+# is the number of milliseconds.
+console.timeEnd=%1$S: %2$Sms - timer ended
+
+# LOCALIZATION NOTE (consoleCleared): this string is displayed when receiving a
+# call to console.clear() to let the user know the previous messages of the
+# console have been removed programmatically.
+consoleCleared=Console was cleared.
+
+# LOCALIZATION NOTE (preventedConsoleClear): this string is displayed when receiving a
+# call to console.clear() when the user has the "Persist logs" option enabled, to let the
+# user know the console method call was ignored.
+# "Persist Logs" should be kept in sync with webconsole.console.settings.menu.item.enablePersistentLogs.label
+preventedConsoleClear=console.clear() was prevented due to “Persist Logs”
+
+# LOCALIZATION NOTE (noCounterLabel): this string is used to display
+# count-messages with no label provided.
+noCounterLabel=<no label>
+
+# LOCALIZATION NOTE (counterDoesntExist): this string is displayed when
+# console.countReset() is called with a counter that doesn't exist.
+counterDoesntExist=Counter “%S” doesn’t exist.
+
+# LOCALIZATION NOTE (noGroupLabel): this string is used to display
+# console.group messages with no label provided.
+noGroupLabel=<no group label>
+
+maxTimersExceeded=The maximum allowed number of timers in this page was exceeded.
+timerAlreadyExists=Timer “%S” already exists.
+timerDoesntExist=Timer “%S” doesn’t exist.
+timerJSError=Failed to process the timer name.
+
+# LOCALIZATION NOTE (connectionTimeout): message displayed when the Remote Web
+# Console fails to connect to the server due to a timeout.
+connectionTimeout=Connection timeout. Check the Error Console on both ends for potential error messages. Reopen the Web Console to try again.
+
+# LOCALIZATION NOTE (propertiesFilterPlaceholder): this is the text that
+# appears in the filter text box for the properties view container.
+propertiesFilterPlaceholder=Filter properties
+
+# LOCALIZATION NOTE (messageRepeats.tooltip2): the tooltip text that is displayed
+# when you hover the red bubble that shows how many times a message is repeated
+# in the web console output.
+# This is a semi-colon list of plural forms.
+# See: http://developer.mozilla.org/en/docs/Localization_and_Plurals
+# #1 number of message repeats
+# example: 3 repeats
+messageRepeats.tooltip2=#1 repeat;#1 repeats
+
+# LOCALIZATION NOTE (openNodeInInspector): the text that is displayed in a
+# tooltip when hovering over the inspector icon next to a DOM Node in the console
+# output
+openNodeInInspector=Click to select the node in the inspector
+
+# LOCALIZATION NOTE (selfxss.msg): the text that is displayed when
+# a new user of the developer tools pastes code into the console
+# %1 is the text of selfxss.okstring
+selfxss.msg=Scam Warning: Take care when pasting things you don’t understand. This could allow attackers to steal your identity or take control of your computer. Please type ‘%S’ below (no need to press enter) to allow pasting.
+
+# LOCALIZATION NOTE (selfxss.okstring): the string to be typed
+# in by a new user of the developer tools when they receive the sefxss.msg prompt.
+# Please avoid using non-keyboard characters here
+selfxss.okstring=allow pasting
+
+# LOCALIZATION NOTE (evaluationNotifcation.noOriginalVariableMapping.msg): the text for the notification message that is displayed
+# in the console when  the debugger is paused in a non-pretty printed original file and original variable mapping is turned off.
+# `Show original variables` should be kept in sync with the checkbox label in the Scopes panel header.
+evaluationNotifcation.noOriginalVariableMapping.msg=Original variables name mapping in the debugger is disabled. Evaluation results might not be accurate. Click the `Show original variables` tickbox in the debugger scopes panel to enable.
+
+# LOCALIZATION NOTE (messageToggleDetails): the text that is displayed when
+# you hover the arrow for expanding/collapsing the message details. For
+# console.error() and other messages we show the stacktrace.
+messageToggleDetails=Show/hide message details.
+
+# LOCALIZATION NOTE (groupToggle): the text that is displayed when
+# you hover the arrow for expanding/collapsing the messages of a group.
+groupToggle=Show/hide group.
+
+# LOCALIZATION NOTE (table.index, table.iterationIndex, table.key, table.value):
+# the column header displayed in the console table widget.
+table.index=(index)
+table.iterationIndex=(iteration index)
+table.key=Key
+table.value=Values
+
+# LOCALIZATION NOTE (level.error, level.warn, level.info, level.log, level.debug, level.jstracer):
+# tooltip for icons next to console output.
+# "level.jstracer" isn't related to console.api call, but rather to the JavaScript Tracer,
+# each item represents a function call being logged in the console.
+level.error=Error
+level.warn=Warning
+level.info=Info
+level.log=Log
+level.debug=Debug
+
+level.jstracer=Function call
+
+# LOCALIZATION NOTE (logpoint.title)
+# Tooltip shown for logpoints sent from the debugger
+logpoint.title=Logpoints from the debugger
+
+# LOCALIZATION NOTE (logtrace.title)
+# Tooltip shown for JavaScript tracing logs
+logtrace.title=JavaScript tracing
+
+# LOCALIZATION NOTE (blockedReason.title)
+# Tooltip shown for blocked network events sent from the network panel
+blockedrequest.label=Blocked by DevTools
+
+# LOCALIZATION NOTE (webconsole.disableIcon.title)
+# Tooltip shown for disabled console messages
+webconsole.disableIcon.title=This message is no longer active, message details are not available
+
+# LOCALIZATION NOTE (command.title)
+# Tooltip shown for console input evaluated code displayed in the console output
+command.title=Evaluated code
+
+# LOCALIZATION NOTE (result.title)
+# Tooltip shown for evaluation result displayed in the console output
+result.title=Evaluation result
+
+# LOCALIZATION NOTE (webconsole.find.key)
+# Key shortcut used to focus the search box on upper right of the console
+webconsole.find.key=CmdOrCtrl+F
+
+# LOCALIZATION NOTE (webconsole.close.key)
+# Key shortcut used to close the Browser console (doesn't work in regular web console)
+webconsole.close.key=CmdOrCtrl+W
+
+# LOCALIZATION NOTE (webconsole.clear.key*)
+# Key shortcut used to clear the console output
+webconsole.clear.key=Ctrl+Shift+L
+webconsole.clear.keyOSX=Ctrl+L
+webconsole.clear.alternativeKeyOSX=Cmd+K
+
+# LOCALIZATION NOTE (webconsole.menu.copyURL.label)
+# Label used for a context-menu item displayed for network message logs. Clicking on it
+# copies the URL displayed in the message to the clipboard.
+webconsole.menu.copyURL.label=Copy Link Location
+webconsole.menu.copyURL.accesskey=a
+
+# LOCALIZATION NOTE (webconsole.menu.openURL.label)
+# Label used for a context-menu item displayed for network message logs. Clicking on it
+# opens the URL displayed in a new browser tab.
+webconsole.menu.openURL.label=Open URL in New Tab
+webconsole.menu.openURL.accesskey=T
+
+# LOCALIZATION NOTE (webconsole.menu.openInNetworkPanel.label)
+# Label used for a context-menu item displayed for network message logs. Clicking on it
+# opens the network message in the Network panel
+webconsole.menu.openInNetworkPanel.label=Open in Network Panel
+webconsole.menu.openInNetworkPanel.accesskey=N
+
+# LOCALIZATION NOTE (webconsole.menu.resendNetworkRequest.label)
+# Label used for a context-menu item displayed for network message logs. Clicking on it
+# resends the network request
+webconsole.menu.resendNetworkRequest.label=Resend Request
+webconsole.menu.resendNetworkRequest.accesskey=n
+
+# LOCALIZATION NOTE (webconsole.menu.openNodeInInspector.label)
+# Label used for a context-menu item displayed for DOM Node logs. Clicking on it will
+# reveal that specific DOM Node in the Inspector.
+webconsole.menu.openNodeInInspector.label=Reveal in Inspector
+webconsole.menu.openNodeInInspector.accesskey=Q
+
+# LOCALIZATION NOTE (webconsole.menu.storeAsGlobalVar.label)
+# Label used for a context-menu item displayed for object/variable logs. Clicking on it
+# creates a new global variable pointing to the logged variable.
+webconsole.menu.storeAsGlobalVar.label=Store as Global Variable
+webconsole.menu.storeAsGlobalVar.accesskey=S
+
+# LOCALIZATION NOTE (webconsole.menu.copyMessage.label)
+# Label used for a context-menu item displayed for any log. Clicking on it will copy the
+# content of the log (or the user selection, if any).
+webconsole.menu.copyMessage.label=Copy Message
+webconsole.menu.copyMessage.accesskey=C
+
+# LOCALIZATION NOTE (webconsole.menu.copyObject.label)
+# Label used for a context-menu item displayed for object/variable log. Clicking on it
+# will copy the object/variable.
+webconsole.menu.copyObject.label=Copy Object
+webconsole.menu.copyObject.accesskey=o
+
+# LOCALIZATION NOTE (webconsole.menu.openInSidebar.label)
+# Label used for a context-menu item displayed for object/variable logs. Clicking on it
+# opens the webconsole sidebar for the logged variable.
+webconsole.menu.openInSidebar.label1=Inspect object in Sidebar
+webconsole.menu.openInSidebar.accesskey=V
+
+# LOCALIZATION NOTE (webconsole.menu.copyAllMessages.label)
+# Label used for a context-menu item displayed on the output. Clicking on it
+# copies the entire output of the console to the clipboard.
+webconsole.menu.copyAllMessages.label=Copy all Messages
+webconsole.menu.copyAllMessages.accesskey=M
+
+# LOCALIZATION NOTE (webconsole.menu.saveAllMessagesFile.label)
+# Label used for a context-menu item displayed on the output. Clicking on it
+# opens a file picker to allow the user save a file containing
+# the output of the console.
+webconsole.menu.saveAllMessagesFile.label=Save all Messages to File
+webconsole.menu.saveAllMessagesFile.accesskey=F
+
+# LOCALIZATION NOTE (webconsole.clearButton.tooltip)
+# Label used for the tooltip on the clear logs button in the console top toolbar bar.
+# Clicking on it will clear the content of the console.
+webconsole.clearButton.tooltip=Clear the Web Console output
+
+# LOCALIZATION NOTE (webconsole.toggleFilterButton.tooltip)
+# Label used for the tooltip on the toggle filter bar button in the console top
+# toolbar bar. Clicking on it will toggle the visibility of an additional bar which
+# contains filter buttons.
+webconsole.toggleFilterButton.tooltip=Toggle filter bar
+
+# LOCALIZATION NOTE (webconsole.filterInput.placeholder)
+# Label used for for the placeholder on the filter input, in the console top toolbar.
+webconsole.filterInput.placeholder=Filter Output
+
+# LOCALIZATION NOTE (webconsole.errorsFilterButton.label)
+# Label used as the text of the "Errors" button in the additional filter toolbar.
+# It shows or hides error messages, either inserted in the page using
+# console.error() or as a result of a javascript error..
+webconsole.errorsFilterButton.label=Errors
+
+# LOCALIZATION NOTE (webconsole.warningsFilterButton.label)
+# Label used as the text of the "Warnings" button in the additional filter toolbar.
+# It shows or hides warning messages, inserted in the page using console.warn().
+webconsole.warningsFilterButton.label=Warnings
+
+# LOCALIZATION NOTE (webconsole.logsFilterButton.label)
+# Label used as the text of the "Logs" button in the additional filter toolbar.
+# It shows or hides log messages, inserted in the page using console.log().
+webconsole.logsFilterButton.label=Logs
+
+# LOCALIZATION NOTE (webconsole.infoFilterButton.label)
+# Label used as the text of the "Info" button in the additional filter toolbar.
+# It shows or hides info messages, inserted in the page using console.info().
+webconsole.infoFilterButton.label=Info
+
+# LOCALIZATION NOTE (webconsole.debugFilterButton.label)
+# Label used as the text of the "Debug" button in the additional filter toolbar.
+# It shows or hides debug messages, inserted in the page using console.debug().
+webconsole.debugFilterButton.label=Debug
+
+# LOCALIZATION NOTE (webconsole.cssFilterButton.label)
+# Label used as the text of the "CSS" button in the additional filter toolbar.
+# It shows or hides CSS warning messages, inserted in the page by the browser
+# when there are CSS errors in the page.
+webconsole.cssFilterButton.label=CSS
+
+# LOCALIZATION NOTE (webconsole.cssFilterButton.inactive.tooltip)
+# Label used as the tooltip of the "CSS" button in the additional filter toolbar, when the
+# filter is inactive (=unchecked).
+webconsole.cssFilterButton.inactive.tooltip=Stylesheets will be re-parsed to check for errors. Refresh the page to also see errors from stylesheets modified from JavaScript.
+
+# LOCALIZATION NOTE (webconsole.xhrFilterButton.label)
+# Label used as the text of the "XHR" button in the additional filter toolbar.
+# It shows or hides messages displayed when the page makes an XMLHttpRequest or
+# a fetch call.
+webconsole.xhrFilterButton.label=XHR
+
+# LOCALIZATION NOTE (webconsole.requestsFilterButton.label)
+# Label used as the text of the "Requests" button in the additional filter toolbar.
+# It shows or hides messages displayed when the page makes a network call, for example
+# when an image or a scripts is requested.
+webconsole.requestsFilterButton.label=Requests
+
+# LOCALIZATION NOTE (webconsole.filteredMessagesByText.label)
+# Text on the filter input displayed when some console messages are hidden because the
+# user has filled in the input.
+# This is a semi-colon list of plural forms.
+# See: http://developer.mozilla.org/en/docs/Localization_and_Plurals
+# example: 345 hidden.
+webconsole.filteredMessagesByText.label=#1 hidden;#1 hidden
+
+# LOCALIZATION NOTE (webconsole.filteredMessagesByText.tooltip)
+# Tooltip on the filter input "hidden" text, displayed when some console messages are
+# hidden because the user has filled in the input.
+# This is a semi-colon list of plural forms.
+# See: http://developer.mozilla.org/en/docs/Localization_and_Plurals
+# example: 345 items hidden by text filter.
+webconsole.filteredMessagesByText.tooltip=#1 item hidden by text filter;#1 items hidden by text filter
+
+# LOCALIZATION NOTE (webconsole.console.settings.menu.menuButton.tooltip)
+# Tooltip for the filter bar preferences menu. This menu will display multiple perefences for the
+# filter bar, such as enabling the compact toolbar mode, enable the timestamps, persist logs, etc
+webconsole.console.settings.menu.button.tooltip=Console Settings
+
+# LOCALIZATION NOTE (webconsole.console.settings.menu.item.compactToolbar.label)
+# Label for the `Compact Toolbar` preference option. This will turn the message filters buttons
+# into a Menu Button, making the filter bar more compact.
+webconsole.console.settings.menu.item.compactToolbar.label=Compact Toolbar
+
+# LOCALIZATION NOTE (webconsole.console.settings.menu.item.timestamps.label)
+# Label for enabling the timestamps in the Web Console.
+webconsole.console.settings.menu.item.timestamps.label=Show Timestamps
+# LOCALIZATION NOTE (webconsole.console.settings.menu.item.timestamps.tooltip)
+webconsole.console.settings.menu.item.timestamps.tooltip=If you enable this option commands and output in the Web Console will display a timestamp
+
+# LOCALIZATION NOTE (webconsole.console.settings.menu.item.warningGroups.label)
+# Label for grouping the similar messages in the Web Console
+webconsole.console.settings.menu.item.warningGroups.label=Group Similar Messages
+# LOCALIZATION NOTE (webconsole.console.settings.menu.item.warningGroups.tooltip)
+webconsole.console.settings.menu.item.warningGroups.tooltip=When enabled, similar messages are placed into groups
+
+# LOCALIZATION NOTE (webconsole.console.settings.menu.item.autocomplete.label)
+# Label for enabling autocomplete for input in the Web Console
+webconsole.console.settings.menu.item.autocomplete.label=Enable Autocompletion
+# LOCALIZATION NOTE (webconsole.console.settings.menu.item.autocomplete.tooltip)
+webconsole.console.settings.menu.item.autocomplete.tooltip=If you enable this option the input will display suggestions as you type in it
+
+# LOCALIZATION NOTE (webconsole.console.settings.menu.item.enablePersistentLogs.label)
+webconsole.console.settings.menu.item.enablePersistentLogs.label=Persist Logs
+# LOCALIZATION NOTE (webconsole.console.settings.menu.item.enablePersistentLogs.tooltip)
+webconsole.console.settings.menu.item.enablePersistentLogs.tooltip=If you enable this option the output will not be cleared each time you navigate to a new page
+
+# LOCALIZATION NOTE (webconsole.console.settings.menu.item.instantEvaluation.label)
+webconsole.console.settings.menu.item.instantEvaluation.label=Instant Evaluation
+# LOCALIZATION NOTE (webconsole.console.settings.menu.item.instantEvaluation.tooltip)
+webconsole.console.settings.menu.item.instantEvaluation.tooltip=If you enable this option the input will be instantly evaluated as you type in it
+
+# LOCALIZATION NOTE (browserconsole.enableNetworkMonitoring.label)
+# Label used in the browser console / browser toolbox console. This label is used for a checkbox that
+# allows the user enable monitoring of network requests.
+browserconsole.enableNetworkMonitoring.label=Enable Network Monitoring
+# LOCALIZATION NOTE (browserconsole.enableNetworkMonitoring.tooltip)
+# Tooltip for the "Enable Network Monitoring" check item.
+browserconsole.enableNetworkMonitoring.tooltip=Enable this to start listening to network requests
+
+# LOCALIZATION NOTE (webconsole.navigated): this string is used in the console when the
+# current inspected page is navigated to a new location.
+# Parameters: %S is the new URL.
+webconsole.navigated=Navigated to %S
+
+# LOCALIZATION NOTE (webconsole.closeSplitConsoleButton.tooltip): This is the tooltip for
+# the close button of the split console.
+webconsole.closeSplitConsoleButton.tooltip=Close Split Console (Esc)
+
+# LOCALIZATION NOTE (webconsole.closeSidebarButton.tooltip): This is the tooltip for
+# the close button of the sidebar.
+webconsole.closeSidebarButton.tooltip=Close Sidebar
+
+# LOCALIZATION NOTE (webconsole.reverseSearch.input.placeHolder):
+# This string is displayed in the placeholder of the reverse search input in the console.
+webconsole.reverseSearch.input.placeHolder=Search history
+
+# LOCALIZATION NOTE (webconsole.reverseSearch.result.closeButton.tooltip):
+# This string is displayed in the tooltip of the close button in the reverse search toolbar.
+# A keyboard shortcut will be shown inside the latter pair of brackets.
+webconsole.reverseSearch.closeButton.tooltip=Close (%S)
+
+# LOCALIZATION NOTE (webconsole.reverseSearch.results):
+# This string is displayed in the reverse search UI when there are at least one result
+# to the search.
+# This is a semi-colon list of plural forms.
+# See: http://developer.mozilla.org/en/docs/Localization_and_Plurals
+# #1 index of current search result displayed.
+# #2 total number of search results.
+webconsole.reverseSearch.results=#2 result;#1 of #2 results
+
+# LOCALIZATION NOTE (webconsole.reverseSearch.noResult):
+# This string is displayed in the reverse search UI when there is no results to the search.
+webconsole.reverseSearch.noResult=No results
+
+# LOCALIZATION NOTE (webconsole.reverseSearch.result.previousButton.tooltip):
+# This string is displayed in the tooltip of the "previous result" button in the reverse search toolbar.
+# A keyboard shortcut will be shown inside the latter pair of brackets.
+webconsole.reverseSearch.result.previousButton.tooltip=Previous result (%S)
+
+# LOCALIZATION NOTE (webconsole.reverseSearch.result.nextButton.tooltip):
+# This string is displayed in the tooltip of the "next result" button in the reverse search toolbar.
+# A keyboard shortcut will be shown inside the latter pair of brackets.
+webconsole.reverseSearch.result.nextButton.tooltip=Next result (%S)
+
+# LOCALIZATION NOTE (webconsole.confirmDialog.getter.label)
+# Label used for the "invoke getter" confirm dialog that appears in the console when
+# a user tries to autocomplete a property with a getter.
+# Example: given the following object `x = {get y() {}}`, when the user types `x.y.`, it
+# would return "Invoke getter y to retrieve the property list?".
+# Parameters: %S is the name of the getter.
+webconsole.confirmDialog.getter.label=Invoke getter %S to retrieve the property list?
+
+# LOCALIZATION NOTE (webconsole.confirmDialog.getter.invokeButtonLabelWithShortcut)
+# Label used for the confirm button in the "invoke getter" dialog that appears in the
+# console when a user tries to autocomplete a property with a getter.
+# A keyboard shortcut will be shown inside the latter pair of brackets.
+webconsole.confirmDialog.getter.invokeButtonLabelWithShortcut=Invoke (%S)
+
+# LOCALIZATION NOTE (webconsole.confirmDialog.getter.closeButton.tooltip)
+# Label used as the tooltip for the close  button in the "invoke getter" dialog that
+# appears in the console when a user tries to autocomplete a property with a getter.
+# A keyboard shortcut will be shown inside the latter pair of brackets.
+webconsole.confirmDialog.getter.closeButton.tooltip=Close (%S)
+
+# LOCALIZATION NOTE (webconsole.cssWarningElements.label)
+# Label for the list of HTML elements matching the selector associated
+# with the CSS warning. Parameters: %S is the CSS selector.
+webconsole.cssWarningElements.label=Elements matching selector: %S
+
+# LOCALIZATION NOTE (webconsole.message.componentDidCatch.label)
+# Label displayed when the webconsole couldn't handle a given packet.
+# Parameters: %S is the URL to file a bug about the error.
+webconsole.message.componentDidCatch.label=[DEVTOOLS ERROR] We’re sorry, we couldn’t render the message. This shouldn’t have happened - please file a bug at %S with the message metadata in the description.
+
+# LOCALIZATION NOTE (webconsole.message.commands.copyValueToClipboard)
+# Label displayed when the string is copied to the clipboard as a result of a copy command,
+# in the console, for example, copy({hello: "world"}).
+webconsole.message.commands.copyValueToClipboard=String was copied to clipboard.
+
+# LOCALIZATION NOTE (webconsole.message.commands.startTracingToWebConsole)
+# Label displayed when :trace command was executed and the JavaScript tracer started to log to the web console.
+webconsole.message.commands.startTracingToWebConsole=Started tracing to Web Console
+
+# LOCALIZATION NOTE (webconsole.message.commands.startTracingToStdout)
+# Label displayed when :trace command was executed and the JavaScript tracer started to log to stdout.
+webconsole.message.commands.startTracingToStdout=Started tracing to stdout
+
+# LOCALIZATION NOTE (webconsole.message.commands.startTracingToProfiler)
+# Label displayed when :trace command was executed and the JavaScript tracer will open the profiler showing all the traces,
+# but only on stop.
+webconsole.message.commands.startTracingToProfiler=Started tracing to the Profiler. The traces will be displayed in the profiler on stop.
+
+# LOCALIZATION NOTE (webconsole.message.commands.stopTracing)
+# Label displayed when :trace command was executed and the JavaScript tracer stopped.
+webconsole.message.commands.stopTracing=Stopped tracing
+
+# LOCALIZATION NOTE (webconsole.error.commands.copyError):
+# the error that is displayed when the "copy" command can't stringify an object
+# "copy" should not be translated, because is a function name.
+# Parameters: %S is the original error message
+webconsole.error.commands.copyError=`copy` command failed, object can’t be stringified: %S
+
+# LOCALIZATION NOTE (webconsole.message.commands.blockedUR)
+# Label displayed when the :block <url> command is successful
+# Parameters: %S is the URL filter
+webconsole.message.commands.blockedURL=Requests to URL containing “%S” are now blocked
+
+# LOCALIZATION NOTE (webconsole.message.commands.unblockedURL)
+# Label displayed when the :unblock <url> command is successful
+# Parameters: %S is the URL filter
+webconsole.message.commands.unblockedURL=Removed blocking filter “%S”
+
+# LOCALIZATION NOTE (webconsole.messages.commands.blockArgMissing)
+# Message displayed when no filter is passed to block/unblock command
+webconsole.messages.commands.blockArgMissing=No filter was specified
+
+# LOCALIZATION NOTE (webconsole.message.componentDidCatch.copyButton.label)
+# Label displayed on the button next to the message we display when the webconsole
+# couldn't handle a given packet (See webconsole.message.componentDidCatch.label).
+webconsole.message.componentDidCatch.copyButton.label=Copy message metadata to clipboard
+
+
+# LOCALIZATION NOTE (webconsole.editor.toolbar.executeButton.label)
+# Label used for the text of the execute button, in the editor toolbar, which is
+# displayed when the editor mode is enabled (devtools.webconsole.input.editor=true).
+webconsole.editor.toolbar.executeButton.label=Run
+
+# LOCALIZATION NOTE (webconsole.editor.toolbar.reverseSearchButton.openReverseSearch.tooltip)
+# Label used for the tooltip on the reverse search button for opening the Reverse Search UI.
+# The Reverse Search is a feature that mimics the bash-like reverse search of
+# command history in WebConsole, searching commands from the last item backwards.
+# Parameters: %S is the keyboard shortcut.
+webconsole.editor.toolbar.reverseSearchButton.openReverseSearch.tooltip=Open History Reverse Search (%S)
+
+# LOCALIZATION NOTE (webconsole.editor.toolbar.reverseSearchButton.closeReverseSearch.tooltip)
+# Label used for the tooltip on the reverse search button for closing the Reverse Search UI.
+# The Reverse Search is a feature that mimics the bash-like reverse search of
+# command history in WebConsole, searching commands from the last item backwards.
+# Parameters: %S is the keyboard shortcut.
+webconsole.editor.toolbar.reverseSearchButton.closeReverseSearch.tooltip=Close History Reverse Search (%S)
+
+# LOCALIZATION NOTE (webconsole.editor.toolbar.executeButton.tooltip)
+# Label used for the tooltip on the execute button, in the editor toolbar, which is
+# displayed when the editor mode is enabled (devtools.webconsole.input.editor=true).
+# Parameters: %S is the keyboard shortcut.
+webconsole.editor.toolbar.executeButton.tooltip=Run expression (%S). This won’t clear the input.
+
+# LOCALIZATION NOTE (webconsole.editor.toolbar.prettyPrintButton.tooltip)
+# Label used for the tooltip on the prettyPrint button, in the editor toolbar, which is
+# displayed when the editor mode is enabled (devtools.webconsole.input.editor=true).
+webconsole.editor.toolbar.prettyPrintButton.tooltip=Pretty print expression
+
+# LOCALIZATION NOTE (webconsole.editor.toolbar.executeButton.tooltip)
+# Label used for the tooltip on the history previous expression, in the editor toolbar,
+# which is displayed when the editor mode is enabled (devtools.webconsole.input.editor=true).
+webconsole.editor.toolbar.history.prevExpressionButton.tooltip=Previous Expression
+
+
+# LOCALIZATION NOTE (webconsole.editor.toolbar.executeButton.tooltip)
+# Label used for the tooltip on the history next expression, in the editor toolbar,
+# which is displayed when the editor mode is enabled (devtools.webconsole.input.editor=true).
+webconsole.editor.toolbar.history.nextExpressionButton.tooltip=Next Expression
+
+# LOCALIZATION NOTE (webconsole.editor.toolbar.closeButton.tooltip2)
+# Label used for the tooltip on the close button, in the editor toolbar, which is
+# displayed when the editor mode is enabled (devtools.webconsole.input.editor=true).
+# Parameters: %S is the keyboard shortcut.
+webconsole.editor.toolbar.closeButton.tooltip2=Switch back to inline mode (%S)
+
+# LOCALIZATION NOTE (webconsole.input.openEditorButton.tooltip2)
+# Label used for the tooltip on the open editor button, in console input, which is
+# displayed when the console is in regular mode.
+# Parameters: %S is the keyboard shortcut.
+webconsole.input.openEditorButton.tooltip2=Switch to multi-line editor mode (%S)
+
+# LOCALIZATION NOTE (webconsole.warningGroup.messageCount.tooltip): the tooltip text
+# displayed when you hover a warning group badge (i.e. repeated warning messages for a
+# given category, for example Content Blocked messages) in the web console output.
+# This is a semi-colon list of plural forms.
+# See: http://developer.mozilla.org/en/docs/Localization_and_Plurals
+# #1 number of message in the group.
+# example: 3 messages
+webconsole.warningGroup.messageCount.tooltip=#1 message;#1 messages
+
+# LOCALIZATION NOTE (webconsole.input.editor.onboarding.label): the text that is displayed
+# when displaying the multiline-input mode for the first time, until the user dismiss the
+# text.
+# Parameters: %1$S is Enter key, %2$S is the shortcut to evaluate the expression (
+# Ctrl+Enter or Cmd+Enter on OSX).
+webconsole.input.editor.onboarding.label=Iterate on your code faster with the new multi-line editor mode. Use %1$S to add new lines and %2$S to run.
+
+# LOCALIZATION NOTE (webconsole.input.editor.onboarding.dismiss.label): the text that is
+# displayed in the multiline-input mode onboarding UI to dismiss it.
+webconsole.input.editor.onboarding.dismiss.label=Got it!
+
+# LOCALIZATION NOTE (webconsole.enterKey): The text that will be used to represent the
+# Enter key in the editor onboarding UI, as well as on the Editor toolbar "Run" button
+# tooltip.
+webconsole.enterKey=Enter
+
+# LOCALIZATION NOTE (webconsole.input.openJavaScriptFile): This is a label
+# used for opening a file in the console input (Ctrl+O or Cmd+O on OSX while
+# being focused on the input).
+webconsole.input.openJavaScriptFile=Open JavaScript File
+
+# LOCALIZATION NOTE (webconsole.input.openJavaScriptFileFilter):
+# This string is displayed as a filter when opening a file in the console input.
+webconsole.input.openJavaScriptFileFilter=JavaScript Files
+
+# LOCALIZATION NOTE (webconsole.input.selector.top): This is the term used
+# to describe the primary thread of execution in the page
+webconsole.input.selector.top=Top
+
+# LOCALIZATION NOTE (webconsole.input.selector.tooltip): This is the tooltip
+# shown when users select a thread that they want to evaluate an
+# expression for.
+webconsole.input.selector.tooltip=Select evaluation context
+
+# LOCALIZATION NOTE (webconsole.group.cookieSameSiteLaxByDefaultEnabled2): do not translate 'SameSite'.
+webconsole.group.cookieSameSiteLaxByDefaultEnabled2=Some cookies are misusing the “SameSite“ attribute, so it won’t work as expected
+# LOCALIZATION NOTE (webconsole.group.cookieSameSiteLaxByDefaultDisabled2): do not translate 'SameSite'.
+webconsole.group.cookieSameSiteLaxByDefaultDisabled2=Some cookies are misusing the recommended “SameSite“ attribute
+
+# LOCALIZATION NOTE (webconsole.group.csp): do not translate
+# 'Content-Security-Policy', as that's the name of the header.
+webconsole.group.csp=Content-Security-Policy warnings
diff --git a/l10n-en-GB/devtools/shared/accessibility.properties b/l10n-en-GB/devtools/shared/accessibility.properties
new file mode 100644
index 0000000000..9b870d33c5
--- /dev/null
+++ b/l10n-en-GB/devtools/shared/accessibility.properties
@@ -0,0 +1,142 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# LOCALIZATION NOTE (accessibility.contrast.ratio): A title text for the color contrast
+# ratio description, used by the accessibility highlighter to display the value. %S in the
+# content will be replaced by the contrast ratio numerical value.
+accessibility.contrast.ratio=Contrast: %S
+
+# LOCALIZATION NOTE (accessibility.contrast.ratio.error): A title text for the color
+# contrast ratio, used when the tool is unable to calculate the contrast ratio value.
+accessibility.contrast.ratio.error=Unable to calculate
+
+# LOCALIZATION NOTE (accessibility.contrast.ratio.label): A title text for the color
+# contrast ratio description, used together with the actual values.
+accessibility.contrast.ratio.label=Contrast:
+
+# LOCALIZATION NOTE (accessibility.contrast.ratio.label.large): A title text for the color
+# contrast ratio description that also specifies that the color contrast criteria used is
+# if for large text.
+accessibility.contrast.ratio.label.large=Contrast (large text):
+
+# LOCALIZATION NOTE (accessibility.text.label.issue.area): A title text that
+# describes that currently selected accessible object for an <area> element must have
+# its name provided via the alt attribute.
+accessibility.text.label.issue.area = Use “alt” attribute to label “area” elements that have the “href” attribute.
+
+# LOCALIZATION NOTE (accessibility.text.label.issue.dialog): A title text that
+# describes that currently selected accessible object for a dialog should have a name
+# provided.
+accessibility.text.label.issue.dialog = Dialogues should be labelled.
+
+# LOCALIZATION NOTE (accessibility.text.label.issue.document.title): A title text that
+# describes that currently selected accessible object for a document must have a name
+# provided via title.
+accessibility.text.label.issue.document.title = Documents must have a title.
+
+# LOCALIZATION NOTE (accessibility.text.label.issue.embed): A title text that
+# describes that currently selected accessible object for an <embed> must have a name
+# provided.
+accessibility.text.label.issue.embed = Embedded content must be labelled.
+
+# LOCALIZATION NOTE (accessibility.text.label.issue.figure): A title text that
+# describes that currently selected accessible object for a figure should have a name
+# provided.
+accessibility.text.label.issue.figure = Figures with optional captions should be labelled.
+
+# LOCALIZATION NOTE (accessibility.text.label.issue.fieldset): A title text that
+# describes that currently selected accessible object for a <fieldset> must have a name
+# provided.
+accessibility.text.label.issue.fieldset = “fieldset” elements must be labelled.
+
+# LOCALIZATION NOTE (accessibility.text.label.issue.fieldset.legend2): A title text that
+# describes that currently selected accessible object for a <fieldset> must have a name
+# provided via <legend> element.
+accessibility.text.label.issue.fieldset.legend2 = Use a “legend” element to label a “fieldset”.
+
+# LOCALIZATION NOTE (accessibility.text.label.issue.form): A title text that
+# describes that currently selected accessible object for a form element must have a name
+# provided.
+accessibility.text.label.issue.form = Form elements must be labelled.
+
+# LOCALIZATION NOTE (accessibility.text.label.issue.form.visible): A title text that
+# describes that currently selected accessible object for a form element should have a name
+# provided via a visible label/element.
+accessibility.text.label.issue.form.visible = Form elements should have a visible text label.
+
+# LOCALIZATION NOTE (accessibility.text.label.issue.frame): A title text that
+# describes that currently selected accessible object for a <frame> must have a name
+# provided.
+accessibility.text.label.issue.frame = “frame” elements must be labelled.
+
+# LOCALIZATION NOTE (accessibility.text.label.issue.glyph): A title text that
+# describes that currently selected accessible object for a <mglyph> must have a name
+# provided via alt attribute.
+accessibility.text.label.issue.glyph = Use “alt” attribute to label “mglyph” elements.
+
+# LOCALIZATION NOTE (accessibility.text.label.issue.heading): A title text that
+# describes that currently selected accessible object for a heading must have a name
+# provided.
+accessibility.text.label.issue.heading = Headings must be labelled.
+
+# LOCALIZATION NOTE (accessibility.text.label.issue.heading.content): A title text that
+# describes that currently selected accessible object for a heading must have visible
+# content.
+accessibility.text.label.issue.heading.content = Headings should have visible text content.
+
+# LOCALIZATION NOTE (accessibility.text.label.issue.iframe): A title text that
+# describes that currently selected accessible object for an <iframe> have a name
+# provided via title attribute.
+accessibility.text.label.issue.iframe = Use “title” attribute to describe “iframe” content.
+
+# LOCALIZATION NOTE (accessibility.text.label.issue.image): A title text that
+# describes that currently selected accessible object for graphical content must have a
+# name provided.
+accessibility.text.label.issue.image = Content with images must be labelled.
+
+# LOCALIZATION NOTE (accessibility.text.label.issue.interactive): A title text that
+# describes that currently selected accessible object for interactive element must have a
+# name provided.
+accessibility.text.label.issue.interactive = Interactive elements must be labelled.
+
+# LOCALIZATION NOTE (accessibility.text.label.issue.optgroup.label2): A title text that
+# describes that currently selected accessible object for an <optgroup> must have a
+# name provided via label attribute.
+accessibility.text.label.issue.optgroup.label2 = Use a “label” attribute to label an “optgroup”.
+
+# LOCALIZATION NOTE (accessibility.text.label.issue.toolbar): A title text that
+# describes that currently selected accessible object for a toolbar must have a
+# name provided when there is more than one toolbar in the document.
+accessibility.text.label.issue.toolbar = Toolbars must be labelled when there is more than one toolbar.
+
+# LOCALIZATION NOTE (accessibility.keyboard.issue.semantics): A title text that
+# describes that currently selected accessible object is focusable and should
+# indicate that it could be interacted with.
+accessibility.keyboard.issue.semantics=Focusable elements should have interactive semantics.
+
+# LOCALIZATION NOTE (accessibility.keyboard.issue.tabindex): A title text that
+# describes that currently selected accessible object has a corresponding
+# DOMNode that defines a tabindex attribute greater that 0 which can result in
+# unexpected behaviour when navigating with keyboard.
+accessibility.keyboard.issue.tabindex=Avoid using “tabindex” attribute greater than zero.
+
+# LOCALIZATION NOTE (accessibility.keyboard.issue.action): A title text that
+# describes that currently selected accessible object is interactive but can not
+# be activated using keyboard or accessibility API.
+accessibility.keyboard.issue.action=Interactive elements must be able to be activated using a keyboard.
+
+# LOCALIZATION NOTE (accessibility.keyboard.issue.focusable): A title text that
+# describes that currently selected accessible object is interactive but is not
+# focusable with a keyboard.
+accessibility.keyboard.issue.focusable=Interactive elements must be focusable.
+
+# LOCALIZATION NOTE (accessibility.keyboard.issue.focus.visible): A title text
+# that describes that currently selected accessible object is focusable but
+# might not have appropriate focus styling.
+accessibility.keyboard.issue.focus.visible=Focusable element may be missing focus styling.
+
+# LOCALIZATION NOTE (accessibility.keyboard.issue.mouse.only): A title text that
+# describes that currently selected accessible object is not focusable and not
+# semantic but can be activated via mouse (e.g. has click handler).
+accessibility.keyboard.issue.mouse.only=Clickable elements must be focusable and should have interactive semantics.
diff --git a/l10n-en-GB/devtools/shared/debugger-paused-reasons.ftl b/l10n-en-GB/devtools/shared/debugger-paused-reasons.ftl
new file mode 100644
index 0000000000..66c986b5e3
--- /dev/null
+++ b/l10n-en-GB/devtools/shared/debugger-paused-reasons.ftl
@@ -0,0 +1,87 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+### These strings are used inside the Debugger which is available from the Web
+### Developer sub-menu -> 'Debugger', as well as in the "Paused Debugger
+### Overlay" that is displayed in the content page when it pauses.
+
+
+### The correct localization of this file might be to keep it in
+### English, or another language commonly spoken among web developers.
+### You want to make that choice consistent across the developer tools.
+### A good criteria is the language in which you'd find the best
+### documentation on web development on the web.
+
+# The text that is displayed in a info block explaining how the debugger is
+# currently paused due to a `debugger` statement in the code
+whypaused-debugger-statement = Paused on debugger statement
+
+# The text that is displayed in a info block explaining how the debugger is
+# currently paused on a breakpoint
+whypaused-breakpoint = Paused on breakpoint
+
+# The text that is displayed in a info block explaining how the debugger is
+# currently paused on an event breakpoint.
+whypaused-event-breakpoint = Paused on event breakpoint
+
+# The text that is displayed in a info block explaining how the debugger is
+# currently paused on an exception
+whypaused-exception = Paused on exception
+
+# The text that is displayed in a info block explaining how the debugger is
+# currently paused on a DOM mutation breakpoint
+whypaused-mutation-breakpoint = Paused on DOM mutation
+
+# The text that is displayed to describe an added node which triggers a subtree
+# modification
+whypaused-mutation-breakpoint-added = Added:
+
+# The text that is displayed to describe a removed node which triggers a subtree
+# modification
+whypaused-mutation-breakpoint-removed = Removed:
+
+# The text that is displayed in a info block explaining how the debugger is
+# currently paused at a JS execution
+whypaused-interrupted = Paused at Execution
+
+# The text that is displayed in a info block explaining how the debugger is
+# currently paused while stepping in or out of the stack
+whypaused-resume-limit = Paused while stepping
+
+# The text that is displayed in a info block explaining how the debugger is
+# currently paused on a dom event
+whypaused-pause-on-dom-events = Paused on event listener
+
+# The text that is displayed in an info block when evaluating a conditional
+# breakpoint throws an error
+whypaused-breakpoint-condition-thrown = Error with conditional breakpoint
+
+# The text that is displayed in a info block explaining how the debugger is
+# currently paused on an xml http request
+whypaused-xhr = Paused on XMLHttpRequest
+
+# The text that is displayed in a info block explaining how the debugger is
+# currently paused on a promise rejection
+whypaused-promise-rejection = Paused on promise rejection
+
+# The text that is displayed in a info block explaining how the debugger is
+# currently paused at a watchpoint on an object property
+whypaused-get-watchpoint = Paused on property get
+
+# The text that is displayed in an info block explaining how the debugger is
+# currently paused at a watchpoint on an object property
+whypaused-set-watchpoint = Paused on property set
+
+# The text that is displayed in a info block explaining how the debugger is
+# currently paused on an assert
+whypaused-assert = Paused on assertion
+
+# The text that is displayed in a info block explaining how the debugger is
+# currently paused on a debugger statement
+whypaused-debug-command = Paused on debugged function
+
+# The text that is displayed in a info block explaining how the debugger is
+# currently paused on an event listener breakpoint set
+whypaused-other = Debugger paused
diff --git a/l10n-en-GB/devtools/shared/debugger.properties b/l10n-en-GB/devtools/shared/debugger.properties
new file mode 100644
index 0000000000..70de56aa2b
--- /dev/null
+++ b/l10n-en-GB/devtools/shared/debugger.properties
@@ -0,0 +1,67 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# LOCALIZATION NOTE These strings are used inside the Debugger
+# which is available from the Web Developer sub-menu -> 'Debugger'.
+# The correct localization of this file might be to keep it in
+# English, or another language commonly spoken among web developers.
+# You want to make that choice consistent across the developer tools.
+# A good criteria is the language in which you'd find the best
+# documentation on web development on the web.
+
+# LOCALIZATION NOTE These strings are used inside the Debugger
+# which is available from the Browser Tools sub-menu -> 'Debugger'.
+# The correct localization of this file might be to keep it in
+# English, or another language commonly spoken among web developers.
+# You want to make that choice consistent across the developer tools.
+# A good criteria is the language in which you'd find the best
+# documentation on web development on the web.
+
+# LOCALIZATION NOTE (remoteIncomingPromptTitle): The title displayed on the
+# dialog that prompts the user to allow the incoming connection.
+remoteIncomingPromptTitle=Incoming Connection
+
+# LOCALIZATION NOTE (remoteIncomingPromptHeader): Header displayed on the
+# dialog that prompts the user to allow the incoming connection.
+remoteIncomingPromptHeader=An incoming request to permit remote debugging connection was detected. A remote client can take complete control over your browser!
+# LOCALIZATION NOTE (remoteIncomingPromptClientEndpoint): Part of the prompt
+# dialog for the user to choose whether an incoming connection should be
+# allowed.
+# %1$S: The host and port of the client such as "127.0.0.1:6000"
+remoteIncomingPromptClientEndpoint=Client Endpoint: %1$S
+# LOCALIZATION NOTE (remoteIncomingPromptServerEndpoint): Part of the prompt
+# dialog for the user to choose whether an incoming connection should be
+# allowed.
+# %1$S: The host and port of the server such as "127.0.0.1:6000"
+remoteIncomingPromptServerEndpoint=Server Endpoint: %1$S
+# LOCALIZATION NOTE (remoteIncomingPromptFooter): Footer displayed on the
+# dialog that prompts the user to allow the incoming connection.
+remoteIncomingPromptFooter=Allow connection?
+
+# LOCALIZATION NOTE (remoteIncomingPromptDisable): The label displayed on the
+# third button in the incoming connection dialog that lets the user disable the
+# remote debugger server.
+remoteIncomingPromptDisable=Disable
+
+# LOCALIZATION NOTE (clientSendOOBTitle): The title displayed on the dialog that
+# instructs the user to transfer an authentication token to the server.
+clientSendOOBTitle=Client Identification
+# LOCALIZATION NOTE (clientSendOOBHeader): Header displayed on the dialog that
+# instructs the user to transfer an authentication token to the server.
+clientSendOOBHeader=The endpoint you are connecting to needs more information to authenticate this connection.  Please provide the token below in the prompt that appears on the other end.
+# LOCALIZATION NOTE (clientSendOOBHash): Part of the dialog that instructs the
+# user to transfer an authentication token to the server.
+# %1$S: The client's cert fingerprint
+clientSendOOBHash=My Cert: %1$S
+# LOCALIZATION NOTE (clientSendOOBToken): Part of the dialog that instructs the
+# user to transfer an authentication token to the server.
+# %1$S: The authentication token that the user will transfer.
+clientSendOOBToken=Token: %1$S
+
+# LOCALIZATION NOTE (serverReceiveOOBTitle): The title displayed on the dialog
+# that instructs the user to provide an authentication token from the client.
+serverReceiveOOBTitle=Provide Client Token
+# LOCALIZATION NOTE (serverReceiveOOBBody): Main text displayed on the dialog
+# that instructs the user to provide an authentication token from the client.
+serverReceiveOOBBody=The client should be displaying a token value.  Enter that token value here to complete authentication with this client.
diff --git a/l10n-en-GB/devtools/shared/eyedropper.properties b/l10n-en-GB/devtools/shared/eyedropper.properties
new file mode 100644
index 0000000000..0f320ab37c
--- /dev/null
+++ b/l10n-en-GB/devtools/shared/eyedropper.properties
@@ -0,0 +1,14 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# LOCALIZATION NOTE These strings are used in the Eyedropper color tool.
+# LOCALIZATION NOTE The correct localization of this file might be to keep it
+# in English, or another language commonly spoken among web developers.
+# You want to make that choice consistent across the developer tools.
+# A good criteria is the language in which you'd find the best documentation
+# on web development on the web.
+
+# LOCALIZATION NOTE  (colorValue.copied): This text is displayed when the user selects a
+# color with the eyedropper and it's copied to the clipboard.
+colorValue.copied=copied
diff --git a/l10n-en-GB/devtools/shared/highlighters.ftl b/l10n-en-GB/devtools/shared/highlighters.ftl
new file mode 100644
index 0000000000..3bd3cad2d1
--- /dev/null
+++ b/l10n-en-GB/devtools/shared/highlighters.ftl
@@ -0,0 +1,67 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+### This file contains strings used in highlighters.
+### Highlighters are visualizations that DevTools draws on top of content to aid
+### in understanding content sizing, etc.
+
+# The row and column position of a grid cell shown in the grid cell infobar when hovering
+# over the CSS grid outline.
+# Variables
+# $row (integer) - The row index
+# $column (integer) - The column index
+grid-row-column-positions = Row { $row } / Column { $column }
+
+# The layout type of an element shown in the infobar when hovering over a DOM element and
+# it is a grid container.
+gridtype-container = Grid Container
+
+# The layout type of an element shown in the infobar when hovering over a DOM element and
+# it is a grid item.
+gridtype-item = Grid Item
+
+# The layout type of an element shown in the infobar when hovering over a DOM element and
+# it is both a grid container and a grid item.
+gridtype-dual = Grid Container/Item
+
+# The layout type of an element shown in the infobar when hovering over a DOM element and
+# it is a flex container.
+flextype-container = Flex Container
+
+# The layout type of an element shown in the infobar when hovering over a DOM element and
+# it is a flex item.
+flextype-item = Flex Item
+
+# The layout type of an element shown in the infobar when hovering over a DOM element and
+# it is both a flex container and a flex item.
+flextype-dual = Flex Container/Item
+
+# The message displayed in the content page when the user clicks on the
+# "Pick an element from the page" in about:devtools-toolbox inspector panel, when
+# debugging a remote page.
+# Variables
+# $action (string) - Will either be remote-node-picker-notice-action-desktop or
+#                    remote-node-picker-notice-action-touch
+remote-node-picker-notice = DevTools Node Picker enabled. { $action }
+
+# Text displayed in `remote-node-picker-notice`, when the remote page is on desktop
+remote-node-picker-notice-action-desktop = Click an element to select it in the Inspector
+
+# Text displayed in `remote-node-picker-notice`, when the remote page is on Android
+remote-node-picker-notice-action-touch = Tap an element to select it in the Inspector
+
+# The text displayed in the button that is in the notice in the content page when the user
+# clicks on the "Pick an element from the page" in about:devtools-toolbox inspector panel,
+# when debugging a remote page.
+remote-node-picker-notice-hide-button = Hide
+
+# The text displayed in a toolbox notification message which is only displayed
+# if prefers-reduced-motion is enabled (via OS-level settings or by using the
+# ui.prefersReducedMotion=1 preference).
+simple-highlighters-message = When prefers-reduced-motion is enabled, a simpler highlighter can be enabled in the settings panel, to avoid flashing colours.
+
+# Text displayed in a button inside the "simple-highlighters-message" toolbox
+# notification. "Settings" here refers to the DevTools settings panel.
+simple-highlighters-settings-button = Open Settings
diff --git a/l10n-en-GB/devtools/shared/screenshot.properties b/l10n-en-GB/devtools/shared/screenshot.properties
new file mode 100644
index 0000000000..7bd9494313
--- /dev/null
+++ b/l10n-en-GB/devtools/shared/screenshot.properties
@@ -0,0 +1,148 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# LOCALIZATION NOTE These strings are used inside Web Console commands.
+# The Web Console command line is available from the Web Developer sub-menu
+# -> 'Web Console'.
+#
+# The correct localization of this file might be to keep it in
+# English, or another language commonly spoken among web developers.
+# You want to make that choice consistent across the developer tools.
+# A good criteria is the language in which you'd find the best
+# documentation on web development on the web.
+
+# LOCALIZATION NOTE These strings are used inside the Web Console commands
+# which can be executed in the Developer Tools, available in the
+# Browser Tools sub-menu -> 'Web Developer Tools'
+#
+# The correct localization of this file might be to keep it in
+# English, or another language commonly spoken among web developers.
+# You want to make that choice consistent across the developer tools.
+# A good criteria is the language in which you'd find the best
+# documentation on web development on the web.
+
+# LOCALIZATION NOTE (screenshotDesc) A very short description of the
+# 'screenshot' command. Displayed when the --help flag is passed to
+# the screenshot command.
+screenshotDesc=Save an image of the page
+
+# LOCALIZATION NOTE (screenshotFilenameDesc) A very short string to describe
+# the 'filename' parameter to the 'screenshot' command. Displayed when the
+# --help flag is passed to the screenshot command.
+screenshotFilenameDesc=Destination filename
+
+# LOCALIZATION NOTE (screenshotFilenameManual) A fuller description of the
+# 'filename' parameter to the 'screenshot' command.
+screenshotFilenameManual=The name of the file (should have a ‘.png’ extension) to which we write the screenshot.
+
+# LOCALIZATION NOTE (screenshotClipboardDesc) A very short string to describe
+# the 'clipboard' parameter to the 'screenshot' command. Displayed when the
+# --help flag is passed to the screenshot command.
+screenshotClipboardDesc=Copy screenshot to clipboard? (true/false)
+
+# LOCALIZATION NOTE (screenshotClipboardManual) A fuller description of the
+# 'clipboard' parameter to the 'screenshot' command. Displayed when the
+# --help flag is passed to the screenshot command.
+screenshotClipboardManual=True if you want to copy the screenshot instead of saving it to a file.
+
+# LOCALIZATION NOTE (screenshotGroupOptions) A label for the optional options of
+# the screenshot command. Displayed when the --help flag is passed to the
+# screenshot command.
+screenshotGroupOptions=Options
+
+# LOCALIZATION NOTE (screenshotDelayDesc) A very short string to describe
+# the 'delay' parameter to the 'screenshot' command. Displayed when the
+# --help flag is passed to the screenshot command.
+screenshotDelayDesc=Delay (seconds)
+
+# LOCALIZATION NOTE (screenshotDelayManual) A fuller description of the
+# 'delay' parameter to the 'screenshot' command. Displayed when the
+# --help flag is passed to the screenshot command.
+screenshotDelayManual=The time to wait (in seconds) before the screenshot is taken
+
+# LOCALIZATION NOTE (screenshotDPRDesc) A very short string to describe
+# the 'dpr' parameter to the 'screenshot' command. Displayed when the
+# --help flag is passed to the `screenshot command.
+screenshotDPRDesc=Device pixel ratio
+
+# LOCALIZATION NOTE (screenshotDPRManual) A fuller description of the
+# 'dpr' parameter to the 'screenshot' command. Displayed when the
+# --help flag is passed to the `screenshot command.
+screenshotDPRManual=The device pixel ratio to use when taking the screenshot
+
+# LOCALIZATION NOTE (screenshotFullPageDesc) A very short string to describe
+# the 'fullpage' parameter to the 'screenshot' command. Displayed when the
+# --help flag is passed to the `screenshot command.
+screenshotFullPageDesc=Entire web page? (true/false)
+
+# LOCALIZATION NOTE (screenshotFullPageManual) A fuller description of the
+# 'fullpage' parameter to the 'screenshot' command. Displayed when the
+# --help flag is passed to the `screenshot command.
+screenshotFullPageManual=True if the screenshot should also include parts of the web page which are outside the current scrolled bounds.
+
+# LOCALIZATION NOTE (screenshotFileDesc) A very short string to describe
+# the 'file' parameter to the 'screenshot' command. Displayed when the
+# --help flag is passed to the `screenshot command.
+screenshotFileDesc=Save to file? (true/false)
+
+# LOCALIZATION NOTE (screenshotFileManual) A fuller description of the
+# 'file' parameter to the 'screenshot' command. Displayed when the
+# --help flag is passed to the `screenshot command.
+screenshotFileManual=True if the screenshot should save the file even when other options are enabled (eg. clipboard).
+
+# LOCALIZATION NOTE (screenshotGeneratedFilename) The auto generated filename
+# when no file name is provided. The first argument (%1$S) is the date string
+# in yyyy-mm-dd format and the second argument (%2$S) is the time string
+# in HH.MM.SS format. Please don't add the extension here.
+screenshotGeneratedFilename=Screen Shot %1$S at %2$S
+
+# LOCALIZATION NOTE (screenshotErrorSavingToFile) Text displayed to user upon
+# encountering error while saving the screenshot to the file specified.
+# The argument (%1$S) is the filename.
+screenshotErrorSavingToFile=Error saving to %1$S
+
+# LOCALIZATION NOTE (screenshotSavedToFile) Text displayed to user when the
+# screenshot is successfully saved to the file specified.
+# The argument (%1$S) is the filename.
+screenshotSavedToFile=Saved to %1$S
+
+# LOCALIZATION NOTE (screenshotErrorCopying) Text displayed to user upon
+# encountering error while copying the screenshot to clipboard.
+screenshotErrorCopying=Error occurred while copying screenshot to clipboard.
+
+# LOCALIZATION NOTE (screenshotCopied) Text displayed to user when the
+# screenshot is successfully copied to the clipboard.
+screenshotCopied=Screenshot copied to clipboard.
+
+# LOCALIZATION NOTE (inspectNodeDesc) A very short string to describe the
+# 'node' parameter to the 'inspect' command. Displayed when the
+# --help flag is passed to the `screenshot command.
+inspectNodeDesc=CSS selector
+
+# LOCALIZATION NOTE (inspectNodeManual) A fuller description of the 'node'
+# parameter to the 'inspect' command. Displayed when the --help flag is
+# passed to the `screenshot command.
+inspectNodeManual=A CSS selector for use with document.querySelector which identifies a single element
+
+# LOCALIZATION NOTE (screenshotTruncationWarning) Text displayed to user when the image
+# that would be created by the screenshot is too big and needs to be truncated to avoid
+# errors.
+# The first parameter is the width of the final image and the second parameter is the
+# height of the image.
+screenshotTruncationWarning=The image was cut off to %1$S×%2$S as the resulting image was too large
+
+# LOCALIZATION NOTE (screenshotDPRDecreasedWarning2) Text displayed to user when
+# taking the screenshot initially failed. When the Device Pixel Ratio is larger
+# than 1.0 a second try immediately after displaying this message is attempted.
+screenshotDPRDecreasedWarning=The device pixel ratio was reduced to 1 as the resulting image was too large
+
+# LOCALIZATION NOTE (screenshotRenderingError) Text displayed to user upon
+# encountering an error while rendering the screenshot. This most often happens when the
+# resulting image is too large to be rendered.
+screenshotRenderingError=Error creating the image. The resulting image was probably too large.
+
+# LOCALIZATION NOTE (screenshotNoSelectorMatchWarning) Text displayed to user when the
+# provided selector for the screenshot does not match any element on the page.
+# The argument (%1$S) is selector.
+screenshotNoSelectorMatchWarning=The ‘%S’ selector does not match any element on the page.
diff --git a/l10n-en-GB/devtools/shared/shared.properties b/l10n-en-GB/devtools/shared/shared.properties
new file mode 100644
index 0000000000..0978450dee
--- /dev/null
+++ b/l10n-en-GB/devtools/shared/shared.properties
@@ -0,0 +1,6 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# LOCALIZATION NOTE (ellipsis): The ellipsis (three dots) character
+ellipsis=…
diff --git a/l10n-en-GB/devtools/shared/styleinspector.properties b/l10n-en-GB/devtools/shared/styleinspector.properties
new file mode 100644
index 0000000000..201187acab
--- /dev/null
+++ b/l10n-en-GB/devtools/shared/styleinspector.properties
@@ -0,0 +1,267 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# LOCALIZATION NOTE These strings are used inside the Style Inspector.
+#
+# The correct localization of this file might be to keep it in
+# English, or another language commonly spoken among web developers.
+# You want to make that choice consistent across the developer tools.
+# A good criteria is the language in which you'd find the best
+# documentation on web development on the web.
+
+
+# LOCALIZATION NOTE (rule.status): For each style property the panel shows
+# the rules which hold that specific property. For every rule, the rule status
+# is also displayed: a rule can be the best match, a match, a parent match, or a
+# rule did not match the element the user has highlighted.
+rule.status.BEST=Best Match
+rule.status.MATCHED=Matched
+rule.status.PARENT_MATCH=Parent Match
+
+# LOCALIZATION NOTE (rule.sourceElement, rule.sourceInline,
+# rule.sourceConstructed): For each style property the panel shows the rules
+# which hold that specific property.
+# For every rule, the rule source is also displayed: a rule can come from a
+# file, from the same page (inline), from a constructed style sheet
+# (constructed), or from the element itself (element).
+rule.sourceInline=inline
+rule.sourceConstructed=constructed
+rule.sourceElement=element
+
+# LOCALIZATION NOTE (rule.inheritedFrom): Shown for CSS rules
+# that were inherited from a parent node. Will be passed a node
+# identifier of the parent node.
+# e.g "Inherited from body#bodyID"
+rule.inheritedFrom=Inherited from %S
+
+# LOCALIZATION NOTE (rule.keyframe): Shown for CSS Rules keyframe header.
+# Will be passed an identifier of the keyframe animation name.
+rule.keyframe=Keyframes %S
+
+# LOCALIZATION NOTE (rule.userAgentStyles): Shown next to the style sheet
+# link for CSS rules that were loaded from a user agent style sheet.
+# These styles will not be editable, and will only be visible if the
+# devtools.inspector.showUserAgentStyles pref is true.
+rule.userAgentStyles=(user agent)
+
+# LOCALIZATION NOTE (rule.pseudoElement): Shown for CSS rules
+# pseudo element header
+rule.pseudoElement=Pseudo-elements
+
+# LOCALIZATION NOTE (rule.selectedElement): Shown for CSS rules element header if
+# pseudo elements are present in the rule view.
+rule.selectedElement=This Element
+
+# LOCALIZATION NOTE (rule.warning.title): When an invalid property value is
+# entered into the rule view a warning icon is displayed. This text is used for
+# the title attribute of the warning icon.
+rule.warning.title=Invalid property value
+
+# LOCALIZATION NOTE (rule.warningName.title): When an invalid property name is
+# entered into the rule view a warning icon is displayed. This text is used for
+# the title attribute of the warning icon.
+rule.warningName.title=Invalid property name
+
+# LOCALIZATION NOTE (rule.filterProperty.title): Text displayed in the tooltip
+# of the search button that is shown next to a property that has been overridden
+# in the rule view.
+rule.filterProperty.title=Filter rules containing this property
+
+# LOCALIZATION NOTE (rule.empty): Text displayed when the highlighter is
+# first opened and there's no node selected in the rule view.
+rule.empty=No element selected.
+
+# LOCALIZATION NOTE (rule.variableValue): Text displayed in a tooltip
+# when the mouse is over a variable use (like "var(--something)") in
+# the rule view.  The first argument is the variable name and the
+# second argument is the value.
+rule.variableValue=%S = %S
+
+# LOCALIZATION NOTE (rule.variableUnset): Text displayed in a tooltip
+# when the mouse is over a variable use (like "var(--something)"),
+# where the variable is not set.  the rule view.  The argument is the
+# variable name.
+rule.variableUnset=%S is not set
+
+# LOCALIZATION NOTE (rule.selectorHighlighter.tooltip): Text displayed in a
+# tooltip when the mouse is over a selector highlighter icon in the rule view.
+rule.selectorHighlighter.tooltip=Highlight all elements matching this selector
+
+# LOCALIZATION NOTE (rule.colorSwatch.tooltip): Text displayed in a tooltip
+# when the mouse is over a color swatch in the rule view.
+rule.colorSwatch.tooltip=Click to open the colour picker, Shift+click to change the colour format
+
+# LOCALIZATION NOTE (rule.bezierSwatch.tooltip): Text displayed in a tooltip
+# when the mouse is over a cubic-bezier swatch in the rule view.
+rule.bezierSwatch.tooltip=Click to open the timing-function editor
+
+# LOCALIZATION NOTE (rule.filterSwatch.tooltip): Text displayed in a tooltip
+# when the mouse is over a filter swatch in the rule view.
+rule.filterSwatch.tooltip=Click to open the filter editor
+
+# LOCALIZATION NOTE (rule.angleSwatch.tooltip): Text displayed in a tooltip
+# when the mouse is over a angle swatch in the rule view.
+rule.angleSwatch.tooltip=Shift+click to change the angle format
+
+# LOCALIZATION NOTE (rule.flexToggle.tooltip): Text displayed in a tooltip
+# when the mouse is over a Flexbox toggle icon in the rule view.
+rule.flexToggle.tooltip=Click to toggle the Flexbox highlighter
+
+# LOCALIZATION NOTE (rule.gridToggle.tooltip): Text displayed in a tooltip
+# when the mouse is over a CSS Grid toggle icon in the rule view.
+rule.gridToggle.tooltip=Click to toggle the CSS Grid highlighter
+
+# LOCALIZATION NOTE (rule.filterStyles.placeholder): This is the placeholder that
+# goes in the search box when no search term has been entered.
+rule.filterStyles.placeholder=Filter Styles
+
+# LOCALIZATION NOTE (rule.addRule.tooltip): This is the tooltip shown when
+# hovering the `Add new rule` button in the rules view toolbar.
+rule.addRule.tooltip=Add new rule
+
+# LOCALIZATION NOTE (rule.togglePseudo.tooltip): This is the tooltip
+# shown when hovering over the `Toggle Pseudo Class Panel` button in the
+# rule view toolbar.
+rule.togglePseudo.tooltip=Toggle pseudo-classes
+
+# LOCALIZATION NOTE (rule.classPanel.toggleClass.tooltip): This is the tooltip
+# shown when hovering over the `Toggle Class Panel` button in the
+# rule view toolbar.
+rule.classPanel.toggleClass.tooltip=Toggle classes
+
+# LOCALIZATION NOTE (rule.classPanel.newClass.placeholder): This is the placeholder
+# shown inside the text field used to add a new class in the rule-view.
+rule.classPanel.newClass.placeholder=Add new class
+
+# LOCALIZATION NOTE (rule.classPanel.noClasses): This is the text displayed in the
+# class panel when the current element has no classes applied.
+rule.classPanel.noClasses=No classes on this element
+
+# LOCALIZATION NOTE (rule.printSimulation.tooltip):
+# This is the tooltip of the print simulation button in the Rule View toolbar
+# that toggles print simulation.
+rule.printSimulation.tooltip=Toggle print media simulation for the page
+
+# LOCALIZATION NOTE (rule.colorSchemeSimulation.tooltip):
+# This is the tooltip of the color scheme simulation button in the Rule View
+# toolbar that toggles color-scheme simulation.
+rule.colorSchemeSimulation.tooltip=Toggle color-scheme simulation for the page
+
+# LOCALIZATION NOTE (rule.twistyCollapse.label): The text a screen reader
+# speaks when the header of a rule is expanded.
+rule.twistyCollapse.label=Collapse
+
+# LOCALIZATION NOTE (rule.twistyExpand.label): The text a screen reader
+# speaks when the header of a rule is collapsed.
+rule.twistyExpand.label=Expand
+
+# LOCALIZATION NOTE (rule.expandableContainerToggleButton.title):
+# This is the tooltip for expandable container toggle button in the Rule View (Pseudo-elements, keyframes, …)
+rule.expandableContainerToggleButton.title=Toggle panel
+
+# LOCALIZATION NOTE (rule.containerQuery.selectContainerButton.tooltip): Text displayed in a
+# tooltip when the mouse is over the icon to select a container in a container query in the rule view.
+rule.containerQuery.selectContainerButton.tooltip=Click to select the container node
+
+# LOCALIZATION NOTE (rule.propertyToggle.label):
+# This is the label for the checkbox input in the rule view that allow to disable/re-enable
+# a specific property in a rule.
+# The argument is the property name.
+rule.propertyToggle.label=Enable %S property
+
+# LOCALIZATION NOTE (rule.newPropertyName.label):
+# This is the label for the new property input in the rule view.
+rule.newPropertyName.label=New property name
+
+# LOCALIZATION NOTE (rule.propertyName.label):
+# This is the label for the property name input in the rule view.
+rule.propertyName.label=Property name
+
+# LOCALIZATION NOTE (styleinspector.contextmenu.copyColor): Text displayed in the rule
+# and computed view context menu when a color value was clicked.
+styleinspector.contextmenu.copyColor=Copy Colour
+
+# LOCALIZATION NOTE (styleinspector.contextmenu.copyColor.accessKey): Access key for
+# the rule and computed view context menu "Copy Color" entry.
+styleinspector.contextmenu.copyColor.accessKey=l
+
+# LOCALIZATION NOTE (styleinspector.contextmenu.copyUrl): In rule and computed view :
+# text displayed in the context menu for an image URL.
+# Clicking it copies the URL to the clipboard of the user.
+styleinspector.contextmenu.copyUrl=Copy URL
+
+# LOCALIZATION NOTE (styleinspector.contextmenu.copyUrl.accessKey): Access key for
+# the rule and computed view context menu "Copy URL" entry.
+styleinspector.contextmenu.copyUrl.accessKey=U
+
+# LOCALIZATION NOTE (styleinspector.contextmenu.copyImageDataUrl): In rule and computed view :
+# text displayed in the context menu for an image URL.
+# Clicking it copies the image as Data-URL to the clipboard of the user.
+styleinspector.contextmenu.copyImageDataUrl=Copy Image Data-URL
+
+# LOCALIZATION NOTE (styleinspector.contextmenu.copyImageDataUrl.accessKey): Access key for
+# the rule and computed view context menu "Copy Image Data-URL" entry.
+styleinspector.contextmenu.copyImageDataUrl.accessKey=I
+
+# LOCALIZATION NOTE (styleinspector.copyImageDataUrlError): Text set in the clipboard
+# if an error occurs when using the copyImageDataUrl context menu action
+# (invalid image link, timeout, etc...)
+styleinspector.copyImageDataUrlError=Failed to copy image Data-URL
+
+# LOCALIZATION NOTE (styleinspector.contextmenu.toggleOrigSources): Text displayed in the rule view
+# context menu.
+styleinspector.contextmenu.toggleOrigSources=Show Original Sources
+
+# LOCALIZATION NOTE (styleinspector.contextmenu.toggleOrigSources.accessKey): Access key for
+# the rule view context menu "Show original sources" entry.
+styleinspector.contextmenu.toggleOrigSources.accessKey=O
+
+# LOCALIZATION NOTE (styleinspector.contextmenu.addNewRule): Text displayed in the
+# rule view context menu for adding a new rule to the element.
+# This should match inspector.addRule.tooltip in inspector.properties
+styleinspector.contextmenu.addNewRule=Add New Rule
+
+# LOCALIZATION NOTE (styleinspector.contextmenu.addNewRule.accessKey): Access key for
+# the rule view context menu "Add rule" entry.
+styleinspector.contextmenu.addNewRule.accessKey=R
+
+# LOCALIZATION NOTE (styleinspector.contextmenu.selectAll): Text displayed in the
+# computed view context menu.
+styleinspector.contextmenu.selectAll=Select All
+
+# LOCALIZATION NOTE (styleinspector.contextmenu.selectAll.accessKey): Access key for
+# the computed view context menu "Select all" entry.
+styleinspector.contextmenu.selectAll.accessKey=A
+
+# LOCALIZATION NOTE (styleinspector.contextmenu.copy): Text displayed in the
+# computed view context menu.
+styleinspector.contextmenu.copy=Copy
+
+# LOCALIZATION NOTE (styleinspector.contextmenu.copy.accessKey): Access key for
+# the computed view context menu "Copy" entry.
+styleinspector.contextmenu.copy.accessKey=C
+
+# LOCALIZATION NOTE (styleinspector.contextmenu.copyLocation): Text displayed in the
+# rule view context menu for copying the source location.
+styleinspector.contextmenu.copyLocation=Copy Location
+
+# LOCALIZATION NOTE (styleinspector.contextmenu.copyDeclaration): Text
+# displayed in the rule view context menu for copying the CSS declaration.
+styleinspector.contextmenu.copyDeclaration=Copy Declaration
+
+# LOCALIZATION NOTE (styleinspector.contextmenu.copyPropertyName): Text displayed in
+# the rule view context menu for copying the property name.
+styleinspector.contextmenu.copyPropertyName=Copy Property Name
+
+# LOCALIZATION NOTE (styleinspector.contextmenu.copyPropertyValue): Text displayed in
+# the rule view context menu for copying the property value.
+styleinspector.contextmenu.copyPropertyValue=Copy Property Value
+
+# LOCALIZATION NOTE (styleinspector.contextmenu.copyRule): Text displayed in the
+# rule view context menu for copying the rule.
+styleinspector.contextmenu.copyRule=Copy Rule
+
+# LOCALIZATION NOTE (styleinspector.contextmenu.copySelector): Text displayed in the
+# rule view context menu for copying the selector.
+styleinspector.contextmenu.copySelector=Copy Selector
diff --git a/l10n-en-GB/devtools/shared/webconsole-commands.ftl b/l10n-en-GB/devtools/shared/webconsole-commands.ftl
new file mode 100644
index 0000000000..9ab8734136
--- /dev/null
+++ b/l10n-en-GB/devtools/shared/webconsole-commands.ftl
@@ -0,0 +1,34 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+# These strings are used inside the Web Console commands
+# which can be executed in the Developer Tools, available in the
+# Browser Tools sub-menu -> 'Web Developer Tools'
+
+# Usage string for :block command
+webconsole-commands-usage-block =
+    :block URL_STRING
+    
+    Start blocking network requests
+    
+      It accepts only one URL_STRING argument, an unquoted string which will be used to block all requests whose URL includes this string.
+      Use :unblock or the Network Monitor request blocking sidebar to undo this.
+# Usage string for :unblock command
+webconsole-commands-usage-unblock =
+    :unblock URL_STRING
+    
+    Stop blocking network requests
+    
+      It accepts only one argument, the exact same string previously passed to :block.
+# Usage string for :trace command
+webconsole-commands-usage-trace =
+    :trace
+    
+    Toggles the JavaScript tracer
+    
+      It supports the following arguments:
+        --logMethod to be set to ‘console’ for logging to the web console (the default), or ‘stdout’ for logging to the standard output,
+        --prefix Optional string which will be logged in front of all the trace logs,
+        --help or --usage to show this message.
diff --git a/l10n-en-GB/devtools/startup/key-shortcuts.ftl b/l10n-en-GB/devtools/startup/key-shortcuts.ftl
new file mode 100644
index 0000000000..bbc2c7ca1e
--- /dev/null
+++ b/l10n-en-GB/devtools/startup/key-shortcuts.ftl
@@ -0,0 +1,38 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# Key pressed to open a toolbox with the default panel selected
+devtools-commandkey-toggle-toolbox = I
+# Alternative key pressed to open a toolbox with the default panel selected
+devtools-commandkey-toggle-toolbox-f12 = VK_F12
+# Key pressed to open the Browser Toolbox, used for debugging Firefox itself
+devtools-commandkey-browser-toolbox = I
+# Key pressed to open the Browser Console, used for debugging Firefox itself
+devtools-commandkey-browser-console = J
+# Key pressed to toggle on the Responsive Design Mode
+devtools-commandkey-responsive-design-mode = M
+# Key pressed to open a toolbox with the inspector panel selected
+devtools-commandkey-inspector = C
+# Key pressed to open a toolbox with the web console panel selected
+devtools-commandkey-webconsole = K
+# Key pressed to open a toolbox with the debugger panel selected
+devtools-commandkey-jsdebugger = Z
+# Key pressed to open a toolbox with the network monitor panel selected
+devtools-commandkey-netmonitor = E
+# Key pressed to open a toolbox with the style editor panel selected
+devtools-commandkey-styleeditor = VK_F7
+# Key pressed to open a toolbox with the performance panel selected
+devtools-commandkey-performance = VK_F5
+# Key pressed to open a toolbox with the storage panel selected
+devtools-commandkey-storage = VK_F9
+# Key pressed to open a toolbox with the DOM panel selected
+devtools-commandkey-dom = W
+# Key pressed to open a toolbox with the accessibility panel selected
+devtools-commandkey-accessibility-f12 = VK_F12
+# Key pressed to start or stop the performance profiler
+devtools-commandkey-profiler-start-stop = VK_1
+# Key pressed to capture a recorded performance profile
+devtools-commandkey-profiler-capture = VK_2
+# Key pressed to toggle the JavaScript tracing
+devtools-commandkey-javascript-tracing-toggle = VK_5
diff --git a/l10n-en-GB/dom/chrome/accessibility/AccessFu.properties b/l10n-en-GB/dom/chrome/accessibility/AccessFu.properties
new file mode 100644
index 0000000000..53c64d3b2a
--- /dev/null
+++ b/l10n-en-GB/dom/chrome/accessibility/AccessFu.properties
@@ -0,0 +1,112 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this file,
+# You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# Roles
+menubar        =       menu bar
+scrollbar      =       scroll bar
+grip           =       grip
+alert          =       alert
+menupopup      =       menu popup
+document       =       document
+pane           =       pane
+dialog         =       dialogue
+separator      =       separator
+toolbar        =       toolbar
+statusbar      =       status bar
+table          =       table
+columnheader   =       column header
+rowheader      =       row header
+column         =       column
+row            =       row
+cell           =       cell
+link           =       link
+list           =       list
+listitem       =       list item
+outline        =       outline
+outlineitem    =       outline item
+pagetab        =       tab
+propertypage   =       property page
+graphic        =       graphic
+switch         =       switch
+pushbutton     =       button
+checkbutton    =       tick button
+radiobutton    =       radio button
+combobox       =       combo box
+progressbar    =       progress bar
+slider         =       slider
+spinbutton     =       spin button
+diagram        =       diagram
+animation      =       animation
+equation       =       equation
+buttonmenu     =       button menu
+whitespace     =       white space
+pagetablist    =       page tab list
+canvas         =       canvas
+checkmenuitem  =       tick menu item
+passwordtext   =       password text
+radiomenuitem  =       radio menu item
+textcontainer  =       text container
+togglebutton   =       toggle button
+treetable      =       tree table
+header         =       header
+footer         =       footer
+paragraph      =       paragraph
+entry          =       entry
+caption        =       caption
+heading        =       heading
+section        =       section
+form           =       form
+comboboxlist   =       combo box list
+comboboxoption =       combo box option
+imagemap       =       image map
+listboxoption  =       list box option
+listbox        =       list box
+flatequation   =       flat equation
+gridcell       =       gridcell
+note           =       note
+figure         =       figure
+definitionlist =       definition list
+term           =       term
+definition     =       definition
+
+mathmltable              = math table
+mathmlcell               = cell
+mathmlenclosed           = enclosed
+mathmlfraction           = fraction
+mathmlfractionwithoutbar = fraction without bar
+mathmlroot               = root
+mathmlscripted           = scripted
+mathmlsquareroot         = square root
+
+# More sophisticated roles which are not actual numeric roles
+textarea       =       text area
+
+base           =       base
+close-fence    =       closing fence
+denominator    =       denominator
+numerator      =       numerator
+open-fence     =       opening fence
+overscript     =       overscript
+presubscript   =       presubscript
+presuperscript =       presuperscript
+root-index     =       root index
+subscript      =       subscript
+superscript    =       superscript
+underscript    =       underscript
+
+# More sophisticated object descriptions
+headingLevel   =       heading level %S
+
+# Landmark announcements
+banner         =       banner
+complementary  =       complementary
+contentinfo    =       content info
+main           =       main
+navigation     =       navigation
+search         =       search
+
+region         =       region
+
+stateRequired    =    required
+
diff --git a/l10n-en-GB/dom/chrome/accessibility/mac/accessible.properties b/l10n-en-GB/dom/chrome/accessibility/mac/accessible.properties
new file mode 100644
index 0000000000..d8bf28cfa3
--- /dev/null
+++ b/l10n-en-GB/dom/chrome/accessibility/mac/accessible.properties
@@ -0,0 +1,71 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+jump    =       Jump
+press   =       Press
+check   =       Tick
+uncheck =       Untick
+select  =       Select
+open    =       Open
+close   =       Close
+switch  =       Switch
+click   =       Click
+collapse=       Collapse
+expand  =       Expand
+activate=       Activate
+cycle   =       Cycle
+# An action provided to accessibility clients such as screen readers to allow
+# them to click an element when the click will be handled by a container
+# (ancestor) element. This is not normally reported to users.
+click ancestor = Click ancestor
+
+# Universal Access API support
+# (Mac Only)
+# The Role Description for AXWebArea (the web widget). Like in Safari.
+htmlContent = HTML Content
+# The Role Description for the Tab button.
+tab     =       tab
+# The Role Description for definition list dl, dt and dd
+term    =       term
+definition =    definition
+# The Role Description for an input type="search" text field
+searchTextField = search text field
+# Role Description (exposed as AXTitle) for datepickers
+dateField =     date field
+# The Role Description for WAI-ARIA Landmarks
+application =   application
+search  =       search
+banner  =       banner
+navigation =    navigation
+complementary = complementary
+content =       content
+main    =       main
+# The (spoken) role description for various WAI-ARIA roles
+alert       =      alert
+alertDialog =      alert dialogue
+dialog      =      dialogue
+article     =      article
+document    =      document
+# The (spoken) role description for the WAI-ARIA figure role
+# https://w3c.github.io/aria/core-aam/core-aam.html#role-map-figure
+figure     =      figure
+# The (spoken) role description for the WAI-ARIA heading role
+# https://w3c.github.io/aria/core-aam/core-aam.html#role-map-heading
+heading     =      heading
+log         =      log
+marquee     =      marquee
+math        =      math
+note        =      note
+region      =      region
+status      =      application status
+timer       =      timer
+tooltip     =      tooltip
+separator    =      separator
+tabPanel     =      tab panel
+# The roleDescription for the html:mark element
+highlight = highlight
+# The roleDescription for the details element
+details = details
+# The roleDescription for the summary element
+summary = summary
diff --git a/l10n-en-GB/dom/chrome/accessibility/unix/accessible.properties b/l10n-en-GB/dom/chrome/accessibility/unix/accessible.properties
new file mode 100644
index 0000000000..7a0665712e
--- /dev/null
+++ b/l10n-en-GB/dom/chrome/accessibility/unix/accessible.properties
@@ -0,0 +1,21 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+jump    =       Jump
+press   =       Press
+check   =       Check
+uncheck =       Uncheck
+select  =       Select
+open    =       Open
+close   =       Close
+switch  =       Switch
+click   =       Click
+collapse=       Collapse
+expand  =       Expand
+activate=       Activate
+cycle   =       Cycle
+# An action provided to accessibility clients such as screen readers to allow
+# them to click an element when the click will be handled by a container
+# (ancestor) element. This is not normally reported to users.
+click ancestor = Click ancestor
diff --git a/l10n-en-GB/dom/chrome/accessibility/win/accessible.properties b/l10n-en-GB/dom/chrome/accessibility/win/accessible.properties
new file mode 100644
index 0000000000..7a0665712e
--- /dev/null
+++ b/l10n-en-GB/dom/chrome/accessibility/win/accessible.properties
@@ -0,0 +1,21 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+jump    =       Jump
+press   =       Press
+check   =       Check
+uncheck =       Uncheck
+select  =       Select
+open    =       Open
+close   =       Close
+switch  =       Switch
+click   =       Click
+collapse=       Collapse
+expand  =       Expand
+activate=       Activate
+cycle   =       Cycle
+# An action provided to accessibility clients such as screen readers to allow
+# them to click an element when the click will be handled by a container
+# (ancestor) element. This is not normally reported to users.
+click ancestor = Click ancestor
diff --git a/l10n-en-GB/dom/chrome/appstrings.properties b/l10n-en-GB/dom/chrome/appstrings.properties
new file mode 100644
index 0000000000..fb172b8a8a
--- /dev/null
+++ b/l10n-en-GB/dom/chrome/appstrings.properties
@@ -0,0 +1,37 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+malformedURI2=Please check that the URL is correct and try again.
+fileNotFound=The file %S cannot be found. Please check the location and try again.
+fileAccessDenied=The file at %S is not readable.
+dnsNotFound2=%S could not be found. Please check the name and try again.
+unknownProtocolFound=One of the following (%S) is not a registered protocol or is not allowed in this context.
+connectionFailure=The connection was refused when attempting to contact %S.
+netInterrupt=The connection to %S has terminated unexpectedly. Some data may have been transferred.
+netTimeout=The operation timed out when attempting to contact %S.
+redirectLoop=Redirection limit for this URL exceeded.  Unable to load the requested page.  This may be caused by cookies that are blocked.
+confirmRepostPrompt=To display this page, the application must send information that will repeat any action (such as a search or order confirmation) that was performed earlier.
+resendButton.label=Resend
+unknownSocketType=This document cannot be displayed unless you install the Personal Security Manager (PSM). Download and install PSM and try again, or contact your system administrator.
+netReset=The document contains no data.
+notCached=This document is no longer available.
+netOffline=This document cannot be displayed while offline. To go online, uncheck Work Offline from the File menu.
+isprinting=The document cannot change while Printing or in Print Preview.
+deniedPortAccess=Access to the port number given has been disabled for security reasons.
+proxyResolveFailure=The proxy server you have configured could not be found. Please check your proxy settings and try again.
+proxyConnectFailure=The connection was refused when attempting to contact the proxy server you have configured. Please check your proxy settings and try again.
+contentEncodingError=The page you are trying to view cannot be shown because it uses an invalid or unsupported form of compression.
+unsafeContentType=The page you are trying to view cannot be shown because it is contained in a file type that may not be safe to open. Please contact the web site owners to inform them of this problem.
+malwareBlocked=The site at %S has been reported as an attack site and has been blocked based on your security preferences.
+harmfulBlocked=The site at %S has been reported as a potentially harmful site and has been blocked based on your security preferences.
+unwantedBlocked=The site at %S has been reported as serving unwanted software and has been blocked based on your security preferences.
+deceptiveBlocked=This web page at %S has been reported as a deceptive site and has been blocked based on your security preferences.
+cspBlocked=This page has a content security policy that prevents it from being loaded in this way.
+xfoBlocked=This page has an X-Frame-Options policy that prevents it from being loaded in this context.
+corruptedContentErrorv2=The site at %S has experienced a network protocol violation that cannot be repaired.
+sslv3Used=The safety of your data on %S could not be guaranteed because it uses SSLv3, a broken security protocol.
+weakCryptoUsed=The owner of %S has configured their web site improperly. To protect your information from being stolen, the connection to this web site has not been established.
+inadequateSecurityError=The web site tried to negotiate an inadequate level of security.
+blockedByPolicy=Your organisation has blocked access to this page or web site.
+networkProtocolError=Firefox has experienced a network protocol violation that cannot be repaired.
diff --git a/l10n-en-GB/dom/chrome/dom/dom.properties b/l10n-en-GB/dom/chrome/dom/dom.properties
new file mode 100644
index 0000000000..cc94034464
--- /dev/null
+++ b/l10n-en-GB/dom/chrome/dom/dom.properties
@@ -0,0 +1,478 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+KillScriptTitle=Warning: Unresponsive script
+KillScriptMessage=A script on this page may be busy, or it may have stopped responding. You can stop the script now, or you can continue to see if the script will complete.
+KillScriptWithDebugMessage=A script on this page may be busy, or it may have stopped responding. You can stop the script now, open the script in the debugger, or let the script continue.
+KillScriptLocation=Script: %S
+
+KillAddonScriptTitle=Warning: Unresponsive add-on script
+# LOCALIZATION NOTE (KillAddonScriptMessage): %1$S is the name of an extension.
+# %2$S is the name of the application (e.g., Firefox).
+KillAddonScriptMessage=A script from the extension “%1$S” is running on this page, and making %2$S unresponsive.\n\nIt may be busy, or it may have stopped responding permanently. You can stop the script now, or you can continue to see if it will complete.
+KillAddonScriptGlobalMessage=Prevent the extension script from running on this page until it next reloads
+
+StopScriptButton=Stop script
+DebugScriptButton=Debug script
+WaitForScriptButton=Continue
+DontAskAgain=&Don't ask me again
+WindowCloseBlockedWarning=Scripts may not close windows that were not opened by script.
+OnBeforeUnloadTitle=Are you sure?
+OnBeforeUnloadMessage2=This page is asking you to confirm that you want to leave — information you’ve entered may not be saved.
+OnBeforeUnloadStayButton=Stay on Page
+OnBeforeUnloadLeaveButton=Leave Page
+EmptyGetElementByIdParam=Empty string passed to getElementById().
+SpeculationFailed2=An unbalanced tree was written using document.write() causing data from the network to be reparsed. More information: https://developer.mozilla.org/en-US/docs/Glossary/speculative_parsing
+DocumentWriteIgnored=A call to document.write() from an asynchronously-loaded external script was ignored.
+# LOCALIZATION NOTE (EditorFileDropFailed): Do not translate contenteditable, %S is the error message explaining why the drop failed.
+EditorFileDropFailed=Dropping a file into a contenteditable element failed: %S.
+FormValidationTextTooLong=Please shorten this text to %S characters or less (you are currently using %S characters).
+FormValidationTextTooShort=Please use at least %S characters (you are currently using %S characters).
+FormValidationValueMissing=Please fill in this field.
+FormValidationCheckboxMissing=Please tick this box if you want to proceed.
+FormValidationRadioMissing=Please select one of these options.
+FormValidationFileMissing=Please select a file.
+FormValidationSelectMissing=Please select an item in the list.
+FormValidationInvalidEmail=Please enter an email address.
+FormValidationInvalidURL=Please enter a URL.
+FormValidationInvalidDate=Please enter a valid date.
+FormValidationInvalidTime=Please enter a valid time.
+FormValidationInvalidDateTime=Please enter valid date and time.
+FormValidationInvalidDateMonth=Please enter a valid month.
+FormValidationInvalidDateWeek=Please enter a valid week.
+FormValidationPatternMismatch=Please match the requested format.
+# LOCALIZATION NOTE (FormValidationPatternMismatchWithTitle): %S is the (possibly truncated) title attribute value.
+FormValidationPatternMismatchWithTitle=Please match the requested format: %S.
+# LOCALIZATION NOTE (FormValidationNumberRangeOverflow): %S is a number.
+FormValidationNumberRangeOverflow=Please select a value that is no more than %S.
+# LOCALIZATION NOTE (FormValidationDateTimeRangeOverflow): %S is a date or a time.
+FormValidationDateTimeRangeOverflow=Please select a value that is no later than %S.
+# LOCALIZATION NOTE (FormValidationNumberRangeUnderflow): %S is a number.
+FormValidationNumberRangeUnderflow=Please select a value that is no less than %S.
+# LOCALIZATION NOTE (FormValidationDateTimeRangeUnderflow): %S is a date or a time.
+FormValidationDateTimeRangeUnderflow=Please select a value that is no earlier than %S.
+# LOCALIZATION NOTE (FormValidationStepMismatch): both %S can be a number, a date or a time.
+FormValidationStepMismatch=Please select a valid value. The two nearest valid values are %S and %S.
+# LOCALIZATION NOTE (FormValidationStepMismatchOneValue): %S can be a number, a date or a time. This is called instead of FormValidationStepMismatch when the second value is the same as the first.
+FormValidationStepMismatchOneValue=Please select a valid value. The nearest valid value is %S.
+# LOCALIZATION NOTE (FormValidationTimeReversedRangeUnderflowAndOverflow): %1$S,%2$S are time.
+FormValidationTimeReversedRangeUnderflowAndOverflow=Please select a value between %1$S and %2$S.
+FormValidationBadInputNumber=Please enter a number.
+FullscreenDeniedDisabled=Request for fullscreen was denied because Fullscreen API is disabled by user preference.
+FullscreenDeniedFocusedPlugin=Request for fullscreen was denied because a windowed plugin is focused.
+FullscreenDeniedHidden=Request for fullscreen was denied because the document is no longer visible.
+FullscreenDeniedHTMLDialog=Request for fullscreen was denied because requesting element is a <dialog> element.
+FullscreenDeniedContainerNotAllowed=Request for fullscreen was denied because at least one of the document's containing elements is not an iframe or does not have an "allowfullscreen" attribute.
+FullscreenDeniedNotInputDriven=Request for fullscreen was denied because Element.requestFullscreen() was not called from inside a short running user-generated event handler.
+FullscreenDeniedMouseEventOnlyLeftBtn=Request for fullscreen was denied because Element.requestFullscreen() was called from inside a mouse event handler not triggered by left mouse button.
+FullscreenDeniedNotHTMLSVGOrMathML=Request for fullscreen was denied because requesting element is not <svg>, <math>, or an HTML element.
+FullscreenDeniedNotInDocument=Request for fullscreen was denied because requesting element is no longer in its document.
+FullscreenDeniedMovedDocument=Request for fullscreen was denied because requesting element has moved document.
+FullscreenDeniedLostWindow=Request for fullscreen was denied because we no longer have a window.
+FullscreenDeniedPopoverOpen=Request for fullscreen was denied because the element is already open as a popover.
+FullscreenDeniedSubDocFullscreen=Request for fullscreen was denied because a subdocument of the document requesting fullscreen is already fullscreen.
+FullscreenDeniedNotFocusedTab=Request for fullscreen was denied because requesting element is not in the currently focused tab.
+FullscreenDeniedFeaturePolicy=Request for fullscreen was denied because of FeaturePolicy directives.
+FullscreenExitWindowFocus=Exited fullscreen because a window was focused.
+RemovedFullscreenElement=Exited fullscreen because fullscreen element was removed from document.
+FocusedWindowedPluginWhileFullscreen=Exited fullscreen because windowed plugin was focused.
+PointerLockDeniedDisabled=Request for pointer lock was denied because Pointer Lock API is disabled by user preference.
+PointerLockDeniedInUse=Request for pointer lock was denied because the pointer is currently controlled by a different document.
+PointerLockDeniedNotInDocument=Request for pointer lock was denied because the requesting element is not in a document.
+PointerLockDeniedSandboxed=Request for pointer lock was denied because Pointer Lock API is restricted via sandbox.
+PointerLockDeniedHidden=Request for pointer lock was denied because the document is not visible.
+PointerLockDeniedNotFocused=Request for pointer lock was denied because the document is not focused.
+PointerLockDeniedMovedDocument=Request for pointer lock was denied because the requesting element has moved document.
+PointerLockDeniedNotInputDriven=Request for pointer lock was denied because Element.requestPointerLock() was not called from inside a short running user-generated event handler, and the document is not in full screen.
+PointerLockDeniedFailedToLock=Request for pointer lock was denied because the browser failed to lock the pointer.
+HTMLSyncXHRWarning=HTML parsing in XMLHttpRequest is not supported in the synchronous mode.
+# LOCALIZATION NOTE: %S is the name of the header in question
+ForbiddenHeaderWarning=Attempt to set a forbidden header was denied: %S
+ResponseTypeSyncXHRWarning=Use of XMLHttpRequest's responseType attribute is no longer supported in the synchronous mode in window context.
+TimeoutSyncXHRWarning=Use of XMLHttpRequest's timeout attribute is not supported in the synchronous mode in window context.
+# LOCALIZATION NOTE: Do not translate navigator.sendBeacon, unload, pagehide, or XMLHttpRequest.
+UseSendBeaconDuringUnloadAndPagehideWarning=Use of navigator.sendBeacon instead of synchronous XMLHttpRequest during unload and pagehide improves user experience.
+JSONCharsetWarning=An attempt was made to declare a non-UTF-8 encoding for JSON retrieved using XMLHttpRequest. Only UTF-8 is supported for decoding JSON.
+# LOCALIZATION NOTE: Do not translate HTMLMediaElement and createMediaElementSource.
+MediaElementAudioSourceNodeCrossOrigin=The HTMLMediaElement passed to createMediaElementSource has a cross-origin resource, the node will output silence.
+# LOCALIZATION NOTE: Do not translate MediaStream and createMediaStreamSource.
+MediaStreamAudioSourceNodeCrossOrigin=The MediaStream passed to createMediaStreamSource has a cross-origin resource, the node will output silence.
+# LOCALIZATION NOTE : Do not translate MediaStreamTrack and createMediaStreamTrackSource.
+MediaStreamTrackAudioSourceNodeCrossOrigin=The MediaStreamTrack passed to createMediaStreamTrackSource is a cross-origin resource, the node will output silence.
+# LOCALIZATION NOTE: Do not translate HTMLMediaElement and MediaStream.
+MediaElementAudioCaptureOfMediaStreamError=The captured HTMLMediaElement is playing a MediaStream. Applying volume or mute status is not currently supported.
+# LOCALIZATION NOTE: Do not translate HTMLMediaElement and MediaStream.
+MediaElementStreamCaptureCycle=The MediaStream assigned to srcObject comes from a capture of this HTMLMediaElement, forming a cycle, assignment ignored.
+MediaLoadExhaustedCandidates=All candidate resources failed to load. Media load paused.
+MediaLoadSourceMissingSrc=<source> element has no "src" attribute. Media resource load failed.
+MediaStreamAudioSourceNodeDifferentRate=Connecting AudioNodes from AudioContexts with different sample-rate is currently not supported.
+# LOCALIZATION NOTE: %1$S is the Http error code the server returned (e.g. 404, 500, etc), %2$S is the URL of the media resource which failed to load.
+MediaLoadHttpError=HTTP load failed with status %1$S. Load of media resource %2$S failed.
+# LOCALIZATION NOTE: %S is the URL of the media resource which failed to load.
+MediaLoadInvalidURI=Invalid URI. Load of media resource %S failed.
+# LOCALIZATION NOTE: %1$S is the media resource's format/codec type (basically equivalent to the file type, e.g. MP4,AVI,WMV,MOV etc), %2$S is the URL of the media resource which failed to load.
+MediaLoadUnsupportedTypeAttribute=Specified "type" attribute of "%1$S" is not supported. Load of media resource %2$S failed.
+MediaLoadUnsupportedTypeAttributeLoadingNextChild=Specified “type” attribute of “%1$S” is not supported. Load of media resource %2$S failed. Trying to load from next <source> element.
+# LOCALIZATION NOTE: %1$S is the MIME type HTTP header being sent by the web server, %2$S is the URL of the media resource which failed to load.
+MediaLoadUnsupportedMimeType=HTTP "Content-Type" of "%1$S" is not supported. Load of media resource %2$S failed.
+# LOCALIZATION NOTE: %S is the URL of the media resource which failed to load because of error in decoding.
+MediaLoadDecodeError=Media resource %S could not be decoded.
+MediaWidevineNoWMF=Trying to play Widevine with no Windows Media Foundation. See https://support.mozilla.org/kb/fix-video-audio-problems-firefox-windows
+# LOCALIZATION NOTE: %S is a comma-separated list of codecs (e.g. 'video/mp4, video/webm')
+MediaWMFNeeded=To play video formats %S, you need to install extra Microsoft software, see https://support.mozilla.org/kb/fix-video-audio-problems-firefox-windows
+# LOCALIZATION NOTE: %S is a comma-separated list of codecs (e.g. 'video/mp4, video/webm')
+MediaPlatformDecoderNotFound=The video on this page can't be played. Your system may not have the required video codecs for: %S
+MediaUnsupportedLibavcodec=The video on this page can’t be played. Your system has an unsupported version of libavcodec
+# LOCALIZATION NOTE: %1$S is the URL of the media resource, %2$S is technical information (in English)
+MediaDecodeError=Media resource %1$S could not be decoded, error: %2$S
+# LOCALIZATION NOTE: %1$S is the URL of the media resource, %2$S is technical information (in English)
+MediaDecodeWarning=Media resource %1$S could be decoded, but with error: %2$S
+# LOCALIZATION NOTE: %S is a comma-separated list of codecs (e.g. 'video/mp4, video/webm')
+MediaCannotPlayNoDecoders=Cannot play media. No decoders for requested formats: %S
+# LOCALIZATION NOTE: %S is a comma-separated list of codecs (e.g. 'video/mp4, video/webm')
+MediaNoDecoders=No decoders for some of the requested formats: %S
+MediaCannotInitializePulseAudio=Unable to use PulseAudio
+# LOCALIZATION NOTE: %S is the URL of the web page which is not served on HTTPS and thus is not encrypted and considered insecure.
+MediaEMEInsecureContextDeprecatedWarning=Using Encrypted Media Extensions at %S on an insecure (i.e. non-HTTPS) context is deprecated and will soon be removed. You should consider switching to a secure origin such as HTTPS.
+# LOCALIZATION NOTE: %S is the URL of the web page which is calling web APIs without passing data (either an audioCapabilities or a videoCapabilities) that will soon be required. See https://bugzilla.mozilla.org/show_bug.cgi?id=1368583#c21 for explanation of this string.
+MediaEMENoCapabilitiesDeprecatedWarning=Calling navigator.requestMediaKeySystemAccess() (at %S) without passing a candidate MediaKeySystemConfiguration containing audioCapabilities or videoCapabilities is deprecated and will soon become unsupported.
+# LOCALIZATION NOTE: %S is the URL of the web page which is calling web APIs without passing data (a "codecs" string in the "contentType") that will soon be required. See https://bugzilla.mozilla.org/show_bug.cgi?id=1368583#c21 for explanation of this string.
+MediaEMENoCodecsDeprecatedWarning=Calling navigator.requestMediaKeySystemAccess() (at %S) passing a candidate MediaKeySystemConfiguration containing audioCapabilities or videoCapabilities without a contentType with a “codecs” string is deprecated and will soon become unsupported.
+# LOCALIZATION NOTE: Do not translate "Mutation Event" and "MutationObserver"
+MutationEventWarning=Use of Mutation Events is deprecated. Use MutationObserver instead.
+BlockAutoplayError=Autoplay is only allowed when approved by the user, the site is activated by the user, or media is muted.
+BlockAutoplayWebAudioStartError=An AudioContext was prevented from starting automatically. It must be created or resumed after a user gesture on the page.
+# LOCALIZATION NOTE: Do not translate "Components"
+ComponentsWarning=The Components object is deprecated. It will soon be removed.
+PluginHangUITitle=Warning: Unresponsive plugin
+PluginHangUIMessage=%S may be busy, or it may have stopped responding. You can stop the plugin now, or you can continue to see if the plugin will complete.
+PluginHangUIWaitButton=Continue
+PluginHangUIStopButton=Stop plugin
+# LOCALIZATION NOTE: Do not translate "NodeIterator" or "detach()".
+NodeIteratorDetachWarning=Calling detach() on a NodeIterator no longer has an effect.
+# LOCALIZATION NOTE: Do not translate "LenientThis" and "this"
+LenientThisWarning=Ignoring get or set of property that has [LenientThis] because the "this" object is incorrect.
+# LOCALIZATION NOTE: Do not translate "captureEvents()" or "addEventListener()"
+UseOfCaptureEventsWarning=Use of captureEvents() is deprecated. To upgrade your code, use the DOM 2 addEventListener() method. For more help http://developer.mozilla.org/en/docs/DOM:element.addEventListener
+# LOCALIZATION NOTE: Do not translate "releaseEvents()" or "removeEventListener()"
+UseOfReleaseEventsWarning=Use of releaseEvents() is deprecated. To upgrade your code, use the DOM 2 removeEventListener() method. For more help http://developer.mozilla.org/en/docs/DOM:element.removeEventListener
+# LOCALIZATION NOTE: Do not translate "XMLHttpRequest"
+SyncXMLHttpRequestWarning=Synchronous XMLHttpRequest on the main thread is deprecated because of its detrimental effects to the end user's experience. For more help http://xhr.spec.whatwg.org/
+# LOCALIZATION NOTE: Do not translate "XMLHttpRequest"
+SyncXMLHttpRequestDeprecatedWarning=Synchronous XMLHttpRequest on the main thread is deprecated because of its detrimental effects to the end user’s experience. For more help https://xhr.spec.whatwg.org/#sync-warning
+# LOCALIZATION NOTE: Do not translate "window.controllers/Controllers"
+Window_Cc_ontrollersWarning=window.controllers/Controllers is deprecated. Do not use it for UA detection.
+ImportXULIntoContentWarning=Importing XUL nodes into a content document is deprecated. This functionality may be removed soon.
+# LOCALIZATION NOTE: Do not translate "IndexedDB".
+IndexedDBTransactionAbortNavigation=An IndexedDB transaction that was not yet complete has been aborted due to page navigation.
+# LOCALIZATION NOTE: Do not translate Will-change, %1$S,%2$S are numbers.
+IgnoringWillChangeOverBudgetWarning=Will-change memory consumption is too high. Budget limit is the document surface area multiplied by %1$S (%2$S px). Occurrences of will-change over the budget will be ignored.
+# LOCALIZATION NOTE: Do not translate "Worker".
+HittingMaxWorkersPerDomain2=A Worker could not be started immediately because other documents in the same origin are already using the maximum number of workers. The Worker is now queued and will be started after some of the other workers have completed.
+# LOCALIZATION NOTE: Do not translate "Application Cache API", "AppCache" and "ServiceWorker".
+AppCacheWarning=The Application Cache API (AppCache) is deprecated and will be removed at a future date.  Please consider using ServiceWorker for offline support.
+# LOCALIZATION NOTE: Do not translate "Worker".
+EmptyWorkerSourceWarning=Attempting to create a Worker from an empty source. This is probably unintentional.
+NavigatorGetUserMediaWarning=navigator.mozGetUserMedia has been replaced by navigator.mediaDevices.getUserMedia
+# LOCALIZATION NOTE: Do not translate "RTCPeerConnection", "getLocalStreams", "getRemoteStreams", "getSenders" or "getReceivers".
+RTCPeerConnectionGetStreamsWarning=RTCPeerConnection.getLocalStreams/getRemoteStreams are deprecated. Use RTCPeerConnection.getSenders/getReceivers instead.
+# LOCALIZATION NOTE: Do not translate "ServiceWorker". %S is a URL.
+InterceptionFailedWithURL=Failed to load '%S'. A ServiceWorker intercepted the request and encountered an unexpected error.
+# LOCALIZATION NOTE: Do not translate "ServiceWorker", "cors", "Response", "same-origin" or "Request". %1$S is a URL, %2$S is a URL.
+CorsResponseForSameOriginRequest=Failed to load ‘%1$S’ by responding ‘%2$S’. A ServiceWorker is not allowed to synthesize a cors Response for a same-origin Request.
+# LOCALIZATION NOTE: Do not translate "ServiceWorker", "FetchEvent.respondWith()", "FetchEvent", "no-cors", "opaque", "Response", or "RequestMode". %1$S is a URL. %2$S is a RequestMode value.
+BadOpaqueInterceptionRequestModeWithURL=Failed to load '%1$S'. A ServiceWorker passed an opaque Response to FetchEvent.respondWith() while handling a '%2$S' FetchEvent. Opaque Response objects are only valid when the RequestMode is 'no-cors'.
+# LOCALIZATION NOTE: Do not translate "ServiceWorker", "Error", "Response", "FetchEvent.respondWith()", or "fetch()". %S is a URL.
+InterceptedErrorResponseWithURL=Failed to load '%S'. A ServiceWorker passed an Error Response to FetchEvent.respondWith(). This typically means the ServiceWorker performed an invalid fetch() call.
+# LOCALIZATION NOTE: Do not translate "ServiceWorker", "Response", "FetchEvent.respondWith()", or "Response.clone()". %S is a URL.
+InterceptedUsedResponseWithURL=Failed to load '%S'. A ServiceWorker passed a used Response to FetchEvent.respondWith(). The body of a Response may only be read once. Use Response.clone() to access the body multiple times.
+# LOCALIZATION NOTE: Do not translate "ServiceWorker", "opaqueredirect", "Response", "FetchEvent.respondWith()", or "FetchEvent". %S is a URL.
+BadOpaqueRedirectInterceptionWithURL=Failed to load '%S'. A ServiceWorker passed an opaqueredirect Response to FetchEvent.respondWith() while handling a non-navigation FetchEvent.
+# LOCALIZATION NOTE: Do not translate "ServiceWorker", "Response", "FetchEvent.respondWith()", "RedirectMode" or "follow". %S is a URL.
+BadRedirectModeInterceptionWithURL=Failed to load ‘%S’. A ServiceWorker passed a redirected Response to FetchEvent.respondWith() while RedirectMode is not ‘follow’.
+# LOCALIZATION NOTE: Do not translate "ServiceWorker" or "FetchEvent.preventDefault()". %S is a URL.
+InterceptionCanceledWithURL=Failed to load '%S'. A ServiceWorker cancelled the load by calling FetchEvent.preventDefault().
+# LOCALIZATION NOTE: Do not translate "ServiceWorker", "promise", or "FetchEvent.respondWith()". %1$S is a URL. %2$S is an error string.
+InterceptionRejectedResponseWithURL=Failed to load '%1$S'. A ServiceWorker passed a promise to FetchEvent.respondWith() that rejected with '%2$S'.
+# LOCALIZATION NOTE: Do not translate "ServiceWorker", "promise", "FetchEvent.respondWith()", or "Response". %1$S is a URL. %2$S is an error string.
+InterceptedNonResponseWithURL=Failed to load '%1$S'. A ServiceWorker passed a promise to FetchEvent.respondWith() that resolved with non-Response value '%2$S'.
+
+# LOCALIZATION NOTE: Do not translate "ServiceWorker", "Service-Worker-Allowed" or "HTTP". %1$S and %2$S are URLs.
+ServiceWorkerScopePathMismatch=Failed to register a ServiceWorker: The path of the provided scope '%1$S' is not under the max scope allowed '%2$S'. Adjust the scope, move the Service Worker script, or use the Service-Worker-Allowed HTTP header to allow the scope.
+# LOCALIZATION NOTE: Do not translate "ServiceWorker". %1$S is a URL representing the scope of the ServiceWorker, %2$S is a stringified numeric HTTP status code like "404" and %3$S is a URL.
+ServiceWorkerRegisterNetworkError=Failed to register/update a ServiceWorker for scope ‘%1$S’: Load failed with status %2$S for script ‘%3$S’.
+# LOCALIZATION NOTE: Do not translate "ServiceWorker". %1$S is a URL representing the scope of the ServiceWorker, %2$S is a MIME Media Type like "text/plain" and %3$S is a URL.
+ServiceWorkerRegisterMimeTypeError2=Failed to register/update a ServiceWorker for scope ‘%1$S’: Bad Content-Type of ‘%2$S’ received for script ‘%3$S’.  Must be a JavaScript MIME type.
+# LOCALIZATION NOTE: Do not translate "ServiceWorker". %S is a URL representing the scope of the ServiceWorker.
+ServiceWorkerRegisterStorageError=Failed to register/update a ServiceWorker for scope ‘%S’: Storage access is restricted in this context due to user settings or private browsing mode.
+ServiceWorkerGetRegistrationStorageError=Failed to get service worker registration(s): Storage access is restricted in this context due to user settings or private browsing mode.
+ServiceWorkerGetClientStorageError=Failed to get service worker’s client(s): Storage access is restricted in this context due to user settings or private browsing mode.
+# LOCALIZATION NOTE: Do not translate "ServiceWorker" and "postMessage". %S is a URL representing the scope of the ServiceWorker.
+ServiceWorkerPostMessageStorageError=The ServiceWorker for scope ‘%S’ failed to execute ‘postMessage‘ because storage access is restricted in this context due to user settings or private browsing mode.
+# LOCALIZATION NOTE: Do not translate "ServiceWorker". %1$S is a URL representing the scope of the ServiceWorker.
+ServiceWorkerGraceTimeoutTermination=Terminating ServiceWorker for scope ‘%1$S’ with pending waitUntil/respondWith promises because of grace timeout.
+# LOCALIZATION NOTE (ServiceWorkerNoFetchHandler): Do not translate "Fetch".
+ServiceWorkerNoFetchHandler=Fetch event handlers must be added during the worker script’s initial evaluation.
+ExecCommandCutCopyDeniedNotInputDriven=document.execCommand('cut'/'copy') was denied because it was not called from inside a short running user-generated event handler.
+ManifestIdIsInvalid=The id member did not resolve to a valid URL.
+ManifestIdNotSameOrigin=The id member must have the same origin as the start_url member.
+ManifestShouldBeObject=Manifest should be an object.
+ManifestScopeURLInvalid=The scope URL is invalid.
+ManifestScopeNotSameOrigin=The scope URL must be same origin as document.
+ManifestStartURLOutsideScope=The start URL is outside the scope, so the scope is invalid.
+ManifestStartURLInvalid=The start URL is invalid.
+ManifestStartURLShouldBeSameOrigin=The start URL must be same origin as document.
+# LOCALIZATION NOTE: %1$S is the name of the object whose property is invalid. %2$S is the name of the invalid property. %3$S is the expected type of the property value. E.g. "Expected the manifest's start_url member to be a string."
+ManifestInvalidType=Expected the %1$S's %2$S member to be a %3$S.
+# LOCALIZATION NOTE: %1$S is the name of the property whose value is invalid. %2$S is the (invalid) value of the property. E.g. "theme_color: 42 is not a valid CSS color."
+ManifestInvalidCSSColor=%1$S: %2$S is not a valid CSS colour.
+# LOCALIZATION NOTE: %1$S is the name of the property whose value is invalid. %2$S is the (invalid) value of the property. E.g. "lang: 42 is not a valid language code."
+ManifestLangIsInvalid=%1$S: %2$S is not a valid language code.
+# LOCALIZATION NOTE: %1$S is the name of the parent property whose value is invalid (e.g., "icons"). %2$S is the index of the image object that is invalid (from 0). %3$S is the name of actual member that is invalid. %4$S is the invalid value. E.g. "icons item at index 2 is invalid. The src member is an invalid URL http://:Invalid"
+ManifestImageURLIsInvalid=%1$S item at index %2$S is invalid. The %3$S member is an invalid URL %4$S
+# LOCALIZATION NOTE: %1$S is the name of the parent property that that contains the unusable image object (e.g., "icons"). %2$S is the index of the image object that is unusable (from 0). E.g. "icons item at index 2 lacks a usable purpose. It will be ignored."
+ManifestImageUnusable=%1$S item at index %2$S lacks a usable purpose. It will be ignored.
+# LOCALIZATION NOTE: %1$S is the name of the parent property that contains the unsupported value (e.g., "icons"). %2$S is the index of the image object that has the unsupported value (from 0). %3$S are the unknown purposes. E.g. "icons item at index 2 includes unsupported purpose(s): a b."
+ManifestImageUnsupportedPurposes=%1$S item at index %2$S includes unsupported purpose(s): %3$S.
+# LOCALIZATION NOTE: %1$S is the name of the parent property that has a repeated purpose (e.g., "icons"). %2$S is the index of the image object that has the repeated purpose (from 0). %3$S is the repeated purposes. E.g. "icons item at index 2 includes repeated purpose(s): a b."
+ManifestImageRepeatedPurposes=%1$S item at index %2$S includes repeated purpose(s): %3$S.
+PatternAttributeCompileFailure=Unable to check <input pattern='%S'> because the pattern is not a valid regexp: %S
+# LOCALIZATION NOTE: Do not translate "postMessage" or DOMWindow. %S values are origins, like https://domain.com:port
+TargetPrincipalDoesNotMatch=Failed to execute 'postMessage' on 'DOMWindow': The target origin provided ('%S') does not match the recipient window's origin ('%S').
+# LOCALIZATION NOTE: Do not translate 'YouTube'. %S values are origins, like https://domain.com:port
+RewriteYouTubeEmbed=Rewriting old-style YouTube Flash embed (%S) to iframe embed (%S). Please update page to use iframe instead of embed/object, if possible.
+# LOCALIZATION NOTE: Do not translate 'YouTube'. %S values are origins, like https://domain.com:port
+RewriteYouTubeEmbedPathParams=Rewriting old-style YouTube Flash embed (%S) to iframe embed (%S). Params were unsupported by iframe embeds and converted. Please update page to use iframe instead of embed/object, if possible.
+# LOCALIZATION NOTE: This error is reported when the "Encryption" header for an
+# incoming push message is missing or invalid. Do not translate "ServiceWorker",
+# "Encryption", and "salt". %1$S is the ServiceWorker scope URL.
+PushMessageBadEncryptionHeader=The ServiceWorker for scope ‘%1$S’ failed to decrypt a push message. The ‘Encryption’ header must include a unique ‘salt‘ parameter for each message. See https://tools.ietf.org/html/draft-ietf-httpbis-encryption-encoding-02#section-3.1 for more information.
+# LOCALIZATION NOTE: This error is reported when the "Crypto-Key" header for an
+# incoming push message is missing or invalid. Do not translate "ServiceWorker",
+# "Crypto-Key", and "dh". %1$S is the ServiceWorker scope URL.
+PushMessageBadCryptoKeyHeader=The ServiceWorker for scope ‘%1$S’ failed to decrypt a push message. The ‘Crypto-Key‘ header must include a ‘dh‘ parameter containing the app server’s public key. See https://tools.ietf.org/html/draft-ietf-httpbis-encryption-encoding-02#section-4 for more information.
+# LOCALIZATION NOTE: This error is reported when a push message fails to decrypt because the deprecated
+# "Encryption-Key" header for an incoming push message is missing or invalid.
+# Do not translate "ServiceWorker", "Encryption-Key", "dh", "Crypto-Key", and
+# "Content-Encoding: aesgcm". %1$S is the ServiceWorker scope URL.
+PushMessageBadEncryptionKeyHeader=The ServiceWorker for scope ‘%1$S’ failed to decrypt a push message. The ‘Encryption-Key’ header must include a ‘dh‘ parameter. This header is deprecated and will soon be removed. Please use ‘Crypto-Key‘ with ‘Content-Encoding: aesgcm‘ instead. See https://tools.ietf.org/html/draft-ietf-httpbis-encryption-encoding-02#section-4 for more information.
+# LOCALIZATION NOTE: This error is reported when a push message fails to decrypt
+# because the "Content-Encoding" header is missing or contains an
+# unsupported encoding. Do not translate "ServiceWorker", "Content-Encoding",
+# "aesgcm", and "aesgcm128". %1$S is the ServiceWorker scope URL.
+PushMessageBadEncodingHeader=The ServiceWorker for scope ‘%1$S’ failed to decrypt a push message. The ‘Content-Encoding‘ header must be ‘aesgcm‘. ‘aesgcm128‘ is allowed, but deprecated and will soon be removed. See https://tools.ietf.org/html/draft-ietf-httpbis-encryption-encoding-02#section-2 for more information.
+# LOCALIZATION NOTE: This error is reported when a push message fails to decrypt
+# because the "dh" parameter is not valid base64url. Do not translate
+# "ServiceWorker", "dh", "Crypto-Key", and "base64url". %1$S is the
+# ServiceWorker scope URL.
+PushMessageBadSenderKey=The ServiceWorker for scope ‘%1$S’ failed to decrypt a push message. The ‘dh‘ parameter in the ‘Crypto-Key‘ header must be the app server’s Diffie-Hellman public key, base64url-encoded (https://tools.ietf.org/html/rfc7515#appendix-C) and in “uncompressed” or “raw” form (65 bytes before encoding. See https://tools.ietf.org/html/draft-ietf-httpbis-encryption-encoding-02#section-4 for more information.
+# LOCALIZATION NOTE: This error is reported when a push message fails to decrypt
+# because the "salt" parameter is not valid base64url. Do not translate
+# "ServiceWorker", "salt", "Encryption", and "base64url". %1$S is the
+# ServiceWorker scope URL.
+PushMessageBadSalt=The ServiceWorker for scope ‘%1$S’ failed to decrypt a push message. The ‘salt‘ parameter in the ‘Encryption‘ header must be base64url-encoded (https://tools.ietf.org/html/rfc7515#appendix-C), and be at least 16 bytes before encoding. See https://tools.ietf.org/html/draft-ietf-httpbis-encryption-encoding-02#section-3.1 for more information.
+# LOCALIZATION NOTE: This error is reported when a push message fails to decrypt
+# because the "rs" parameter is not a number, or is less than the pad size.
+# Do not translate "ServiceWorker", "rs", or "Encryption". %1$S is the
+# ServiceWorker scope URL. %2$S is the minimum value (1 for aesgcm128, 2 for
+# aesgcm).
+PushMessageBadRecordSize=The ServiceWorker for scope ‘%1$S’ failed to decrypt a push message. The ‘rs‘ parameter of the ‘Encryption‘ header must be between %2$S and 2^36-31, or omitted entirely. See https://tools.ietf.org/html/draft-ietf-httpbis-encryption-encoding-02#section-3.1 for more information.
+# LOCALIZATION NOTE: This error is reported when a push message fails to decrypt
+# because an encrypted record is shorter than the pad size, the pad is larger
+# than the record, or any of the padding bytes are non-zero. Do not translate
+# "ServiceWorker". %1$S is the ServiceWorker scope URL. %2$S is the pad size
+# (1 for aesgcm128, 2 for aesgcm).
+PushMessageBadPaddingError=The ServiceWorker for scope ‘%1$S’ failed to decrypt a push message. A record in the encrypted message was not padded correctly. See https://tools.ietf.org/html/draft-ietf-httpbis-encryption-encoding-02#section-2 for more information.
+# LOCALIZATION NOTE: This error is reported when push message decryption fails
+# and no specific error info is available. Do not translate "ServiceWorker".
+# %1$S is the ServiceWorker scope URL.
+PushMessageBadCryptoError=The ServiceWorker for scope ‘%1$S’ failed to decrypt a push message. For help with encryption, please see https://developer.mozilla.org/docs/Web/API/Push_API/Using_the_Push_API#Encryption
+# LOCALIZATION NOTE: %1$S is the type of a DOM event. 'passive' is a literal parameter from the DOM spec.
+PreventDefaultFromPassiveListenerWarning=Ignoring ‘preventDefault()’ call on event of type ‘%1$S’ from a listener registered as ‘passive’.
+# LOCALIZATION NOTE: 'ImageBitmapRenderingContext.transferImageBitmap' and 'ImageBitmapRenderingContext.transferFromImageBitmap' should not be translated
+ImageBitmapRenderingContext_TransferImageBitmapWarning=ImageBitmapRenderingContext.transferImageBitmap is deprecated and will be removed soon. Use ImageBitmapRenderingContext.transferFromImageBitmap instead.
+IIRFilterChannelCountChangeWarning=IIRFilterNode channel count changes may produce audio glitches.
+BiquadFilterChannelCountChangeWarning=BiquadFilterNode channel count changes may produce audio glitches.
+# LOCALIZATION NOTE: Do not translate ".png"
+GenericImageNamePNG=image.png
+GenericFileName=file
+GeolocationInsecureRequestIsForbidden=A Geolocation request can only be fulfilled in a secure context.
+NotificationsInsecureRequestIsForbidden=The Notification permission may only be requested in a secure context.
+NotificationsCrossOriginIframeRequestIsForbidden=The Notification permission may only be requested in a top-level document or same-origin iframe.
+NotificationsRequireUserGesture=The Notification permission may only be requested from inside a short running user-generated event handler.
+NotificationsRequireUserGestureDeprecationWarning=Requesting Notification permission outside a short running user-generated event handler is deprecated and will not be supported in the future.
+# LOCALIZATION NOTE: Do not translate "content", "Window", and "window.top"
+WindowContentUntrustedWarning=The ‘content’ attribute of Window objects is deprecated.  Please use ‘window.top’ instead.
+# LOCALIZATION NOTE: The first %S is the tag name of the element that starts the loop, the second %S is the element's ID.
+SVGRefLoopWarning=The SVG <%S> with ID “%S” has a reference loop.
+# LOCALIZATION NOTE: The first %S is the tag name of the element in the chain where the chain was broken, the second %S is the element's ID.
+SVGRefChainLengthExceededWarning=An SVG <%S> reference chain which is too long was abandoned at the element with ID “%S”.
+# LOCALIZATION NOTE: Do not translate SVGSVGElement.deselectAll.
+SVGDeselectAll=SVGSVGElement.deselectAll is deprecated as it duplicates functionality from the Selection API.
+# LOCALIZATION NOTE: Do not translate SVGGraphicsElement.nearestViewportElement or SVGElement.viewportElement.
+SVGNearestViewportElement=SVGGraphicsElement.nearestViewportElement is deprecated and will be removed at a future date. Use SVGElement.viewportElement instead.
+# LOCALIZATION NOTE: Do not translate SVGGraphicsElement.farthestViewportElement.
+SVGFarthestViewportElement=SVGGraphicsElement.farthestViewportElement is deprecated and will be removed at a future date.
+# LOCALIZATION NOTE: Do not translate "<script>".
+ScriptSourceEmpty=‘%S’ attribute of <script> element is empty.
+# LOCALIZATION NOTE: Do not translate "<script>".
+ScriptSourceInvalidUri=‘%S’ attribute of <script> element is not a valid URI: “%S”
+# LOCALIZATION NOTE: Do not translate "<script>".
+ScriptSourceLoadFailed=Loading failed for the <script> with source “%S”.
+ModuleSourceLoadFailed=Loading failed for the module with source “%S”.
+# LOCALIZATION NOTE: Do not translate "<script>".
+ScriptSourceMalformed=<script> source URI is malformed: “%S”.
+ModuleSourceMalformed=Module source URI is malformed: “%S”.
+# LOCALIZATION NOTE: Do not translate "<script>".
+ScriptSourceNotAllowed=<script> source URI is not allowed in this document: “%S”.
+ModuleSourceNotAllowed=Module source URI is not allowed in this document: “%S”.
+WebExtContentScriptModuleSourceNotAllowed=WebExtension content scripts may only load modules with moz-extension URLs and not: “%S”.
+ModuleResolveFailureNoWarn=Error resolving module specifier “%S”.
+ModuleResolveFailureWarnRelative=Error resolving module specifier “%S”. Relative module specifiers must start with “./”, “../” or “/”.
+ImportMapInvalidTopLevelKey=An invalid top-level key “%S” was present in the import map.
+ImportMapEmptySpecifierKeys=Specifier keys cannot be empty strings.
+ImportMapAddressesNotStrings=Addresses need to be strings.
+ImportMapInvalidAddress=Address “%S” was invalid.
+# %1$S is the specifier key, %2$S is the URL.
+ImportMapAddressNotEndsWithSlash=An invalid address was given for the specifier key “%1$S”; since “%1$S” ended in a slash, the address “%2$S” needs to as well.
+ImportMapScopePrefixNotParseable=The scope prefix URL “%S” was not parseable.
+ImportMapResolutionBlockedByNullEntry=Resolution of specifier “%S” was blocked by a null entry.
+ImportMapResolutionBlockedByAfterPrefix=Resolution of specifier “%S” was blocked since the substring after prefix could not be parsed as a URL relative to the address in the import map.
+ImportMapResolutionBlockedByBacktrackingPrefix=Resolution of specifier “%S” was blocked since the parsed URL does not start with the address in the import map.
+ImportMapResolveInvalidBareSpecifierWarnRelative=The specifier “%S” was a bare specifier, but was not remapped to anything. Relative module specifiers must start with “./”, “../” or “/”.
+# LOCALIZATION NOTE: Do not translate "<script type='importmap'>", "src".
+ImportMapExternalNotSupported=External import maps are not supported: <script type='importmap'> with a src attribute is currently not supported.
+ImportMapNotAllowedMultiple=Multiple import maps are not allowed.
+ImportMapNotAllowedAfterModuleLoad=Import maps are not allowed after a module load or preload has started.
+# LOCALIZATION NOTE: %1$S is the invalid property value and %2$S is the property name.
+InvalidKeyframePropertyValue=Keyframe property value “%1$S” is invalid according to the syntax for “%2$S”.
+# LOCALIZATION NOTE: Do not translate "ReadableStream".
+ReadableStreamReadingFailed=Failed to read data from the ReadableStream: “%S”.
+# LOCALIZATION NOTE: Do not translate "registerProtocolHandler"
+RegisterProtocolHandlerPrivateBrowsingWarning=Can’t use registerProtocolHandler inside private browsing mode.
+MotionEventWarning=Use of the motion sensor is deprecated.
+OrientationEventWarning=Use of the orientation sensor is deprecated.
+ProximityEventWarning=Use of the proximity sensor is deprecated.
+AmbientLightEventWarning=Use of the ambient light sensor is deprecated.
+UnsupportedEntryTypesIgnored=Ignoring unsupported entryTypes: %S.
+AllEntryTypesIgnored=No valid entryTypes; aborting registration.
+# LOCALIZATION NOTE: do not localize key=“%S” modifiers=“%S” id=“%S”
+GTK2Conflict2=Key event not available on GTK2: key=“%S” modifiers=“%S” id=“%S”
+WinConflict2=Key event not available on some keyboard layouts: key=“%S” modifiers=“%S” id=“%S”
+# LOCALIZATION NOTE: do not translated "document.domain"
+DocumentSetDomainNotAllowedWarning=Setting document.domain in a cross-origin isolated environment is not allowed.
+
+#LOCALIZATION NOTE(DeprecatedTestingInterfaceWarning): Do not translate this message. It's just testing only.
+DeprecatedTestingInterfaceWarning=TestingDeprecatedInterface is a testing-only interface and this is its testing deprecation message.
+#LOCALIZATION NOTE(DeprecatedTestingMethodWarning): Do not translate this message. It's just testing only.
+DeprecatedTestingMethodWarning=TestingDeprecatedInterface.deprecatedMethod() is a testing-only method and this is its testing deprecation message.
+#LOCALIZATION NOTE(DeprecatedTestingAttributeWarning): Do not translate this message. It's just testing only.
+DeprecatedTestingAttributeWarning=TestingDeprecatedInterface.deprecatedAttribute is a testing-only attribute and this is its testing deprecation message.
+# LOCALIZATION NOTE (CreateImageBitmapCanvasRenderingContext2DWarning): Do not translate CanvasRenderingContext2D and createImageBitmap.
+CreateImageBitmapCanvasRenderingContext2DWarning=Use of CanvasRenderingContext2D in createImageBitmap is deprecated.
+
+# LOCALIZATION NOTE (DrawWindowCanvasRenderingContext2DWarning): Do not translate CanvasRenderingContext2D, drawWindow and tabs.captureTab.
+DrawWindowCanvasRenderingContext2DWarning=Use of drawWindow method from CanvasRenderingContext2D is deprecated. Use tabs.captureTab extensions API instead https://developer.mozilla.org/docs/Mozilla/Add-ons/WebExtensions/API/tabs/captureTab
+
+# LOCALIZATION NOTE (MozRequestFullScreenDeprecatedPrefixWarning): Do not translate mozRequestFullScreen.
+MozRequestFullScreenDeprecatedPrefixWarning=mozRequestFullScreen() is deprecated.
+# LOCALIZATION NOTE (MozfullscreenchangeDeprecatedPrefixWarning): Do not translate onmozfullscreenchange.
+MozfullscreenchangeDeprecatedPrefixWarning=onmozfullscreenchange is deprecated.
+# LOCALIZATION NOTE (MozfullscreenerrorDeprecatedPrefixWarning): Do not translate onmozfullscreenerror.
+MozfullscreenerrorDeprecatedPrefixWarning=onmozfullscreenerror is deprecated.
+# LOCALIZATION NOTE(External_AddSearchProviderWarning): Do not translate AddSearchProvider.
+External_AddSearchProviderWarning=AddSearchProvider is deprecated.
+
+# LOCALIZATION NOTE: Do not translate "MouseEvent.mozPressure" and "PointerEvent.pressure".
+MouseEvent_MozPressureWarning=MouseEvent.mozPressure is deprecated. Use PointerEvent.pressure instead.
+# LOCALIZATION NOTE: Do not translate small, normal, big and mathsize.
+MathML_DeprecatedMathSizeValueWarning=“small”, “normal” and “big” are deprecated values for the mathsize attribute and will be removed at a future date.
+# LOCALIZATION NOTE: Do not translate veryverythinmathspace, verythinmathspace,
+# thinmathspace, mediummathspace, thickmathspace, verythickmathspace, veryverythickmathspace and MathML.
+MathML_DeprecatedMathSpaceValueWarning=“veryverythinmathspace”, “verythinmathspace”, “thinmathspace”, “mediummathspace”, “thickmathspace”, “verythickmathspace” and “veryverythickmathspace” are deprecated values for MathML lengths and will be removed at a future date.
+# LOCALIZATION NOTE: Do not translate MathML, background, color, fontfamily, fontsize, fontstyle and fontweight.
+MathML_DeprecatedStyleAttributeWarning=MathML attributes “background”, “color”, “fontfamily”, “fontsize”, “fontstyle” and “fontweight” are deprecated and will be removed at a future date.
+# LOCALIZATION NOTE: Do not translate "MouseEvent.mozInputSource" and "PointerEvent.pointerType".
+MozInputSourceWarning=MouseEvent.mozInputSource is deprecated. Use PointerEvent.pointerType instead.
+# LOCALIZATION NOTE: Do not translate "initMouseEvent()" and "MouseEvent()".
+InitMouseEventWarning=initMouseEvent() is deprecated. Use the MouseEvent() constructor instead.
+# LOCALIZATION NOTE: Do not translate "initNSMouseEvent()" and "MouseEvent()".
+InitNSMouseEventWarning=initNSMouseEvent() is deprecated. Use the MouseEvent() constructor instead.
+# LOCALIZATION NOTE: Do not translate MathML. %S is the deprecated length value.
+MathML_DeprecatedMathSpaceValue2Warning=MathML length value “%S” is deprecated and will be removed at a future date.
+# LOCALIZATION NOTE: Do not translate mathvariant or MathML. %S is the deprecated value of the mathvariant attribute.
+MathML_DeprecatedMathVariantWarning=“mathvariant='%S'” on MathML elements is deprecated and will be removed at a future date.
+# LOCALIZATION NOTE: Do not translate MathML and STIXGeneral. %S is a documentation URL.
+MathML_DeprecatedStixgeneralOperatorStretchingWarning=Support for rendering stretched MathML operators with STIXGeneral fonts is deprecated and may be removed at a future date. For details about newer fonts that will continue to be supported, see %S
+# LOCALIZATION NOTE: Do not translate MathML and scriptminsize.
+MathML_DeprecatedScriptminsizeAttributeWarning=MathML attribute “scriptminsize” is deprecated and will be removed at a future date.
+# LOCALIZATION NOTE: Do not translate MathML and scriptsizemultiplier.
+MathML_DeprecatedScriptsizemultiplierAttributeWarning=MathML attribute “scriptsizemultiplier” is deprecated and will be removed at a future date.
+FormSubmissionUntrustedEventWarning=Form submission via untrusted submit event is deprecated and will be removed at a future date.
+
+# LOCALIZATION NOTE: Do not translate "sizeToContent()".
+SizeToContentWarning=sizeToContent() is deprecated and will be removed in the future.
+
+WebShareAPI_Failed=The share operation has failed.
+WebShareAPI_Aborted=The share operation was aborted.
+# LOCALIZATION NOTE (UnknownProtocolNavigationPrevented): %1$S is the destination URL.
+UnknownProtocolNavigationPrevented=Prevented navigation to “%1$S” due to an unknown protocol.
+PostMessageSharedMemoryObjectToCrossOriginWarning=Cannot post message containing a shared memory object to a cross-origin window.
+# LOCALIZATION NOTE: %S is the URL of the resource in question
+UnusedLinkPreloadPending=The resource at “%S” preloaded with link preload was not used within a few seconds. Make sure all attributes of the preload tag are set correctly.
+
+# LOCALIZATION NOTE: Do not translate document.requestStorageAccess(), iframe, allow-same-origin and sandbox (though you may translate "sandboxed").
+RequestStorageAccessNullPrincipal=document.requestStorageAccess() may not be called on a document with an opaque origin, such as a sandboxed iframe without allow-same-origin in its sandbox attribute.
+# LOCALIZATION NOTE: Do not translate document.requestStorageAccess(), iframe, allow-storage-access-by-user-activation and sandbox (though you may translate "sandboxed").
+RequestStorageAccessSandboxed=document.requestStorageAccess() may not be called in a sandboxed iframe without allow-storage-access-by-user-activation in its sandbox attribute.
+# LOCALIZATION NOTE: Do not translate document.requestStorageAccess() and iframe.
+RequestStorageAccessNested=document.requestStorageAccess() may not be called in a nested iframe.
+# LOCALIZATION NOTE: Do not translate document.requestStorageAccess(). In some locales it may be preferable to not translate "event handler", either.
+RequestStorageAccessUserGesture=document.requestStorageAccess() may only be requested from inside a short running user-generated event handler.
+# LOCALIZATION NOTE: Do not translate document.requestStorageAccess(), Permissions Policy and storage-access.
+RequestStorageAccessPermissionsPolicy=document.requestStorageAccess() may not be called where the storage-access feature is blocked by the Permissions Policy.
+# LOCALIZATION NOTE: Do not translate document.requestStorageAccess()
+RequestStorageAccessNotSecureContext=document.requestStorageAccess() may only grant access to secure contexts.
+# LOCALIZATION NOTE: Do not translate "Location" and "History".
+LocChangeFloodingPrevented=Too many calls to Location or History APIs within a short timeframe.
+FolderUploadPrompt.title = Confirm Upload
+# LOCALIZATION NOTE: %S is the name of the folder the user selected in the file picker.
+FolderUploadPrompt.message = Are you sure you want to upload all files from “%S”? Only do this if you trust the site.
+FolderUploadPrompt.acceptButtonLabel = Upload
+InputPickerBlockedNoUserActivation=<input> picker was blocked due to lack of user activation.
+ExternalProtocolFrameBlockedNoUserActivation=Iframe with external protocol was blocked due to lack of user activation, or because not enough time has passed since the last such iframe was loaded.
+MultiplePopupsBlockedNoUserActivation=Opening multiple popups was blocked due to lack of user activation.
+# LOCALIZATION NOTE: %S is the URL of the preload that was ignored.
+PreloadIgnoredInvalidAttr=Preload of %S was ignored due to unknown “as” or “type” values, or non-matching “media” attribute.
+# LOCALIZATION NOTE: %S is the blob URL. Don't translate "agent cluster".
+BlobDifferentClusterError=Cannot access blob URL “%S” from a different agent cluster.
+# LOCALIZATION NOTE: %S is the blob URL. Don't translate "partition key".
+PartitionKeyDifferentError=Cannot access blob URL “%S” with a different partition key.
+# LOCALIZATION NOTE: Do not translate "Element.setCapture()" and "Element.setPointerCapture()"".
+ElementSetCaptureWarning=Element.setCapture() is deprecated. Use Element.setPointerCapture() instead. For more help https://developer.mozilla.org/docs/Web/API/Element/setPointerCapture
+# LOCALIZATION NOTE: Do not translate "Element.releaseCapture()" and "Element.releasePointerCapture()".
+ElementReleaseCaptureWarning=Element.releaseCapture() is deprecated. Use Element.releasePointerCapture() instead. For more help https://developer.mozilla.org/docs/Web/API/Element/releasePointerCapture
+# LOCALIZATION NOTE: Do not translate "Document.releaseCapture()" and "Element.releasePointerCapture()".
+DocumentReleaseCaptureWarning=Document.releaseCapture() is deprecated. Use Element.releasePointerCapture() instead. For more help https://developer.mozilla.org/docs/Web/API/Element/releasePointerCapture
+
+# LOCALIZATION NOTE: Don't translate browser.runtime.lastError, %S is the error message from the unchecked value set on browser.runtime.lastError.
+WebExtensionUncheckedLastError=browser.runtime.lastError value was not checked: %S
+
+# LOCALIZATION NOTE: Do not translate "OffscreenCanvas.toBlob()" and "OffscreenCanvas.convertToBlob()".
+OffscreenCanvasToBlobWarning=OffscreenCanvas.toBlob() is deprecated. Use OffscreenCanvas.convertToBlob() instead.
+
+# LOCALIZATION NOTE: Do not translate "InstallTrigger"
+InstallTriggerDeprecatedWarning=InstallTrigger is deprecated and will be removed in the future.
+# LOCALIZATION NOTE: Do not translate "InstallTrigger.install()"
+InstallTriggerInstallDeprecatedWarning=InstallTrigger.install() is deprecated and will be removed in the future. For more help https://extensionworkshop.com/documentation/publish/self-distribution/
+
+# LOCALIZATION NOTE: Do not translate "HTMLOptionsCollection.length". %1$S is the invalid value, %2$S is the current limit.
+SelectOptionsLengthAssignmentWarning=Refused to expand <select> option list via assignment to HTMLOptionsCollection.length (value %1$S). The maximum supported size is %2$S.
+
+# LOCALIZATION NOTE: Do not translate "isExternalCTAP2SecurityKeySupported".
+IsExternalCTAP2SecurityKeySupportedWarning=isExternalCTAP2SecurityKeySupported() is deprecated.
+
+InvalidFormControlUnfocusable=An invalid form control is not focusable.
+# LOCALIZATION NOTE: Do not translate "name="
+InvalidNamedFormControlUnfocusable=The invalid form control with name=‘%S’ is not focusable.
diff --git a/l10n-en-GB/dom/chrome/global-strres.properties b/l10n-en-GB/dom/chrome/global-strres.properties
new file mode 100644
index 0000000000..b63767e222
--- /dev/null
+++ b/l10n-en-GB/dom/chrome/global-strres.properties
@@ -0,0 +1,5 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+16389=An unknown error has occurred (%1$S)
diff --git a/l10n-en-GB/dom/chrome/layout/HtmlForm.properties b/l10n-en-GB/dom/chrome/layout/HtmlForm.properties
new file mode 100644
index 0000000000..4bdbf69c0e
--- /dev/null
+++ b/l10n-en-GB/dom/chrome/layout/HtmlForm.properties
@@ -0,0 +1,35 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+Reset=Reset
+Submit=Submit Query
+Browse=Browse…
+FileUpload=File Upload
+DirectoryUpload=Select Folder to Upload
+DirectoryPickerOkButtonLabel=Upload
+ForgotPostWarning=Form contains enctype=%S, but does not contain method=post.  Submitting normally with method=GET and no enctype instead.
+ForgotFileEnctypeWarning=Form contains a file input, but is missing method=POST and enctype=multipart/form-data on the form.  The file will not be sent.
+# LOCALIZATION NOTE (DefaultFormSubject): %S will be replaced with brandShortName
+DefaultFormSubject=Form Post from %S
+CannotEncodeAllUnicode=A form was submitted in the %S encoding which cannot encode all Unicode characters, so user input may get corrupted. To avoid this problem, the page should be changed so that the form is submitted in the UTF-8 encoding either by changing the encoding of the page itself to UTF-8 or by specifying accept-charset=utf-8 on the form element.
+AllSupportedTypes=All Supported Types
+# LOCALIZATION NOTE (NoFileSelected): this string is shown on a
+# <input type='file'> when there is no file selected yet.
+NoFileSelected=No file selected.
+# LOCALIZATION NOTE (NoFilesSelected): this string is shown on a
+# <input type='file' multiple> when there is no file selected yet.
+NoFilesSelected=No files selected.
+# LOCALIZATION NOTE (NoDirSelected): this string is shown on a
+# <input type='file' directory/webkitdirectory> when there is no directory
+# selected yet.
+NoDirSelected=No directory selected.
+# LOCALIZATION NOTE (XFilesSelected): this string is shown on a
+# <input type='file' multiple> when there are more than one selected file.
+# %S will be a number greater or equal to 2.
+XFilesSelected=%S files selected.
+ColorPicker=Choose a colour
+# LOCALIZATION NOTE (DefaultSummary): this string is shown on a <details> when
+# it has no direct <summary> child. Google Chrome should already have this
+# string translated.
+DefaultSummary=Details
diff --git a/l10n-en-GB/dom/chrome/layout/MediaDocument.properties b/l10n-en-GB/dom/chrome/layout/MediaDocument.properties
new file mode 100644
index 0000000000..df3575fc68
--- /dev/null
+++ b/l10n-en-GB/dom/chrome/layout/MediaDocument.properties
@@ -0,0 +1,22 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#LOCALIZATION NOTE (ImageTitleWithDimensions2AndFile): first %S is filename, second %S is type, third %S is width and fourth %S is height
+#LOCALIZATION NOTE (ImageTitleWithoutDimensions): first %S is filename, second %S is type
+#LOCALIZATION NOTE (ImageTitleWithDimensions2): first %S is type, second %S is width and third %S is height
+#LOCALIZATION NOTE (ImageTitleWithNeitherDimensionsNorFile): first %S is type
+#LOCALIZATION NOTE (MediaTitleWithFile): first %S is filename, second %S is type
+#LOCALIZATION NOTE (MediaTitleWithNoInfo): first %S is type
+ImageTitleWithDimensions2AndFile=%S (%S Image, %S × %S pixels)
+ImageTitleWithoutDimensions=%S (%S Image)
+ImageTitleWithDimensions2=(%S Image, %S × %S pixels)
+ImageTitleWithNeitherDimensionsNorFile=(%S Image)
+MediaTitleWithFile=%S (%S Object)
+MediaTitleWithNoInfo=(%S Object)
+
+InvalidImage=The image “%S” cannot be displayed, because it contains errors.
+UnsupportedImage=The image “%S” cannot be displayed because it requires unsupported features.
+ScaledImage=Scaled (%S%%)
+
+TitleWithStatus=%S – %S
diff --git a/l10n-en-GB/dom/chrome/layout/css.properties b/l10n-en-GB/dom/chrome/layout/css.properties
new file mode 100644
index 0000000000..5424666641
--- /dev/null
+++ b/l10n-en-GB/dom/chrome/layout/css.properties
@@ -0,0 +1,52 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+MimeNotCss=The stylesheet %1$S was not loaded because its MIME type, "%2$S", is not "text/css".
+MimeNotCssWarn=The stylesheet %1$S was loaded as CSS even though its MIME type, "%2$S", is not "text/css".
+
+PEDeclDropped=Declaration dropped.
+PEDeclSkipped=Skipped to next declaration.
+PEUnknownProperty=Unknown property '%1$S'.
+PEPRSyntaxFieldEmptyInput=@property syntax descriptor is empty.
+PEPRSyntaxFieldExpectedPipe=@property syntax descriptor ‘%S’ contains components without a pipe between them.
+PEPRSyntaxFieldInvalidNameStart=@property syntax descriptor ‘%S’ contains a component name that starts with an invalid character.
+PEPRSyntaxFieldInvalidName=@property syntax descriptor ‘%S’ contains a component name with an invalid character.
+PEPRSyntaxFieldUnclosedDataTypeName=@property syntax descriptor ‘%S’ contains an unclosed data type name.
+PEPRSyntaxFieldUnexpectedEOF=@property syntax descriptor ‘%S’ is incomplete.
+PEPRSyntaxFieldUnknownDataTypeName=@property syntax descriptor ‘%S’ contains an unknown data type name.
+PEValueParsingError=Error in parsing value for '%1$S'.
+PEUnknownAtRule=Unrecognised at-rule or error parsing at-rule '%1$S'.
+PEMQUnexpectedOperator=Unexpected operator in media list.
+PEMQUnexpectedToken=Unexpected token ‘%1$S’ in media list.
+PEAtNSUnexpected=Unexpected token within @namespace: '%1$S'.
+PEKeyframeBadName=Expected identifier for name of @keyframes rule.
+PEBadSelectorRSIgnored=Ruleset ignored due to bad selector.
+PEBadSelectorKeyframeRuleIgnored=Keyframe rule ignored due to bad selector.
+PESelectorGroupNoSelector=Selector expected.
+PESelectorGroupExtraCombinator=Dangling combinator.
+PEClassSelNotIdent=Expected identifier for class selector but found '%1$S'.
+PETypeSelNotType=Expected element name or '*' but found '%1$S'.
+PEUnknownNamespacePrefix=Unknown namespace prefix '%1$S'.
+PEAttributeNameExpected=Expected identifier for attribute name but found '%1$S'.
+PEAttributeNameOrNamespaceExpected=Expected attribute name or namespace but found '%1$S'.
+PEAttSelNoBar=Expected '|' but found '%1$S'.
+PEAttSelUnexpected=Unexpected token in attribute selector: '%1$S'.
+PEAttSelBadValue=Expected identifier or string for value in attribute selector but found '%1$S'.
+PEPseudoSelBadName=Expected identifier for pseudo-class or pseudo-element but found '%1$S'.
+PEPseudoSelEndOrUserActionPC=Expected end of selector or a user action pseudo-class after pseudo-element but found '%1$S'.
+PEPseudoSelUnknown=Unknown pseudo-class or pseudo-element '%1$S'.
+PEPseudoClassArgNotIdent=Expected identifier for pseudo-class parameter but found '%1$S'.
+PEColorNotColor=Expected colour but found '%1$S'.
+PEParseDeclarationDeclExpected=Expected declaration but found '%1$S'.
+PEUnknownFontDesc=Unknown descriptor '%1$S' in @font-face rule.
+PEMQExpectedFeatureName=Expected media feature name but found '%1$S'.
+PEMQNoMinMaxWithoutValue=Media features with min- or max- must have a value.
+PEMQExpectedFeatureValue=Found invalid value for media feature.
+PEExpectedNoneOrURL=Expected 'none' or URL but found '%1$S'.
+PEExpectedNoneOrURLOrFilterFunction=Expected 'none', URL, or filter function but found '%1$S'.
+PEDisallowedImportRule=@import rules are not yet valid in constructed stylesheets.
+PENeverMatchingHostSelector=:host selector in ‘%S’ is not featureless and will never match. Maybe you intended to use :host()?
+
+TooLargeDashedRadius=Border radius is too large for ‘dashed’ style (the limit is 100000px). Rendering as solid.
+TooLargeDottedRadius=Border radius is too large for ‘dotted’ style (the limit is 100000px). Rendering as solid.
diff --git a/l10n-en-GB/dom/chrome/layout/htmlparser.properties b/l10n-en-GB/dom/chrome/layout/htmlparser.properties
new file mode 100644
index 0000000000..0f8915c5f4
--- /dev/null
+++ b/l10n-en-GB/dom/chrome/layout/htmlparser.properties
@@ -0,0 +1,145 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# Encoding warnings and errors
+EncNoDeclarationFrame=The character encoding of a framed document was not declared. The document may appear different if viewed without the document framing it.
+EncXmlDecl=The character encoding of an HTML document was declared using the XML declaration syntax. This is non-conforming, and declaring the encoding using a meta tag at the start of the head part is more efficient.
+EncMetaTooLate=A meta tag attempting to declare the character encoding declaration was found too late, and the encoding was guessed from content instead. The meta tag needs to be moved to the start of the head part of the document.
+EncMetaTooLateFrame=A meta tag attempting to declare the character encoding declaration was found too late, and the encoding of the parent document was used instead. The meta tag needs to be moved to the start of the head part of the document.
+EncMetaAfterHeadInKilobyte=The meta tag declaring the character encoding of the document should be moved to start of the head part of the document.
+EncNoDecl=The character encoding of the document was not declared, so the encoding was guessed from content. The character encoding needs to be declared in the Content-Type HTTP header, using a meta tag, or using a byte order mark.
+EncNoDeclPlain=The character encoding of the document was not declared, so the encoding was guessed from content. The character encoding needs to be declared in the Content-Type HTTP header or using a byte order mark.
+EncMetaUnsupported=An unsupported character encoding was declared for the HTML document using a meta tag. The declaration was ignored.
+EncProtocolUnsupported=An unsupported character encoding was declared on the transfer protocol level. The declaration was ignored.
+EncMetaUtf16=A meta tag was used to declare the character encoding as UTF-16. This was interpreted as an UTF-8 declaration instead.
+EncMetaUserDefined=A meta tag was used to declare the character encoding as x-user-defined. This was interpreted as a windows-1252 declaration instead for compatibility with intentionally mis-encoded legacy fonts. This site should migrate to Unicode.
+
+EncMetaReplacement=A meta tag was used to declare an encoding that is a cross-site scripting hazard. The replacement encoding was used instead.
+EncProtocolReplacement=An encoding that is a cross-site scripting hazard was declared on the transfer protocol level. The replacement encoding was used instead.
+EncDetectorReload=The character encoding of the document was not declared, and the encoding was guessable from content only late. This caused the document to be reloaded. The character encoding needs to be declared in the Content-Type HTTP header, using a meta tag, or using a byte order mark.
+EncDetectorReloadPlain=The character encoding of the document was not declared, and the encoding was guessable from content only late. This caused the document to be reloaded. The character encoding needs to be declared in the Content-Type HTTP header or using a byte order mark.
+EncError=The byte stream was erroneous according to the character encoding that was declared. The character encoding declaration may be incorrect.
+EncErrorFrame=The byte stream was erroneous according to the character encoding that was inherited from the parent document. The character encoding needs to be declared in the Content-Type HTTP header, using a meta tag, or using a byte order mark.
+EncErrorFramePlain=The byte stream was erroneous according to the character encoding that was inherited from the parent document. The character encoding needs to be declared in the Content-Type HTTP header or using a byte order mark.
+EncSpeculationFailMeta=The start of the document was reparsed, because there were non-ASCII characters before the meta tag that declared the encoding. The meta should be the first child of head without non-ASCII comments before.
+EncSpeculationFailXml=The start of the document was reparsed, because there were non-ASCII characters in the part of the document that was unsuccessfully searched for a meta tag before falling back to the XML declaration syntax. A meta tag at the start of the head part should be used instead of the XML declaration syntax.
+# The audience of the following message isn't the author of the document but other people debugging browser behavior.
+EncSpeculationFail2022=The start of the document was reparsed, because ISO-2022-JP is an ASCII-incompatible encoding.
+
+# The bulk of the messages below are derived from
+# https://hg.mozilla.org/projects/htmlparser/file/1f633cef7de7/src/nu/validator/htmlparser/impl/ErrorReportingTokenizer.java
+# which is available under the MIT license.
+
+# Tokenizer errors
+errGarbageAfterLtSlash=Garbage after “</”.
+errLtSlashGt=Saw “</>”. Probable causes: Unescaped “<” (escape as “&lt;”) or mistyped end tag.
+errCharRefLacksSemicolon=Character reference was not terminated by a semicolon.
+errNoDigitsInNCR=No digits in numeric character reference.
+errGtInSystemId=“>” in system identifier.
+errGtInPublicId=“>” in public identifier.
+errNamelessDoctype=Nameless doctype.
+errConsecutiveHyphens=Consecutive hyphens did not terminate a comment. “--” is not permitted inside a comment, but e.g. “- -” is.
+errPrematureEndOfComment=Premature end of comment. Use “-->” to end a comment properly.
+errBogusComment=Bogus comment.
+errUnquotedAttributeLt=“<” in an unquoted attribute value. Probable cause: Missing “>” immediately before.
+errUnquotedAttributeGrave=“`” in an unquoted attribute value. Probable cause: Using the wrong character as a quote.
+errUnquotedAttributeQuote=Quote in an unquoted attribute value. Probable causes: Attributes running together or a URL query string in an unquoted attribute value.
+errUnquotedAttributeEquals=“=” in an unquoted attribute value. Probable causes: Attributes running together or a URL query string in an unquoted attribute value.
+errSlashNotFollowedByGt=A slash was not immediately followed by “>”.
+errNoSpaceBetweenAttributes=No space between attributes.
+errUnquotedAttributeStartLt=“<” at the start of an unquoted attribute value. Probable cause: Missing “>” immediately before.
+errUnquotedAttributeStartGrave=“`” at the start of an unquoted attribute value. Probable cause: Using the wrong character as a quote.
+errUnquotedAttributeStartEquals=“=” at the start of an unquoted attribute value. Probable cause: Stray duplicate equals sign.
+errAttributeValueMissing=Attribute value missing.
+errBadCharBeforeAttributeNameLt=Saw “<” when expecting an attribute name. Probable cause: Missing “>” immediately before.
+errEqualsSignBeforeAttributeName=Saw “=” when expecting an attribute name. Probable cause: Attribute name missing.
+errBadCharAfterLt=Bad character after “<”. Probable cause: Unescaped “<”. Try escaping it as “&lt;”.
+errLtGt=Saw “<>”. Probable causes: Unescaped “<” (escape as “&lt;”) or mistyped start tag.
+errProcessingInstruction=Saw “<?”. Probable cause: Attempt to use an XML processing instruction in HTML. (XML processing instructions are not supported in HTML.)
+errUnescapedAmpersandInterpretedAsCharacterReference=The string following “&” was interpreted as a character reference. (“&” probably should have been escaped as “&amp;”.)
+errNotSemicolonTerminated=Named character reference was not terminated by a semicolon. (Or “&” should have been escaped as “&amp;”.)
+errNoNamedCharacterMatch=“&” did not start a character reference. (“&” probably should have been escaped as “&amp;”.)
+errQuoteBeforeAttributeName=Saw a quote when expecting an attribute name. Probable cause: “=” missing immediately before.
+errLtInAttributeName=“<” in attribute name. Probable cause: “>” missing immediately before.
+errQuoteInAttributeName=Quote in attribute name. Probable cause: Matching quote missing somewhere earlier.
+errExpectedPublicId=Expected a public identifier but the doctype ended.
+errBogusDoctype=Bogus doctype.
+maybeErrAttributesOnEndTag=End tag had attributes.
+maybeErrSlashInEndTag=Stray “/” at the end of an end tag.
+errNcrNonCharacter=Character reference expands to a non-character.
+errNcrSurrogate=Character reference expands to a surrogate.
+errNcrControlChar=Character reference expands to a control character.
+errNcrCr=A numeric character reference expanded to carriage return.
+errNcrInC1Range=A numeric character reference expanded to the C1 controls range.
+errEofInPublicId=End of file inside public identifier.
+errEofInComment=End of file inside comment.
+errEofInDoctype=End of file inside doctype.
+errEofInAttributeValue=End of file reached when inside an attribute value. Ignoring tag.
+errEofInAttributeName=End of file occurred in an attribute name. Ignoring tag.
+errEofWithoutGt=Saw end of file without the previous tag ending with “>”. Ignoring tag.
+errEofInTagName=End of file seen when looking for tag name. Ignoring tag.
+errEofInEndTag=End of file inside end tag. Ignoring tag.
+errEofAfterLt=End of file after “<”.
+errNcrOutOfRange=Character reference outside the permissible Unicode range.
+errNcrUnassigned=Character reference expands to a permanently unassigned code point.
+errDuplicateAttribute=Duplicate attribute.
+errEofInSystemId=End of file inside system identifier.
+errExpectedSystemId=Expected a system identifier but the doctype ended.
+errMissingSpaceBeforeDoctypeName=Missing space before doctype name.
+errNestedComment=Saw “<!--” within a comment. Probable cause: Nested comment (not allowed).
+errNcrZero=Character reference expands to zero.
+errNoSpaceBetweenDoctypeSystemKeywordAndQuote=No space between the doctype “SYSTEM” keyword and the quote.
+errNoSpaceBetweenPublicAndSystemIds=No space between the doctype public and system identifiers.
+errNoSpaceBetweenDoctypePublicKeywordAndQuote=No space between the doctype “PUBLIC” keyword and the quote.
+
+# Tree builder errors
+errDeepTree=The document tree is too deep. The tree will be flattened to be 513 elements deep.
+errStrayStartTag2=Stray start tag “%1$S”.
+errStrayEndTag=Stray end tag “%1$S”.
+errUnclosedElements=End tag “%1$S” seen, but there were open elements.
+errUnclosedElementsImplied=End tag “%1$S” implied, but there were open elements.
+errUnclosedElementsCell=A table cell was implicitly closed, but there were open elements.
+errStrayDoctype=Stray doctype.
+errAlmostStandardsDoctype=Almost standards mode doctype. Expected “<!DOCTYPE html>”.
+errQuirkyDoctype=Quirky doctype. Expected “<!DOCTYPE html>”.
+errAlmostStandardsDoctypeVerbose=This page is in Almost Standards Mode. Page layout may be impacted. For Standards Mode use “<!DOCTYPE html>”.
+errQuirkyDoctypeVerbose=This page is in Quirks Mode. Page layout may be impacted. For Standards Mode use “<!DOCTYPE html>”.
+errNonSpaceInTrailer=Non-space character in page trailer.
+errNonSpaceAfterFrameset=Non-space after “frameset”.
+errNonSpaceInFrameset=Non-space in “frameset”.
+errNonSpaceAfterBody=Non-space character after body.
+errNonSpaceInColgroupInFragment=Non-space in “colgroup” when parsing fragment.
+errNonSpaceInNoscriptInHead=Non-space character inside “noscript” inside “head”.
+errFooBetweenHeadAndBody=“%1$S” element between “head” and “body”.
+errStartTagWithoutDoctype=Start tag seen without seeing a doctype first. Expected “<!DOCTYPE html>”.
+errNoSelectInTableScope=No “select” in table scope.
+errStartSelectWhereEndSelectExpected=“select” start tag where end tag expected.
+errStartTagWithSelectOpen=“%1$S” start tag with “select” open.
+errBadStartTagInNoscriptInHead=Bad start tag “%1$S” in “noscript” in “head”.
+errImage=Saw a start tag “image”.
+errFooSeenWhenFooOpen2=Start tag “%1$S” seen but an element of the same type was already open.
+errHeadingWhenHeadingOpen=Heading cannot be a child of another heading.
+errFramesetStart=“frameset” start tag seen.
+errNoCellToClose=No cell to close.
+errStartTagInTable=Start tag “%1$S” seen in “table”.
+errFormWhenFormOpen=Saw a “form” start tag, but there was already an active “form” element. Nested forms are not allowed. Ignoring the tag.
+errTableSeenWhileTableOpen=Start tag for “table” seen but the previous “table” is still open.
+errStartTagInTableBody=“%1$S” start tag in table body.
+errEndTagSeenWithoutDoctype=End tag seen without seeing a doctype first. Expected “<!DOCTYPE html>”.
+errEndTagAfterBody=Saw an end tag after “body” had been closed.
+errEndTagSeenWithSelectOpen=“%1$S” end tag with “select” open.
+errGarbageInColgroup=Garbage in “colgroup” fragment.
+errEndTagBr=End tag “br”.
+errNoElementToCloseButEndTagSeen=No “%1$S” element in scope but a “%1$S” end tag seen.
+errHtmlStartTagInForeignContext=HTML start tag “%1$S” in a foreign namespace context.
+errNoTableRowToClose=No table row to close.
+errNonSpaceInTable=Misplaced non-space characters inside a table.
+errUnclosedChildrenInRuby=Unclosed children in “ruby”.
+errStartTagSeenWithoutRuby=Start tag “%1$S” seen without a “ruby” element being open.
+errSelfClosing=Self-closing syntax (“/>”) used on a non-void HTML element. Ignoring the slash and treating as a start tag.
+errNoCheckUnclosedElementsOnStack=Unclosed elements on stack.
+errEndTagDidNotMatchCurrentOpenElement=End tag “%1$S” did not match the name of the current open element (“%2$S”).
+errEndTagViolatesNestingRules=End tag “%1$S” violates nesting rules.
+errEndWithUnclosedElements=End tag for “%1$S” seen, but there were unclosed elements.
+errListUnclosedStartTags=Unclosed element or elements.
diff --git a/l10n-en-GB/dom/chrome/layout/layout_errors.properties b/l10n-en-GB/dom/chrome/layout/layout_errors.properties
new file mode 100644
index 0000000000..8ea3651cf8
--- /dev/null
+++ b/l10n-en-GB/dom/chrome/layout/layout_errors.properties
@@ -0,0 +1,53 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+ImageMapRectBoundsError=The "coords" attribute of the <area shape="rect"> tag is not in the "left,top,right,bottom" format.
+ImageMapCircleWrongNumberOfCoords=The "coords" attribute of the <area shape="circle"> tag is not in the "center-x,center-y,radius" format.
+ImageMapCircleNegativeRadius=The "coords" attribute of the <area shape="circle"> tag has a negative radius.
+ImageMapPolyWrongNumberOfCoords=The "coords" attribute of the <area shape="poly"> tag is not in the "x1,y1,x2,y2 …" format.
+ImageMapPolyOddNumberOfCoords=The "coords" attribute of the <area shape="poly"> tag is missing the last "y" coordinate (the correct format is "x1,y1,x2,y2 …").
+
+ScrollLinkedEffectFound3=This site appears to use a scroll-linked positioning effect. This may not work well with asynchronous panning; see https://firefox-source-docs.mozilla.org/performance/scroll-linked_effects.html for further details and to join the discussion on related tools and features!
+
+## LOCALIZATION NOTE(CompositorAnimationWarningContentTooLargeArea):
+## %1$S is an integer value of the area of the frame
+## %2$S is an integer value of the area of a limit based on the viewport size
+CompositorAnimationWarningContentTooLargeArea=Animation cannot be run on the compositor because the area of the frame (%1$S) is too large relative to the viewport (larger than %2$S)
+## LOCALIZATION NOTE(CompositorAnimationWarningContentTooLarge2):
+## (%1$S, %2$S) is a pair of integer values of the frame size
+## (%3$S, %4$S) is a pair of integer values of a limit based on the viewport size
+## (%5$S, %6$S) is a pair of integer values of an absolute limit
+CompositorAnimationWarningContentTooLarge2=Animation cannot be run on the compositor because the frame size (%1$S, %2$S) is too large relative to the viewport (larger than (%3$S, %4$S)) or larger than the maximum allowed value (%5$S, %6$S)
+## LOCALIZATION NOTE(CompositorAnimationWarningTransformBackfaceVisibilityHidden):
+## 'backface-visibility: hidden' is a CSS property, don't translate it.
+CompositorAnimationWarningTransformBackfaceVisibilityHidden=Animations of ‘backface-visibility: hidden’ transforms cannot be run on the compositor
+## LOCALIZATION NOTE(CompositorAnimationWarningTransformSVG,
+##                   CompositorAnimationWarningTransformWithGeometricProperties,
+##                   CompositorAnimationWarningTransformWithSyncGeometricAnimations,
+##                   CompositorAnimationWarningTransformFrameInactive,
+##                   CompositorAnimationWarningOpacityFrameInactive):
+## 'transform' and 'opacity' mean CSS property names, don't translate it.
+CompositorAnimationWarningTransformSVG=Animations of ‘transform’ on elements with SVG transforms cannot be run on the compositor
+CompositorAnimationWarningTransformWithGeometricProperties=Animations of ‘transform’ cannot be run on the compositor when geometric properties are animated on the same element at the same time
+CompositorAnimationWarningTransformWithSyncGeometricAnimations=Animation of ‘transform’ cannot be run on the compositor because it should be synchronised with animations of geometric properties that started at the same time
+CompositorAnimationWarningTransformFrameInactive=Animation cannot be run on the compositor because the frame was not marked active for ‘transform’ animation
+CompositorAnimationWarningTransformIsBlockedByImportantRules=Transform animation cannot be run on the compositor because transform-related properties are overridden by !important rules
+CompositorAnimationWarningOpacityFrameInactive=Animation cannot be run on the compositor because the frame was not marked active for ‘opacity’ animation
+CompositorAnimationWarningHasRenderingObserver=Animation cannot be run on the compositor because the element has rendering observers (-moz-element or SVG clipping/masking)
+CompositorAnimationWarningHasCurrentColor=Animations of ‘background-color’ cannot be run on the compositor with ‘current-color’ keyframe.
+
+## LOCALIZATION NOTE: Do not translate zoom, calc(), "transform", "transform-origin: 0 0"
+ZoomPropertyWarning=This page uses the non standard property “zoom”. Consider using calc() in the relevant property values, or using “transform” along with “transform-origin: 0 0”.
+
+## LOCALIZATION NOTE(PrincipalWritingModePropagationWarning):
+## Do not translate <html>, <body>, CSS, "writing-mode", "direction", "text-orientation", :root, and "The Principal Writing Mode" because they are technical terms.
+PrincipalWritingModePropagationWarning=When rendering the <html> element, the used values of CSS properties “writing-mode”, “direction”, and “text-orientation” on the <html> element are taken from the computed values of the <body> element, not from the <html> element’s own values. Consider setting these properties on the :root CSS pseudo-class. For more information see “The Principal Writing Mode” in https://www.w3.org/TR/css-writing-modes-3/#principal-flow
+
+## LOCALIZATION NOTE(ScrollAnchoringDisabledInContainer):
+## %1$S is an integer value with the total number of adjustments
+## %2$S is a floating point value with the average distance adjusted
+## %3$S is a floating point value with the total adjusted distance
+ScrollAnchoringDisabledInContainer=Scroll anchoring was disabled in a scroll container because of too many consecutive adjustments (%1$S) with too little total distance (%2$S px average, %3$S px total).
+
+ForcedLayoutStart=Layout was forced before the page was fully loaded. If stylesheets are not yet loaded this may cause a flash of unstyled content.
diff --git a/l10n-en-GB/dom/chrome/layout/printing.properties b/l10n-en-GB/dom/chrome/layout/printing.properties
new file mode 100644
index 0000000000..b13066e6ca
--- /dev/null
+++ b/l10n-en-GB/dom/chrome/layout/printing.properties
@@ -0,0 +1,56 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# Page number formatting
+## @page_number The current page number
+#LOCALIZATION NOTE (pageofpages): Do not translate %ld in the following line.
+# Place the word %ld where the page number and number of pages should be
+# The first %ld will receive the the page number
+pagenumber=%1$d
+
+# Page number formatting
+## @page_number The current page number
+## @page_total The total number of pages
+#LOCALIZATION NOTE (pageofpages): Do not translate %ld in the following line.
+# Place the word %ld where the page number and number of pages should be
+# The first %ld will receive the the page number
+# the second %ld will receive the total number of pages
+pageofpages=%1$d of %2$d
+
+PrintToFile=Print To File
+print_error_dialog_title=Printer Error
+printpreview_error_dialog_title=Print Preview Error
+
+# Printing error messages.
+#LOCALIZATION NOTE: Some of these messages come in pairs, one
+# for printing and one for print previewing.  You can remove that
+# distinction in your language by removing the entity with the _PP
+# suffix; then the entity without a suffix will be used for both.
+# You can also add that distinction to any of the messages that don't
+# already have it by adding a new entity with a _PP suffix.
+#
+# For instance, if you delete PERR_GFX_PRINTER_DOC_IS_BUSY_PP, then
+# the PERR_GFX_PRINTER_DOC_IS_BUSY message will be used for that error
+# condition when print previewing as well as when printing.  If you
+# add PERR_FAILURE_PP, then PERR_FAILURE will only be used when
+# printing, and PERR_FAILURE_PP will be used under the same conditions
+# when print previewing.
+#
+PERR_FAILURE=An error occurred while printing.
+
+PERR_ABORT=The print job was aborted, or cancelled.
+PERR_NOT_AVAILABLE=Some printing functionality is not currently available.
+PERR_NOT_IMPLEMENTED=Some printing functionality is not implemented yet.
+PERR_OUT_OF_MEMORY=There is not enough free memory to print.
+PERR_UNEXPECTED=There was an unexpected problem while printing.
+
+PERR_GFX_PRINTER_NO_PRINTER_AVAILABLE=No printers available.
+PERR_GFX_PRINTER_NO_PRINTER_AVAILABLE_PP=No printers available, cannot show print preview.
+PERR_GFX_PRINTER_NAME_NOT_FOUND=The selected printer could not be found.
+PERR_GFX_PRINTER_COULD_NOT_OPEN_FILE=Failed to open output file for print to file.
+PERR_GFX_PRINTER_STARTDOC=Printing failed while starting the print job.
+PERR_GFX_PRINTER_ENDDOC=Printing failed while completing the print job.
+PERR_GFX_PRINTER_STARTPAGE=Printing failed while starting a new page.
+PERR_GFX_PRINTER_DOC_IS_BUSY=Cannot print this document yet, it is still being loaded.
+PERR_GFX_PRINTER_DOC_IS_BUSY_PP=Cannot print-preview this document yet, it is still being loaded.
diff --git a/l10n-en-GB/dom/chrome/layout/xmlparser.properties b/l10n-en-GB/dom/chrome/layout/xmlparser.properties
new file mode 100644
index 0000000000..e0206f0370
--- /dev/null
+++ b/l10n-en-GB/dom/chrome/layout/xmlparser.properties
@@ -0,0 +1,48 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# Map Expat error codes to error strings
+1 = out of memory
+2 = syntax error
+3 = no element found
+4 = not well-formed
+5 = unclosed token
+6 = partial character
+7 = mismatched tag
+8 = duplicate attribute
+9 = junk after document element
+10 = illegal parameter entity reference
+11 = undefined entity
+12 = recursive entity reference
+13 = asynchronous entity
+14 = reference to invalid character number
+15 = reference to binary entity
+16 = reference to external entity in attribute
+17 = XML or text declaration not at start of entity
+18 = unknown encoding
+19 = encoding specified in XML declaration is incorrect
+20 = unclosed CDATA section
+21 = error in processing external entity reference
+22 = document is not standalone
+23 = unexpected parser state
+24 = entity declared in parameter entity
+27 = prefix not bound to a namespace
+28 = must not undeclare prefix
+29 = incomplete markup in parameter entity
+30 = XML declaration not well-formed
+31 = text declaration not well-formed
+32 = illegal character(s) in public id
+38 = reserved prefix (xml) must not be undeclared or bound to another namespace name
+39 = reserved prefix (xmlns) must not be declared or undeclared
+40 = prefix must not be bound to one of the reserved namespace names
+
+# %1$S is replaced by the Expat error string, may be followed by Expected (see below)
+# %2$S is replaced by URL
+# %3$u is replaced by line number
+# %4$u is replaced by column number
+XMLParsingError = XML Parsing Error: %1$S\nLocation: %2$S\nLine Number %3$u, Column %4$u:
+
+# %S is replaced by a tag name.
+# This gets appended to the error string if the error is mismatched tag.
+Expected = . Expected: </%S>.
diff --git a/l10n-en-GB/dom/chrome/layout/xul.properties b/l10n-en-GB/dom/chrome/layout/xul.properties
new file mode 100644
index 0000000000..5637658237
--- /dev/null
+++ b/l10n-en-GB/dom/chrome/layout/xul.properties
@@ -0,0 +1,5 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+PINotInProlog=<?%1$S?> processing instruction does not have any effect outside the prologue any longer (see bug 360119).
diff --git a/l10n-en-GB/dom/chrome/mathml/mathml.properties b/l10n-en-GB/dom/chrome/mathml/mathml.properties
new file mode 100644
index 0000000000..28793b66d0
--- /dev/null
+++ b/l10n-en-GB/dom/chrome/mathml/mathml.properties
@@ -0,0 +1,15 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+InvalidChild=Invalid markup: <%1$S> is not allowed as a child of <%2$S>.
+ChildCountIncorrect=Invalid markup: Incorrect number of children for <%1$S/> tag.
+DuplicateMprescripts=Invalid markup: More than one <mprescripts/> in <mmultiscripts/>.
+# LOCALIZATION NOTE:  The first child of <mmultiscript/> is the base, that is the element to which scripts are attached.
+NoBase=Invalid markup: Expected exactly one Base element in <mmultiscripts/>.  Found none.
+SubSupMismatch=Invalid markup: Incomplete subscript/superscript pair in <mmultiscripts/>.
+
+# LOCALIZATION NOTE:  When localizing the single quotes ('), follow the conventions in css.properties for your target locale.
+AttributeParsingError=Error in parsing the value '%1$S' for '%2$S' attribute of <%3$S/>.  Attribute ignored.
+AttributeParsingErrorNoTag=Error in parsing the value '%1$S' for '%2$S' attribute.  Attribute ignored.
+LengthParsingError=Error in parsing MathML attribute value '%1$S' as length.  Attribute ignored.
diff --git a/l10n-en-GB/dom/chrome/nsWebBrowserPersist.properties b/l10n-en-GB/dom/chrome/nsWebBrowserPersist.properties
new file mode 100644
index 0000000000..752a6946c6
--- /dev/null
+++ b/l10n-en-GB/dom/chrome/nsWebBrowserPersist.properties
@@ -0,0 +1,17 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+readError=%S could not be saved, because the source file could not be read.\n\nTry again later, or contact the server administrator.
+writeError=%S could not be saved, because an unknown error occurred.\n\nTry saving to a different location.
+launchError=%S could not be opened, because an unknown error occurred.\n\nTry saving to disk first and then opening the file.
+diskFull=There is not enough room on the disk to save %S.\n\nRemove unnecessary files from the disk and try again, or try saving in a different location.
+readOnly=%S could not be saved, because the disk, folder, or file is write-protected.\n\nWrite-enable the disk and try again, or try saving in a different location.
+accessError=%S could not be saved, because you cannot change the contents of that folder.\n\nChange the folder properties and try again, or try saving in a different location.
+SDAccessErrorCardReadOnly=Cannot download file because the SD card is in use.
+SDAccessErrorCardMissing=Cannot download file because the SD card is missing.
+helperAppNotFound=%S could not be opened, because the associated helper application does not exist. Change the association in your preferences.
+noMemory=There is not sufficient memory to complete the action you requested.\n\nQuit some applications and try again.
+title=Downloading %S
+fileAlreadyExistsError=%S could not be saved, because a file already exists with the same name as the '_files' directory.\n\nTry saving to a different location.
+fileNameTooLongError=%S could not be saved, because the file name was too long.\n\nTry saving with a shorter file name.
diff --git a/l10n-en-GB/dom/chrome/security/caps.properties b/l10n-en-GB/dom/chrome/security/caps.properties
new file mode 100644
index 0000000000..6d30d79b82
--- /dev/null
+++ b/l10n-en-GB/dom/chrome/security/caps.properties
@@ -0,0 +1,9 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+CheckLoadURIError = Security Error: Content at %S may not load or link to %S.
+CheckSameOriginError = Security Error: Content at %S may not load data from %S.
+ExternalDataError = Security Error: Content at %S attempted to load %S, but may not load external data when being used as an image. 
+
+CreateWrapperDenied = Permission denied to create wrapper for object of class %S
+CreateWrapperDeniedForOrigin = Permission denied for <%2$S> to create wrapper for object of class %1$S
diff --git a/l10n-en-GB/dom/chrome/security/csp.properties b/l10n-en-GB/dom/chrome/security/csp.properties
new file mode 100644
index 0000000000..c75d8a132b
--- /dev/null
+++ b/l10n-en-GB/dom/chrome/security/csp.properties
@@ -0,0 +1,125 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# CSP Warnings:
+# LOCALIZATION NOTE (CSPViolation):
+# %1$S is the reason why the resource has not been loaded.
+CSPViolation = The page's settings blocked the loading of a resource: %1$S
+# LOCALIZATION NOTE (CSPViolationWithURI):
+# %1$S is the directive that has been violated.
+# %2$S is the URI of the resource which violated the directive.
+CSPViolationWithURI = The page's settings blocked the loading of a resource at %2$S ("%1$S").
+# LOCALIZATION NOTE (CSPROViolation):
+# %1$S is the reason why the resource has not been loaded.
+CSPROViolation = A violation occurred for a report-only CSP policy ("%1$S"). The behaviour was allowed, and a CSP report was sent.
+# LOCALIZATION NOTE (CSPROViolationWithURI):
+# %1$S is the directive that has been violated.
+# %2$S is the URI of the resource which violated the directive.
+CSPROViolationWithURI = The page's settings observed the loading of a resource at %2$S ("%1$S"). A CSP report is being sent.
+# LOCALIZATION NOTE (triedToSendReport):
+# %1$S is the URI we attempted to send a report to.
+triedToSendReport = Tried to send report to invalid URI: "%1$S"
+tooManyReports = Prevented too many CSP reports from being sent within a short period of time.
+# LOCALIZATION NOTE (couldNotParseReportURI):
+# %1$S is the report URI that could not be parsed
+couldNotParseReportURI = couldn't parse report URI: %1$S
+# LOCALIZATION NOTE (couldNotProcessUnknownDirective):
+# %1$S is the unknown directive
+couldNotProcessUnknownDirective = Couldn't process unknown directive '%1$S'
+# LOCALIZATION NOTE (ignoringUnknownOption):
+# %1$S is the option that could not be understood
+ignoringUnknownOption = Ignoring unknown option %1$S
+# LOCALIZATION NOTE (ignoringDuplicateSrc):
+# %1$S defines the duplicate src
+ignoringDuplicateSrc = Ignoring duplicate source %1$S
+# LOCALIZATION NOTE (ignoringNonAsciiToken):
+# %1$S defines the name of the directive
+# %2$S is the token string containing non-ASCII characters.
+ignoringNonAsciiToken = Ignoring directive ‘%1$S’ with the non-ASCII token ‘%2$S’
+# LOCALIZATION NOTE (ignoringSrcFromMetaCSP):
+# %1$S defines the ignored src
+ignoringSrcFromMetaCSP = Ignoring source '%1$S' (Not supported when delivered via meta element).
+# LOCALIZATION NOTE (ignoringSrcWithinNonceOrHashDirective):
+# %1$S is the ignored src (e.g. "unsafe-inline")
+# %2$S is the directive (e.g. "script-src-elem")
+ignoringSrcWithinNonceOrHashDirective = Ignoring “%1$S” within %2$S: nonce-source or hash-source specified
+# LOCALIZATION NOTE (ignoringScriptSrcForStrictDynamic):
+# %1$S is the ignored src
+# %1$S is the directive src (e.g. "script-src-elem")
+# 'strict-dynamic' should not be localized
+ignoringScriptSrcForStrictDynamic = Ignoring “%1$S” within %2$S: ‘strict-dynamic’ specified
+# LOCALIZATION NOTE (ignoringStrictDynamic):
+# %1$S is the ignored src
+ignoringStrictDynamic = Ignoring source “%1$S” (Only supported within script-src). 
+# LOCALIZATION NOTE (ignoringUnsafeEval):
+# %1$S is the csp directive (e.g. script-src-elem)
+# 'unsafe-eval' and 'wasm-unsafe-eval' should not be localized
+ignoringUnsafeEval = Ignoring ‘unsafe-eval’ or ‘wasm-unsafe-eval’ inside “%1$S”.
+# LOCALIZATION NOTE (strictDynamicButNoHashOrNonce):
+# %1$S is the csp directive that contains 'strict-dynamic'
+# 'strict-dynamic' should not be localized
+strictDynamicButNoHashOrNonce = Keyword ‘strict-dynamic’ within “%1$S” with no valid nonce or hash might block all scripts from loading
+# LOCALIZATION NOTE (reportURInotHttpsOrHttp2):
+# %1$S is the ETLD of the report URI that is not HTTP or HTTPS
+reportURInotHttpsOrHttp2 = The report URI (%1$S) should be an HTTP or HTTPS URI.
+# LOCALIZATION NOTE (reportURInotInReportOnlyHeader):
+# %1$S is the ETLD of the page with the policy
+reportURInotInReportOnlyHeader = This site (%1$S) has a Report-Only policy without a report URI. CSP will not block and cannot report violations of this policy.
+# LOCALIZATION NOTE (failedToParseUnrecognizedSource):
+# %1$S is the CSP Source that could not be parsed
+failedToParseUnrecognizedSource = Failed to parse unrecognised source %1$S
+# LOCALIZATION NOTE (upgradeInsecureRequest):
+# %1$S is the URL of the upgraded request; %2$S is the upgraded scheme.
+upgradeInsecureRequest = Upgrading insecure request '%1$S' to use '%2$S'
+# LOCALIZATION NOTE (ignoreSrcForDirective):
+ignoreSrcForDirective = Ignoring srcs for directive '%1$S'
+# LOCALIZATION NOTE (hostNameMightBeKeyword):
+# %1$S is the hostname in question and %2$S is the keyword
+hostNameMightBeKeyword = Interpreting %1$S as a hostname, not a keyword. If you intended this to be a keyword, use '%2$S' (wrapped in single quotes).
+# LOCALIZATION NOTE (notSupportingDirective):
+# directive is not supported (e.g. 'reflected-xss')
+notSupportingDirective = Not supporting directive '%1$S'. Directive and values will be ignored.
+# LOCALIZATION NOTE (blockAllMixedContent):
+# %1$S is the URL of the blocked resource load.
+blockAllMixedContent = Blocking insecure request '%1$S'.
+# LOCALIZATION NOTE (ignoringDirectiveWithNoValues):
+# %1$S is the name of a CSP directive that requires additional values
+ignoringDirectiveWithNoValues = Ignoring ‘%1$S‘ since it does not contain any parameters.
+# LOCALIZATION NOTE (ignoringReportOnlyDirective):
+# %1$S is the directive that is ignored in report-only mode.
+ignoringReportOnlyDirective = Ignoring sandbox directive when delivered in a report-only policy ‘%1$S’
+# LOCALIZATION NOTE (IgnoringSrcBecauseOfDirective):
+# %1$S is the name of the src that is ignored.
+# %2$S is the name of the directive that causes the src to be ignored.
+IgnoringSrcBecauseOfDirective=Ignoring ‘%1$S’ because of ‘%2$S’ directive.
+# LOCALIZATION NOTE (IgnoringSourceWithinDirective):
+# %1$S is the ignored src
+# %2$S is the directive  which supports src
+IgnoringSourceWithinDirective = Ignoring source “%1$S” (Not supported within ‘%2$S’).
+# LOCALIZATION NOTE (IgnoringSourceWithinDirective):
+# %1$S is the ignored src
+obsoleteBlockAllMixedContent = Ignoring ‘%1$S’ because mixed content display upgrading makes block-all-mixed-content obsolete.
+
+
+# CSP Errors:
+# LOCALIZATION NOTE (couldntParseInvalidSource):
+# %1$S is the source that could not be parsed
+couldntParseInvalidSource = Couldn't parse invalid source %1$S
+# LOCALIZATION NOTE (couldntParseInvalidHost):
+# %1$S is the host that's invalid
+couldntParseInvalidHost = Couldn't parse invalid host %1$S
+# LOCALIZATION NOTE (couldntParsePort):
+# %1$S is the string source
+couldntParsePort = Couldn't parse port in %1$S
+# LOCALIZATION NOTE (duplicateDirective):
+# %1$S is the name of the duplicate directive
+duplicateDirective = Duplicate %1$S directives detected.  All but the first instance will be ignored.
+# LOCALIZATION NOTE (couldntParseInvalidSandboxFlag):
+# %1$S is the option that could not be understood
+couldntParseInvalidSandboxFlag = Couldn’t parse invalid sandbox flag ‘%1$S’
+
+# LOCALIZATION NOTE (CSPMessagePrefix):
+# Do not translate "Content-Security-Policy", only handle spacing for the colon.
+# %S is a console message that is being prefixed here.
+CSPMessagePrefix = Content-Security-Policy: %S
diff --git a/l10n-en-GB/dom/chrome/security/security.properties b/l10n-en-GB/dom/chrome/security/security.properties
new file mode 100644
index 0000000000..0798ec2828
--- /dev/null
+++ b/l10n-en-GB/dom/chrome/security/security.properties
@@ -0,0 +1,167 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# Mixed Content Blocker
+# LOCALIZATION NOTE: "%1$S" is the URI of the blocked mixed content resource
+BlockMixedDisplayContent = Blocked loading mixed display content "%1$S"
+BlockMixedActiveContent = Blocked loading mixed active content "%1$S"
+
+# CORS
+# LOCALIZATION NOTE: Do not translate "Access-Control-Allow-Origin", Access-Control-Allow-Credentials, Access-Control-Allow-Methods, Access-Control-Allow-Headers
+CORSDisabled=Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at %1$S. (Reason: CORS disabled).
+CORSDidNotSucceed2=Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at %1$S. (Reason: CORS request did not succeed). Status code: %2$S.
+CORSOriginHeaderNotAdded=Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at %1$S. (Reason: CORS header ‘Origin’ cannot be added).
+CORSExternalRedirectNotAllowed=Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at %1$S. (Reason: CORS request external redirect not allowed).
+CORSRequestNotHttp=Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at %1$S. (Reason: CORS request not http).
+CORSMissingAllowOrigin2=Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at %1$S. (Reason: CORS header ‘Access-Control-Allow-Origin’ missing). Status code: %2$S.
+CORSMultipleAllowOriginNotAllowed=Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at %1$S. (Reason: Multiple CORS header ‘Access-Control-Allow-Origin’ not allowed).
+CORSAllowOriginNotMatchingOrigin=Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at %1$S. (Reason: CORS header 'Access-Control-Allow-Origin' does not match '%2$S').
+CORSNotSupportingCredentials=Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at ‘%1$S’. (Reason: Credential is not supported if the CORS header ‘Access-Control-Allow-Origin’ is ‘*’).
+CORSMethodNotFound=Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at %1$S. (Reason: Did not find method in CORS header 'Access-Control-Allow-Methods').
+CORSMissingAllowCredentials=Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at %1$S. (Reason: expected 'true' in CORS header 'Access-Control-Allow-Credentials').
+CORSPreflightDidNotSucceed3=Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at %1$S. (Reason: CORS preflight response did not succeed). Status code: %2$S.
+CORSInvalidAllowMethod=Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at %1$S. (Reason: invalid token '%2$S' in CORS header 'Access-Control-Allow-Methods').
+CORSInvalidAllowHeader=Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at %1$S. (Reason: invalid token '%2$S' in CORS header 'Access-Control-Allow-Headers').
+CORSMissingAllowHeaderFromPreflight2=Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at %1$S. (Reason: header ‘%2$S’ is not allowed according to header ‘Access-Control-Allow-Headers’ from CORS preflight response).
+CORSAllowHeaderFromPreflightDeprecation=Cross-Origin Request Warning: The Same Origin Policy will disallow reading the remote resource at %1$S soon. (Reason: When the `Access-Control-Allow-Headers` is `*`, the `Authorization` header is not covered. To include the `Authorization` header, it must be explicitly listed in CORS header `Access-Control-Allow-Headers`).
+
+# LOCALIZATION NOTE: Do not translate "Strict-Transport-Security", "HSTS", "max-age" or "includeSubDomains"
+STSUnknownError=Strict-Transport-Security: An unknown error occurred processing the header specified by the site.
+STSCouldNotParseHeader=Strict-Transport-Security: The site specified a header that could not be parsed successfully.
+STSNoMaxAge=Strict-Transport-Security: The site specified a header that did not include a 'max-age' directive.
+STSMultipleMaxAges=Strict-Transport-Security: The site specified a header that included multiple 'max-age' directives.
+STSInvalidMaxAge=Strict-Transport-Security: The site specified a header that included an invalid 'max-age' directive.
+STSMultipleIncludeSubdomains=Strict-Transport-Security: The site specified a header that included multiple 'includeSubDomains' directives.
+STSInvalidIncludeSubdomains=Strict-Transport-Security: The site specified a header that included an invalid 'includeSubDomains' directive.
+STSCouldNotSaveState=Strict-Transport-Security: An error occurred noting the site as a Strict-Transport-Security host.
+
+InsecurePasswordsPresentOnPage=Password fields present on an insecure (http://) page. This is a security risk that allows user login credentials to be stolen.
+InsecureFormActionPasswordsPresent=Password fields present in a form with an insecure (http://) form action. This is a security risk that allows user login credentials to be stolen.
+InsecurePasswordsPresentOnIframe=Password fields present on an insecure (http://) iframe. This is a security risk that allows user login credentials to be stolen.
+# LOCALIZATION NOTE: "%1$S" is the URI of the insecure mixed content resource
+LoadingMixedActiveContent2=Loading mixed (insecure) active content "%1$S" on a secure page
+LoadingMixedDisplayContent2=Loading mixed (insecure) display content "%1$S" on a secure page
+LoadingMixedDisplayObjectSubrequestDeprecation=Loading mixed (insecure) content “%1$S” within a plugin on a secure page is discouraged and will be blocked soon.
+# LOCALIZATION NOTE: "%S" is the URI of the insecure mixed content download
+MixedContentBlockedDownload = Blocked downloading insecure content “%S”.
+
+# LOCALIZATION NOTE: Do not translate "allow-scripts", "allow-same-origin", "sandbox" or "iframe"
+BothAllowScriptsAndSameOriginPresent=An iframe which has both allow-scripts and allow-same-origin for its sandbox attribute can remove its sandboxing.
+# LOCALIZATION NOTE: Do not translate "allow-top-navigation-by-user-activation", "allow-top-navigation", "sandbox" or "iframe"
+BothAllowTopNavigationAndUserActivationPresent=An iframe which has both allow-top-navigation and allow-top-navigation-by-user-activation for its sandbox attribute will permit top navigations.
+
+# Sub-Resource Integrity
+# LOCALIZATION NOTE: Do not translate "script" or "integrity". "%1$S" is the invalid token found in the attribute.
+MalformedIntegrityHash=The script element has a malformed hash in its integrity attribute: "%1$S". The correct format is "<hash algorithm>-<hash value>".
+# LOCALIZATION NOTE: Do not translate "integrity"
+InvalidIntegrityLength=The hash contained in the integrity attribute has the wrong length.
+# LOCALIZATION NOTE: Do not translate "integrity"
+InvalidIntegrityBase64=The hash contained in the integrity attribute could not be decoded.
+# LOCALIZATION NOTE: Do not translate "integrity". "%1$S" is the type of hash algorithm in use (e.g. "sha256"). "%2$S" is the value we saw.
+IntegrityMismatch2=None of the “%1$S” hashes in the integrity attribute match the content of the subresource. The computed hash is “%2$S”.
+# LOCALIZATION NOTE: "%1$S" is the URI of the sub-resource that cannot be protected using SRI.
+IneligibleResource="%1$S" is not eligible for integrity checks since it's neither CORS-enabled nor same-origin.
+# LOCALIZATION NOTE: Do not translate "integrity". "%1$S" is the invalid hash algorithm found in the attribute.
+UnsupportedHashAlg=Unsupported hash algorithm in the integrity attribute: "%1$S"
+# LOCALIZATION NOTE: Do not translate "integrity"
+NoValidMetadata=The integrity attribute does not contain any valid metadata.
+
+# LOCALIZATION NOTE: Do not translate "RC4".
+WeakCipherSuiteWarning=This site uses the cipher RC4 for encryption, which is deprecated and insecure.
+
+DeprecatedTLSVersion2=This site uses a deprecated version of TLS. Please upgrade to TLS 1.2 or 1.3.
+
+#XCTO: nosniff
+# LOCALIZATION NOTE: Do not translate "X-Content-Type-Options: nosniff".
+MimeTypeMismatch2=The resource from “%1$S” was blocked due to MIME type (“%2$S”) mismatch (X-Content-Type-Options: nosniff).
+# LOCALIZATION NOTE: Do not translate "X-Content-Type-Options" and also do not translate "nosniff".
+XCTOHeaderValueMissing=X-Content-Type-Options header warning: value was “%1$S”; did you mean to send “nosniff”?
+# LOCALIZATION NOTE: Do not translate "X-Content-Type-Options" and also do not translate "nosniff".
+XTCOWithMIMEValueMissing=The resource from “%1$S” was not rendered due to an unknown, incorrect or missing MIME type (X-Content-Type-Options: nosniff).
+
+BlockScriptWithWrongMimeType2=Script from “%1$S” was blocked because of a disallowed MIME type (“%2$S”).
+WarnScriptWithWrongMimeType=The script from “%1$S” was loaded even though its MIME type (“%2$S”) is not a valid JavaScript MIME type.
+# LOCALIZATION NOTE: Do not translate "importScripts()"
+BlockImportScriptsWithWrongMimeType=Loading script from “%1$S” with importScripts() was blocked because of a disallowed MIME type (“%2$S”).
+BlockWorkerWithWrongMimeType=Loading Worker from “%1$S” was blocked because of a disallowed MIME type (“%2$S”).
+BlockModuleWithWrongMimeType=Loading module from “%1$S” was blocked because of a disallowed MIME type (“%2$S”).
+
+# LOCALIZATION NOTE: Do not translate "data: URI".
+BlockTopLevelDataURINavigation=Navigation to toplevel data: URI not allowed (Blocked loading of: “%1$S”)
+BlockRedirectToDataURI=Redirecting to data: URI not allowed (Blocked loading of: “%1$S”)
+
+# LOCALIZATION NOTE: Do not translate "file: URI". “%1$S” is the whole URI of the loaded file. “%2$S” is the MIME type e.g. "text/plain".
+BlockFileScriptWithWrongMimeType=Loading script from file: URI (“%1$S”) was blocked because its MIME type (“%2$S”) is not a valid JavaScript MIME type.
+
+# LOCALIZATION NOTE: “%S” is the whole URI of the loaded file.
+BlockExtensionScriptWithWrongExt=Loading script with URI “%S” was blocked because the file extension is not allowed.
+
+RestrictBrowserEvalUsage=eval() and eval-like uses are not allowed in the Parent Process or in System Contexts (Blocked usage in “%1$S”)
+
+# LOCALIZATION NOTE (MixedContentAutoUpgrade):
+# %1$S is the URL of the upgraded request; %2$S is the upgraded scheme.
+MixedContentAutoUpgrade=Upgrading insecure display request ‘%1$S’ to use ‘%2$S’
+# LOCALIZATION NOTE (RunningClearSiteDataValue):
+# %S is the URI of the resource whose data was cleaned up
+RunningClearSiteDataValue=Clear-Site-Data header forced the clean up of “%S” data.
+UnknownClearSiteDataValue=Clear-Site-Data header found. Unknown value “%S”.
+
+# Reporting API
+ReportingHeaderInvalidJSON=Reporting Header: invalid JSON value received.
+ReportingHeaderInvalidNameItem=Reporting Header: invalid name for group.
+ReportingHeaderDuplicateGroup=Reporting Header: ignoring duplicated group named “%S”.
+ReportingHeaderInvalidItem=Reporting Header: ignoring invalid item named “%S”.
+ReportingHeaderInvalidEndpoint=Reporting Header: ignoring invalid endpoint for item named “%S”.
+# LOCALIZATION NOTE(ReportingHeaderInvalidURLEndpoint): %1$S is the invalid URL, %2$S is the group name
+ReportingHeaderInvalidURLEndpoint=Reporting Header: ignoring invalid endpoint URL “%1$S” for item named “%2$S”.
+
+FeaturePolicyUnsupportedFeatureName=Feature Policy: Skipping unsupported feature name “%S”.
+# TODO: would be nice to add a link to the Feature-Policy MDN documentation here. See bug 1449501
+FeaturePolicyInvalidEmptyAllowValue= Feature Policy: Skipping empty allow list for feature: “%S”.
+# TODO: would be nice to add a link to the Feature-Policy MDN documentation here. See bug 1449501
+FeaturePolicyInvalidAllowValue=Feature Policy: Skipping unsupported allow value “%S”.
+
+# LOCALIZATION NOTE: "%1$S" is the limitation length (bytes) of referrer URI, "%2$S" is the origin of the referrer URI.
+ReferrerLengthOverLimitation=HTTP Referrer header: Length is over “%1$S” bytes limit - stripping referrer header down to origin: “%2$S”
+# LOCALIZATION NOTE: "%1$S" is the limitation length (bytes) of referrer URI, "%2$S" is the origin of the referrer URI.
+ReferrerOriginLengthOverLimitation=HTTP Referrer header: Length of origin within referrer is over “%1$S” bytes limit - removing referrer with origin “%2$S”.
+
+# LOCALIZATION NOTE: Do not translate "no-referrer-when-downgrade", "origin-when-cross-origin" and "unsafe-url". %S is the URI of the loading channel.
+ReferrerPolicyDisallowRelaxingWarning=Referrer Policy: Less restricted policies, including ‘no-referrer-when-downgrade’, ‘origin-when-cross-origin’ and ‘unsafe-url’, will be ignored soon for the cross-site request: %S
+# LOCALIZATION NOTE: %1$S is the ignored referrer policy, %2$S is the URI of the loading channel.
+ReferrerPolicyDisallowRelaxingMessage=Referrer Policy: Ignoring the less restricted referrer policy “%1$S” for the cross-site request: %2$S
+
+# X-Frame-Options
+# LOCALIZATION NOTE(XFrameOptionsInvalid): %1$S is the header value, %2$S is frame URI. Do not translate "X-Frame-Options".
+XFrameOptionsInvalid = Invalid X-Frame-Options header was found when loading “%2$S”: “%1$S” is not a valid directive.
+# LOCALIZATION NOTE(XFrameOptionsDeny): %1$S is the header value, %2$S is frame URI and %3$S is the parent document URI. Do not translate "X-Frame-Options".
+XFrameOptionsDeny=The loading of “%2$S” in a frame is denied by “X-Frame-Options“ directive set to “%1$S“.
+
+# HTTPS-Only Mode
+# LOCALIZATION NOTE: %1$S is the URL of the upgraded request; %2$S is the upgraded scheme.
+HTTPSOnlyUpgradeRequest = Upgrading insecure request “%1$S” to use “%2$S”.
+# LOCALIZATION NOTE: %1$S is the URL of request.
+HTTPSOnlyNoUpgradeException = Not upgrading insecure request “%1$S” because it is exempt.
+# LOCALIZATION NOTE: %1$S is the URL of the failed request; %2$S is an error-code.
+HTTPSOnlyFailedRequest = Upgrading insecure request “%1$S” failed. (%2$S)
+# LOCALIZATION NOTE: %S is the URL of the failed request;
+HTTPSOnlyFailedDowngradeAgain = Upgrading insecure request “%S” failed. Downgrading to “http” again.
+# LOCALIZATION NOTE: Hints or indicates a new transaction for a URL is likely coming soon. We use
+# a speculative connection to start a TCP connection so that the resource is immediately ready
+# when the transaction is actually submitted. HTTPS-Only and HTTPS-First will upgrade such
+# speculative TCP connections from http to https.
+# %1$S is the URL of the upgraded speculative TCP connection; %2$S is the upgraded scheme.
+HTTPSOnlyUpgradeSpeculativeConnection = Upgrading insecure speculative TCP connection “%1$S” to use “%2$S”.
+
+HTTPSFirstSchemeless = Upgrading URL loaded in the address bar without explicit protocol scheme to use HTTPS.
+
+# LOCALIZATION NOTE: %S is the URL of the blocked request;
+IframeSandboxBlockedDownload = Download of “%S” was blocked because the triggering iframe has the sandbox flag set.
+
+# LOCALIZATION NOTE: %S is the URL of the blocked request;
+SandboxBlockedCustomProtocols = Blocked navigation to custom protocol “%S” from a sandboxed context.
+
+# Sanitizer API
+# LOCALIZATION NOTE: Please do not localize "DocumentFragment". It's the name of an API.
+SanitizerRcvdNoInput = Received empty or no input. Returning an empty DocumentFragment.
diff --git a/l10n-en-GB/dom/chrome/svg/svg.properties b/l10n-en-GB/dom/chrome/svg/svg.properties
new file mode 100644
index 0000000000..7012ec4d3c
--- /dev/null
+++ b/l10n-en-GB/dom/chrome/svg/svg.properties
@@ -0,0 +1,5 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+AttributeParseWarning=Unexpected value %2$S parsing %1$S attribute.
diff --git a/l10n-en-GB/dom/chrome/xslt/xslt.properties b/l10n-en-GB/dom/chrome/xslt/xslt.properties
new file mode 100644
index 0000000000..c52c945a59
--- /dev/null
+++ b/l10n-en-GB/dom/chrome/xslt/xslt.properties
@@ -0,0 +1,39 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+1  = Parsing an XSLT stylesheet failed.
+2  = Parsing an XPath expression failed.
+3  = 
+4  = XSLT transformation failed.
+5  = Invalid XSLT/XPath function.
+6  = XSLT Stylesheet (possibly) contains a recursion.
+7  = Attribute value illegal in XSLT 1.0.
+8  = An XPath expression was expected to return a NodeSet.
+9  = XSLT transformation was terminated by <xsl:message>.
+10 = A network error occurred loading an XSLT stylesheet:
+11 = An XSLT stylesheet does not have an XML mimetype:
+12 = An XSLT stylesheet directly or indirectly imports or includes itself:
+13 = An XPath function was called with the wrong number of arguments.
+14 = An unknown XPath extension function was called.
+15 = XPath parse failure: ')' expected:
+16 = XPath parse failure: invalid axis:
+17 = XPath parse failure: Name or Nodetype test expected:
+18 = XPath parse failure: ']' expected:
+19 = XPath parse failure: invalid variable name:
+20 = XPath parse failure: unexpected end of expression:
+21 = XPath parse failure: operator expected:
+22 = XPath parse failure: unclosed literal:
+23 = XPath parse failure: ':' unexpected:
+24 = XPath parse failure: '!' unexpected, negation is not():
+25 = XPath parse failure: illegal character found:
+26 = XPath parse failure: binary operator expected:
+27 = An XSLT stylesheet load was blocked for security reasons.
+28 = Evaluating an invalid expression.
+29 = Unbalanced curly brace.
+30 = Creating an element with an invalid QName.
+31 = Variable binding shadows variable binding within the same template.
+32 = Call to the key function not allowed.
+
+LoadingError = Error loading stylesheet: %S
+TransformError = Error during XSLT transformation: %S
diff --git a/l10n-en-GB/dom/dom/XMLPrettyPrint.ftl b/l10n-en-GB/dom/dom/XMLPrettyPrint.ftl
new file mode 100644
index 0000000000..61b5b9432b
--- /dev/null
+++ b/l10n-en-GB/dom/dom/XMLPrettyPrint.ftl
@@ -0,0 +1,5 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+xml-nostylesheet = This XML file does not appear to have any style information associated with it. The document tree is shown below.
diff --git a/l10n-en-GB/dom/dom/media.ftl b/l10n-en-GB/dom/dom/media.ftl
new file mode 100644
index 0000000000..1b1d6bcc26
--- /dev/null
+++ b/l10n-en-GB/dom/dom/media.ftl
@@ -0,0 +1,6 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+default-audio-output-device-label = Default audio output device
+mediastatus-fallback-title = { -brand-short-name } is playing media
diff --git a/l10n-en-GB/mobile/android/chrome/browser.properties b/l10n-en-GB/mobile/android/chrome/browser.properties
new file mode 100644
index 0000000000..dfcc5a9bda
--- /dev/null
+++ b/l10n-en-GB/mobile/android/chrome/browser.properties
@@ -0,0 +1,44 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# Popup Blocker
+
+# In Extension.jsm
+
+
+# LOCALIZATION NOTE (password.logins): Label that will be used in
+ # Web Console API
+stacktrace.anonymousFunction=<anonymous>
+stacktrace.outputMessage=Stack trace from %S, function %S, line %S.
+timer.start=%S: timer started
+
+# LOCALIZATION NOTE (timer.end):
+# This string is used to display the result of the console.timeEnd() call.
+# %1$S=name of timer, %2$S=number of milliseconds
+timer.end=%1$S: %2$Sms
+
+# Site settings dialog
+
+# In ContextualIdentityService.jsm
+
+# LOCALIZATION NOTE (userContextPersonal.label,
+#                    userContextWork.label,
+#                    userContextShopping.label,
+#                    userContextBanking.label,
+#                    userContextNone.label):
+# These strings specify the four predefined contexts included in support of the
+# Contextual Identity / Containers project. Each context is meant to represent
+# the context that the user is in when interacting with the site. Different
+# contexts will store cookies and other information from those sites in
+# different, isolated locations. You can enable the feature by typing
+# about:config in the URL bar and changing privacy.userContext.enabled to true.
+# Once enabled, you can open a new tab in a specific context by clicking
+# File > New Container Tab > (1 of 4 contexts). Once opened, you will see these
+# strings on the right-hand side of the URL bar.
+# In android this will be only exposed by web extensions
+userContextPersonal.label = Personal
+userContextWork.label = Work
+userContextBanking.label = Banking
+userContextShopping.label = Shopping
+
diff --git a/l10n-en-GB/mobile/android/chrome/passwordmgr.properties b/l10n-en-GB/mobile/android/chrome/passwordmgr.properties
new file mode 100644
index 0000000000..22b2d080a2
--- /dev/null
+++ b/l10n-en-GB/mobile/android/chrome/passwordmgr.properties
@@ -0,0 +1,20 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# String will be replaced by brandShortName.
+saveLogin=Would you like %S to remember this login?
+rememberButton=Remember
+neverButton=Never
+
+# String is the login's hostname
+updatePassword=Update saved password for %S?
+updatePasswordNoUser=Update saved password for this login?
+updateButton=Update
+dontUpdateButton=Don't update
+
+userSelectText2=Select which login to update:
+passwordChangeTitle=Confirm Password Change
+
+username=Username
+password=Password
diff --git a/l10n-en-GB/mobile/android/mobile/android/aboutConfig.ftl b/l10n-en-GB/mobile/android/mobile/android/aboutConfig.ftl
new file mode 100644
index 0000000000..5cb419181a
--- /dev/null
+++ b/l10n-en-GB/mobile/android/mobile/android/aboutConfig.ftl
@@ -0,0 +1,28 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+config-toolbar-search =
+    .placeholder = Search
+config-new-pref-name =
+    .placeholder = Name
+
+config-new-pref-value-boolean = Boolean
+config-new-pref-value-string = String
+config-new-pref-value-integer = Integer
+
+config-new-pref-string =
+    .placeholder = Enter a string
+config-new-pref-number =
+    .placeholder = Enter a number
+config-new-pref-cancel-button = Cancel
+config-new-pref-create-button = Create
+config-new-pref-change-button = Change
+
+config-pref-toggle-button = Toggle
+config-pref-reset-button = Reset
+
+config-context-menu-copy-pref-name =
+    .label = Copy Name
+config-context-menu-copy-pref-value =
+    .label = Copy Value
diff --git a/l10n-en-GB/mobile/android/mobile/android/geckoViewConsole.ftl b/l10n-en-GB/mobile/android/mobile/android/geckoViewConsole.ftl
new file mode 100644
index 0000000000..414b20664f
--- /dev/null
+++ b/l10n-en-GB/mobile/android/mobile/android/geckoViewConsole.ftl
@@ -0,0 +1,22 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+## Web Console API (in GeckoViewConsole.sys.mjs)
+
+console-stacktrace-anonymous-function = <anonymous>
+# Variables:
+#   $filename (String): Source file name
+#   $functionName (String): JavaScript function name
+#   $lineNumber (String): The line number of the stacktrace call
+console-stacktrace = Stack trace from { $filename }, function { $functionName }, line { $lineNumber }.
+# Variables:
+#   $name (String): user-defined name for the timer
+console-timer-start = { $name }: timer started
+# This string is used to display the result of the console.timeEnd() call.
+#
+# Variables:
+#   $name (String): user-defined name for the timer
+#   $duration (String): number of milliseconds
+console-timer-end = { $name }: { $duration }ms
diff --git a/l10n-en-GB/mobile/chrome/region.properties b/l10n-en-GB/mobile/chrome/region.properties
new file mode 100644
index 0000000000..4d0048002d
--- /dev/null
+++ b/l10n-en-GB/mobile/chrome/region.properties
@@ -0,0 +1,59 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# increment this number when anything gets changed in the list below.  This will
+# cause Firefox to re-read these prefs and inject any new handlers into the
+# profile database.  Note that "new" is defined as "has a different URL"; this
+# means that it's not possible to update the name of existing handler, so
+# don't make any spelling errors here.
+gecko.handlerService.defaultHandlersVersion=3
+
+# The default set of protocol handlers for mailto:
+gecko.handlerService.schemes.mailto.0.name=Yahoo! Mail
+gecko.handlerService.schemes.mailto.0.uriTemplate=https://compose.mail.yahoo.com/?To=%s
+gecko.handlerService.schemes.mailto.1.name=Gmail
+gecko.handlerService.schemes.mailto.1.uriTemplate=https://mail.google.com/mail/?extsrc=mailto&url=%s
+# Order of suggested websites displayed in the Top Sites panel.
+# Values for these keys must correspond to the name used in the keys that
+# define each suggested website's details. For example:
+# browser.suggestedsites.list.0=NAME
+# browser.suggestedsites.NAME.title=Displayed name
+# browser.suggestedsites.NAME.url=Website URL
+# browser.suggestedsites.NAME.bgcolor= Color (hex format)
+#
+# Note that if you remove or add items to this set, you need to adjust
+# mobile/android/tests/browser/robocop/testDistribution.java
+# to reflect the new set of IDs reported as tiles data.
+
+# This is the default set of web based feed handlers shown in the reader
+# selection UI
+browser.contentHandlers.types.0.title=My Yahoo
+browser.contentHandlers.types.0.uri=https://add.my.yahoo.com/rss?url=%s
+
+browser.suggestedsites.list.0=facebook
+browser.suggestedsites.list.1=youtube
+browser.suggestedsites.list.2=amazon
+browser.suggestedsites.list.3=wikipedia
+browser.suggestedsites.list.4=twitter
+
+browser.suggestedsites.facebook.title=Facebook
+browser.suggestedsites.facebook.url=https://m.facebook.com/
+browser.suggestedsites.facebook.bgcolor=#3B5998
+
+browser.suggestedsites.youtube.title=YouTube
+browser.suggestedsites.youtube.url=https://m.youtube.com/
+browser.suggestedsites.youtube.bgcolor=#FFFFFF
+
+browser.suggestedsites.amazon.title=Amazon
+browser.suggestedsites.amazon.url=https://www.amazon.co.uk/
+browser.suggestedsites.amazon.bgcolor=#FFFFFF
+
+browser.suggestedsites.wikipedia.title=Wikipedia
+browser.suggestedsites.wikipedia.url=https://www.wikipedia.org/
+browser.suggestedsites.wikipedia.bgcolor=#000000
+
+browser.suggestedsites.twitter.title=Twitter
+browser.suggestedsites.twitter.url=https://mobile.twitter.com/
+browser.suggestedsites.twitter.bgcolor=#38A1F3
+
diff --git a/l10n-en-GB/netwerk/necko.properties b/l10n-en-GB/netwerk/necko.properties
new file mode 100644
index 0000000000..3e2a5d23cc
--- /dev/null
+++ b/l10n-en-GB/netwerk/necko.properties
@@ -0,0 +1,100 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+3=Looking up %1$S…
+4=Connected to %1$S…
+5=Sending request to %1$S…
+6=Transferring data from %1$S…
+7=Connecting to %1$S…
+8=Read %1$S 
+9=Wrote %1$S
+10=Waiting for %1$S…
+11=Looked up %1$S…
+12=Performing a TLS handshake to %1$S…
+13=The TLS handshake finished for %1$S…
+
+RepostFormData=This web page is being redirected to a new location. Would you like to resend the form data you have typed to the new location?
+
+# Directory listing strings
+DirTitle=Index of %1$S
+DirGoUp=Up to higher level directory
+ShowHidden=Show hidden objects
+DirColName=Name
+DirColSize=Size
+DirColMTime=Last Modified
+DirFileLabel=File: 
+
+SuperfluousAuth=You are about to log in to the site “%1$S” with the username “%2$S”, but the web site does not require authentication. This may be an attempt to trick you.\n\nIs “%1$S” the site you want to visit?
+AutomaticAuth=You are about to log in to the site “%1$S” with the username “%2$S”.
+
+TrackerUriBlocked=The resource at “%1$S” was blocked because content blocking is enabled.
+UnsafeUriBlocked=The resource at “%1$S” was blocked by Safe Browsing.
+
+# LOCALIZATION NOTE (StrictUrlProtocolSetter): %1$S is the URL that has attempted to be changed. %2$S is the invalid target protocol.
+StrictUrlProtocolSetter=Url “%1$S“ change to protocol “%2$S“ was blocked.
+
+# LOCALIZATION NOTE (CORPBlocked): %1$S is the URL of the blocked resource. %2$S is the URL of the MDN page about CORP.
+CORPBlocked=The resource at “%1$S” was blocked due to its Cross-Origin-Resource-Policy header (or lack thereof). See %2$S
+CookieBlockedByPermission=Request to access cookies or storage on “%1$S” was blocked because of custom cookie permission.
+CookieBlockedTracker=Request to access cookie or storage on “%1$S” was blocked because it came from a tracker and content blocking is enabled.
+CookieBlockedAll=Request to access cookie or storage on “%1$S” was blocked because we are blocking all storage access requests.
+CookieBlockedForeign=Request to access cookie or storage on “%1$S” was blocked because we are blocking all third-party storage access requests and content blocking is enabled.
+# As part of dynamic state partitioning, third-party resources might be limited to "partitioned" storage access that is separate from the first-party context.
+# This allows e.g. cookies to still be set, and prevents tracking without totally blocking storage access. This message is shown in the web console when this happens
+# to inform developers that their storage is isolated.
+CookiePartitionedForeign2=Partitioned cookie or storage access was provided to “%1$S” because it is loaded in the third-party context and dynamic state partitioning is enabled.
+
+# LOCALIZATION NOTE (CookieAllowedForOriginByStorageAccessAPI): %2$S and %1$S are URLs.
+CookieAllowedForOriginByStorageAccessAPI=Storage access granted for origin “%2$S” on “%1$S”.
+# LOCALIZATION NOTE (CookieAllowedForOriginByHeuristic): %2$S and %1$S are URLs.
+CookieAllowedForOriginByHeuristic=Storage access automatically granted for origin “%2$S” on “%1$S”.
+# LOCALIZATION NOTE (CookieAllowedForFpiByHeuristic): %2$S and %1$S are URLs.
+CookieAllowedForFpiByHeuristic=Storage access automatically granted for First-Party isolation “%2$S” on “%1$S”.
+
+# LOCALIZATION NOTE(CookieRejectedNonRequiresSecure2): %1$S is the cookie name. Do not localize "SameSite=None" and "secure".
+CookieRejectedNonRequiresSecure2=Cookie “%1$S” rejected because it has the “SameSite=None” attribute but is missing the “secure” attribute.
+# LOCALIZATION NOTE(CookieRejectedNonRequiresSecureForBeta3): %1$S is the cookie name. %2$S is a URL. Do not localize "SameSite", "SameSite=None" and "secure".
+CookieRejectedNonRequiresSecureForBeta3=Cookie “%1$S” will be soon rejected because it has the “SameSite” attribute set to “None” without the “secure” attribute. To know more about the “SameSite“ attribute, read %2$S
+# LOCALIZATION NOTE(CookieLaxForced2): %1$S is the cookie name. Do not localize "SameSite", "Lax" and "SameSite=Lax".
+CookieLaxForced2=Cookie “%1$S” has “SameSite” policy set to “Lax” because it is missing a “SameSite” attribute, and “SameSite=Lax” is the default value for this attribute.
+# LOCALIZATION NOTE(CookieLaxForcedForBeta2): %1$S is the cookie name. %2$S is a URL. Do not localize "SameSite", "Lax" and "SameSite=Lax", "SameSite=None".
+CookieLaxForcedForBeta2=Cookie “%1$S” does not have a proper “SameSite” attribute value. Soon, cookies without the “SameSite” attribute or with an invalid value will be treated as “Lax”. This means that the cookie will no longer be sent in third-party contexts. If your application depends on this cookie being available in such contexts, please add the “SameSite=None“ attribute to it. To know more about the “SameSite“ attribute, read %2$S
+# LOCALIZATION NOTE(CookieSameSiteValueInvalid2): %1$S is cookie name. Do not localize "SameSite", "Lax", "Strict" and "None"
+CookieSameSiteValueInvalid2=Invalid “SameSite“ value for cookie “%1$S”. The supported values are: “Lax“, “Strict“, “None“.
+# LOCALIZATION NOTE (CookieOversize): %1$S is the cookie name. %2$S is the number of bytes. "B" means bytes.
+CookieOversize=Cookie “%1$S” is invalid because its size is too big. Max size is %2$S B.
+# LOCALIZATION NOTE (CookiePathOversize): %1$S is the cookie name. %2$S is the number of bytes. "B" means bytes.
+CookiePathOversize=Cookie “%1$S” is invalid because its path size is too big. Max size is %2$S B.
+# LOCALIZATION NOTE (CookieRejectedByPermissionManager): %1$S is the cookie response header.
+CookieRejectedByPermissionManager=Cookie “%1$S” has been rejected by user set permissions.
+# LOCALIZATION NOTE (CookieRejectedInvalidCharName): %1$S is the cookie name.
+CookieRejectedInvalidCharName=Cookie “%1$S” has been rejected for invalid characters in the name.
+# LOCALIZATION NOTE (CookieRejectedInvalidDomain): %1$S is the cookie name.
+CookieRejectedInvalidDomain=Cookie “%1$S” has been rejected for invalid domain.
+# LOCALIZATION NOTE (CookieRejectedInvalidPrefix): %1$S is the cookie name.
+CookieRejectedInvalidPrefix=Cookie “%1$S” has been rejected for invalid prefix.
+# LOCALIZATION NOTE (CookieRejectedInvalidCharValue): %1$S is the cookie name.
+CookieRejectedInvalidCharValue=Cookie “%1$S” has been rejected for invalid characters in the value.
+# LOCALIZATION NOTE (CookieRejectedHttpOnlyButFromScript): %1$S is the cookie name.
+CookieRejectedHttpOnlyButFromScript=Cookie “%1$S” has been rejected because there is already an HTTP-Only cookie but script tried to store a new one.
+# LOCALIZATION NOTE (CookieRejectedSecureButHttp): %1$S is the cookie name.
+CookieRejectedSecureButNonHttps=Cookie “%1$S” has been rejected because a non-HTTPS cookie can’t be set as “secure”.
+# LOCALIZATION NOTE (CookieRejectedThirdParty): %1$S is the cookie response header.
+CookieRejectedThirdParty=Cookie “%1$S” has been rejected as third-party.
+# LOCALIZATION NOTE (CookieRejectedNonsecureOverSecure): %1$S is the cookie name.
+CookieRejectedNonsecureOverSecure=Cookie “%1$S” has been rejected because there is an existing “secure” cookie.
+# LOCALIZATION NOTE (CookieRejectedForNonSameSiteness): %1$S is the cookie name.
+CookieRejectedForNonSameSiteness=Cookie “%1$S” has been rejected because it is in a cross-site context and its “SameSite” is “Lax” or “Strict”.
+
+# LOCALIZATION NOTE (CookieBlockedCrossSiteRedirect): %1$S is the cookie name. Do not translate "SameSite", "Lax" or "Strict".
+CookieBlockedCrossSiteRedirect=Cookie “%1$S” with the “SameSite” attribute value “Lax” or “Strict” was omitted because of a cross-site redirect.
+
+# LOCALIZATION NOTE (APIDeprecationWarning): %1$S is the deprecated API; %2$S is the API function that should be used.
+APIDeprecationWarning=Warning: ‘%1$S’ deprecated, please use ‘%2$S’
+
+# LOCALIZATION NOTE (ResourceBlockedCORS): %1$S is the url of the resource blocked by ORB. $2$S is the reason.
+# example: The resource at <url> was blocked by OpaqueResponseBlocking. Reason: “nosniff with either blocklisted or text/plain”.
+ResourceBlockedORB=The resource at “%1$S” was blocked by OpaqueResponseBlocking. Reason: “%2$S”.
+
+InvalidHTTPResponseStatusLine=The status line of the HTTP response is invalid
diff --git a/l10n-en-GB/security/manager/chrome/pipnss/nsserrors.properties b/l10n-en-GB/security/manager/chrome/pipnss/nsserrors.properties
new file mode 100644
index 0000000000..84a6c85ea2
--- /dev/null
+++ b/l10n-en-GB/security/manager/chrome/pipnss/nsserrors.properties
@@ -0,0 +1,331 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+SSL_ERROR_EXPORT_ONLY_SERVER=Unable to communicate securely. Peer does not support high-grade encryption.
+SSL_ERROR_US_ONLY_SERVER=Unable to communicate securely. Peer requires high-grade encryption which is not supported.
+SSL_ERROR_NO_CYPHER_OVERLAP=Cannot communicate securely with peer: no common encryption algorithm(s).
+SSL_ERROR_NO_CERTIFICATE=Unable to find the certificate or key necessary for authentication.
+SSL_ERROR_BAD_CERTIFICATE=Unable to communicate securely with peer: peers's certificate was rejected.
+SSL_ERROR_BAD_CLIENT=The server has encountered bad data from the client.
+SSL_ERROR_BAD_SERVER=The client has encountered bad data from the server.
+SSL_ERROR_UNSUPPORTED_CERTIFICATE_TYPE=Unsupported certificate type.
+SSL_ERROR_UNSUPPORTED_VERSION=Peer using unsupported version of security protocol.
+SSL_ERROR_WRONG_CERTIFICATE=Client authentication failed: private key in key database does not match public key in certificate database.
+SSL_ERROR_BAD_CERT_DOMAIN=Unable to communicate securely with peer: requested domain name does not match the server's certificate.
+SSL_ERROR_POST_WARNING=Unrecognised SSL error code.
+SSL_ERROR_SSL2_DISABLED=Peer only supports SSL version 2, which is locally disabled.
+SSL_ERROR_BAD_MAC_READ=SSL received a record with an incorrect Message Authentication Code.
+SSL_ERROR_BAD_MAC_ALERT=SSL peer reports incorrect Message Authentication Code.
+SSL_ERROR_BAD_CERT_ALERT=SSL peer cannot verify your certificate.
+SSL_ERROR_REVOKED_CERT_ALERT=SSL peer rejected your certificate as revoked.
+SSL_ERROR_EXPIRED_CERT_ALERT=SSL peer rejected your certificate as expired.
+SSL_ERROR_SSL_DISABLED=Cannot connect: SSL is disabled.
+SSL_ERROR_FORTEZZA_PQG=Cannot connect: SSL peer is in another FORTEZZA domain.
+SSL_ERROR_UNKNOWN_CIPHER_SUITE=An unknown SSL cipher suite has been requested.
+SSL_ERROR_NO_CIPHERS_SUPPORTED=No cipher suites are present and enabled in this program.
+SSL_ERROR_BAD_BLOCK_PADDING=SSL received a record with bad block padding.
+SSL_ERROR_RX_RECORD_TOO_LONG=SSL received a record that exceeded the maximum permissible length.
+SSL_ERROR_TX_RECORD_TOO_LONG=SSL attempted to send a record that exceeded the maximum permissible length.
+SSL_ERROR_RX_MALFORMED_HELLO_REQUEST=SSL received a malformed Hello Request handshake message.
+SSL_ERROR_RX_MALFORMED_CLIENT_HELLO=SSL received a malformed Client Hello handshake message.
+SSL_ERROR_RX_MALFORMED_SERVER_HELLO=SSL received a malformed Server Hello handshake message.
+SSL_ERROR_RX_MALFORMED_CERTIFICATE=SSL received a malformed Certificate handshake message.
+SSL_ERROR_RX_MALFORMED_SERVER_KEY_EXCH=SSL received a malformed Server Key Exchange handshake message.
+SSL_ERROR_RX_MALFORMED_CERT_REQUEST=SSL received a malformed Certificate Request handshake message.
+SSL_ERROR_RX_MALFORMED_HELLO_DONE=SSL received a malformed Server Hello Done handshake message.
+SSL_ERROR_RX_MALFORMED_CERT_VERIFY=SSL received a malformed Certificate Verify handshake message.
+SSL_ERROR_RX_MALFORMED_CLIENT_KEY_EXCH=SSL received a malformed Client Key Exchange handshake message.
+SSL_ERROR_RX_MALFORMED_FINISHED=SSL received a malformed Finished handshake message.
+SSL_ERROR_RX_MALFORMED_CHANGE_CIPHER=SSL received a malformed Change Cipher Spec record.
+SSL_ERROR_RX_MALFORMED_ALERT=SSL received a malformed Alert record.
+SSL_ERROR_RX_MALFORMED_HANDSHAKE=SSL received a malformed Handshake record.
+SSL_ERROR_RX_MALFORMED_APPLICATION_DATA=SSL received a malformed Application Data record.
+SSL_ERROR_RX_UNEXPECTED_HELLO_REQUEST=SSL received an unexpected Hello Request handshake message.
+SSL_ERROR_RX_UNEXPECTED_CLIENT_HELLO=SSL received an unexpected Client Hello handshake message.
+SSL_ERROR_RX_UNEXPECTED_SERVER_HELLO=SSL received an unexpected Server Hello handshake message.
+SSL_ERROR_RX_UNEXPECTED_CERTIFICATE=SSL received an unexpected Certificate handshake message.
+SSL_ERROR_RX_UNEXPECTED_SERVER_KEY_EXCH=SSL received an unexpected Server Key Exchange handshake message.
+SSL_ERROR_RX_UNEXPECTED_CERT_REQUEST=SSL received an unexpected Certificate Request handshake message.
+SSL_ERROR_RX_UNEXPECTED_HELLO_DONE=SSL received an unexpected Server Hello Done handshake message.
+SSL_ERROR_RX_UNEXPECTED_CERT_VERIFY=SSL received an unexpected Certificate Verify handshake message.
+SSL_ERROR_RX_UNEXPECTED_CLIENT_KEY_EXCH=SSL received an unexpected Client Key Exchange handshake message.
+SSL_ERROR_RX_UNEXPECTED_FINISHED=SSL received an unexpected Finished handshake message.
+SSL_ERROR_RX_UNEXPECTED_CHANGE_CIPHER=SSL received an unexpected Change Cipher Spec record.
+SSL_ERROR_RX_UNEXPECTED_ALERT=SSL received an unexpected Alert record.
+SSL_ERROR_RX_UNEXPECTED_HANDSHAKE=SSL received an unexpected Handshake record.
+SSL_ERROR_RX_UNEXPECTED_APPLICATION_DATA=SSL received an unexpected Application Data record.
+SSL_ERROR_RX_UNKNOWN_RECORD_TYPE=SSL received a record with an unknown content type.
+SSL_ERROR_RX_UNKNOWN_HANDSHAKE=SSL received a handshake message with an unknown message type.
+SSL_ERROR_RX_UNKNOWN_ALERT=SSL received an alert record with an unknown alert description.
+SSL_ERROR_CLOSE_NOTIFY_ALERT=SSL peer has closed this connection.
+SSL_ERROR_HANDSHAKE_UNEXPECTED_ALERT=SSL peer was not expecting a handshake message it received.
+SSL_ERROR_DECOMPRESSION_FAILURE_ALERT=SSL peer was unable to successfully decompress an SSL record it received.
+SSL_ERROR_HANDSHAKE_FAILURE_ALERT=SSL peer was unable to negotiate an acceptable set of security parameters.
+SSL_ERROR_ILLEGAL_PARAMETER_ALERT=SSL peer rejected a handshake message for unacceptable content.
+SSL_ERROR_UNSUPPORTED_CERT_ALERT=SSL peer does not support certificates of the type it received.
+SSL_ERROR_CERTIFICATE_UNKNOWN_ALERT=SSL peer had some unspecified issue with the certificate it received.
+SSL_ERROR_GENERATE_RANDOM_FAILURE=SSL experienced a failure of its random number generator.
+SSL_ERROR_SIGN_HASHES_FAILURE=Unable to digitally sign data required to verify your certificate.
+SSL_ERROR_EXTRACT_PUBLIC_KEY_FAILURE=SSL was unable to extract the public key from the peer's certificate.
+SSL_ERROR_SERVER_KEY_EXCHANGE_FAILURE=Unspecified failure while processing SSL Server Key Exchange handshake.
+SSL_ERROR_CLIENT_KEY_EXCHANGE_FAILURE=Unspecified failure while processing SSL Client Key Exchange handshake.
+SSL_ERROR_ENCRYPTION_FAILURE=Bulk data encryption algorithm failed in selected cipher suite.
+SSL_ERROR_DECRYPTION_FAILURE=Bulk data decryption algorithm failed in selected cipher suite.
+SSL_ERROR_SOCKET_WRITE_FAILURE=Attempt to write encrypted data to underlying socket failed.
+SSL_ERROR_MD5_DIGEST_FAILURE=MD5 digest function failed.
+SSL_ERROR_SHA_DIGEST_FAILURE=SHA-1 digest function failed.
+SSL_ERROR_MAC_COMPUTATION_FAILURE=MAC computation failed.
+SSL_ERROR_SYM_KEY_CONTEXT_FAILURE=Failure to create Symmetric Key context.
+SSL_ERROR_SYM_KEY_UNWRAP_FAILURE=Failure to unwrap the Symmetric key in Client Key Exchange message.
+SSL_ERROR_PUB_KEY_SIZE_LIMIT_EXCEEDED=SSL Server attempted to use domestic-grade public key with export cipher suite.
+SSL_ERROR_IV_PARAM_FAILURE=PKCS11 code failed to translate an IV into a param.
+SSL_ERROR_INIT_CIPHER_SUITE_FAILURE=Failed to initialise the selected cipher suite.
+SSL_ERROR_SESSION_KEY_GEN_FAILURE=Client failed to generate session keys for SSL session.
+SSL_ERROR_NO_SERVER_KEY_FOR_ALG=Server has no key for the attempted key exchange algorithm.
+SSL_ERROR_TOKEN_INSERTION_REMOVAL=PKCS#11 token was inserted or removed while operation was in progress.
+SSL_ERROR_TOKEN_SLOT_NOT_FOUND=No PKCS#11 token could be found to do a required operation.
+SSL_ERROR_NO_COMPRESSION_OVERLAP=Cannot communicate securely with peer: no common compression algorithm(s).
+SSL_ERROR_HANDSHAKE_NOT_COMPLETED=Cannot initiate another SSL handshake until current handshake is complete.
+SSL_ERROR_BAD_HANDSHAKE_HASH_VALUE=Received incorrect handshakes hash values from peer.
+SSL_ERROR_CERT_KEA_MISMATCH=The certificate provided cannot be used with the selected key exchange algorithm.
+SSL_ERROR_NO_TRUSTED_SSL_CLIENT_CA=No certificate authority is trusted for SSL client authentication.
+SSL_ERROR_SESSION_NOT_FOUND=Client's SSL session ID not found in server's session cache.
+SSL_ERROR_DECRYPTION_FAILED_ALERT=Peer was unable to decrypt an SSL record it received.
+SSL_ERROR_RECORD_OVERFLOW_ALERT=Peer received an SSL record that was longer than is permitted.
+SSL_ERROR_UNKNOWN_CA_ALERT=Peer does not recognise and trust the CA that issued your certificate.
+SSL_ERROR_ACCESS_DENIED_ALERT=Peer received a valid certificate, but access was denied.
+SSL_ERROR_DECODE_ERROR_ALERT=Peer could not decode an SSL handshake message.
+SSL_ERROR_DECRYPT_ERROR_ALERT=Peer reports failure of signature verification or key exchange.
+SSL_ERROR_EXPORT_RESTRICTION_ALERT=Peer reports negotiation not in compliance with export regulations.
+SSL_ERROR_PROTOCOL_VERSION_ALERT=Peer reports incompatible or unsupported protocol version.
+SSL_ERROR_INSUFFICIENT_SECURITY_ALERT=Server requires ciphers more secure than those supported by client.
+SSL_ERROR_INTERNAL_ERROR_ALERT=Peer reports it experienced an internal error.
+SSL_ERROR_USER_CANCELED_ALERT=Peer user cancelled handshake.
+SSL_ERROR_NO_RENEGOTIATION_ALERT=Peer does not permit renegotiation of SSL security parameters.
+SSL_ERROR_SERVER_CACHE_NOT_CONFIGURED=SSL server cache not configured and not disabled for this socket.
+SSL_ERROR_UNSUPPORTED_EXTENSION_ALERT=SSL peer does not support requested TLS hello extension.
+SSL_ERROR_CERTIFICATE_UNOBTAINABLE_ALERT=SSL peer could not obtain your certificate from the supplied URL.
+SSL_ERROR_UNRECOGNIZED_NAME_ALERT=SSL peer has no certificate for the requested DNS name.
+SSL_ERROR_BAD_CERT_STATUS_RESPONSE_ALERT=SSL peer was unable to get an OCSP response for its certificate.
+SSL_ERROR_BAD_CERT_HASH_VALUE_ALERT=SSL peer reported bad certificate hash value.
+SSL_ERROR_RX_UNEXPECTED_NEW_SESSION_TICKET=SSL received an unexpected New Session Ticket handshake message.
+SSL_ERROR_RX_MALFORMED_NEW_SESSION_TICKET=SSL received a malformed New Session Ticket handshake message.
+SSL_ERROR_DECOMPRESSION_FAILURE=SSL received a compressed record that could not be decompressed.
+SSL_ERROR_RENEGOTIATION_NOT_ALLOWED=Renegotiation is not allowed on this SSL socket.
+SSL_ERROR_UNSAFE_NEGOTIATION=Peer attempted old style (potentially vulnerable) handshake.
+SSL_ERROR_RX_UNEXPECTED_UNCOMPRESSED_RECORD=SSL received an unexpected uncompressed record.
+SSL_ERROR_WEAK_SERVER_EPHEMERAL_DH_KEY=SSL received a weak ephemeral Diffie-Hellman key in Server Key Exchange handshake message.
+SSL_ERROR_NEXT_PROTOCOL_DATA_INVALID=SSL received invalid NPN extension data.
+SSL_ERROR_FEATURE_NOT_SUPPORTED_FOR_SSL2=SSL feature not supported for SSL 2.0 connections.
+SSL_ERROR_FEATURE_NOT_SUPPORTED_FOR_SERVERS=SSL feature not supported for servers.
+SSL_ERROR_FEATURE_NOT_SUPPORTED_FOR_CLIENTS=SSL feature not supported for clients.
+SSL_ERROR_INVALID_VERSION_RANGE=SSL version range is not valid.
+SSL_ERROR_CIPHER_DISALLOWED_FOR_VERSION=SSL peer selected a cipher suite disallowed for the selected protocol version.
+SSL_ERROR_RX_MALFORMED_HELLO_VERIFY_REQUEST=SSL received a malformed Hello Verify Request handshake message.
+SSL_ERROR_RX_UNEXPECTED_HELLO_VERIFY_REQUEST=SSL received an unexpected Hello Verify Request handshake message.
+SSL_ERROR_FEATURE_NOT_SUPPORTED_FOR_VERSION=SSL feature not supported for the protocol version.
+SSL_ERROR_RX_UNEXPECTED_CERT_STATUS=SSL received an unexpected Certificate Status handshake message.
+SSL_ERROR_UNSUPPORTED_HASH_ALGORITHM=Unsupported hash algorithm used by TLS peer.
+SSL_ERROR_DIGEST_FAILURE=Digest function failed.
+SSL_ERROR_INCORRECT_SIGNATURE_ALGORITHM=Incorrect signature algorithm specified in a digitally-signed element.
+SSL_ERROR_NEXT_PROTOCOL_NO_CALLBACK=The next protocol negotiation extension was enabled, but the callback was cleared prior to being needed.
+SSL_ERROR_NEXT_PROTOCOL_NO_PROTOCOL=The server supports no protocols that the client advertises in the ALPN extension.
+SSL_ERROR_INAPPROPRIATE_FALLBACK_ALERT=The server rejected the handshake because the client downgraded to a lower TLS version than the server supports.
+SSL_ERROR_WEAK_SERVER_CERT_KEY=The server certificate included a public key that was too weak.
+SSL_ERROR_RX_SHORT_DTLS_READ=Not enough room in buffer for DTLS record.
+SSL_ERROR_NO_SUPPORTED_SIGNATURE_ALGORITHM=No supported TLS signature algorithm was configured.
+SSL_ERROR_UNSUPPORTED_SIGNATURE_ALGORITHM=The peer used an unsupported combination of signature and hash algorithm.
+SSL_ERROR_MISSING_EXTENDED_MASTER_SECRET=The peer tried to resume without a correct extended_master_secret extension.
+SSL_ERROR_UNEXPECTED_EXTENDED_MASTER_SECRET=The peer tried to resume with an unexpected extended_master_secret extension.
+SEC_ERROR_IO=An I/O error occurred during security authorisation.
+SEC_ERROR_LIBRARY_FAILURE=security library failure.
+SEC_ERROR_BAD_DATA=security library: received bad data.
+SEC_ERROR_OUTPUT_LEN=security library: output length error.
+SEC_ERROR_INPUT_LEN=security library has experienced an input length error.
+SEC_ERROR_INVALID_ARGS=security library: invalid arguments.
+SEC_ERROR_INVALID_ALGORITHM=security library: invalid algorithm.
+SEC_ERROR_INVALID_AVA=security library: invalid AVA.
+SEC_ERROR_INVALID_TIME=Improperly formatted time string.
+SEC_ERROR_BAD_DER=security library: improperly formatted DER-encoded message.
+SEC_ERROR_BAD_SIGNATURE=Peer's certificate has an invalid signature.
+SEC_ERROR_EXPIRED_CERTIFICATE=Peer's Certificate has expired.
+SEC_ERROR_REVOKED_CERTIFICATE=Peer's Certificate has been revoked.
+SEC_ERROR_UNKNOWN_ISSUER=Peer's Certificate issuer is not recognised.
+SEC_ERROR_BAD_KEY=Peer's public key is invalid.
+SEC_ERROR_BAD_PASSWORD=The security password entered is incorrect.
+SEC_ERROR_RETRY_PASSWORD=New password entered incorrectly. Please try again.
+SEC_ERROR_NO_NODELOCK=security library: no nodelock.
+SEC_ERROR_BAD_DATABASE=security library: bad database.
+SEC_ERROR_NO_MEMORY=security library: memory allocation failure.
+SEC_ERROR_UNTRUSTED_ISSUER=Peer's certificate issuer has been marked as not trusted by the user.
+SEC_ERROR_UNTRUSTED_CERT=Peer's certificate has been marked as not trusted by the user.
+SEC_ERROR_DUPLICATE_CERT=Certificate already exists in your database.
+SEC_ERROR_DUPLICATE_CERT_NAME=Downloaded certificate's name duplicates one already in your database.
+SEC_ERROR_ADDING_CERT=Error adding certificate to database.
+SEC_ERROR_FILING_KEY=Error refiling the key for this certificate.
+SEC_ERROR_NO_KEY=The private key for this certificate cannot be found in key database
+SEC_ERROR_CERT_VALID=This certificate is valid.
+SEC_ERROR_CERT_NOT_VALID=This certificate is not valid.
+SEC_ERROR_CERT_NO_RESPONSE=Cert Library: No Response
+SEC_ERROR_EXPIRED_ISSUER_CERTIFICATE=The certificate issuer's certificate has expired. Check your system date and time.
+SEC_ERROR_CRL_EXPIRED=The CRL for the certificate's issuer has expired. Update it or check your system date and time.
+SEC_ERROR_CRL_BAD_SIGNATURE=The CRL for the certificate's issuer has an invalid signature.
+SEC_ERROR_CRL_INVALID=New CRL has an invalid format.
+SEC_ERROR_EXTENSION_VALUE_INVALID=Certificate extension value is invalid.
+SEC_ERROR_EXTENSION_NOT_FOUND=Certificate extension not found.
+SEC_ERROR_CA_CERT_INVALID=Issuer certificate is invalid.
+SEC_ERROR_PATH_LEN_CONSTRAINT_INVALID=Certificate path length constraint is invalid.
+SEC_ERROR_CERT_USAGES_INVALID=Certificate usages field is invalid.
+SEC_INTERNAL_ONLY=**Internal ONLY module**
+SEC_ERROR_INVALID_KEY=The key does not support the requested operation.
+SEC_ERROR_UNKNOWN_CRITICAL_EXTENSION=Certificate contains unknown critical extension.
+SEC_ERROR_OLD_CRL=New CRL is not later than the current one.
+SEC_ERROR_NO_EMAIL_CERT=Not encrypted or signed: you do not yet have an email certificate.
+SEC_ERROR_NO_RECIPIENT_CERTS_QUERY=Not encrypted: you do not have certificates for each of the recipients.
+SEC_ERROR_NOT_A_RECIPIENT=Cannot decrypt: you are not a recipient, or matching certificate and private key not found.
+SEC_ERROR_PKCS7_KEYALG_MISMATCH=Cannot decrypt: key encryption algorithm does not match your certificate.
+SEC_ERROR_PKCS7_BAD_SIGNATURE=Signature verification failed: no signer found, too many signers found, or improper or corrupted data.
+SEC_ERROR_UNSUPPORTED_KEYALG=Unsupported or unknown key algorithm.
+SEC_ERROR_DECRYPTION_DISALLOWED=Cannot decrypt: encrypted using a disallowed algorithm or key size.
+XP_SEC_FORTEZZA_BAD_CARD=Fortezza card has not been properly initialised. Please remove it and return it to your issuer.
+XP_SEC_FORTEZZA_NO_CARD=No Fortezza cards Found
+XP_SEC_FORTEZZA_NONE_SELECTED=No Fortezza card selected
+XP_SEC_FORTEZZA_MORE_INFO=Please select a personality to get more info on
+XP_SEC_FORTEZZA_PERSON_NOT_FOUND=Personality not found
+XP_SEC_FORTEZZA_NO_MORE_INFO=No more information on that Personality
+XP_SEC_FORTEZZA_BAD_PIN=Invalid Pin
+XP_SEC_FORTEZZA_PERSON_ERROR=Couldn't initialise Fortezza personalities.
+SEC_ERROR_NO_KRL=No KRL for this site's certificate has been found.
+SEC_ERROR_KRL_EXPIRED=The KRL for this site's certificate has expired.
+SEC_ERROR_KRL_BAD_SIGNATURE=The KRL for this site's certificate has an invalid signature.
+SEC_ERROR_REVOKED_KEY=The key for this site's certificate has been revoked.
+SEC_ERROR_KRL_INVALID=New KRL has an invalid format.
+SEC_ERROR_NEED_RANDOM=security library: need random data.
+SEC_ERROR_NO_MODULE=security library: no security module can perform the requested operation.
+SEC_ERROR_NO_TOKEN=The security card or token does not exist, needs to be initialised, or has been removed.
+SEC_ERROR_READ_ONLY=security library: read-only database.
+SEC_ERROR_NO_SLOT_SELECTED=No slot or token was selected.
+SEC_ERROR_CERT_NICKNAME_COLLISION=A certificate with the same nickname already exists.
+SEC_ERROR_KEY_NICKNAME_COLLISION=A key with the same nickname already exists.
+SEC_ERROR_SAFE_NOT_CREATED=error while creating safe object
+SEC_ERROR_BAGGAGE_NOT_CREATED=error while creating baggage object
+XP_JAVA_REMOVE_PRINCIPAL_ERROR=Couldn't remove the principal
+XP_JAVA_DELETE_PRIVILEGE_ERROR=Couldn't delete the privilege
+XP_JAVA_CERT_NOT_EXISTS_ERROR=This principal doesn't have a certificate
+SEC_ERROR_BAD_EXPORT_ALGORITHM=Required algorithm is not allowed.
+SEC_ERROR_EXPORTING_CERTIFICATES=Error attempting to export certificates.
+SEC_ERROR_IMPORTING_CERTIFICATES=Error attempting to import certificates.
+SEC_ERROR_PKCS12_DECODING_PFX=Unable to import. Decoding error. File not valid.
+SEC_ERROR_PKCS12_INVALID_MAC=Unable to import. Invalid MAC. Incorrect password or corrupt file.
+SEC_ERROR_PKCS12_UNSUPPORTED_MAC_ALGORITHM=Unable to import. MAC algorithm not supported.
+SEC_ERROR_PKCS12_UNSUPPORTED_TRANSPORT_MODE=Unable to import. Only password integrity and privacy modes supported.
+SEC_ERROR_PKCS12_CORRUPT_PFX_STRUCTURE=Unable to import. File structure is corrupt.
+SEC_ERROR_PKCS12_UNSUPPORTED_PBE_ALGORITHM=Unable to import. Encryption algorithm not supported.
+SEC_ERROR_PKCS12_UNSUPPORTED_VERSION=Unable to import. File version not supported.
+SEC_ERROR_PKCS12_PRIVACY_PASSWORD_INCORRECT=Unable to import. Incorrect privacy password.
+SEC_ERROR_PKCS12_CERT_COLLISION=Unable to import. Same nickname already exists in database.
+SEC_ERROR_USER_CANCELLED=The user pressed cancel.
+SEC_ERROR_PKCS12_DUPLICATE_DATA=Not imported, already in database.
+SEC_ERROR_MESSAGE_SEND_ABORTED=Message not sent.
+SEC_ERROR_INADEQUATE_KEY_USAGE=Certificate key usage inadequate for attempted operation.
+SEC_ERROR_INADEQUATE_CERT_TYPE=Certificate type not approved for application.
+SEC_ERROR_CERT_ADDR_MISMATCH=Address in signing certificate does not match address in message headers.
+SEC_ERROR_PKCS12_UNABLE_TO_IMPORT_KEY=Unable to import. Error attempting to import private key.
+SEC_ERROR_PKCS12_IMPORTING_CERT_CHAIN=Unable to import. Error attempting to import certificate chain.
+SEC_ERROR_PKCS12_UNABLE_TO_LOCATE_OBJECT_BY_NAME=Unable to export. Unable to locate certificate or key by nickname.
+SEC_ERROR_PKCS12_UNABLE_TO_EXPORT_KEY=Unable to export. Private Key could not be located and exported.
+SEC_ERROR_PKCS12_UNABLE_TO_WRITE=Unable to export. Unable to write the export file.
+SEC_ERROR_PKCS12_UNABLE_TO_READ=Unable to import. Unable to read the import file.
+SEC_ERROR_PKCS12_KEY_DATABASE_NOT_INITIALIZED=Unable to export. Key database corrupt or deleted.
+SEC_ERROR_KEYGEN_FAIL=Unable to generate public/private key pair.
+SEC_ERROR_INVALID_PASSWORD=Password entered is invalid. Please pick a different one.
+SEC_ERROR_RETRY_OLD_PASSWORD=Old password entered incorrectly. Please try again.
+SEC_ERROR_BAD_NICKNAME=Certificate nickname already in use.
+SEC_ERROR_NOT_FORTEZZA_ISSUER=Peer FORTEZZA chain has a non-FORTEZZA Certificate.
+SEC_ERROR_CANNOT_MOVE_SENSITIVE_KEY=A sensitive key cannot be moved to the slot where it is needed.
+SEC_ERROR_JS_INVALID_MODULE_NAME=Invalid module name.
+SEC_ERROR_JS_INVALID_DLL=Invalid module path/filename
+SEC_ERROR_JS_ADD_MOD_FAILURE=Unable to add module
+SEC_ERROR_JS_DEL_MOD_FAILURE=Unable to delete module
+SEC_ERROR_OLD_KRL=New KRL is not later than the current one.
+SEC_ERROR_CKL_CONFLICT=New CKL has different issuer than current CKL. Delete current CKL.
+SEC_ERROR_CERT_NOT_IN_NAME_SPACE=The Certifying Authority for this certificate is not permitted to issue a certificate with this name.
+SEC_ERROR_KRL_NOT_YET_VALID=The key revocation list for this certificate is not yet valid.
+SEC_ERROR_CRL_NOT_YET_VALID=The certificate revocation list for this certificate is not yet valid.
+SEC_ERROR_UNKNOWN_CERT=The requested certificate could not be found.
+SEC_ERROR_UNKNOWN_SIGNER=The signer's certificate could not be found.
+SEC_ERROR_CERT_BAD_ACCESS_LOCATION=The location for the certificate status server has invalid format.
+SEC_ERROR_OCSP_UNKNOWN_RESPONSE_TYPE=The OCSP response cannot be fully decoded; it is of an unknown type.
+SEC_ERROR_OCSP_BAD_HTTP_RESPONSE=The OCSP server returned unexpected/invalid HTTP data.
+SEC_ERROR_OCSP_MALFORMED_REQUEST=The OCSP server found the request to be corrupted or improperly formed.
+SEC_ERROR_OCSP_SERVER_ERROR=The OCSP server experienced an internal error.
+SEC_ERROR_OCSP_TRY_SERVER_LATER=The OCSP server suggests trying again later.
+SEC_ERROR_OCSP_REQUEST_NEEDS_SIG=The OCSP server requires a signature on this request.
+SEC_ERROR_OCSP_UNAUTHORIZED_REQUEST=The OCSP server has refused this request as unauthorised.
+SEC_ERROR_OCSP_UNKNOWN_RESPONSE_STATUS=The OCSP server returned an unrecognisable status.
+SEC_ERROR_OCSP_UNKNOWN_CERT=The OCSP server has no status for the certificate.
+SEC_ERROR_OCSP_NOT_ENABLED=You must enable OCSP before performing this operation.
+SEC_ERROR_OCSP_NO_DEFAULT_RESPONDER=You must set the OCSP default responder before performing this operation.
+SEC_ERROR_OCSP_MALFORMED_RESPONSE=The response from the OCSP server was corrupted or improperly formed.
+SEC_ERROR_OCSP_UNAUTHORIZED_RESPONSE=The signer of the OCSP response is not authorised to give status for this certificate.
+SEC_ERROR_OCSP_FUTURE_RESPONSE=The OCSP response is not yet valid (contains a date in the future).
+SEC_ERROR_OCSP_OLD_RESPONSE=The OCSP response contains out-of-date information.
+SEC_ERROR_DIGEST_NOT_FOUND=The CMS or PKCS #7 Digest was not found in signed message.
+SEC_ERROR_UNSUPPORTED_MESSAGE_TYPE=The CMS or PKCS #7 Message type is unsupported.
+SEC_ERROR_MODULE_STUCK=PKCS #11 module could not be removed because it is still in use.
+SEC_ERROR_BAD_TEMPLATE=Could not decode ASN.1 data. Specified template was invalid.
+SEC_ERROR_CRL_NOT_FOUND=No matching CRL was found.
+SEC_ERROR_REUSED_ISSUER_AND_SERIAL=You are attempting to import a cert with the same issuer/serial as an existing cert, but that is not the same cert.
+SEC_ERROR_BUSY=NSS could not shutdown. Objects are still in use.
+SEC_ERROR_EXTRA_INPUT=DER-encoded message contained extra unused data.
+SEC_ERROR_UNSUPPORTED_ELLIPTIC_CURVE=Unsupported elliptic curve.
+SEC_ERROR_UNSUPPORTED_EC_POINT_FORM=Unsupported elliptic curve point form.
+SEC_ERROR_UNRECOGNIZED_OID=Unrecognised Object Identifier.
+SEC_ERROR_OCSP_INVALID_SIGNING_CERT=Invalid OCSP signing certificate in OCSP response.
+SEC_ERROR_REVOKED_CERTIFICATE_CRL=Certificate is revoked in issuer's certificate revocation list.
+SEC_ERROR_REVOKED_CERTIFICATE_OCSP=Issuer's OCSP responder reports certificate is revoked.
+SEC_ERROR_CRL_INVALID_VERSION=Issuer's Certificate Revocation List has an unknown version number.
+SEC_ERROR_CRL_V1_CRITICAL_EXTENSION=Issuer's V1 Certificate Revocation List has a critical extension.
+SEC_ERROR_CRL_UNKNOWN_CRITICAL_EXTENSION=Issuer's V2 Certificate Revocation List has an unknown critical extension.
+SEC_ERROR_UNKNOWN_OBJECT_TYPE=Unknown object type specified.
+SEC_ERROR_INCOMPATIBLE_PKCS11=PKCS #11 driver violates the spec in an incompatible way.
+SEC_ERROR_NO_EVENT=No new slot event is available at this time.
+SEC_ERROR_CRL_ALREADY_EXISTS=CRL already exists.
+SEC_ERROR_NOT_INITIALIZED=NSS is not initialised.
+SEC_ERROR_TOKEN_NOT_LOGGED_IN=The operation failed because the PKCS#11 token is not logged in.
+SEC_ERROR_OCSP_RESPONDER_CERT_INVALID=Configured OCSP responder's certificate is invalid.
+SEC_ERROR_OCSP_BAD_SIGNATURE=OCSP response has an invalid signature.
+SEC_ERROR_OUT_OF_SEARCH_LIMITS=Certificate validation search is out of search limits
+SEC_ERROR_INVALID_POLICY_MAPPING=Policy mapping contains anypolicy
+SEC_ERROR_POLICY_VALIDATION_FAILED=Certificate chain fails policy validation
+SEC_ERROR_UNKNOWN_AIA_LOCATION_TYPE=Unknown location type in cert AIA extension
+SEC_ERROR_BAD_HTTP_RESPONSE=Server returned bad HTTP response
+SEC_ERROR_BAD_LDAP_RESPONSE=Server returned bad LDAP response
+SEC_ERROR_FAILED_TO_ENCODE_DATA=Failed to encode data with ASN1 encoder
+SEC_ERROR_BAD_INFO_ACCESS_LOCATION=Bad information access location in certificate extension
+SEC_ERROR_LIBPKIX_INTERNAL=Libpkix internal error occured during certificate validation.
+SEC_ERROR_PKCS11_GENERAL_ERROR=A PKCS #11 module returned CKR_GENERAL_ERROR, indicating that an unrecoverable error has occurred.
+SEC_ERROR_PKCS11_FUNCTION_FAILED=A PKCS #11 module returned CKR_FUNCTION_FAILED, indicating that the requested function could not be performed. Trying the same operation again might succeed.
+SEC_ERROR_PKCS11_DEVICE_ERROR=A PKCS #11 module returned CKR_DEVICE_ERROR, indicating that a problem has occurred with the token or slot.
+SEC_ERROR_BAD_INFO_ACCESS_METHOD=Unknown information access method in certificate extension.
+SEC_ERROR_CRL_IMPORT_FAILED=Error attempting to import a CRL.
+SEC_ERROR_EXPIRED_PASSWORD=The password expired.
+SEC_ERROR_LOCKED_PASSWORD=The password is locked.
+SEC_ERROR_UNKNOWN_PKCS11_ERROR=Unknown PKCS #11 error.
+SEC_ERROR_BAD_CRL_DP_URL=Invalid or unsupported URL in CRL distribution point name.
+SEC_ERROR_CERT_SIGNATURE_ALGORITHM_DISABLED=The certificate was signed using an signature algorithm that is disabled because it is not secure.
+MOZILLA_PKIX_ERROR_KEY_PINNING_FAILURE=The server uses key pinning (HPKP) but no trusted certificate chain could be constructed that matches the pinset. Key pinning violations cannot be overridden.
+MOZILLA_PKIX_ERROR_CA_CERT_USED_AS_END_ENTITY=The server uses a certificate with a basic constraints extension identifying it as a certificate authority. For a properly-issued certificate, this should not be the case.
+MOZILLA_PKIX_ERROR_INADEQUATE_KEY_SIZE=The server presented a certificate with a key size that is too small to establish a secure connection.
+MOZILLA_PKIX_ERROR_V1_CERT_USED_AS_CA=An X.509 version 1 certificate that is not a trust anchor was used to issue the server's certificate. X.509 version 1 certificates are deprecated and should not be used to sign other certificates.
+MOZILLA_PKIX_ERROR_NOT_YET_VALID_CERTIFICATE=The server presented a certificate that is not yet valid.
+MOZILLA_PKIX_ERROR_NOT_YET_VALID_ISSUER_CERTIFICATE=A certificate that is not yet valid was used to issue the server's certificate.
+MOZILLA_PKIX_ERROR_SIGNATURE_ALGORITHM_MISMATCH=The signature algorithm in the signature field of the certificate does not match the algorithm in its signatureAlgorithm field.
+MOZILLA_PKIX_ERROR_OCSP_RESPONSE_FOR_CERT_MISSING=The OCSP response does not include a status for the certificate being verified.
+MOZILLA_PKIX_ERROR_VALIDITY_TOO_LONG=The server presented a certificate that is valid for too long.
+MOZILLA_PKIX_ERROR_REQUIRED_TLS_FEATURE_MISSING=A required TLS feature is missing.
+MOZILLA_PKIX_ERROR_INVALID_INTEGER_ENCODING=The server presented a certificate that contains an invalid encoding of an integer. Common causes include negative serial numbers, negative RSA moduli, and encodings that are longer than necessary.
+MOZILLA_PKIX_ERROR_EMPTY_ISSUER_NAME=The server presented a certificate with an empty issuer distinguished name.
+MOZILLA_PKIX_ERROR_ADDITIONAL_POLICY_CONSTRAINT_FAILED=An additional policy constraint failed when validating this certificate.
+MOZILLA_PKIX_ERROR_SELF_SIGNED_CERT=The certificate is not trusted because it is self-signed.
diff --git a/l10n-en-GB/security/manager/chrome/pipnss/pipnss.properties b/l10n-en-GB/security/manager/chrome/pipnss/pipnss.properties
new file mode 100644
index 0000000000..8953a410c3
--- /dev/null
+++ b/l10n-en-GB/security/manager/chrome/pipnss/pipnss.properties
@@ -0,0 +1,136 @@
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+CertPasswordPrompt=Please enter the password for the PKCS#11 token %S.
+
+CertPasswordPromptDefault=Please enter your Primary Password.
+
+# The following strings have special requirements: they must fit in a 32 or 64
+# bytes buffer after being encoded to UTF-8.
+#
+# It's possible to verify the length of a translation using the Browser Console
+# in Firefox and evaluating the following code:
+#
+# (new TextEncoder('utf-8').encode('YOURSTRING')).length
+#
+# Simply replace YOURSTRING with your translation.
+#
+# If it's not possible to produce an understandable translation within these
+# limits, keeping the English text is an acceptable workaround.
+
+# The following strings have special requirements: they must fit in a 32 or 64
+# bytes buffer after being encoded to UTF-8.
+#
+# It's possible to verify the length of a translation using the Browser Console
+# in Firefox and evaluating the following code:
+#
+# (new TextEncoder().encode('YOURSTRING')).length
+#
+# Simply replace YOURSTRING with your translation.
+#
+# If it's not possible to produce an understandable translation within these
+# limits, keeping the English text is an acceptable workaround.
+
+# LOCALIZATION NOTE (RootCertModuleName): string limit is 64 bytes after
+# conversion to UTF-8.
+# length_limit = 64 bytes
+RootCertModuleName=Builtin Roots Module
+# LOCALIZATION NOTE (ManufacturerID): string limit is 32 bytes after conversion
+# to UTF-8.
+# length_limit = 32 bytes
+ManufacturerID=Mozilla.org
+# LOCALIZATION NOTE (LibraryDescription): string limit is 32 bytes after
+# conversion to UTF-8.
+# length_limit = 32 bytes
+LibraryDescription=PSM Internal Crypto Services
+# LOCALIZATION NOTE (TokenDescription): string limit is 32 bytes after
+# conversion to UTF-8.
+# length_limit = 32 bytes
+TokenDescription=Generic Crypto Services
+# LOCALIZATION NOTE (PrivateTokenDescription): string limit is 32 bytes after
+# conversion to UTF-8.
+# length_limit = 32 bytes
+PrivateTokenDescription=Software Security Device
+# LOCALIZATION NOTE (SlotDescription): string limit is 64 bytes after conversion
+# to UTF-8.
+# length_limit = 64 bytes
+SlotDescription=PSM Internal Cryptographic Services
+# LOCALIZATION NOTE (PrivateSlotDescription): string limit is 64 bytes after
+# conversion to UTF-8.
+# length_limit = 64 bytes
+PrivateSlotDescription=PSM Private Keys
+# LOCALIZATION NOTE (Fips140TokenDescription): string limit is 32 bytes after
+# conversion to UTF-8.
+# length_limit = 32 bytes
+Fips140TokenDescription=Software Security Device (FIPS)
+# LOCALIZATION NOTE (Fips140SlotDescription): string limit is 64 bytes after
+# conversion to UTF-8.
+# length_limit = 64 bytes
+Fips140SlotDescription=FIPS 140 Cryptographic, Key and Certificate Services
+
+# LOCALIZATION NOTE (nick_template): $1s is the common name from a cert (e.g. "Mozilla"), $2s is the CA name (e.g. VeriSign)
+nick_template=%1$s's %2$s ID
+
+CertDumpKUSign=Signing
+CertDumpKUNonRep=Non-repudiation
+CertDumpKUEnc=Key Encipherment
+CertDumpKUDEnc=Data Encipherment
+CertDumpKUKA=Key Agreement
+CertDumpKUCertSign=Certificate Signer
+CertDumpKUCRLSigner=CRL Signer
+
+PSMERR_SSL_Disabled=Can't connect securely because the SSL protocol has been disabled.
+PSMERR_SSL2_Disabled=Can't connect securely because the site uses an older, insecure version of the SSL protocol.
+PSMERR_HostReusedIssuerSerial=You have received an invalid certificate.  Please contact the server administrator or email correspondent and give them the following information:\n\nYour certificate contains the same serial number as another certificate issued by the certificate authority.  Please get a new certificate containing a unique serial number.
+
+# LOCALIZATION NOTE (SSLConnectionErrorPrefix2): %1$S is the host string, %2$S is more detailed information (localized as well).
+SSLConnectionErrorPrefix2=An error occurred during a connection to %1$S. %2$S\n
+
+certErrorIntro=%S uses an invalid security certificate.
+
+certErrorTrust_SelfSigned=The certificate is not trusted because it is self-signed.
+certErrorTrust_UnknownIssuer=The certificate is not trusted because the issuer certificate is unknown.
+certErrorTrust_UnknownIssuer2=The server might not be sending the appropriate intermediate certificates.
+certErrorTrust_UnknownIssuer3=An additional root certificate may need to be imported.
+certErrorTrust_CaInvalid=The certificate is not trusted because it was issued by an invalid CA certificate.
+certErrorTrust_Issuer=The certificate is not trusted because the issuer certificate is not trusted.
+certErrorTrust_SignatureAlgorithmDisabled=The certificate is not trusted because it was signed using a signature algorithm that was disabled because that algorithm is not secure.
+certErrorTrust_ExpiredIssuer=The certificate is not trusted because the issuer certificate has expired.
+certErrorTrust_Untrusted=The certificate does not come from a trusted source.
+certErrorTrust_MitM=Your connection is being intercepted by a TLS proxy. Uninstall it if possible or configure your device to trust its root certificate.
+
+certErrorMismatch=The certificate is not valid for the name %S.
+# LOCALIZATION NOTE (certErrorMismatchSinglePrefix): %S is replaced by the domain for which the certificate is valid
+certErrorMismatchSinglePrefix=The certificate is only valid for %S.
+certErrorMismatchMultiple=The certificate is only valid for the following names:
+
+# LOCALIZATION NOTE (certErrorExpiredNow): Do not translate %1$S (date+time of expired certificate) or %2$S (current date+time)
+certErrorExpiredNow=The certificate expired on %1$S. The current time is %2$S.
+
+# LOCALIZATION NOTE (certErrorNotYetValidNow): Do not translate %1$S (date+time certificate will become valid) or %2$S (current date+time)
+certErrorNotYetValidNow=The certificate will not be valid until %1$S. The current time is %2$S.
+
+certErrorMitM=Web sites prove their identity via certificates, which are issued by certificate authorities.
+# LOCALIZATION NOTE (certErrorMitM2): %S is brandShortName
+certErrorMitM2=%S is backed by the non-profit Mozilla, which administers a completely open certificate authority (CA) store. The CA store helps ensure that certificate authorities are following best practices for user security.
+# LOCALIZATION NOTE (certErrorMitM3): %S is brandShortName
+certErrorMitM3=%S uses the Mozilla CA store to verify that a connection is secure, rather than certificates supplied by the user’s operating system. So, if an antivirus program or a network is intercepting a connection with a security certificate issued by a CA that is not in the Mozilla CA store, the connection is considered unsafe.
+
+certErrorSymantecDistrustAdministrator=You may notify the web site’s administrator about this problem.
+
+# LOCALIZATION NOTE (certErrorCodePrefix3): %S is replaced by the error code.
+certErrorCodePrefix3=Error code: %S
+
+P12DefaultNickname=Imported Certificate
+CertUnknown=Unknown
+CertNoEmailAddress=(no email address)
+CaCertExists=This certificate is already installed as a certificate authority.
+NotACACert=This is not a certificate authority certificate, so it can't be imported into the certificate authority list.
+UserCertIgnoredNoPrivateKey=This personal certificate can't be installed because you do not own the corresponding private key which was created when the certificate was requested.
+UserCertImported=Your personal certificate has been installed. You should keep a backup copy of this certificate.
+CertOrgUnknown=(Unknown)
+CertNotStored=(Not Stored)
+CertExceptionPermanent=Permanent
+CertExceptionTemporary=Temporary
diff --git a/l10n-en-GB/security/manager/chrome/pippki/pippki.properties b/l10n-en-GB/security/manager/chrome/pippki/pippki.properties
new file mode 100644
index 0000000000..9a79994ed8
--- /dev/null
+++ b/l10n-en-GB/security/manager/chrome/pippki/pippki.properties
@@ -0,0 +1,75 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# Download Cert dialog
+# LOCALIZATION NOTE(newCAMessage1):
+# %S is a string representative of the certificate being downloaded/imported.
+newCAMessage1=Do you want to trust "%S" for the following purposes?
+unnamedCA=Certificate Authority (unnamed)
+
+getPKCS12FilePasswordMessage=Please enter the password that was used to encrypt this certificate backup:
+
+# Client auth
+clientAuthRemember=Remember this decision
+# LOCALIZATION NOTE(clientAuthNickAndSerial): Represents a single cert when the
+# user is choosing from a list of certificates.
+# %1$S is the nickname of the cert.
+# %2$S is the serial number of the cert in AA:BB:CC hex format.
+clientAuthNickAndSerial=%1$S [%2$S]
+# LOCALIZATION NOTE(clientAuthHostnameAndPort):
+# %1$S is the hostname of the server.
+# %2$S is the port of the server.
+clientAuthHostnameAndPort=%1$S:%2$S
+# LOCALIZATION NOTE(clientAuthMessage1): %S is the Organization of the server
+# cert.
+clientAuthMessage1=Organisation: "%S"
+# LOCALIZATION NOTE(clientAuthMessage2): %S is the Organization of the issuer
+# cert of the server cert.
+clientAuthMessage2=Issued Under: "%S"
+# LOCALIZATION NOTE(clientAuthIssuedTo): %1$S is the Distinguished Name of the
+# currently selected client cert, such as "CN=John Doe,OU=Example" (without
+# quotes).
+clientAuthIssuedTo=Issued to: %1$S
+# LOCALIZATION NOTE(clientAuthSerial): %1$S is the serial number of the selected
+# cert in AA:BB:CC hex format.
+clientAuthSerial=Serial number: %1$S
+# LOCALIZATION NOTE(clientAuthValidityPeriod):
+# %1$S is the already localized notBefore date of the selected cert.
+# %2$S is the already localized notAfter date of the selected cert.
+clientAuthValidityPeriod=Valid from %1$S to %2$S
+# LOCALIZATION NOTE(clientAuthKeyUsages): %1$S is a comma separated list of
+# already localized key usages the selected cert is valid for.
+clientAuthKeyUsages=Key Usages: %1$S
+# LOCALIZATION NOTE(clientAuthEmailAddresses): %1$S is a comma separated list of
+# e-mail addresses the selected cert is valid for.
+clientAuthEmailAddresses=Email addresses: %1$S
+# LOCALIZATION NOTE(clientAuthIssuedBy): %1$S is the Distinguished Name of the
+# cert which issued the selected cert.
+clientAuthIssuedBy=Issued by: %1$S
+# LOCALIZATION NOTE(clientAuthStoredOn): %1$S is the name of the PKCS #11 token
+# the selected cert is stored on.
+clientAuthStoredOn=Stored on: %1$S
+
+# Page Info
+pageInfo_NoEncryption=Connection Not Encrypted
+pageInfo_Privacy_None1=The web site %S does not support encryption for the page you are viewing.
+pageInfo_Privacy_None2=Information sent over the Internet without encryption can be seen by other people while it is in transit. 
+pageInfo_Privacy_None4=The page you are viewing was not encrypted before being transmitted over the Internet.
+# LOCALIZATION NOTE (pageInfo_EncryptionWithBitsAndProtocol and pageInfo_BrokenEncryption):
+# %1$S is the name of the encryption standard,
+# %2$S is the key size of the cipher.
+# %3$S is protocol version like "SSL 3" or "TLS 1.2"
+pageInfo_EncryptionWithBitsAndProtocol=Connection Encrypted (%1$S, %2$S bit keys, %3$S)
+pageInfo_BrokenEncryption=Broken Encryption (%1$S, %2$S bit keys, %3$S)
+pageInfo_Privacy_Encrypted1=The page you are viewing was encrypted before being transmitted over the Internet.
+pageInfo_Privacy_Encrypted2=Encryption makes it difficult for unauthorised people to view information travelling between computers. It is therefore unlikely that anyone read this page as it travelled across the network.
+pageInfo_MixedContent=Connection Partially Encrypted
+pageInfo_MixedContent2=Parts of the page you are viewing were not encrypted before being transmitted over the Internet.
+pageInfo_WeakCipher=Your connection to this web site uses weak encryption and is not private. Other people can view your information or modify the site's behaviour.
+pageInfo_CertificateTransparency_Compliant=This web site complies with the Certificate Transparency policy.
+
+# Token Manager
+password_not_set=(not set) 
+enable_fips=Enable FIPS
+
diff --git a/l10n-en-GB/security/manager/security/certificates/certManager.ftl b/l10n-en-GB/security/manager/security/certificates/certManager.ftl
new file mode 100644
index 0000000000..3945de1f59
--- /dev/null
+++ b/l10n-en-GB/security/manager/security/certificates/certManager.ftl
@@ -0,0 +1,228 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+certmgr-title =
+    .title = Certificate Manager
+
+certmgr-tab-mine =
+    .label = Your Certificates
+
+certmgr-tab-remembered =
+    .label = Authentication Decisions
+
+certmgr-tab-people =
+    .label = People
+
+certmgr-tab-servers =
+    .label = Servers
+
+certmgr-tab-ca =
+    .label = Authorities
+
+certmgr-mine = You have certificates from these organisations that identify you
+certmgr-remembered = These certificates are used to identify you to web sites
+certmgr-people = You have certificates on file that identify these people
+certmgr-server = These entries identify server certificate error exceptions
+certmgr-ca = You have certificates on file that identify these certificate authorities
+
+certmgr-edit-ca-cert2 =
+    .title = Edit CA certificate trust settings
+    .style = min-width: 48em;
+
+certmgr-edit-cert-edit-trust = Edit trust settings:
+
+certmgr-edit-cert-trust-ssl =
+    .label = This certificate can identify web sites.
+
+certmgr-edit-cert-trust-email =
+    .label = This certificate can identify mail users.
+
+certmgr-delete-cert2 =
+    .title = Delete Certificate
+    .style = min-width: 48em; min-height: 24em;
+
+certmgr-cert-host =
+    .label = Host
+
+certmgr-cert-name =
+    .label = Certificate Name
+
+certmgr-cert-server =
+    .label = Server
+
+certmgr-token-name =
+    .label = Security Device
+
+certmgr-begins-label =
+    .label = Begins On
+
+certmgr-expires-label =
+    .label = Expires On
+
+certmgr-email =
+    .label = Email Address
+
+certmgr-serial =
+    .label = Serial Number
+
+certmgr-fingerprint-sha-256 =
+    .label = SHA-256 Fingerprint
+
+certmgr-view =
+    .label = View…
+    .accesskey = V
+
+certmgr-edit =
+    .label = Edit Trust…
+    .accesskey = E
+
+certmgr-export =
+    .label = Export…
+    .accesskey = x
+
+certmgr-delete =
+    .label = Delete…
+    .accesskey = D
+
+certmgr-delete-builtin =
+    .label = Delete or Distrust…
+    .accesskey = D
+
+certmgr-backup =
+    .label = Backup…
+    .accesskey = B
+
+certmgr-backup-all =
+    .label = Backup All…
+    .accesskey = k
+
+certmgr-restore =
+    .label = Import…
+    .accesskey = m
+
+certmgr-add-exception =
+    .label = Add Exception…
+    .accesskey = x
+
+exception-mgr =
+    .title = Add Security Exception
+
+exception-mgr-extra-button =
+    .label = Confirm Security Exception
+    .accesskey = C
+
+exception-mgr-supplemental-warning = Legitimate banks, stores, and other public sites will not ask you to do this.
+
+exception-mgr-cert-location-url =
+    .value = Location:
+
+exception-mgr-cert-location-download =
+    .label = Get Certificate
+    .accesskey = G
+
+exception-mgr-cert-status-view-cert =
+    .label = View…
+    .accesskey = V
+
+exception-mgr-permanent =
+    .label = Permanently store this exception
+    .accesskey = P
+
+pk11-bad-password = The password entered was incorrect.
+pkcs12-decode-err = Failed to decode the file.  Either it is not in PKCS #12 format, has been corrupted, or the password you entered was incorrect.
+pkcs12-unknown-err-restore = Failed to restore the PKCS #12 file for unknown reasons.
+pkcs12-unknown-err-backup = Failed to create the PKCS #12 backup file for unknown reasons.
+pkcs12-unknown-err = The PKCS #12 operation failed for unknown reasons.
+pkcs12-info-no-smartcard-backup = It is not possible to back up certificates from a hardware security device such as a smart card.
+pkcs12-dup-data = The certificate and private key already exist on the security device.
+
+## PKCS#12 file dialogs
+
+choose-p12-backup-file-dialog = File Name to Backup
+file-browse-pkcs12-spec = PKCS12 Files
+choose-p12-restore-file-dialog = Certificate File to Import
+
+## Import certificate(s) file dialog
+
+file-browse-certificate-spec = Certificate Files
+import-ca-certs-prompt = Select File containing CA certificate(s) to import
+import-email-cert-prompt = Select File containing somebody's Email certificate to import
+
+## For editing certificates trust
+
+# Variables:
+#   $certName: the name of certificate
+edit-trust-ca = The certificate "{ $certName }" represents a Certificate Authority.
+
+## For Deleting Certificates
+
+delete-user-cert-title =
+    .title = Delete your Certificates
+delete-user-cert-confirm = Are you sure you want to delete these certificates?
+delete-user-cert-impact = If you delete one of your own certificates, you can no longer use it to identify yourself.
+
+
+delete-ssl-override-title =
+    .title = Delete Server Certificate Exception
+delete-ssl-override-confirm = Are you sure you want to delete this server exception?
+delete-ssl-override-impact = If you delete a server exception, you restore the usual security checks for that server and require it uses a valid certificate.
+
+delete-ca-cert-title =
+    .title = Delete or Distrust CA Certificates
+delete-ca-cert-confirm = You have asked to delete these CA certificates. For built-in certificates all trust will be removed, which has the same effect. Are you sure you want to delete or distrust?
+delete-ca-cert-impact = If you delete or distrust a certificate authority (CA) certificate, this application will no longer trust any certificates issued by that CA.
+
+
+delete-email-cert-title =
+    .title = Delete Email Certificates
+delete-email-cert-confirm = Are you sure you want to delete these people's email certificates?
+delete-email-cert-impact = If you delete a person's email certificate, you will no longer be able to send encrypted email to that person.
+
+# Used for semi-uniquely representing a cert.
+#
+# Variables:
+#   $serialNumber : the serial number of the cert in AA:BB:CC hex format.
+cert-with-serial =
+    .value = Certificate with serial number: { $serialNumber }
+
+# Used to indicate that the user chose not to send a client authentication certificate to a server that requested one in a TLS handshake.
+send-no-client-certificate = Send no client certificate
+
+# Used when no cert is stored for an override
+no-cert-stored-for-override = (Not Stored)
+
+# When a certificate is unavailable (for example, it has been deleted or the token it exists on has been removed).
+certificate-not-available = (Unavailable)
+
+## Used to show whether an override is temporary or permanent
+
+permanent-override = Permanent
+temporary-override = Temporary
+
+## Add Security Exception dialog
+
+add-exception-branded-warning = You are about to override how { -brand-short-name } identifies this site.
+add-exception-invalid-header = This site attempts to identify itself with invalid information.
+add-exception-domain-mismatch-short = Wrong Site
+add-exception-domain-mismatch-long = The certificate belongs to a different site, which could mean that someone is trying to impersonate this site.
+add-exception-expired-short = Outdated Information
+add-exception-expired-long = The certificate is not currently valid. It may have been stolen or lost, and could be used by someone to impersonate this site.
+add-exception-unverified-or-bad-signature-short = Unknown Identity
+add-exception-unverified-or-bad-signature-long = The certificate is not trusted because it hasn't been verified as issued by a trusted authority using a secure signature.
+add-exception-valid-short = Valid Certificate
+add-exception-valid-long = This site provides valid, verified identification.  There is no need to add an exception.
+add-exception-checking-short = Checking Information
+add-exception-checking-long = Attempting to identify this site…
+add-exception-no-cert-short = No Information Available
+add-exception-no-cert-long = Unable to obtain identification status for this site.
+
+## Certificate export "Save as" and error dialogs
+
+save-cert-as = Save Certificate To File
+cert-format-base64 = X.509 Certificate (PEM)
+cert-format-base64-chain = X.509 Certificate with chain (PEM)
+cert-format-der = X.509 Certificate (DER)
+cert-format-pkcs7 = X.509 Certificate (PKCS#7)
+cert-format-pkcs7-chain = X.509 Certificate with chain (PKCS#7)
+write-file-failure = File Error
diff --git a/l10n-en-GB/security/manager/security/certificates/deviceManager.ftl b/l10n-en-GB/security/manager/security/certificates/deviceManager.ftl
new file mode 100644
index 0000000000..a464fa2a58
--- /dev/null
+++ b/l10n-en-GB/security/manager/security/certificates/deviceManager.ftl
@@ -0,0 +1,133 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+## Strings used for device manager
+
+devmgr-window =
+    .title = Device Manager
+    .style = min-width: 67em; min-height: 32em;
+
+devmgr-devlist =
+    .label = Security Modules and Devices
+
+devmgr-header-details =
+    .label = Details
+
+devmgr-header-value =
+    .label = Value
+
+devmgr-button-login =
+    .label = Log In
+    .accesskey = n
+
+devmgr-button-logout =
+    .label = Log Out
+    .accesskey = O
+
+devmgr-button-changepw =
+    .label = Change Password
+    .accesskey = P
+
+devmgr-button-load =
+    .label = Load
+    .accesskey = L
+
+devmgr-button-unload =
+    .label = Unload
+    .accesskey = U
+
+devmgr-button-enable-fips =
+    .label = Enable FIPS
+    .accesskey = F
+
+devmgr-button-disable-fips =
+    .label = Disable FIPS
+    .accesskey = F
+
+## Strings used for load device
+
+load-device =
+    .title = Load PKCS#11 Device Driver
+
+load-device-info = Enter the information for the module you want to add.
+
+load-device-modname =
+    .value = Module Name
+    .accesskey = M
+
+load-device-modname-default =
+    .value = New PKCS#11 Module
+
+load-device-filename =
+    .value = Module filename
+    .accesskey = f
+
+load-device-browse =
+    .label = Browse…
+    .accesskey = B
+
+## Token Manager
+
+devinfo-status =
+    .label = Status
+
+devinfo-status-disabled =
+    .label = Disabled
+
+devinfo-status-not-present =
+    .label = Not Present
+
+devinfo-status-uninitialized =
+    .label = Uninitialised
+
+devinfo-status-not-logged-in =
+    .label = Not Logged In
+
+devinfo-status-logged-in =
+    .label = Logged In
+
+devinfo-status-ready =
+    .label = Ready
+
+devinfo-desc =
+    .label = Description
+
+devinfo-man-id =
+    .label = Manufacturer
+
+devinfo-hwversion =
+    .label = HW Version
+devinfo-fwversion =
+    .label = FW Version
+
+devinfo-modname =
+    .label = Module
+
+devinfo-modpath =
+    .label = Path
+
+login-failed = Failed to Login
+
+devinfo-label =
+    .label = Label
+
+devinfo-serialnum =
+    .label = Serial Number
+
+fips-nonempty-primary-password-required = FIPS mode requires that you have a Primary Password set for each security device. Please set the password before trying to enable FIPS mode.
+unable-to-toggle-fips = Unable to change the FIPS mode for the security device. It is recommended that you exit and restart this application.
+load-pk11-module-file-picker-title = Choose a PKCS#11 device driver to load
+
+# Load Module Dialog
+load-module-help-empty-module-name =
+    .value = The module name cannot be empty.
+
+# Do not translate 'Root Certs'
+load-module-help-root-certs-module-name =
+    .value = ‘Root Certs‘ is reserved and cannot be used as the module name.
+
+add-module-failure = Unable to add module
+del-module-warning = Are you sure you want to delete this security module?
+del-module-error = Unable to delete module
diff --git a/l10n-en-GB/security/manager/security/pippki/pippki.ftl b/l10n-en-GB/security/manager/security/pippki/pippki.ftl
new file mode 100644
index 0000000000..8170d7dbf7
--- /dev/null
+++ b/l10n-en-GB/security/manager/security/pippki/pippki.ftl
@@ -0,0 +1,106 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+password-quality-meter = Password quality meter
+
+## Change Password dialog
+
+change-device-password-window =
+    .title = Change Password
+# Variables:
+# $tokenName (String) - Security device of the change password dialog
+change-password-token = Security Device: { $tokenName }
+change-password-old = Current password:
+change-password-new = New password:
+change-password-reenter = New password (again):
+pippki-failed-pw-change = Unable to change password.
+pippki-incorrect-pw = You did not enter the correct current password. Please try again.
+pippki-pw-change-ok = Password successfully changed.
+pippki-pw-empty-warning = Your stored passwords and private keys will not be protected.
+pippki-pw-erased-ok = You have deleted your password. { pippki-pw-empty-warning }
+pippki-pw-not-wanted = Warning! You have decided not to use a password. { pippki-pw-empty-warning }
+pippki-pw-change2empty-in-fips-mode = You are currently in FIPS mode. FIPS requires a non-empty password.
+
+## Reset Primary Password dialog
+
+reset-primary-password-window2 =
+    .title = Reset Primary Password
+    .style = min-width: 40em
+reset-password-button-label =
+    .label = Reset
+reset-primary-password-text = If you reset your Primary Password, all your stored web and e-mail passwords, personal certificates, and private keys will be forgotten. Are you sure you want to reset your Primary Password?
+pippki-reset-password-confirmation-title = Reset Primary Password
+pippki-reset-password-confirmation-message = Your Primary Password has been reset.
+
+## Downloading cert dialog
+
+download-cert-window2 =
+    .title = Downloading Certificate
+    .style = min-width: 46em
+download-cert-message = You have been asked to trust a new Certificate Authority (CA).
+download-cert-trust-ssl =
+    .label = Trust this CA to identify web sites.
+download-cert-trust-email =
+    .label = Trust this CA to identify email users.
+download-cert-message-desc = Before trusting this CA for any purpose, you should examine its certificate and its policy and procedures (if available).
+download-cert-view-cert =
+    .label = View
+download-cert-view-text = Examine CA certificate
+
+## Client Authorization Ask dialog
+
+
+## Client Authentication Ask dialog
+
+client-auth-window =
+    .title = User Identification Request
+client-auth-site-description = This site has requested that you identify yourself with a certificate:
+client-auth-choose-cert = Choose a certificate to present as identification:
+client-auth-send-no-certificate =
+    .label = Don’t send a certificate
+# Variables:
+# $hostname (String) - The domain name of the site requesting the client authentication certificate
+client-auth-site-identification = “{ $hostname }” has requested that you identify yourself with a certificate:
+client-auth-cert-details = Details of selected certificate:
+# Variables:
+# $issuedTo (String) - The subject common name of the currently-selected client authentication certificate
+client-auth-cert-details-issued-to = Issued to: { $issuedTo }
+# Variables:
+# $serialNumber (String) - The serial number of the certificate (hexadecimal of the form "AA:BB:...")
+client-auth-cert-details-serial-number = Serial number: { $serialNumber }
+# Variables:
+# $notBefore (String) - The date before which the certificate is not valid (e.g. Apr 21, 2023, 1:47:53 PM UTC)
+# $notAfter (String) - The date after which the certificate is not valid
+client-auth-cert-details-validity-period = Valid from { $notBefore } to { $notAfter }
+# Variables:
+# $keyUsages (String) - A list of already-localized key usages for which the certificate may be used
+client-auth-cert-details-key-usages = Key Usages: { $keyUsages }
+# Variables:
+# $emailAddresses (String) - A list of email addresses present in the certificate
+client-auth-cert-details-email-addresses = Email addresses: { $emailAddresses }
+# Variables:
+# $issuedBy (String) - The issuer common name of the certificate
+client-auth-cert-details-issued-by = Issued by: { $issuedBy }
+# Variables:
+# $storedOn (String) - The name of the token holding the certificate (for example, "OS Client Cert Token (Modern)")
+client-auth-cert-details-stored-on = Stored on: { $storedOn }
+client-auth-cert-remember-box =
+    .label = Remember this decision
+
+## Set password (p12) dialog
+
+set-password-window =
+    .title = Choose a Certificate Backup Password
+set-password-message = The certificate backup password you set here protects the backup file that you are about to create.  You must set this password to proceed with the backup.
+set-password-backup-pw =
+    .value = Certificate backup password:
+set-password-repeat-backup-pw =
+    .value = Certificate backup password (again):
+set-password-reminder = Important: If you forget your certificate backup password, you will not be able to restore this backup later.  Please record it in a safe location.
+
+## Protected authentication alert
+
+# Variables:
+# $tokenName (String) - The name of the token to authenticate to (for example, "OS Client Cert Token (Modern)")
+protected-auth-alert = Please authenticate to the token “{ $tokenName }”. How to do so depends on the token (for example, using a fingerprint reader or entering a code with a keypad).
diff --git a/l10n-en-GB/toolkit/chrome/alerts/alert.properties b/l10n-en-GB/toolkit/chrome/alerts/alert.properties
new file mode 100644
index 0000000000..af2e432a45
--- /dev/null
+++ b/l10n-en-GB/toolkit/chrome/alerts/alert.properties
@@ -0,0 +1,23 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# LOCALIZATION NOTE(closeButton.title): Used as the close button text for web notifications on OS X.
+# This should ideally match the string that OS X uses for the close button on alert-type
+# notifications. OS X will truncate the value if it's too long.
+closeButton.title = Close
+# LOCALIZATION NOTE(actionButton.label): Used as the button label to provide more actions on OS X notifications. OS X will truncate this if it's too long.
+actionButton.label = …
+# LOCALIZATION NOTE(webActions.disableForOrigin.label): %S is replaced
+# with the hostname origin of the notification.
+webActions.disableForOrigin.label = Disable notifications from %S
+
+# LOCALIZATION NOTE(source.label): Used to show the URL of the site that
+# sent the notification (e.g., "via mozilla.org"). "%1$S" is the source host
+# and port.
+source.label=via %1$S
+webActions.settings.label = Notification settings
+
+# LOCALIZATION NOTE(pauseNotifications.label): %S is replaced with the
+# brandShortName of the application.
+pauseNotifications.label = Pause notifications until %S restarts
diff --git a/l10n-en-GB/toolkit/chrome/autoconfig/autoconfig.properties b/l10n-en-GB/toolkit/chrome/autoconfig/autoconfig.properties
new file mode 100644
index 0000000000..7c5e15ea18
--- /dev/null
+++ b/l10n-en-GB/toolkit/chrome/autoconfig/autoconfig.properties
@@ -0,0 +1,12 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+readConfigTitle = Configuration Error
+readConfigMsg = Failed to read the configuration file. Please contact your system administrator.
+
+autoConfigTitle = AutoConfig Alert
+autoConfigMsg = Netscape.cfg/AutoConfig failed. Please contact your system administrator. \n Error: %S failed:
+
+emailPromptTitle = Email Address
+emailPromptMsg = Enter your email address
diff --git a/l10n-en-GB/toolkit/chrome/global-platform/mac/intl.properties b/l10n-en-GB/toolkit/chrome/global-platform/mac/intl.properties
new file mode 100644
index 0000000000..71265a9ef1
--- /dev/null
+++ b/l10n-en-GB/toolkit/chrome/global-platform/mac/intl.properties
@@ -0,0 +1,7 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# LOCALIZATION NOTE (intl.ellipsis): Use the unicode ellipsis char, \u2026,
+# or use "..." if \u2026 doesn't suit traditions in your locale.
+intl.ellipsis=…
diff --git a/l10n-en-GB/toolkit/chrome/global-platform/mac/platformKeys.properties b/l10n-en-GB/toolkit/chrome/global-platform/mac/platformKeys.properties
new file mode 100644
index 0000000000..d830a29b86
--- /dev/null
+++ b/l10n-en-GB/toolkit/chrome/global-platform/mac/platformKeys.properties
@@ -0,0 +1,33 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# Platform: Mac
+# This file defines the on-screen display names for the various modifier keys
+# and the Return key (VK_RETURN).
+# These are used in XP menus to show keyboard shortcuts.
+
+# The Shift key - open up arrow symbol (ctrl-e)
+VK_SHIFT=⇧
+
+# The Command key - clover leaf symbol (ctrl-q)
+VK_META=⌘
+
+# The Win key - never generated by native key event
+VK_WIN=win
+
+# The Command key - clover leaf symbol (ctrl-q)
+VK_COMMAND_OR_WIN=\u2318
+
+# The Option/Alt key - splitting tracks symbol (ctrl-g)
+VK_ALT=⌥
+
+# The Control key - hat symbol (ctrl-f)
+VK_CONTROL=⌃
+
+# The Return key (on the main keyboard or numpad):
+# "Enter" on Windows/Unix, "Return" on Mac
+VK_RETURN=Return
+
+# The separator character used between modifiers (none on Mac OS)
+MODIFIER_SEPARATOR=
diff --git a/l10n-en-GB/toolkit/chrome/global-platform/unix/intl.properties b/l10n-en-GB/toolkit/chrome/global-platform/unix/intl.properties
new file mode 100644
index 0000000000..71265a9ef1
--- /dev/null
+++ b/l10n-en-GB/toolkit/chrome/global-platform/unix/intl.properties
@@ -0,0 +1,7 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# LOCALIZATION NOTE (intl.ellipsis): Use the unicode ellipsis char, \u2026,
+# or use "..." if \u2026 doesn't suit traditions in your locale.
+intl.ellipsis=…
diff --git a/l10n-en-GB/toolkit/chrome/global-platform/unix/platformKeys.properties b/l10n-en-GB/toolkit/chrome/global-platform/unix/platformKeys.properties
new file mode 100644
index 0000000000..fded02a68e
--- /dev/null
+++ b/l10n-en-GB/toolkit/chrome/global-platform/unix/platformKeys.properties
@@ -0,0 +1,33 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# Platform: Unix
+# This file defines the on-screen display names for the various modifier keys
+# and the Enter key (VK_RETURN).
+# These are used in XP menus to show keyboard shortcuts.
+
+# The Shift key
+VK_SHIFT=Shift
+
+# The Command key
+VK_META=Meta
+
+# The Win key (Super key and Hyper keys are mapped to DOM Win key)
+VK_WIN=Win
+
+# The Super/Hyper key
+VK_COMMAND_OR_WIN=Win
+
+# The Alt key
+VK_ALT=Alt
+
+# The Control key
+VK_CONTROL=Ctrl
+
+# The Enter key (on the main keyboard or numpad):
+# "Enter" on Windows/Unix, "Return" on Mac
+VK_RETURN=Enter
+
+# The separator character used between modifiers
+MODIFIER_SEPARATOR=+
diff --git a/l10n-en-GB/toolkit/chrome/global-platform/win/intl.properties b/l10n-en-GB/toolkit/chrome/global-platform/win/intl.properties
new file mode 100644
index 0000000000..71265a9ef1
--- /dev/null
+++ b/l10n-en-GB/toolkit/chrome/global-platform/win/intl.properties
@@ -0,0 +1,7 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# LOCALIZATION NOTE (intl.ellipsis): Use the unicode ellipsis char, \u2026,
+# or use "..." if \u2026 doesn't suit traditions in your locale.
+intl.ellipsis=…
diff --git a/l10n-en-GB/toolkit/chrome/global-platform/win/platformKeys.properties b/l10n-en-GB/toolkit/chrome/global-platform/win/platformKeys.properties
new file mode 100644
index 0000000000..1df027dccf
--- /dev/null
+++ b/l10n-en-GB/toolkit/chrome/global-platform/win/platformKeys.properties
@@ -0,0 +1,33 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# Platform: Windows
+# This file defines the on-screen display names for the various modifier keys
+# and the Enter key (VK_RETURN).
+# These are used in XP menus to show keyboard shortcuts.
+
+# The Shift key
+VK_SHIFT=Shift
+
+# The Command key
+VK_META=Meta
+
+# The Win key
+VK_WIN=Win
+
+# The Win key
+VK_COMMAND_OR_WIN=Win
+
+# The Alt key
+VK_ALT=Alt
+
+# The Control key
+VK_CONTROL=Ctrl
+
+# The Enter key (on the main keyboard or numpad):
+# "Enter" on Windows/Unix, "Return" on Mac
+VK_RETURN=Enter
+
+# The separator character used between modifiers
+MODIFIER_SEPARATOR=+
diff --git a/l10n-en-GB/toolkit/chrome/global/aboutStudies.properties b/l10n-en-GB/toolkit/chrome/global/aboutStudies.properties
new file mode 100644
index 0000000000..d584c94556
--- /dev/null
+++ b/l10n-en-GB/toolkit/chrome/global/aboutStudies.properties
@@ -0,0 +1,32 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+# LOCALIZATION NOTE (title): keep "Shield" in English. See
+# https://wiki.mozilla.org/Firefox/Shield/Shield_Studies for more information
+title = Shield Studies
+removeButton = Remove
+
+# LOCALIZATION NOTE (activeStudiesList): Title above a list of active studies
+activeStudiesList = Active studies
+# LOCALIZATION NOTE (activeStudiesList): Title above a list of completed studies
+completedStudiesList = Completed studies
+# LOCALIZATION NOTE (activeStatus): Displayed for an active study
+activeStatus = Active
+# LOCALIZATION NOTE (completeStatus): Displayed for a study that is already complete
+completeStatus = Complete
+
+updateButtonWin = Update Options
+updateButtonUnix = Update Preferences
+learnMore = Learn more
+noStudies = You have not participated in any studies.
+disabledList = This is a list of studies that you have participated in. No new studies will run.
+# LOCALIZATION NOTE (enabledList): %S is brandShortName (e.g. Firefox)
+enabledList = What’s this? %S may install and run studies from time to time.
+
+# LOCALIZATION NOTE (preferenceStudyDescription) $1%S will be replaced with the
+# name of a preference (such as "stream.improvesearch.topSiteSearchShortcuts")
+# and $2%S will be replaced with the value of that preference. Both values will
+# be formatted differently than the surrounding text.
+preferenceStudyDescription = This study sets %1$S to %2$S.
diff --git a/l10n-en-GB/toolkit/chrome/global/autocomplete.properties b/l10n-en-GB/toolkit/chrome/global/autocomplete.properties
new file mode 100644
index 0000000000..105e0ff25c
--- /dev/null
+++ b/l10n-en-GB/toolkit/chrome/global/autocomplete.properties
@@ -0,0 +1,9 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# LOCALIZATION NOTE (bookmarkKeywordSearch): This is the title of autocomplete
+# entries that are bookmark keyword searches.  %1$S will be replaced with the
+# domain name of the bookmark, and %2$S will be replaced with the keyword
+# search text that the user is typing.  %2$S will not be empty.
+bookmarkKeywordSearch = %1$S: %2$S
diff --git a/l10n-en-GB/toolkit/chrome/global/browser.properties b/l10n-en-GB/toolkit/chrome/global/browser.properties
new file mode 100644
index 0000000000..1fd8a65de6
--- /dev/null
+++ b/l10n-en-GB/toolkit/chrome/global/browser.properties
@@ -0,0 +1,7 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+formPostSecureToInsecureWarning.title = Security Warning
+formPostSecureToInsecureWarning.message = The information you have entered on this page will be sent over an insecure connection and could be read by a third party.\n\nAre you sure you want to send this information?
+formPostSecureToInsecureWarning.continue = Continue
diff --git a/l10n-en-GB/toolkit/chrome/global/commonDialogs.properties b/l10n-en-GB/toolkit/chrome/global/commonDialogs.properties
new file mode 100644
index 0000000000..8e83e977bc
--- /dev/null
+++ b/l10n-en-GB/toolkit/chrome/global/commonDialogs.properties
@@ -0,0 +1,46 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+Alert=Alert
+Confirm=Confirm
+ConfirmCheck=Confirm
+Prompt=Prompt
+# LOCALIZATION NOTE - %S is brandFullName
+PromptUsernameAndPassword3=Authentication Required - %S
+# LOCALIZATION NOTE - %S is brandFullName
+PromptPassword3=Password Required - %S
+Select=Select
+OK=OK
+Cancel=Cancel
+Yes=&Yes
+No=&No
+Save=&Save
+Revert=&Revert
+DontSave=Do&n’t Save
+ScriptDlgGenericHeading=[JavaScript Application]
+ScriptDlgHeading=The page at %S says:
+ScriptDlgNullPrincipalHeading=This page says:
+ScriptDialogLabel=Prevent this page from creating additional dialogues
+ScriptDialogLabelNullPrincipal=Don’t allow this site to prompt you again
+# LOCALIZATION NOTE (ScriptDialogLabelContentPrincipal):
+# %S is either the domain and port of the site prompting, or the name of
+# an add-on prompting.
+ScriptDialogLabelContentPrincipal=Don’t allow %S to prompt you again
+ScriptDialogPreventTitle=Confirm Dialogue Preference
+# LOCALIZATION NOTE (EnterLoginForRealm3, EnterLoginForProxy3):
+# %1 is an untrusted string provided by a remote server. It could try to
+# take advantage of sentence structure in order to mislead the user (see
+# bug 244273). %1 should be integrated into the translated sentences as
+# little as possible. %2 is the url of the site being accessed.
+EnterLoginForRealm3=%2$S is requesting your username and password. The site says: “%1$S”
+EnterLoginForProxy3=The proxy %2$S is requesting a username and password. The site says: “%1$S”
+EnterUserPasswordFor2=%1$S is requesting your username and password.
+EnterUserPasswordForCrossOrigin2=%1$S is requesting your username and password. WARNING: Your password will not be sent to the web site you are currently visiting!
+EnterPasswordFor=Enter password for %1$S on %2$S
+EnterCredentials=This site is asking you to sign in.
+# %S is the username for which a password is requested.
+EnterPasswordOnlyFor=This site is asking you to sign in as %S.
+# %S is the domain of the site being accessed.
+EnterCredentialsCrossOrigin=This site is asking you to sign in. Warning: Your login information will be shared with %S, not the web site you are currently visiting.
+SignIn=Sign in
diff --git a/l10n-en-GB/toolkit/chrome/global/contentAreaCommands.properties b/l10n-en-GB/toolkit/chrome/global/contentAreaCommands.properties
new file mode 100644
index 0000000000..311df92c30
--- /dev/null
+++ b/l10n-en-GB/toolkit/chrome/global/contentAreaCommands.properties
@@ -0,0 +1,28 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# context menu strings
+
+SaveImageTitle=Save Image
+SaveMediaTitle=Save Media
+SaveVideoTitle=Save Video
+SaveAudioTitle=Save Audio
+SaveLinkTitle=Save As
+WebPageCompleteFilter=Web Page, complete
+WebPageHTMLOnlyFilter=Web Page, HTML only
+WebPageXHTMLOnlyFilter=Web Page, XHTML only
+WebPageSVGOnlyFilter=Web Page, SVG only
+WebPageXMLOnlyFilter=Web Page, XML only
+
+# LOCALIZATION NOTE (UntitledSaveFileName):
+#    This is the default filename used when saving a file if a filename could
+#    not be determined or if a filename was invalid. A period and file
+#    extension may be appended to this string.
+UntitledSaveFileName=Untitled
+
+# LOCALIZATION NOTE (filesFolder):
+#    This is the name of the folder that is created parallel to a HTML file
+#    when it is saved "With Images". The %S section is replaced with the
+#    leaf name of the file being saved (minus extension).
+filesFolder=%S_files
diff --git a/l10n-en-GB/toolkit/chrome/global/dialog.properties b/l10n-en-GB/toolkit/chrome/global/dialog.properties
new file mode 100644
index 0000000000..ce6acb5eff
--- /dev/null
+++ b/l10n-en-GB/toolkit/chrome/global/dialog.properties
@@ -0,0 +1,12 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+button-accept=OK
+button-cancel=Cancel
+button-help=Help
+button-disclosure=More Info
+accesskey-accept=
+accesskey-cancel=
+accesskey-help=H
+accesskey-disclosure=I
diff --git a/l10n-en-GB/toolkit/chrome/global/extensions.properties b/l10n-en-GB/toolkit/chrome/global/extensions.properties
new file mode 100644
index 0000000000..20344758f6
--- /dev/null
+++ b/l10n-en-GB/toolkit/chrome/global/extensions.properties
@@ -0,0 +1,27 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#LOCALIZATION NOTE (uninstall.confirmation.title) %S is the name of the extension which is about to be uninstalled.
+uninstall.confirmation.title = Uninstall %S
+
+#LOCALIZATION NOTE (uninstall.confirmation.message) %S is the name of the extension which is about to be uninstalled.
+uninstall.confirmation.message = The extension “%S” is requesting to be uninstalled. What would you like to do?
+
+uninstall.confirmation.button-0.label = Uninstall
+uninstall.confirmation.button-1.label = Keep Installed
+
+saveaspdf.saveasdialog.title = Save As
+
+#LOCALIZATION NOTE (newTabControlled.message2) %S is the icon and name of the extension which updated the New Tab page.
+newTabControlled.message2 = An extension, %S, changed the page you see when you open a new tab.
+newTabControlled.learnMore = Learn more
+
+#LOCALIZATION NOTE (homepageControlled.message) %S is the icon and name of the extension which updated the homepage.
+homepageControlled.message = An extension, %S, changed what you see when you open your homepage and new windows.
+homepageControlled.learnMore = Learn more
+
+#LOCALIZATION NOTE (tabHideControlled.message) %1$S is the icon and name of the extension which hid tabs, %2$S is the icon of the all tabs button.
+tabHideControlled.message = An extension, %1$S, is hiding some of your tabs. You can still access all of your tabs from %2$S.
+tabHideControlled.learnMore = Learn more
+
diff --git a/l10n-en-GB/toolkit/chrome/global/fallbackMenubar.properties b/l10n-en-GB/toolkit/chrome/global/fallbackMenubar.properties
new file mode 100644
index 0000000000..9765689ec2
--- /dev/null
+++ b/l10n-en-GB/toolkit/chrome/global/fallbackMenubar.properties
@@ -0,0 +1,8 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# OSX only. Default menu label when there is no xul menubar.
+
+quitMenuitem.label=Quit
+quitMenuitem.key=q
diff --git a/l10n-en-GB/toolkit/chrome/global/filepicker.properties b/l10n-en-GB/toolkit/chrome/global/filepicker.properties
new file mode 100644
index 0000000000..184573b992
--- /dev/null
+++ b/l10n-en-GB/toolkit/chrome/global/filepicker.properties
@@ -0,0 +1,20 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# LOCALIZATION NOTE: The extensions to which these descriptions refer
+#                    now live in toolkit/content/filepicker.properties
+allTitle=All Files
+htmlTitle=HTML Files
+textTitle=Text Files
+imageTitle=Image Files
+xmlTitle=XML Files
+xulTitle=XUL Files
+appsTitle=Applications
+audioTitle=Audio Files
+videoTitle=Video Files
+
+pdfTitle=PDF Files
+
+formatLabel=Format:
+selectedFileNotReadableError=Selected file does not have read permission
diff --git a/l10n-en-GB/toolkit/chrome/global/intl.css b/l10n-en-GB/toolkit/chrome/global/intl.css
new file mode 100644
index 0000000000..2f54eb367d
--- /dev/null
+++ b/l10n-en-GB/toolkit/chrome/global/intl.css
@@ -0,0 +1,11 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/*
+ * This file contains all localizable skin settings such as 
+ *   font, layout, and geometry
+ */
+window { 
+  font: 3mm tahoma,arial,helvetica,sans-serif;
+}
diff --git a/l10n-en-GB/toolkit/chrome/global/intl.properties b/l10n-en-GB/toolkit/chrome/global/intl.properties
new file mode 100644
index 0000000000..8973ff95c4
--- /dev/null
+++ b/l10n-en-GB/toolkit/chrome/global/intl.properties
@@ -0,0 +1,43 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# LOCALIZATION NOTE (intl.accept_languages):
+# This is a comma-separated list of valid BCP 47 language tags.
+#
+# Begin with the value of 'general.useragent.locale'. Next, include language
+# tags for other languages that you expect most users of your locale to be
+# able to speak, so that their browsing experience degrades gracefully if
+# content is not available in their primary language.
+#
+# It is recommended that you include "en-US, en" at the end of the list as a
+# last resort. However, if you know that users of your locale would prefer a
+# different variety of English, or if they are not likely to understand
+# English at all, you may opt to include a different English language tag, or
+# to exclude English altogether.
+#
+# For example, the Breton [br] locale might consider including French and
+# British English in their list, since those languages are commonly spoken in
+# the same area as Breton:
+# intl.accept_languages=br, fr-FR, fr, en-GB, en
+intl.accept_languages=en-GB, en
+
+# LOCALIZATION NOTE (font.language.group):
+# This preference controls the initial setting of the language drop-down menu
+# in the Content > Fonts & Colors > Advanced preference panel.
+#
+# Set it to the value of one of the menuitems in the "selectLangs" menulist in
+# http://mxr.mozilla.org/mozilla/source/browser/components/preferences/fonts.xul
+font.language.group=x-western
+
+# LOCALIZATION NOTE (pluralRule): Pick the appropriate plural rule for your
+# language. This will determine how many plural forms of a word you will need
+# to provide and in what order.
+# See: http://developer.mozilla.org/en/docs/Localization_and_Plurals
+pluralRule=1
+
+# LOCALIZATION NOTE (intl.menuitems.alwaysappendaccesskeys, intl.menuitems.insertseparatorbeforeaccesskeys):
+# Valid values are: true, false, <empty string>
+# Missing preference or empty value equals false.
+intl.menuitems.alwaysappendaccesskeys=
+intl.menuitems.insertseparatorbeforeaccesskeys=true
diff --git a/l10n-en-GB/toolkit/chrome/global/keys.properties b/l10n-en-GB/toolkit/chrome/global/keys.properties
new file mode 100644
index 0000000000..92d5b916d8
--- /dev/null
+++ b/l10n-en-GB/toolkit/chrome/global/keys.properties
@@ -0,0 +1,78 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# LOCALIZATION NOTE : FILE This file contains the application's labels for keys on the keyboard.
+#                     If you decide to translate this file, you should translate it based on
+#                     the prevelant kind of keyboard for your target user.
+# LOCALIZATION NOTE : There are two types of keys, those w/ text on their labels
+#                     and those w/ glyphs.
+# LOCALIZATION NOTE : VK_<…> represents a key on the keyboard.
+#
+# For more information please see bugzilla bug 90888.
+
+# LOCALIZATION NOTE : FILE This file contains the application's labels for keys on the keyboard.
+#                     If you decide to translate this file, you should translate it based on
+#                     the prevalent kind of keyboard for your target user.
+# LOCALIZATION NOTE : There are two types of keys, those w/ text on their labels
+#                     and those w/ glyphs.
+# LOCALIZATION NOTE : VK_<…> represents a key on the keyboard.
+#
+# For more information please see bugzilla bug 90888.
+
+# F1..F10 should probably not be translated unless there are keyboards that actually have other labels
+# F11..F20 might be something else, but are really keyboard specific and not region/language specific
+# there are actually two different F11/F12 keys, I don't know which one these labels represent.
+# eg, F13..F20 on a sparc keyboard are labeled Props, Again .. Find, Cut
+# sparc also has Stop, Again and F11/F12. VK_F11/VK_F12 probably map to Stop/Again
+# LOCALIZATION NOTE : BLOCK Do not translate the next block
+VK_F1=F1
+VK_F2=F2
+VK_F3=F3
+VK_F4=F4
+VK_F5=F5
+VK_F6=F6
+VK_F7=F7
+VK_F8=F8
+VK_F9=F9
+VK_F10=F10
+
+VK_F11=F11
+VK_F12=F12
+VK_F13=F13
+VK_F14=F14
+VK_F15=F15
+VK_F16=F16
+VK_F17=F17
+VK_F18=F18
+VK_F19=F19
+VK_F20=F20
+# LOCALIZATION NOTE : BLOCK end do not translate block
+
+# LOCALIZATION NOTE : BLOCK GLYPHS, DO translate this block
+VK_UP=Up Arrow
+VK_DOWN=Down Arrow
+VK_LEFT=Left Arrow
+VK_RIGHT=Right Arrow
+VK_PAGE_UP=Page Up
+VK_PAGE_DOWN=Page Down
+# LOCALIZATION NOTE : BLOCK end GLYPHS
+
+# Enter, backspace, and Tab might have both glyphs and text
+# if the keyboards usually have a glyph,
+# if there is a meaningful translation,
+# or if keyboards are localized
+# then translate them or insert the appropriate glyph
+# otherwise you should probably just translate the glyph regions
+
+VK_TAB=Tab
+VK_BACK=Backspace
+VK_DELETE=Delete
+# LOCALIZATION NOTE : BLOCK end maybe GLYPHS
+# LOCALIZATION NOTE : BLOCK typing state keys
+VK_HOME=Home
+VK_END=End
+
+VK_ESCAPE=Esc
+VK_INSERT=Insert
+# LOCALIZATION NOTE : BLOCK end
diff --git a/l10n-en-GB/toolkit/chrome/global/narrate.properties b/l10n-en-GB/toolkit/chrome/global/narrate.properties
new file mode 100644
index 0000000000..06d134b4d5
--- /dev/null
+++ b/l10n-en-GB/toolkit/chrome/global/narrate.properties
@@ -0,0 +1,25 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# "Listen, which allows users to listen to Firefox reading the text,
+# instead of having to read it themselves." This is the name
+# of the feature and it is the label for the popup button.
+# %S is the keyboard shortcut for the listen command
+listen-label = Listen (%S)
+back = Backwards
+# %S is the keyboard shortcut for the start command
+start-label = Start (%S)
+# %S is the keyboard shortcut for the stop command
+stop-label = Stop (%S)
+# Keyboard shortcut to toggle the narrate feature
+narrate-key-shortcut = N
+forward = Forwards
+speed = Speed
+selectvoicelabel = Voice:
+# Default voice is determined by the language of the document.
+defaultvoice = Default
+
+# Voice name and language.
+# eg. David (English)
+voiceLabel = %S (%S)
diff --git a/l10n-en-GB/toolkit/chrome/global/printdialog.properties b/l10n-en-GB/toolkit/chrome/global/printdialog.properties
new file mode 100644
index 0000000000..1ac671b037
--- /dev/null
+++ b/l10n-en-GB/toolkit/chrome/global/printdialog.properties
@@ -0,0 +1,53 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# These strings are used in the native GTK, Mac and Windows print dialogs.
+
+# GTK titles:
+printTitleGTK=Print
+optionsTabLabelGTK=Options
+
+# Mac titles:
+optionsTitleMac=Options:
+appearanceTitleMac=Appearance:
+pageHeadersTitleMac=Page Headers:
+pageFootersTitleMac=Page Footers:
+
+# Windows titles:
+optionsTitleWindows=Options
+
+# TRANSLATOR NOTE: For radio button labels and check button labels, an underscore _
+# before a character will turn that character into an accesskey in the GTK dialog.
+# e.g. "_As laid out" will make A the accesskey.
+# In the Windows labels, use an ampersand (&).
+# On Mac, underscores will be stripped.
+
+shrinkToFit=Ignore Scaling and S_hrink To Fit Page Width
+selectionOnly=Print Selection _Only
+printBGOptions=Print Backgrounds
+printBGColors=Print Background _Colours
+printBGImages=Print Background I_mages
+headerFooter=Header and Footer
+left=Left
+center=Centre
+right=Right
+headerFooterBlank=--blank--
+headerFooterTitle=Title
+headerFooterURL=URL
+headerFooterDate=Date/Time
+headerFooterPage=Page #
+headerFooterPageTotal=Page # of #
+headerFooterCustom=Custom…
+customHeaderFooterPrompt=Please enter your custom header/footer text
+
+# These are for the summary view in the Mac dialog:
+summarySelectionOnlyTitle=Print Selection
+summaryShrinkToFitTitle=Shrink To Fit
+summaryPrintBGColorsTitle=Print BG Colours
+summaryPrintBGImagesTitle=Print BG Images
+summaryHeaderTitle=Page Headers
+summaryFooterTitle=Page Footers
+summaryNAValue=N/A
+summaryOnValue=On
+summaryOffValue=Off
diff --git a/l10n-en-GB/toolkit/chrome/global/resetProfile.properties b/l10n-en-GB/toolkit/chrome/global/resetProfile.properties
new file mode 100644
index 0000000000..c060072990
--- /dev/null
+++ b/l10n-en-GB/toolkit/chrome/global/resetProfile.properties
@@ -0,0 +1,14 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# LOCALIZATION NOTE: These strings are used for profile reset.
+
+# LOCALIZATION NOTE (resetUnusedProfile.message): %S is brandShortName.
+resetUnusedProfile.message=It looks like you haven’t started %S in a while. Do you want to clean it up for a fresh, like-new experience? And by the way, welcome back!
+# LOCALIZATION NOTE (resetUninstalled.message): %S is brandShortName.
+resetUninstalled.message=Looks like you’ve reinstalled %S. Want us to clean it up for a fresh, like-new experience?
+
+# LOCALIZATION NOTE (refreshProfile.resetButton.label): %S is brandShortName.
+refreshProfile.resetButton.label=Refresh %S…
+refreshProfile.resetButton.accesskey=e
diff --git a/l10n-en-GB/toolkit/chrome/global/viewSource.properties b/l10n-en-GB/toolkit/chrome/global/viewSource.properties
new file mode 100644
index 0000000000..93ed26b640
--- /dev/null
+++ b/l10n-en-GB/toolkit/chrome/global/viewSource.properties
@@ -0,0 +1,16 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+goToLineTitle     = Go to line
+goToLineText      = Enter line number
+invalidInputTitle = Invalid input
+invalidInputText  = The line number entered is invalid.
+outOfRangeTitle   = Line not found
+outOfRangeText    = The specified line was not found.
+viewSelectionSourceTitle = DOM Source of Selection
+
+context_goToLine_label        = Go to Line…
+context_goToLine_accesskey    = L
+context_wrapLongLines_label   = Wrap Long Lines
+context_highlightSyntax_label = Syntax Highlighting
diff --git a/l10n-en-GB/toolkit/chrome/global/wizard.properties b/l10n-en-GB/toolkit/chrome/global/wizard.properties
new file mode 100644
index 0000000000..99cc332e7e
--- /dev/null
+++ b/l10n-en-GB/toolkit/chrome/global/wizard.properties
@@ -0,0 +1,8 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+default-first-title=Welcome to the %S
+default-last-title=Completing the %S
+default-first-title-mac=Introduction
+default-last-title-mac=Conclusion
diff --git a/l10n-en-GB/toolkit/chrome/mozapps/downloads/downloads.properties b/l10n-en-GB/toolkit/chrome/mozapps/downloads/downloads.properties
new file mode 100644
index 0000000000..9836b0a0a0
--- /dev/null
+++ b/l10n-en-GB/toolkit/chrome/mozapps/downloads/downloads.properties
@@ -0,0 +1,6 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# Desktop folder name for downloaded files
+downloadsFolder=Downloads
diff --git a/l10n-en-GB/toolkit/chrome/mozapps/downloads/unknownContentType.properties b/l10n-en-GB/toolkit/chrome/mozapps/downloads/unknownContentType.properties
new file mode 100644
index 0000000000..fa3c5e389b
--- /dev/null
+++ b/l10n-en-GB/toolkit/chrome/mozapps/downloads/unknownContentType.properties
@@ -0,0 +1,23 @@
+# -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+title=Opening %S
+saveDialogTitle=Enter name of file to save to…
+defaultApp=%S (default)
+chooseAppFilePickerTitle=Choose Helper Application
+badApp=The application you chose (“%S”) could not be found.  Check the file name or choose another application.
+badApp.title=Application not found
+badPermissions=The file could not be saved because you do not have the proper permissions.  Choose another save directory.
+badPermissions.title=Invalid Save Permissions
+unknownAccept.label=Save File
+unknownCancel.label=Cancel
+fileType=%S file
+# LOCALIZATION NOTE (orderedFileSizeWithType): first %S is type, second %S is size, and third %S is unit
+orderedFileSizeWithType=%1$S (%2$S %3$S)
+avifExtHandlerDescription=AV1 Image File (AVIF)
+pdfExtHandlerDescription=Portable Document Format (PDF)
+svgExtHandlerDescription=Scalable Vector Graphics (SVG)
+webpExtHandlerDescription=WebP Image
+xmlExtHandlerDescription=Extensible Markup Language (XML)
diff --git a/l10n-en-GB/toolkit/chrome/mozapps/profile/profileSelection.properties b/l10n-en-GB/toolkit/chrome/mozapps/profile/profileSelection.properties
new file mode 100644
index 0000000000..dbd3041cfb
--- /dev/null
+++ b/l10n-en-GB/toolkit/chrome/mozapps/profile/profileSelection.properties
@@ -0,0 +1,55 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# LOCALIZATION NOTE: These strings are used for startup/profile problems and the profile manager.
+
+# Application not responding
+# LOCALIZATION NOTE (restartTitle, restartMessageNoUnlocker2, restartMessageUnlocker, restartMessageNoUnlockerMac, restartMessageUnlockerMac): Messages displayed when the application is running but is not responding to commands. %S is the application name.
+restartTitle=Close %S
+restartMessageNoUnlocker2=%S is already running, but is not responding. To use %S, you must first close the existing %S process, restart your device, or use a different profile.
+restartMessageUnlocker=%S is already running, but is not responding. The old %S process must be closed to open a new window.
+restartMessageNoUnlockerMac=A copy of %S is already open. Only one copy of %S can be open at a time.
+restartMessageUnlockerMac=A copy of %S is already open. The running copy of %S will quit in order to open this one.
+
+# Profile manager
+# LOCALIZATION NOTE (profileTooltip): First %S is the profile name, second %S is the path to the profile folder.
+profileTooltip=Profile: ‘%S’ — Path: ‘%S’
+
+pleaseSelectTitle=Select Profile
+pleaseSelect=Please select a profile to begin %S, or create a new profile.
+
+renameProfileTitle=Rename Profile
+renameProfilePrompt=Rename the profile “%S” to:
+
+profileNameInvalidTitle=Invalid profile name
+profileNameInvalid=The profile name “%S” is not allowed.
+
+chooseFolder=Choose Profile Folder
+profileNameEmpty=An empty profile name is not allowed.
+invalidChar=The character “%S” is not allowed in profile names. Please choose a different name.
+
+deleteTitle=Delete Profile
+deleteProfileConfirm=Deleting a profile will remove the profile from the list of available profiles and cannot be undone.\nYou may also choose to delete the profile data files, including your settings, certificates and other user-related data. This option will delete the folder “%S” and cannot be undone.\nWould you like to delete the profile data files?
+deleteFiles=Delete Files
+dontDeleteFiles=Don’t Delete Files
+
+profileCreationFailed=Profile couldn’t be created. Probably the chosen folder isn’t writable.
+profileCreationFailedTitle=Profile Creation failed
+profileExists=A profile with this name already exists. Please choose another name.
+profileFinishText=Click Finish to create this new profile.
+profileFinishTextMac=Click Done to create this new profile.
+profileMissing=Your %S profile cannot be loaded. It may be missing or inaccessible.
+profileMissingTitle=Profile Missing
+profileDeletionFailed=Profile couldn’t be deleted as it may be in use.
+profileDeletionFailedTitle=Deletion Failed
+
+# Profile reset
+# LOCALIZATION NOTE (resetBackupDirectory): Directory name for the profile directory backup created during reset. This directory is placed in a location users will see it (ie. their desktop). %S is the application name.
+resetBackupDirectory=Old %S Data
+
+flushFailTitle=Changes not saved
+flushFailMessage=An unexpected error has prevented your changes from being saved.
+# LOCALIZATION NOTE (flushFailRestartButton): $S is brandShortName.
+flushFailRestartButton=Restart %S
+flushFailExitButton=Exit
diff --git a/l10n-en-GB/toolkit/chrome/mozapps/update/updates.properties b/l10n-en-GB/toolkit/chrome/mozapps/update/updates.properties
new file mode 100644
index 0000000000..a3eeb836d2
--- /dev/null
+++ b/l10n-en-GB/toolkit/chrome/mozapps/update/updates.properties
@@ -0,0 +1,45 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# LOCALIZATION NOTE: The 1st %S is brandShortName and 2nd %S is update version
+# where update version from the update xml
+# example: MyApplication 10.0.5
+updateName=%S %S
+
+noThanksButton=No Thanks
+noThanksButton.accesskey=N
+restartLaterButton=Restart Later
+restartLaterButton.accesskey=L
+restartNowButton=Restart %S
+restartNowButton.accesskey=R
+
+statusFailed=Install Failed
+
+installSuccess=The Update was successfully installed
+installPending=Install Pending
+patchApplyFailure=The Update could not be installed (patch apply failed)
+elevationFailure=You don’t have the permissions necessary to install this update. Please contact your system administrator.
+
+check_error-200=Update XML file malformed (200)
+check_error-403=Access denied (403)
+check_error-404=Update XML file not found (404)
+check_error-500=Internal server error (500)
+check_error-2152398849=Failed (unknown reason)
+check_error-2152398861=Connection refused
+check_error-2152398862=Connection timed out
+# NS_ERROR_OFFLINE
+check_error-2152398864=Network is offline (go online)
+check_error-2152398867=Port not allowed
+check_error-2152398868=No data was received (please try again)
+check_error-2152398878=Update server not found (check your internet connection)
+check_error-2152398890=Proxy server not found (check your internet connection)
+# NS_ERROR_DOCUMENT_NOT_CACHED
+check_error-2152398918=Network is offline (go online)
+check_error-2152398919=Data transfer was interrupted (please try again)
+check_error-2152398920=Proxy server connection refused
+check_error-2153390069=Server certificate has expired (please adjust your system clock to the correct date and time if it is incorrect)
+check_error-verification_failed=The integrity of the update could not be verified
+check_error-move_failed=Failed to prepare the update for installation
+check_error-update_url_not_available=Update URL not available
+check_error-connection_aborted=Connection aborted
diff --git a/l10n-en-GB/toolkit/chrome/passwordmgr/passwordmgr.properties b/l10n-en-GB/toolkit/chrome/passwordmgr/passwordmgr.properties
new file mode 100644
index 0000000000..1b121e3312
--- /dev/null
+++ b/l10n-en-GB/toolkit/chrome/passwordmgr/passwordmgr.properties
@@ -0,0 +1,79 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+rememberPassword = Use Password Manager to remember this password.
+savePasswordTitle = Confirm
+# LOCALIZATION NOTE (saveLoginMsg2, saveLoginMsgNoUser2):
+# %S is the login's hostname.
+saveLoginMsg2 = Save login for %S?
+saveLoginMsgNoUser2 = Save password for %S?
+saveLoginButtonAllow.label = Save
+saveLoginButtonAllow.accesskey = S
+saveLoginButtonDeny.label = Don’t save
+saveLoginButtonDeny.accesskey = D
+saveLoginButtonNever.label = Never save
+saveLoginButtonNever.accesskey = e
+# LOCALIZATION NOTE (updateLoginMsg3, updateLoginMsgNoUser3):
+# %S is the login's hostname.
+updateLoginMsg3 = Update login for %S?
+updateLoginMsgNoUser3 = Update password for %S?
+updateLoginMsgAddUsername2 = Add username to saved password?
+updateLoginButtonText = Update
+updateLoginButtonAccessKey = U
+updateLoginButtonDeny.label = Don’t update
+updateLoginButtonDeny.accesskey = D
+updateLoginButtonDelete.label = Remove saved login
+updateLoginButtonDelete.accesskey = R
+# LOCALIZATION NOTE (rememberPasswordMsg):
+# 1st string is the username for the login, 2nd is the login's hostname.
+# Note that long usernames may be truncated.
+rememberPasswordMsg = Would you like to remember the password for “%1$S” on %2$S?
+# LOCALIZATION NOTE (rememberPasswordMsgNoUsername):
+# String is the login's hostname.
+rememberPasswordMsgNoUsername = Would you like to remember the password on %S?
+# LOCALIZATION NOTE (noUsernamePlaceholder):
+# This is displayed in place of the username when it is missing.
+noUsernamePlaceholder=No username
+togglePasswordLabel=Show password
+togglePasswordAccessKey2=h
+notNowButtonText = &Not Now
+neverForSiteButtonText = Ne&ver for This Site
+rememberButtonText = &Remember
+passwordChangeTitle = Confirm Password Change
+# LOCALIZATION NOTE (updatePasswordMsg):
+# String is the username for the login.
+updatePasswordMsg = Would you like to update the saved password for “%S”?
+updatePasswordMsgNoUser = Would you like to update the saved password?
+userSelectText2 = Select which login to update:
+loginsDescriptionAll2=Logins for the following sites are stored on your computer
+
+# LOCALIZATION NOTE (useASecurelyGeneratedPassword):
+# Shown in the autocomplete popup to allow filling a generated password into a password field.
+useASecurelyGeneratedPassword=Use a Securely Generated Password
+# LOCALIZATION NOTE (generatedPasswordWillBeSaved):
+# %S will contain the brandShorterName. This informs the user that the generated password will be automatically saved.
+generatedPasswordWillBeSaved=%S will save this password for this web site.
+# LOCALIZATION NOTE (loginHostAge):
+# This is used to show the context menu login items with their age.
+# 1st string is the username for the login, 2nd is the login's age.
+loginHostAge=%1$S (%2$S)
+# LOCALIZATION NOTE (noUsername):
+# String is used on the context menu when a login doesn't have a username.
+noUsername=No username
+# LOCALIZATION NOTE (displaySameOrigin):
+# String is used on the autocomplete row when the login origin is a domain match with the document origin
+displaySameOrigin=From this web site
+
+# LOCALIZATION NOTE (insecureFieldWarningDescription2):
+# %1$S will contain insecureFieldWarningLearnMore and look like a link to indicate that clicking will open a tab with support information.
+insecureFieldWarningDescription2 = This connection is not secure. Logins entered here could be compromised. %1$S
+insecureFieldWarningLearnMore = Learn More
+
+# LOCALIZATION NOTE (viewSavedLogins.label):
+# This label is used in the footer of login autocomplete menus.
+viewSavedLogins.label= View Saved Logins
+
+# LOCALIZATION NOTE (managePasswords.label):
+# This label is used in the footer of login autocomplete menus.
+managePasswords.label= Manage Passwords
diff --git a/l10n-en-GB/toolkit/chrome/places/places.properties b/l10n-en-GB/toolkit/chrome/places/places.properties
new file mode 100644
index 0000000000..5d12936232
--- /dev/null
+++ b/l10n-en-GB/toolkit/chrome/places/places.properties
@@ -0,0 +1,33 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+BookmarksMenuFolderTitle=Bookmarks Menu
+BookmarksToolbarFolderTitle=Bookmarks Toolbar
+OtherBookmarksFolderTitle=Other Bookmarks
+TagsFolderTitle=Tags
+MobileBookmarksFolderTitle=Mobile Bookmarks
+
+OrganizerQueryHistory=History
+OrganizerQueryDownloads=Downloads
+OrganizerQueryAllBookmarks=All Bookmarks
+
+# LOCALIZATION NOTE (dateName):
+# These are used to generate history containers when history is grouped by date
+finduri-AgeInDays-is-0=Today
+finduri-AgeInDays-is-1=Yesterday
+finduri-AgeInDays-is=%S days ago
+finduri-AgeInDays-last-is=Last %S days
+finduri-AgeInDays-isgreater=Older than %S days
+finduri-AgeInMonths-is-0=This month
+finduri-AgeInMonths-isgreater=Older than %S months
+
+# LOCALIZATION NOTE (localFiles):
+# This is used to generate local files container when history is grouped by site
+localhost=(local files)
+
+# LOCALIZATION NOTE
+# The string is used for showing file size of each backup in the "fileRestorePopup" popup
+# %1$S is the file size
+# %2$S is the file size unit
+backupFileSizeText=%1$S %2$S
diff --git a/l10n-en-GB/toolkit/crashreporter/aboutcrashes.ftl b/l10n-en-GB/toolkit/crashreporter/aboutcrashes.ftl
new file mode 100644
index 0000000000..9af0b2dfcb
--- /dev/null
+++ b/l10n-en-GB/toolkit/crashreporter/aboutcrashes.ftl
@@ -0,0 +1,31 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v- 2-0- If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla-org/MPL/2-0/-
+
+
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+crash-reports-title = Crash Reports
+
+submit-all-button-label = Submit All
+delete-button-label = Clear All
+delete-confirm-title = Are you sure?
+delete-unsubmitted-description = This will delete all unsubmitted crash reports and cannot be undone.
+delete-submitted-description = This will remove the list of submitted crash reports but will not delete the submitted data. This cannot be undone.
+
+crashes-unsubmitted-label = Unsubmitted Crash Reports
+id-heading = Report ID
+date-crashed-heading = Date Crashed
+submit-crash-button-label = Submit
+# This text is used to replace the label of the crash submit button
+# if the crash submission fails.
+submit-crash-button-failure-label = Failed
+
+crashes-submitted-label = Submitted Crash Reports
+date-submitted-heading = Date Submitted
+view-crash-button-label = View
+
+no-reports-label = No crash reports have been submitted.
+no-config-label = This application has not been configured to display crash reports. The preference <code>breakpad.reportURL</code> must be set.
diff --git a/l10n-en-GB/toolkit/crashreporter/crashreporter.ini b/l10n-en-GB/toolkit/crashreporter/crashreporter.ini
new file mode 100644
index 0000000000..3aa1595e01
--- /dev/null
+++ b/l10n-en-GB/toolkit/crashreporter/crashreporter.ini
@@ -0,0 +1,57 @@
+; This Source Code Form is subject to the terms of the Mozilla Public
+; License, v. 2.0. If a copy of the MPL was not distributed with this
+; file, You can obtain one at http://mozilla.org/MPL/2.0/.
+; This file is in the UTF-8 encoding
+[Strings]
+; LOCALIZATION NOTE (isRTL):
+; Leave this entry empty unless your language requires right-to-left layout,
+; for example like Arabic, Hebrew, Persian. If your language needs RTL, please
+; use the untranslated English word "yes" as value
+isRTL=
+CrashReporterTitle=Crash Reporter
+; LOCALIZATION NOTE (CrashReporterVendorTitle): %s is replaced with the vendor name.  (i.e. "Mozilla")
+CrashReporterVendorTitle=%s Crash Reporter
+; LOCALIZATION NOTE (CrashReporterErrorText): %s is replaced with another string containing detailed information.
+CrashReporterErrorText=The application had a problem and crashed.\n\nUnfortunately, the crash reporter is unable to submit a report for this crash.\n\nDetails: %s
+; LOCALIZATION NOTE (CrashReporterProductErrorText2): The first %s is replaced with the product name (i.e. "Firefox"), the second is replaced with another string containing detailed information.  These two substitutions can not be reordered!
+CrashReporterProductErrorText2=%s had a problem and crashed.\n\nUnfortunately, the crash reporter is unable to submit a crash report.\n\nDetails: %s
+CrashReporterSorry=We're Sorry
+; LOCALIZATION NOTE (CrashReporterDescriptionText2): The %s is replaced with the product name.
+CrashReporterDescriptionText2=%s had a problem and crashed.\n\nTo help us diagnose and fix the problem, you can send us a crash report.
+CrashReporterDefault=This application is run after a crash to report the problem to the application vendor.  It should not be run directly.
+Details=Details…
+ViewReportTitle=Report Contents
+CommentGrayText=Add a comment (comments are publicly visible)
+ExtraReportInfo=This report also contains technical information about the state of the application when it crashed.
+; LOCALIZATION NOTE (CheckSendReport): The %s is replaced with the vendor name.
+CheckSendReport=Tell %s about this crash so they can fix it
+CheckIncludeURL=Include the address of the page I was on
+CheckAllowEmail=Allow %s to contact me about this report
+EmailGrayText=Enter your email address here
+ReportPreSubmit2=Your crash report will be submitted before you quit or restart.
+ReportDuringSubmit2=Submitting your report…
+ReportSubmitSuccess=Report submitted successfully!
+ReportSubmitFailed=There was a problem submitting your report.
+ReportResubmit=Resending reports that previously failed to send…
+; LOCALIZATION NOTE (Quit2): The %s is replaced with the product name.
+Quit2=Quit %s
+; LOCALIZATION NOTE (Restart): The %s is replaced with the product name.
+Restart=Restart %s
+Ok=OK
+Close=Close
+; LOCALIZATION NOTE (CrashID): The %s is replaced with the Crash ID from the server, which is a string like abc12345-6789-0abc-def1-23456abcdef1
+CrashID=Crash ID: %s
+; LOCALIZATION NOTE (CrashDetailsURL): The %s is replaced with a URL that the user can visit to view the crash details.
+CrashDetailsURL=You can view details of this crash at %s
+ErrorBadArguments=The application passed an invalid argument.
+ErrorExtraFileExists=The application didn't leave an application data file.
+ErrorExtraFileRead=Couldn't read the application data file.
+ErrorExtraFileMove=Couldn't move application data file.
+ErrorDumpFileExists=The application did not leave a crash dump file.
+ErrorDumpFileMove=Couldn't move crash dump.
+ErrorNoProductName=The application did not identify itself.
+ErrorNoServerURL=The application did not specify a crash reporting server.
+ErrorNoSettingsPath=Couldn't find the crash reporter's settings.
+ErrorCreateDumpDir=Couldn't create pending dump directory.
+; LOCALIZATION NOTE (ErrorEndOfLife): The %s is replaced with the product name.
+ErrorEndOfLife=The version of %s you are using is no longer supported. Crash reports are no longer being accepted for this version. Please consider upgrading to a supported version.
diff --git a/l10n-en-GB/toolkit/services/accounts.ftl b/l10n-en-GB/toolkit/services/accounts.ftl
new file mode 100644
index 0000000000..cda566e024
--- /dev/null
+++ b/l10n-en-GB/toolkit/services/accounts.ftl
@@ -0,0 +1,8 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# Variables:
+#   $user (String): the user name (e.g. "Ed")
+#   $system (String): the operating system (e.g. "Android")
+account-client-name = { $user }’s { -brand-short-name } on { $system }
diff --git a/l10n-en-GB/toolkit/toolkit/about/aboutAbout.ftl b/l10n-en-GB/toolkit/toolkit/about/aboutAbout.ftl
new file mode 100644
index 0000000000..ce2a311736
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/about/aboutAbout.ftl
@@ -0,0 +1,9 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+about-about-title = About About
+about-about-note =
+    This is a list of “about” pages for your convenience.<br/>
+    Some of them might be confusing. Some are for diagnostic purposes only.<br/>
+    And some are omitted because they require query strings.
diff --git a/l10n-en-GB/toolkit/toolkit/about/aboutAddons.ftl b/l10n-en-GB/toolkit/toolkit/about/aboutAddons.ftl
new file mode 100644
index 0000000000..1034ab4512
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/about/aboutAddons.ftl
@@ -0,0 +1,498 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+addons-page-title = Add-ons Manager
+search-header =
+    .placeholder = Search addons.mozilla.org
+    .searchbuttonlabel = Search
+
+## Variables
+##   $domain - Domain name where add-ons are available (e.g. addons.mozilla.org)
+
+list-empty-get-extensions-message = Get extensions and themes on <a data-l10n-name="get-extensions">{ $domain }</a>
+list-empty-get-dictionaries-message = Get dictionaries on <a data-l10n-name="get-extensions">{ $domain }</a>
+list-empty-get-language-packs-message = Get language packs on <a data-l10n-name="get-extensions">{ $domain }</a>
+
+##
+
+list-empty-installed =
+    .value = You don’t have any add-ons of this type installed
+list-empty-available-updates =
+    .value = No updates found
+list-empty-recent-updates =
+    .value = You haven’t recently updated any add-ons
+list-empty-find-updates =
+    .label = Check For Updates
+list-empty-button =
+    .label = Learn more about add-ons
+help-button = Add-ons Support
+sidebar-help-button-title =
+    .title = Add-ons Support
+addons-settings-button = { -brand-short-name } Settings
+sidebar-settings-button-title =
+    .title = { -brand-short-name } Settings
+show-unsigned-extensions-button =
+    .label = Some extensions could not be verified
+show-all-extensions-button =
+    .label = Show all extensions
+detail-version =
+    .label = Version
+detail-last-updated =
+    .label = Last Updated
+addon-detail-description-expand = Show more
+addon-detail-description-collapse = Show less
+detail-contributions-description = The developer of this add-on asks that you help support its continued development by making a small contribution.
+detail-contributions-button = Contribute
+    .title = Contribute to the development of this add-on
+    .accesskey = C
+detail-update-type =
+    .value = Automatic Updates
+detail-update-default =
+    .label = Default
+    .tooltiptext = Automatically install updates only if that’s the default
+detail-update-automatic =
+    .label = On
+    .tooltiptext = Automatically install updates
+detail-update-manual =
+    .label = Off
+    .tooltiptext = Don’t automatically install updates
+# Used as a description for the option to allow or block an add-on in private windows.
+detail-private-browsing-label = Run in Private Windows
+# Some add-ons may elect to not run in private windows by setting incognito: not_allowed in the manifest.  This
+# cannot be overridden by the user.
+detail-private-disallowed-label = Not Allowed in Private Windows
+detail-private-disallowed-description2 = This extension does not run while private browsing. <a data-l10n-name="learn-more">Learn more</a>
+# Some special add-ons are privileged, run in private windows automatically, and this permission can't be revoked
+detail-private-required-label = Requires Access to Private Windows
+detail-private-required-description2 = This extension has access to your online activities while private browsing. <a data-l10n-name="learn-more">Learn more</a>
+detail-private-browsing-on =
+    .label = Allow
+    .tooltiptext = Enable in Private Browsing
+detail-private-browsing-off =
+    .label = Don’t Allow
+    .tooltiptext = Disable in Private Browsing
+detail-home =
+    .label = Homepage
+detail-home-value =
+    .value = { detail-home.label }
+detail-repository =
+    .label = Add-on Profile
+detail-repository-value =
+    .value = { detail-repository.label }
+detail-check-for-updates =
+    .label = Check for Updates
+    .accesskey = U
+    .tooltiptext = Check for updates for this add-on
+detail-show-preferences =
+    .label =
+        { PLATFORM() ->
+            [windows] Options
+           *[other] Preferences
+        }
+    .accesskey =
+        { PLATFORM() ->
+            [windows] O
+           *[other] P
+        }
+    .tooltiptext =
+        { PLATFORM() ->
+            [windows] Change this add-on’s options
+           *[other] Change this add-on’s preferences
+        }
+detail-rating =
+    .value = Rating
+addon-restart-now =
+    .label = Restart now
+disabled-unsigned-heading =
+    .value = Some add-ons have been disabled
+disabled-unsigned-description = The following add-ons have not been verified for use in { -brand-short-name }. You can <label data-l10n-name="find-addons">find replacements</label> or ask the developer to get them verified.
+disabled-unsigned-learn-more = Learn more about our efforts to help keep you safe online.
+disabled-unsigned-devinfo = Developers interested in getting their add-ons verified can continue by reading our <label data-l10n-name="learn-more">manual</label>.
+plugin-deprecation-description = Missing something? Some plugins are no longer supported by { -brand-short-name }. <label data-l10n-name="learn-more">Learn More.</label>
+legacy-warning-show-legacy = Show legacy extensions
+legacy-extensions =
+    .value = Legacy Extensions
+legacy-extensions-description = These extensions do not meet current { -brand-short-name } standards so they have been deactivated. <label data-l10n-name="legacy-learn-more">Learn about the changes to add-ons</label>
+private-browsing-description2 =
+    { -brand-short-name } is changing how extensions work in private browsing. Any new extensions you add to
+    { -brand-short-name } won’t run by default in Private Windows. Unless you allow it in settings, the
+    extension won’t work while private browsing, and won’t have access to your online activities
+    there. We’ve made this change to keep your private browsing private.
+    <label data-l10n-name="private-browsing-learn-more">Learn how to manage extension settings</label>
+addon-category-discover = Recommendations
+addon-category-discover-title =
+    .title = Recommendations
+addon-category-extension = Extensions
+addon-category-extension-title =
+    .title = Extensions
+addon-category-theme = Themes
+addon-category-theme-title =
+    .title = Themes
+addon-category-plugin = Plugins
+addon-category-plugin-title =
+    .title = Plugins
+addon-category-dictionary = Dictionaries
+addon-category-dictionary-title =
+    .title = Dictionaries
+addon-category-locale = Languages
+addon-category-locale-title =
+    .title = Languages
+addon-category-available-updates = Available Updates
+addon-category-available-updates-title =
+    .title = Available Updates
+addon-category-recent-updates = Recent Updates
+addon-category-recent-updates-title =
+    .title = Recent Updates
+addon-category-sitepermission = Site Permissions
+addon-category-sitepermission-title =
+    .title = Site Permissions
+# String displayed in about:addons in the Site Permissions section
+# Variables:
+#  $host (string) - DNS host name for which the webextension enables permissions
+addon-sitepermission-host = Site Permissions for { $host }
+
+## These are global warnings
+
+extensions-warning-safe-mode = All add-ons have been disabled by safe mode.
+extensions-warning-check-compatibility = Add-on compatibility checking is disabled. You may have incompatible add-ons.
+extensions-warning-safe-mode2 =
+    .message = All add-ons have been disabled by safe mode.
+extensions-warning-check-compatibility2 =
+    .message = Add-on compatibility checking is disabled. You may have incompatible add-ons.
+extensions-warning-check-compatibility-button = Enable
+    .title = Enable add-on compatibility checking
+extensions-warning-update-security = Add-on update security checking is disabled. You may be compromised by updates.
+extensions-warning-update-security2 =
+    .message = Add-on update security checking is disabled. You may be compromised by updates.
+extensions-warning-update-security-button = Enable
+    .title = Enable add-on update security checking
+extensions-warning-imported-addons2 =
+    .message = Please finalise the installation of extensions that were imported to { -brand-short-name }.
+extensions-warning-imported-addons-button = Install Extensions
+
+## Strings connected to add-on updates
+
+addon-updates-check-for-updates = Check for Updates
+    .accesskey = C
+addon-updates-view-updates = View Recent Updates
+    .accesskey = V
+
+# This menu item is a checkbox that toggles the default global behavior for
+# add-on update checking.
+
+addon-updates-update-addons-automatically = Update Add-ons Automatically
+    .accesskey = A
+
+## Specific add-ons can have custom update checking behaviors ("Manually",
+## "Automatically", "Use default global behavior"). These menu items reset the
+## update checking behavior for all add-ons to the default global behavior
+## (which itself is either "Automatically" or "Manually", controlled by the
+## extensions-updates-update-addons-automatically.label menu item).
+
+addon-updates-reset-updates-to-automatic = Reset All Add-ons to Update Automatically
+    .accesskey = R
+addon-updates-reset-updates-to-manual = Reset All Add-ons to Update Manually
+    .accesskey = R
+
+## Status messages displayed when updating add-ons
+
+addon-updates-updating = Updating add-ons
+addon-updates-installed = Your add-ons have been updated.
+addon-updates-none-found = No updates found
+addon-updates-manual-updates-found = View Available Updates
+
+## Add-on install/debug strings for page options menu
+
+addon-install-from-file = Install Add-on From File…
+    .accesskey = I
+addon-install-from-file-dialog-title = Select add-on to install
+addon-install-from-file-filter-name = Add-ons
+addon-open-about-debugging = Debug Add-ons
+    .accesskey = b
+
+## Extension shortcut management
+
+# This is displayed in the page options menu
+addon-manage-extensions-shortcuts = Manage Extension Shortcuts
+    .accesskey = S
+shortcuts-no-addons = You don’t have any extensions enabled.
+shortcuts-no-commands = The following extensions do not have shortcuts:
+shortcuts-input =
+    .placeholder = Type a shortcut
+shortcuts-browserAction2 = Activate toolbar button
+shortcuts-pageAction = Activate page action
+shortcuts-sidebarAction = Toggle the sidebar
+shortcuts-modifier-mac = Include Ctrl, Alt, or ⌘
+shortcuts-modifier-other = Include Ctrl or Alt
+shortcuts-invalid = Invalid combination
+shortcuts-letter = Type a letter
+shortcuts-system = Can’t override a { -brand-short-name } shortcut
+# String displayed in warning label when there is a duplicate shortcut
+shortcuts-duplicate = Duplicate shortcut
+# String displayed when a keyboard shortcut is already assigned to more than one add-on
+# Variables:
+#   $shortcut (string) - Shortcut string for the add-on
+shortcuts-duplicate-warning-message = { $shortcut } is being used as a shortcut in more than one case. Duplicate shortcuts may cause unexpected behaviour.
+# String displayed when a keyboard shortcut is already assigned to more than one add-on
+# Variables:
+#   $shortcut (string) - Shortcut string for the add-on
+shortcuts-duplicate-warning-message2 =
+    .message = { $shortcut } is being used as a shortcut in more than one case. Duplicate shortcuts may cause unexpected behaviour.
+# String displayed when a keyboard shortcut is already used by another add-on
+# Variables:
+#   $addon (string) - Name of the add-on
+shortcuts-exists = Already in use by { $addon }
+# Variables:
+#   $numberToShow (number) - Number of other elements available to show
+shortcuts-card-expand-button =
+    { $numberToShow ->
+       *[other] Show { $numberToShow } More
+    }
+shortcuts-card-collapse-button = Show Less
+header-back-button =
+    .title = Go back
+
+## Recommended add-ons page
+
+# Explanatory introduction to the list of recommended add-ons. The action word
+# ("recommends") in the final sentence is a link to external documentation.
+discopane-intro =
+    Extensions and themes are like apps for your browser, and they let you
+    protect passwords, download videos, find deals, block annoying ads, change
+    how your browser looks, and much more. These small software programmes are
+    often developed by a third party. Here’s a selection { -brand-product-name }
+    <a data-l10n-name="learn-more-trigger">recommends</a> for exceptional
+    security, performance, and functionality.
+# Notice to make user aware that the recommendations are personalized.
+discopane-notice-recommendations =
+    Some of these recommendations are personalised. They are based on other
+    extensions you’ve installed, profile preferences, and usage statistics.
+# Notice to make user aware that the recommendations are personalized.
+discopane-notice-recommendations2 =
+    .message =
+        Some of these recommendations are personalised. They are based on other
+        extensions you’ve installed, profile preferences, and usage statistics.
+discopane-notice-learn-more = Learn more
+privacy-policy = Privacy Policy
+# Refers to the author of an add-on, shown below the name of the add-on.
+# Variables:
+#   $author (string) - The name of the add-on developer.
+created-by-author = by <a data-l10n-name="author">{ $author }</a>
+# Shows the number of daily users of the add-on.
+# Variables:
+#   $dailyUsers (number) - The number of daily users.
+user-count = Users: { $dailyUsers }
+install-extension-button = Add to { -brand-product-name }
+install-theme-button = Install Theme
+# The label of the button that appears after installing an add-on. Upon click,
+# the detailed add-on view is opened, from where the add-on can be managed.
+manage-addon-button = Manage
+find-more-addons = Find more add-ons
+find-more-themes = Find more themes
+# This is a label for the button to open the "more options" menu, it is only
+# used for screen readers.
+addon-options-button =
+    .aria-label = More Options
+
+## Add-on actions
+
+report-addon-button = Report
+remove-addon-button = Remove
+# The link will always be shown after the other text.
+remove-addon-disabled-button = Can’t Be Removed <a data-l10n-name="link">Why?</a>
+disable-addon-button = Disable
+enable-addon-button = Enable
+# This is used for the toggle on the extension card, it's a checkbox and this
+# is always its label.
+extension-enable-addon-button-label =
+    .aria-label = Enable
+preferences-addon-button =
+    { PLATFORM() ->
+        [windows] Options
+       *[other] Preferences
+    }
+details-addon-button = Details
+release-notes-addon-button = Release Notes
+permissions-addon-button = Permissions
+extension-enabled-heading = Enabled
+extension-disabled-heading = Disabled
+theme-enabled-heading = Enabled
+theme-disabled-heading2 = Saved Themes
+plugin-enabled-heading = Enabled
+plugin-disabled-heading = Disabled
+dictionary-enabled-heading = Enabled
+dictionary-disabled-heading = Disabled
+locale-enabled-heading = Enabled
+locale-disabled-heading = Disabled
+sitepermission-enabled-heading = Enabled
+sitepermission-disabled-heading = Disabled
+always-activate-button = Always Activate
+never-activate-button = Never Activate
+addon-detail-author-label = Author
+addon-detail-version-label = Version
+addon-detail-last-updated-label = Last Updated
+addon-detail-homepage-label = Homepage
+addon-detail-rating-label = Rating
+# Message for add-ons with a staged pending update.
+install-postponed-message = This extension will be updated when { -brand-short-name } restarts.
+# Message for add-ons with a staged pending update.
+install-postponed-message2 =
+    .message = This extension will be updated when { -brand-short-name } restarts.
+install-postponed-button = Update Now
+# The average rating that the add-on has received.
+# Variables:
+#   $rating (number) - A number between 0 and 5. The translation should show at most one digit after the comma.
+five-star-rating =
+    .title = Rated { NUMBER($rating, maximumFractionDigits: 1) } out of 5
+# This string is used to show that an add-on is disabled.
+# Variables:
+#   $name (string) - The name of the add-on
+addon-name-disabled = { $name } (disabled)
+# The number of reviews that an add-on has received on AMO.
+# Variables:
+#   $numberOfReviews (number) - The number of reviews received
+addon-detail-reviews-link =
+    { $numberOfReviews ->
+        [one] { $numberOfReviews } review
+       *[other] { $numberOfReviews } reviews
+    }
+
+## Pending uninstall message bar
+
+# Variables:
+#   $addon (string) - Name of the add-on
+pending-uninstall-description = <span data-l10n-name="addon-name">{ $addon }</span> has been removed.
+# Variables:
+#   $addon (string) - Name of the add-on
+pending-uninstall-description2 =
+    .message = { $addon } has been removed.
+pending-uninstall-undo-button = Undo
+addon-detail-updates-label = Allow automatic updates
+addon-detail-updates-radio-default = Default
+addon-detail-updates-radio-on = On
+addon-detail-updates-radio-off = Off
+addon-detail-update-check-label = Check for Updates
+install-update-button = Update
+# aria-label associated to the updates row to help screen readers to announce the group
+# of input controls being entered.
+addon-detail-group-label-updates =
+    .aria-label = { addon-detail-updates-label }
+# This is the tooltip text for the private browsing badge in about:addons. The
+# badge is the private browsing icon included next to the extension's name.
+addon-badge-private-browsing-allowed2 =
+    .title = Allowed in private windows
+    .aria-label = { addon-badge-private-browsing-allowed2.title }
+addon-detail-private-browsing-help = When allowed, the extension will have access to your online activities while private browsing. <a data-l10n-name="learn-more">Learn more</a>
+addon-detail-private-browsing-allow = Allow
+addon-detail-private-browsing-disallow = Don’t Allow
+# aria-label associated to the private browsing row to help screen readers to announce the group
+# of input controls being entered.
+addon-detail-group-label-private-browsing =
+    .aria-label = { detail-private-browsing-label }
+
+## "sites with restrictions" (internally called "quarantined") are special domains
+## where add-ons are normally blocked for security reasons.
+
+# Used as a description for the option to allow or block an add-on on quarantined domains.
+addon-detail-quarantined-domains-label = Run on sites with restrictions
+# Used as help text part of the quarantined domains UI controls row.
+addon-detail-quarantined-domains-help = When allowed, the extension will have access to sites restricted by { -vendor-short-name }. Allow only if you trust this extension.
+# Used as label and tooltip text on the radio inputs associated to the quarantined domains UI controls.
+addon-detail-quarantined-domains-allow = Allow
+addon-detail-quarantined-domains-disallow = Don’t Allow
+# aria-label associated to the quarantined domains exempt row to help screen readers to announce the group.
+addon-detail-group-label-quarantined-domains =
+    .aria-label = { addon-detail-quarantined-domains-label }
+
+## This is the tooltip text for the recommended badges for an extension in about:addons. The
+## badge is a small icon displayed next to an extension when it is recommended on AMO.
+
+addon-badge-recommended2 =
+    .title = { -brand-product-name } only recommends extensions that meet our standards for security and performance
+    .aria-label = { addon-badge-recommended2.title }
+# We hard code "Mozilla" in the string below because the extensions are built
+# by Mozilla and we don't want forks to display "by Fork".
+addon-badge-line3 =
+    .title = Official extension built by Mozilla. Meets security and performance standards
+    .aria-label = { addon-badge-line3.title }
+addon-badge-verified2 =
+    .title = This extension has been reviewed to meet our standards for security and performance
+    .aria-label = { addon-badge-verified2.title }
+
+##
+
+available-updates-heading = Available Updates
+recent-updates-heading = Recent Updates
+release-notes-loading = Loading…
+release-notes-error = Sorry, but there was an error loading the release notes.
+addon-permissions-empty = This extension doesn’t require any permissions
+addon-permissions-required = Required permissions for core functionality:
+addon-permissions-optional = Optional permissions for added functionality:
+addon-permissions-learnmore = Learn more about permissions
+recommended-extensions-heading = Recommended Extensions
+recommended-themes-heading = Recommended Themes
+# Variables:
+#   $hostname (string) - Host where the permissions are granted
+addon-sitepermissions-required = Grants the following capabilities to <span data-l10n-name="hostname">{ $hostname }</span>:
+# A recommendation for the Firefox Color theme shown at the bottom of the theme
+# list view. The "Firefox Color" name itself should not be translated.
+recommended-theme-1 = Feeling creative? <a data-l10n-name="link">Build your own theme with Firefox Colour.</a>
+
+## Page headings
+
+extension-heading = Manage Your Extensions
+theme-heading = Manage Your Themes
+plugin-heading = Manage Your Plugins
+dictionary-heading = Manage Your Dictionaries
+locale-heading = Manage Your Languages
+updates-heading = Manage Your Updates
+sitepermission-heading = Manage Your Site Permissions
+discover-heading = Personalise Your { -brand-short-name }
+shortcuts-heading = Manage Extension Shortcuts
+default-heading-search-label = Find more add-ons
+addons-heading-search-input =
+    .placeholder = Search addons.mozilla.org
+addon-page-options-button =
+    .title = Tools for all add-ons
+
+## Detail notifications
+## Variables:
+##   $name (string) - Name of the add-on.
+
+# Variables:
+#   $version (string) - Application version.
+details-notification-incompatible = { $name } is incompatible with { -brand-short-name } { $version }.
+# Variables:
+#   $version (string) - Application version.
+details-notification-incompatible2 =
+    .message = { $name } is incompatible with { -brand-short-name } { $version }.
+details-notification-incompatible-link = More Information
+details-notification-unsigned-and-disabled = { $name } could not be verified for use in { -brand-short-name } and has been disabled.
+details-notification-unsigned-and-disabled2 =
+    .message = { $name } could not be verified for use in { -brand-short-name } and has been disabled.
+details-notification-unsigned-and-disabled-link = More Information
+details-notification-unsigned = { $name } could not be verified for use in { -brand-short-name }. Proceed with caution.
+details-notification-unsigned2 =
+    .message = { $name } could not be verified for use in { -brand-short-name }. Proceed with caution.
+details-notification-unsigned-link = More Information
+details-notification-blocked = { $name } has been disabled due to security or stability issues.
+details-notification-blocked2 =
+    .message = { $name } has been disabled due to security or stability issues.
+details-notification-blocked-link = More Information
+details-notification-softblocked = { $name } is known to cause security or stability issues.
+details-notification-softblocked2 =
+    .message = { $name } is known to cause security or stability issues.
+details-notification-softblocked-link = More Information
+details-notification-gmp-pending = { $name } will be installed shortly.
+details-notification-gmp-pending2 =
+    .message = { $name } will be installed shortly.
+
+## Gecko Media Plugins (GMPs)
+
+plugins-gmp-license-info = Licence information
+plugins-gmp-privacy-info = Privacy Information
+plugins-openh264-name = OpenH264 Video Codec provided by Cisco Systems, Inc.
+plugins-openh264-description = This plugin is automatically installed by Mozilla to comply with the WebRTC specification and to enable WebRTC calls with devices that require the H.264 video codec. Visit https://www.openh264.org/ to view the codec source code and learn more about the implementation.
+plugins-widevine-name = Widevine Content Decryption Module provided by Google Inc.
+plugins-widevine-description = This plugin enables playback of encrypted media in compliance with the Encrypted Media Extensions specification. Encrypted media is typically used by sites to protect against copying of premium media content. Visit https://www.w3.org/TR/encrypted-media/ for more information on Encrypted Media Extensions.
diff --git a/l10n-en-GB/toolkit/toolkit/about/aboutCompat.ftl b/l10n-en-GB/toolkit/toolkit/about/aboutCompat.ftl
new file mode 100644
index 0000000000..f91382a89c
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/about/aboutCompat.ftl
@@ -0,0 +1,22 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+label-disable = Disable
+label-enable = Enable
+label-interventions = Interventions
+label-more-information = More Information: Bug { $bug }
+label-overrides = User Agent Overrides
+text-disabled-in-about-config = This feature has been disabled in about:config
+text-no-interventions = No interventions are being used
+text-no-overrides = No UA overrides are being used
+text-title = about:compat
+
+## Do not translate "SmartBlock". For reference, SmartBlock is a feature
+## of Firefox anti-tracking which fixes website breakage caused when
+## trackers are blocked, by acting just enough like those trackers to fix the
+## breakage. SmartBlock also contains special fixes for sites broken by
+## Firefox's Total Cookie Protection feature.
+
+label-smartblock = SmartBlock Fixes
+text-no-smartblock = No SmartBlock fixes are being used
diff --git a/l10n-en-GB/toolkit/toolkit/about/aboutGlean.ftl b/l10n-en-GB/toolkit/toolkit/about/aboutGlean.ftl
new file mode 100644
index 0000000000..0974cf7c6a
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/about/aboutGlean.ftl
@@ -0,0 +1,107 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+### "FOG", "Glean", and "Glean SDK" should remain in English.
+
+-fog-brand-name = FOG
+-glean-brand-name = Glean
+glean-sdk-brand-name = { -glean-brand-name } SDK
+glean-debug-ping-viewer-brand-name = { -glean-brand-name } Debug Ping Viewer
+about-glean-page-title2 = About { -glean-brand-name }
+about-glean-header = About { -glean-brand-name }
+about-glean-interface-description =
+    The <a data-l10n-name="glean-sdk-doc-link">{ glean-sdk-brand-name }</a>
+    is a data collection library used in { -vendor-short-name } projects.
+    This interface is designed to be used by developers and testers to manually
+    <a data-l10n-name="fog-link">test instrumentation</a>.
+about-glean-upload-enabled = Data upload is enabled.
+about-glean-upload-disabled = Data upload is disabled.
+about-glean-upload-enabled-local = Data upload is enabled only for sending to a local server.
+about-glean-upload-fake-enabled =
+    Data upload is disabled,
+    but we’re lying and telling the { glean-sdk-brand-name } it is enabled
+    so that data is still recorded locally.
+    Note: If you set a debug tag, pings will be uploaded to the
+    <a data-l10n-name="glean-debug-ping-viewer">{ glean-debug-ping-viewer-brand-name }</a> regardless of settings.
+# This message is followed by a bulleted list.
+about-glean-prefs-and-defines = Relevant <a data-l10n-name="fog-prefs-and-defines-doc-link">preferences and defines</a> include:
+# Variables:
+#   $data-upload-pref-value (String): the value of the datareporting.healthreport.uploadEnabled pref. Typically "true", sometimes "false"
+# Do not translate strings between <code> </code> tags.
+about-glean-data-upload = <code>datareporting.healthreport.uploadEnabled</code>: { $data-upload-pref-value }
+# Variables:
+#   $local-port-pref-value (Integer): the value of the telemetry.fog.test.localhost_port pref. Typically 0. Can be negative.
+# Do not translate strings between <code> </code> tags.
+about-glean-local-port = <code>telemetry.fog.test.localhost_port</code>: { $local-port-pref-value }
+# Variables:
+#   $glean-android-define-value (Boolean): the value of the MOZ_GLEAN_ANDROID define. Typically "false", sometimes "true".
+# Do not translate strings between <code> </code> tags.
+about-glean-glean-android = <code>MOZ_GLEAN_ANDROID</code>: { $glean-android-define-value }
+# Variables:
+#   $moz-official-define-value (Boolean): the value of the MOZILLA_OFFICIAL define.
+# Do not translate strings between <code> </code> tags.
+about-glean-moz-official = <code>MOZILLA_OFFICIAL</code>: { $moz-official-define-value }
+about-glean-about-testing-header = About Testing
+# This message is followed by a numbered list.
+about-glean-manual-testing =
+    Full instructions are documented in the
+    <a data-l10n-name="fog-instrumentation-test-doc-link">{ -fog-brand-name } instrumentation testing docs</a>
+    and in the <a data-l10n-name="glean-sdk-doc-link">{ glean-sdk-brand-name } documentation</a>,
+    but, in short, to manually test that your instrumentation works, you should:
+# This message is an option in a dropdown filled with untranslated names of pings.
+about-glean-no-ping-label = (don’t submit any ping)
+# An in-line text input field precedes this string.
+about-glean-label-for-tag-pings = In the preceding field ensure there is a memorable debug tag so you can recognise your pings later.
+# An in-line text input field precedes this string.
+about-glean-label-for-tag-pings-with-requirements = Set a memorable debug tag <span>(20 characters or fewer, alphanumerics and - only)</span> so you can recognise your pings later.
+# An in-line drop down list precedes this string.
+# Do not translate strings between <code> </code> tags.
+about-glean-label-for-ping-names =
+    Select from the preceding list the ping your instrumentation is in.
+    If it’s in a <a data-l10n-name="custom-ping-link">custom ping</a>, choose that one.
+    Otherwise, the default for <code>event</code> metrics is
+    the <code>events</code> ping
+    and the default for all other metrics is
+    the <code>metrics</code> ping.
+# An in-line check box precedes this string.
+about-glean-label-for-log-pings =
+    (Optional. Check the preceding box if you want pings to also be logged when they are submitted.
+    You will additionally need to <a data-l10n-name="enable-logging-link">enable logging</a>.)
+# Variables
+#   $debug-tag (String): The user-set value of the debug tag input on this page. Like "about-glean-kV"
+# An in-line button labeled "Apply settings and submit ping" precedes this string.
+about-glean-label-for-controls-submit =
+    Press the preceding button to tag all { -glean-brand-name } pings with your tag and submit the selected ping.
+    (All pings submitted from then until you restart the application will be tagged with
+    <code>{ $debug-tag }</code>.)
+about-glean-li-for-visit-gdpv =
+    <a data-l10n-name="gdpv-tagged-pings-link">Visit the { glean-debug-ping-viewer-brand-name } page for pings with your tag</a>.
+    It shouldn’t take more than a few seconds from pushing the button to your ping arriving.
+    Sometimes it may take a small handful of minutes.
+# Do not translate strings between <code> </code> tags.
+about-glean-adhoc-explanation =
+    For more <i>ad hoc</i> testing,
+    you can also determine the current value of a particular piece of instrumentation
+    by opening a devtools console here on <code>about:glean</code>
+    and using the <code>testGetValue()</code> API like
+    <code>Glean.metricCategory.metricName.testGetValue()</code>.
+# Do not translate strings between <code> </code> tags.
+about-glean-adhoc-explanation2 =
+    For more <i>ad hoc</i> testing,
+    you can also determine the current value of a particular piece of instrumentation
+    by opening a devtools console here on <code>about:glean</code>
+    and using the <code>testGetValue()</code> API like
+    <code>Glean.metricCategory.metricName.testGetValue()</code>
+    for a metric named <code>metric.category.metric_name</code>.
+# Do not translate strings between <code> </code> tags.
+about-glean-adhoc-note =
+    Please note that you are using the Glean JS API by using the devtools console.
+    This means the metric category and metric name are formatted in
+    <code>camelCase</code> unlike in the Rust and C++ APIs.
+controls-button-label-verbose = Apply settings and submit ping
+about-glean-about-data-header = About Data
+about-glean-about-data-explanation =
+    To browse the list of collected data, please consult the
+    <a data-l10n-name="glean-dictionary-link">{ -glean-brand-name } Dictionary</a>.
diff --git a/l10n-en-GB/toolkit/toolkit/about/aboutHttpsOnlyError.ftl b/l10n-en-GB/toolkit/toolkit/about/aboutHttpsOnlyError.ftl
new file mode 100644
index 0000000000..b3761d23c6
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/about/aboutHttpsOnlyError.ftl
@@ -0,0 +1,31 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+about-httpsonly-title-alert = HTTPS-Only Mode Alert
+about-httpsonly-title-site-not-available = Secure Site Not Available
+
+# Variables:
+#   $websiteUrl (String) - Url of the website that failed to load. Example: www.example.com
+about-httpsonly-explanation-unavailable2 = You’ve enabled HTTPS-Only Mode for enhanced security, and a HTTPS version of <em>{ $websiteUrl }</em> is not available.
+about-httpsonly-explanation-question = What could be causing this?
+about-httpsonly-explanation-nosupport = Most likely, the web site simply does not support HTTPS.
+about-httpsonly-explanation-risk = It’s also possible that an attacker is involved. If you decide to visit the web site, you should not enter any sensitive information like passwords, emails, or credit card details.
+about-httpsonly-explanation-continue = If you continue, HTTPS-Only Mode will be turned off temporarily for this site.
+
+about-httpsonly-button-continue-to-site = Continue to HTTP Site
+about-httpsonly-button-go-back = Go Back
+about-httpsonly-link-learn-more = Learn More…
+
+## Suggestion Box that only shows up if a secure connection to www can be established
+## Variables:
+##   $websiteUrl (String) - Url of the website that can be securely loded with these alternatives. Example: example.com
+
+
+## Suggestion Box that only shows up if a secure connection to www can be established
+## Variables:
+##   $websiteUrl (String) - Url of the website that can be securely loaded with these alternatives. Example: example.com
+
+about-httpsonly-suggestion-box-header = Possible Alternative
+about-httpsonly-suggestion-box-www-text = There is a secure version of <em>www.{ $websiteUrl }</em>. You can visit this page instead of <em>{ $websiteUrl }</em>.
+about-httpsonly-suggestion-box-www-button = Go to www.{ $websiteUrl }
diff --git a/l10n-en-GB/toolkit/toolkit/about/aboutLogging.ftl b/l10n-en-GB/toolkit/toolkit/about/aboutLogging.ftl
new file mode 100644
index 0000000000..a1ef858cbc
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/about/aboutLogging.ftl
@@ -0,0 +1,69 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# This is the title of the page
+about-logging-title = About Logging
+about-logging-page-title = Logging manager
+about-logging-current-log-file = Current log file:
+about-logging-new-log-file = New log file:
+about-logging-currently-enabled-log-modules = Currently enabled log modules:
+about-logging-log-tutorial = See <a data-l10n-name="logging">HTTP Logging</a> for instructions on how to use this tool.
+# This message is used as a button label, "Open" indicates an action.
+about-logging-open-log-file-dir = Open directory
+about-logging-set-log-file = Set Log File
+about-logging-set-log-modules = Set Log Modules
+about-logging-start-logging = Start Logging
+about-logging-stop-logging = Stop Logging
+about-logging-buttons-disabled = Logging configured via environment variables, dynamic configuration unavailable.
+about-logging-some-elements-disabled = Logging configured via URL, some configuration options are unavailable
+about-logging-info = Info:
+about-logging-log-modules-selection = Log module selection
+about-logging-new-log-modules = New log modules:
+about-logging-logging-output-selection = Logging output
+about-logging-logging-to-file = Logging to a file
+about-logging-logging-to-profiler = Logging to the { -profiler-brand-name }
+about-logging-no-log-modules = None
+about-logging-no-log-file = None
+about-logging-logging-preset-selector-text = Logging preset:
+about-logging-with-profiler-stacks-checkbox = Enable stack traces for log messages
+
+## Logging presets
+
+about-logging-preset-networking-label = Networking
+about-logging-preset-networking-description = Log modules to diagnose networking issues
+about-logging-preset-networking-cookie-label = Cookies
+about-logging-preset-networking-cookie-description = Log modules to diagnose cookie issues
+about-logging-preset-networking-websocket-label = WebSockets
+about-logging-preset-networking-websocket-description = Log modules to diagnose WebSocket issues
+about-logging-preset-networking-http3-label = HTTP/3
+about-logging-preset-networking-http3-description = Log modules to diagnose HTTP/3 and QUIC issues
+about-logging-preset-networking-http3-upload-speed-label = HTTP/3 upload speed
+about-logging-preset-networking-http3-upload-speed-description = Log modules to diagnose HTTP/3 upload speed issues
+about-logging-preset-media-playback-label = Media playback
+about-logging-preset-media-playback-description = Log modules to diagnose media playback issues (not video-conferencing issues)
+about-logging-preset-webrtc-label = WebRTC
+about-logging-preset-webrtc-description = Log modules to diagnose WebRTC calls
+about-logging-preset-webgpu-label = WebGPU
+about-logging-preset-webgpu-description = Log modules to diagnose WebGPU issues
+about-logging-preset-gfx-label = Graphics
+about-logging-preset-gfx-description = Log modules to diagnose graphics issues
+# This is specifically "Microsoft Windows". Microsoft normally doesn't localize it, and we should follow their convention here.
+about-logging-preset-windows-label = Windows
+about-logging-preset-windows-description = Log modules to diagnose issues specific to Microsoft Windows
+about-logging-preset-custom-label = Custom
+about-logging-preset-custom-description = Log modules manually selected
+# Error handling
+about-logging-error = Error:
+
+## Variables:
+##   $k (String) - Variable name
+##   $v (String) - Variable value
+
+about-logging-invalid-output = Invalid value “{ $v }“ for key “{ $k }“
+about-logging-unknown-logging-preset = Unknown logging preset “{ $v }“
+about-logging-unknown-profiler-preset = Unknown profiler preset “{ $v }“
+about-logging-unknown-option = Unknown about:logging option “{ $k }“
+about-logging-configuration-url-ignored = Configuration URL ignored
+about-logging-file-and-profiler-override = Can’t force file output and override profiler options at the same time
+about-logging-configured-via-url = Option configured via URL
diff --git a/l10n-en-GB/toolkit/toolkit/about/aboutMozilla.ftl b/l10n-en-GB/toolkit/toolkit/about/aboutMozilla.ftl
new file mode 100644
index 0000000000..f0d0f336e5
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/about/aboutMozilla.ftl
@@ -0,0 +1,11 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+about-mozilla-title-6-27 = The Book of Mozilla, 6:27
+about-mozilla-quote-6-27 =
+    The Beast continued its studies with renewed <em>Focus</em>, building great <em>Reference</em>
+    works and contemplating new <em>Realities</em>. The Beast brought forth its followers and
+    acolytes to create a renewed smaller form of itself and, through <em>Mischievous</em> means,
+    sent it out across the world.
+about-mozilla-from-6-27 = from <strong>The Book of Mozilla,</strong> 6:27
diff --git a/l10n-en-GB/toolkit/toolkit/about/aboutNetworking.ftl b/l10n-en-GB/toolkit/toolkit/about/aboutNetworking.ftl
new file mode 100644
index 0000000000..21652876a3
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/about/aboutNetworking.ftl
@@ -0,0 +1,68 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+about-networking-title = About Networking
+about-networking-http = HTTP
+about-networking-sockets = Sockets
+about-networking-dns = DNS
+about-networking-dns-clear-cache-button = Clear DNS Cache
+about-networking-dns-trr-url = DoH URL
+about-networking-dns-trr-mode = DoH Mode
+about-networking-dns-suffix = DNS suffix
+about-networking-websockets = WebSockets
+about-networking-refresh = Refresh
+about-networking-auto-refresh = Autorefresh every 3 seconds
+about-networking-hostname = Hostname
+about-networking-port = Port
+about-networking-http-version = HTTP Version
+about-networking-ssl = SSL
+about-networking-active = Active
+about-networking-idle = Idle
+about-networking-host = Host
+about-networking-type = Type
+about-networking-sent = Sent
+about-networking-received = Received
+about-networking-family = Family
+about-networking-trr = TRR
+about-networking-addresses = Addresses
+about-networking-expires = Expires (Seconds)
+about-networking-originAttributesSuffix = Isolation Key
+about-networking-flags = Extra flags
+about-networking-messages-sent = Messages Sent
+about-networking-messages-received = Messages Received
+about-networking-bytes-sent = Bytes Sent
+about-networking-bytes-received = Bytes Received
+about-networking-logging = Logging
+about-networking-dns-lookup = DNS Lookup
+about-networking-dns-lookup-button = Resolve
+about-networking-dns-domain = Domain:
+about-networking-dns-lookup-table-column = IPs
+about-networking-dns-https-rr-lookup-table-column = HTTP RRs
+about-networking-rcwn = RCWN Stats
+about-networking-rcwn-status = RCWN Status
+about-networking-rcwn-cache-won-count = Cache won count
+about-networking-rcwn-net-won-count = Net won count
+about-networking-total-network-requests = Total network request count
+about-networking-rcwn-operation = Cache Operation
+about-networking-rcwn-perf-open = Open
+about-networking-rcwn-perf-read = Read
+about-networking-rcwn-perf-write = Write
+about-networking-rcwn-perf-entry-open = Entry Open
+about-networking-rcwn-avg-short = Short Average
+about-networking-rcwn-avg-long = Long Average
+about-networking-rcwn-std-dev-long = Long Standard Deviation
+about-networking-rcwn-cache-slow = Cache slow count
+about-networking-rcwn-cache-not-slow = Cache not slow count
+about-networking-networkid = Network ID
+about-networking-networkid-id = Network ID
+# Note: do not translate about:logging, as it is a URL.
+about-networking-moved-about-logging = This page has been moved to <a data-l10n-name="about-logging-url">about:logging</a>.
+
+## Link is intended as "network link"
+
+about-networking-networkid-is-up = Link is up
+about-networking-networkid-status-known = Link status is known
+
+##
+
diff --git a/l10n-en-GB/toolkit/toolkit/about/aboutPerformance.ftl b/l10n-en-GB/toolkit/toolkit/about/aboutPerformance.ftl
new file mode 100644
index 0000000000..3796c106f4
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/about/aboutPerformance.ftl
@@ -0,0 +1,67 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# Page title
+about-performance-title = Task Manager
+
+## Column headers
+
+column-name = Name
+column-type = Type
+column-energy-impact = Energy Impact
+column-memory = Memory
+
+## Special values for the Name column
+
+ghost-windows = Recently closed tabs
+# Variables:
+#   $title (String) - the title of the preloaded page, typically 'New Tab'
+preloaded-tab = Preloaded: { $title }
+
+## Values for the Type column
+
+type-tab = Tab
+type-subframe = Subframe
+type-tracker = Tracker
+type-addon = Add-on
+type-browser = Browser
+type-worker = Worker
+type-other = Other
+
+## Values for the Energy Impact column
+##
+## Variables:
+##   $value (Number) - Value of the energy impact, eg. 0.25 (low),
+##                     5.38 (medium), 105.38 (high)
+
+energy-impact-high = High ({ $value })
+energy-impact-medium = Medium ({ $value })
+energy-impact-low = Low ({ $value })
+
+## Values for the Memory column
+##
+## Variables:
+##   $value (Number) - How much memory is used
+
+size-KB = { $value } kB
+size-MB = { $value } MB
+size-GB = { $value } GB
+
+## Tooltips for the action buttons
+
+close-tab =
+    .title = Close tab
+show-addon =
+    .title = Show in Add-ons Manager
+
+# Tooltip when hovering an item of the about:performance table
+# Variables:
+#   $totalDispatches (Number) - how many dispatches occured for this page since it loaded
+#   $totalDuration (Number) - how much CPU time was used by this page since it loaded
+#   $dispatchesSincePrevious (Number) - how many dispatches occured in the last 2 seconds
+#   $durationSincePrevious (Number) - how much CPU time was used in the last 2 seconds
+item =
+    .title =
+        Dispatches since load: { $totalDispatches } ({ $totalDuration }ms)
+        Dispatches in the last seconds: { $dispatchesSincePrevious } ({ $durationSincePrevious }ms)
diff --git a/l10n-en-GB/toolkit/toolkit/about/aboutPlugins.ftl b/l10n-en-GB/toolkit/toolkit/about/aboutPlugins.ftl
new file mode 100644
index 0000000000..7aeb078a92
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/about/aboutPlugins.ftl
@@ -0,0 +1,43 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+title-label = About Plugins
+installed-plugins-label = Installed plugins
+no-plugins-are-installed-label = No installed plugins found
+deprecation-description = Missing something? Some plugins are no longer supported. <a data-l10n-name="deprecation-link">Learn More.</a>
+deprecation-description2 =
+    .message = Missing something? Some plugins are no longer supported.
+
+## The information of plugins
+##
+## Variables:
+##   $pluginLibraries: the plugin library
+##   $pluginFullPath: path of the plugin
+##   $version: version of the plugin
+
+file-dd = <span data-l10n-name="file">File:</span> { $pluginLibraries }
+path-dd = <span data-l10n-name="path">Path:</span> { $pluginFullPath }
+version-dd = <span data-l10n-name="version">Version:</span> { $version }
+
+## These strings describe the state of plugins
+##
+## Variables:
+##   $blockListState: show some special state of the plugin, such as blocked, outdated
+
+state-dd-enabled = <span data-l10n-name="state">State:</span> Enabled
+state-dd-enabled-block-list-state = <span data-l10n-name="state">State:</span> Enabled ({ $blockListState })
+state-dd-Disabled = <span data-l10n-name="state">State:</span> Disabled
+state-dd-Disabled-block-list-state = <span data-l10n-name="state">State:</span> Disabled ({ $blockListState })
+mime-type-label = MIME Type
+description-label = Description
+suffixes-label = Suffixes
+
+## Gecko Media Plugins (GMPs)
+
+plugins-gmp-license-info = Licence information
+plugins-gmp-privacy-info = Privacy Information
+plugins-openh264-name = OpenH264 Video Codec provided by Cisco Systems, Inc.
+plugins-openh264-description = This plugin is automatically installed by Mozilla to comply with the WebRTC specification and to enable WebRTC calls with devices that require the H.264 video codec. Visit https://www.openh264.org/ to view the codec source code and learn more about the implementation.
+plugins-widevine-name = Widevine Content Decryption Module provided by Google Inc.
+plugins-widevine-description = This plugin enables playback of encrypted media in compliance with the Encrypted Media Extensions specification. Encrypted media is typically used by sites to protect against copying of premium media content. Visit https://www.w3.org/TR/encrypted-media/ for more information on Encrypted Media Extensions.
diff --git a/l10n-en-GB/toolkit/toolkit/about/aboutProcesses.ftl b/l10n-en-GB/toolkit/toolkit/about/aboutProcesses.ftl
new file mode 100644
index 0000000000..19b6bc2d33
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/about/aboutProcesses.ftl
@@ -0,0 +1,189 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# Page title
+about-processes-title = Process Manager
+# The Actions column
+about-processes-column-action =
+    .title = Actions
+
+## Tooltips
+
+about-processes-shutdown-process =
+    .title = Unload tabs and kill process
+about-processes-shutdown-tab =
+    .title = Close tab
+# Profiler icons
+# Variables:
+#    $duration (Number) The time in seconds during which the profiler will be running.
+#                       The value will be an integer, typically less than 10.
+about-processes-profile-process =
+    .title =
+        { $duration ->
+            [one] Profile all threads of this process for { $duration } second
+           *[other] Profile all threads of this process for { $duration } seconds
+        }
+
+## Column headers
+
+about-processes-column-name = Name
+about-processes-column-memory-resident = Memory
+about-processes-column-cpu-total = CPU
+
+## Process names
+## Variables:
+##    $pid (String) The process id of this process, assigned by the OS.
+
+about-processes-browser-process = { -brand-short-name } ({ $pid })
+about-processes-web-process = Shared Web Process ({ $pid })
+about-processes-file-process = Files ({ $pid })
+about-processes-extension-process = Extensions ({ $pid })
+about-processes-privilegedabout-process = About pages ({ $pid })
+about-processes-plugin-process = Plugins ({ $pid })
+about-processes-privilegedmozilla-process = { -vendor-short-name } sites ({ $pid })
+about-processes-gmp-plugin-process = Gecko Media Plugins ({ $pid })
+about-processes-gpu-process = GPU ({ $pid })
+about-processes-vr-process = VR ({ $pid })
+about-processes-rdd-process = Data Decoder ({ $pid })
+about-processes-socket-process = Network ({ $pid })
+about-processes-remote-sandbox-broker-process = Remote Sandbox Broker ({ $pid })
+about-processes-fork-server-process = Fork Server ({ $pid })
+about-processes-preallocated-process = Preallocated ({ $pid })
+about-processes-utility-process = Utility ({ $pid })
+# Unknown process names
+# Variables:
+#    $pid (String) The process id of this process, assigned by the OS.
+#    $type (String) The raw type for this process.
+about-processes-unknown-process = Other: { $type } ({ $pid })
+
+## Isolated process names
+## Variables:
+##    $pid (String) The process id of this process, assigned by the OS.
+##    $origin (String) The domain name for this process.
+
+about-processes-web-isolated-process = { $origin } ({ $pid })
+about-processes-web-serviceworker = { $origin } ({ $pid }, serviceworker)
+about-processes-with-coop-coep-process = { $origin } ({ $pid }, cross-origin isolated)
+about-processes-web-isolated-process-private = { $origin } — Private ({ $pid })
+about-processes-with-coop-coep-process-private = { $origin } — Private ({ $pid }, cross-origin isolated)
+
+## Details within processes
+
+# Single-line summary of threads (non-idle process)
+# Variables:
+#    $number (Number) The number of threads in the process. Typically larger
+#                     than 30. We don't expect to ever have processes with less
+#                     than 5 threads.
+#    $active (Number) The number of active threads in the process.
+#                     The value will be greater than 0 and will never be
+#                     greater than $number.
+#    $list (String) Comma separated list of active threads.
+#                   Can be an empty string if the process is idle.
+about-processes-active-threads =
+    { $active ->
+        [one] { $active } active thread out of { $number }: { $list }
+       *[other] { $active } active threads out of { $number }: { $list }
+    }
+# Single-line summary of threads (idle process)
+# Variables:
+#    $number (Number) The number of threads in the process. Typically larger
+#                     than 30. We don't expect to ever have processes with less
+#                     than 5 threads.
+#                     The process is idle so all threads are inactive.
+about-processes-inactive-threads =
+    { $number ->
+        [one] { $number } inactive thread
+       *[other] { $number } inactive threads
+    }
+# Thread details
+# Variables:
+#   $name (String) The name assigned to the thread.
+#   $tid (String) The thread id of this thread, assigned by the OS.
+about-processes-thread-name-and-id = { $name }
+    .title = Thread id: { $tid }
+# Tab
+# Variables:
+#   $name (String) The name of the tab (typically the title of the page, might be the url while the page is loading).
+about-processes-tab-name = Tab: { $name }
+about-processes-preloaded-tab = Preloaded New Tab
+# Single subframe
+# Variables:
+#   $url (String) The full url of this subframe.
+about-processes-frame-name-one = Subframe: { $url }
+# Group of subframes
+# Variables:
+#   $number (Number) The number of subframes in this group. Always ≥ 1.
+#   $shortUrl (String) The shared prefix for the subframes in the group.
+about-processes-frame-name-many = Subframes ({ $number }): { $shortUrl }
+
+## Utility process actor names
+
+about-processes-utility-actor-unknown = Unknown actor
+about-processes-utility-actor-audio-decoder-generic = Generic Audio Decoder
+about-processes-utility-actor-audio-decoder-applemedia = Apple Media Audio Decoder
+about-processes-utility-actor-audio-decoder-wmf = Windows Media Framework Audio Decoder
+about-processes-utility-actor-mf-media-engine = Windows Media Foundation Media Engine CDM
+# "Oracle" refers to an internal Firefox process and should be kept in English
+about-processes-utility-actor-js-oracle = JavaScript Oracle
+about-processes-utility-actor-windows-utils = Windows Utils
+about-processes-utility-actor-windows-file-dialog = Windows File Dialogue
+
+## Displaying CPU (percentage and total)
+## Variables:
+##    $percent (Number) The percentage of CPU used by the process or thread.
+##                      Always > 0, generally <= 200.
+##    $total (Number) The amount of time used by the process or thread since
+##                    its start.
+##    $unit (String) The unit in which to display $total. See the definitions
+##                   of `duration-unit-*`.
+
+# Common case.
+about-processes-cpu = { NUMBER($percent, maximumSignificantDigits: 2, style: "percent") }
+    .title = Total CPU time: { NUMBER($total, maximumFractionDigits: 0) }{ $unit }
+# Special case: data is not available yet.
+about-processes-cpu-user-and-kernel-not-ready = (measuring)
+# Special case: process or thread is almost idle (using less than 0.1% of a CPU core).
+# This case only occurs on Windows where the precision of the CPU times is low.
+about-processes-cpu-almost-idle = < 0.1%
+    .title = Total CPU time: { NUMBER($total, maximumFractionDigits: 0) }{ $unit }
+# Special case: process or thread is currently idle.
+about-processes-cpu-fully-idle = idle
+    .title = Total CPU time: { NUMBER($total, maximumFractionDigits: 0) }{ $unit }
+
+## Displaying Memory (total and delta)
+## Variables:
+##    $total (Number) The amount of memory currently used by the process.
+##    $totalUnit (String) The unit in which to display $total. See the definitions
+##                        of `memory-unit-*`.
+##    $delta (Number) The absolute value of the amount of memory added recently.
+##    $deltaSign (String) Either "+" if the amount of memory has increased
+##                        or "-" if it has decreased.
+##    $deltaUnit (String) The unit in which to display $delta. See the definitions
+##                        of `memory-unit-*`.
+
+# Common case.
+about-processes-total-memory-size-changed = { NUMBER($total, maximumFractionDigits: 0) }{ $totalUnit }
+    .title = Evolution: { $deltaSign }{ NUMBER($delta, maximumFractionDigits: 0) }{ $deltaUnit }
+# Special case: no change.
+about-processes-total-memory-size-no-change = { NUMBER($total, maximumFractionDigits: 0) }{ $totalUnit }
+
+## Duration units
+
+duration-unit-ns = ns
+duration-unit-us = µs
+duration-unit-ms = ms
+duration-unit-s = s
+duration-unit-m = m
+duration-unit-h = h
+duration-unit-d = d
+
+## Memory units
+
+memory-unit-B = B
+memory-unit-KB = kB
+memory-unit-MB = MB
+memory-unit-GB = GB
+memory-unit-TB = TB
+memory-unit-PB = PB
+memory-unit-EB = EB
diff --git a/l10n-en-GB/toolkit/toolkit/about/aboutProfiles.ftl b/l10n-en-GB/toolkit/toolkit/about/aboutProfiles.ftl
new file mode 100644
index 0000000000..c11b89b321
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/about/aboutProfiles.ftl
@@ -0,0 +1,74 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+profiles-title = About Profiles
+profiles-subtitle = This page helps you to manage your profiles. Each profile is a separate world which contains separate history, bookmarks, settings and add-ons.
+profiles-create = Create a New Profile
+profiles-restart-title = Restart
+profiles-restart-in-safe-mode = Restart with Add-ons Disabled…
+profiles-restart-normal = Restart normally…
+profiles-conflict = Another copy of { -brand-product-name } has made changes to profiles. You must restart { -brand-short-name } before making more changes.
+profiles-flush-fail-title = Changes not saved
+profiles-flush-conflict = { profiles-conflict }
+profiles-flush-failed = An unexpected error has prevented your changes from being saved.
+profiles-flush-restart-button = Restart { -brand-short-name }
+
+# Variables:
+#   $name (String) - Name of the profile
+profiles-name = Profile: { $name }
+profiles-is-default = Default Profile
+profiles-rootdir = Root Directory
+
+# localDir is used to show the directory corresponding to
+# the main profile directory that exists for the purpose of storing data on the
+# local filesystem, including cache files or other data files that may not
+# represent critical user data. (e.g., this directory may not be included as
+# part of a backup scheme.)
+# In case localDir and rootDir are equal, localDir is not shown.
+profiles-localdir = Local Directory
+profiles-current-profile = This is the profile in use and it cannot be deleted.
+profiles-in-use-profile = This profile is in use in another application and it cannot be deleted.
+
+profiles-rename = Rename
+profiles-remove = Remove
+profiles-set-as-default = Set as default profile
+profiles-launch-profile = Launch profile in new browser
+
+profiles-cannot-set-as-default-title = Unable to set default
+profiles-cannot-set-as-default-message = The default profile cannot be changed for { -brand-short-name }.
+
+profiles-yes = yes
+profiles-no = no
+
+profiles-rename-profile-title = Rename Profile
+# Variables:
+#   $name (String) - Name of the profile
+profiles-rename-profile = Rename profile { $name }
+
+profiles-invalid-profile-name-title = Invalid profile name
+# Variables:
+#   $name (String) - Name of the profile
+profiles-invalid-profile-name = The profile name “{ $name }” is not allowed.
+
+profiles-delete-profile-title = Delete Profile
+# Variables:
+#   $dir (String) - Path to be displayed
+profiles-delete-profile-confirm =
+    Deleting a profile will remove the profile from the list of available profiles and cannot be undone.
+    You may also choose to delete the profile data files, including your settings, certificates and other user-related data. This option will delete the folder “{ $dir }” and cannot be undone.
+    Would you like to delete the profile data files?
+profiles-delete-files = Delete Files
+profiles-dont-delete-files = Don’t Delete Files
+
+profiles-delete-profile-failed-title = Error
+profiles-delete-profile-failed-message = There was an error while attempting to delete this profile.
+
+
+profiles-opendir =
+    { PLATFORM() ->
+        [macos] Show in Finder
+        [windows] Open Folder
+       *[other] Open Directory
+    }
diff --git a/l10n-en-GB/toolkit/toolkit/about/aboutReader.ftl b/l10n-en-GB/toolkit/toolkit/about/aboutReader.ftl
new file mode 100644
index 0000000000..bd0e4a5aad
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/about/aboutReader.ftl
@@ -0,0 +1,52 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+about-reader-loading = Loading…
+about-reader-load-error = Failed to load article from page
+
+about-reader-color-scheme-light = Light
+    .title = Colour Scheme Light
+about-reader-color-scheme-dark = Dark
+    .title = Colour Scheme Dark
+about-reader-color-scheme-sepia = Sepia
+    .title = Colour Scheme Sepia
+about-reader-color-scheme-auto = Auto
+    .title = Colour Scheme Auto
+
+# An estimate for how long it takes to read an article,
+# expressed as a range covering both slow and fast readers.
+# Variables:
+#   $rangePlural (String): The plural category of the range, using the same set as for numbers.
+#   $range (String): The range of minutes as a localised string. Examples: "3-7", "~1".
+about-reader-estimated-read-time =
+    { $rangePlural ->
+        [one] { $range } minute
+       *[other] { $range } minutes
+    }
+
+## These are used as tooltips in Type Control
+
+about-reader-toolbar-minus =
+    .title = Decrease Font Size
+about-reader-toolbar-plus =
+    .title = Increase Font Size
+about-reader-toolbar-contentwidthminus =
+    .title = Decrease Content Width
+about-reader-toolbar-contentwidthplus =
+    .title = Increase Content Width
+about-reader-toolbar-lineheightminus =
+    .title = Decrease Line Height
+about-reader-toolbar-lineheightplus =
+    .title = Increase Line Height
+
+## These are the styles of typeface that are options in the reader view controls.
+
+about-reader-font-type-serif = Serif
+about-reader-font-type-sans-serif = Sans-serif
+
+## Reader View toolbar buttons
+
+about-reader-toolbar-close = Close Reader View
+about-reader-toolbar-type-controls = Type controls
+about-reader-toolbar-savetopocket = Save To { -pocket-brand-name }
diff --git a/l10n-en-GB/toolkit/toolkit/about/aboutRights.ftl b/l10n-en-GB/toolkit/toolkit/about/aboutRights.ftl
new file mode 100644
index 0000000000..e3b18294ad
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/about/aboutRights.ftl
@@ -0,0 +1,55 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+rights-title = About Your Rights
+rights-intro = { -brand-full-name } is free and open source software, built by a community of thousands from all over the world. There are a few things you should know:
+rights-intro-point-1 = { -brand-short-name } is made available to you under the terms of the <a data-l10n-name="mozilla-public-license-link">Mozilla Public Licence</a>. This means you may use, copy and distribute { -brand-short-name } to others.  You are also welcome to modify the source code of { -brand-short-name } as you want to meet your needs. The Mozilla Public Licence also gives you the right to distribute your modified versions.
+rights-intro-point-2 = You are not granted any trademark rights or licences to the trademarks of the Mozilla Foundation or any party, including without limitation the Firefox name or logo. Additional information on trademarks may be found <a data-l10n-name="mozilla-trademarks-link">here</a>.
+rights-intro-point-3 = Some features in { -brand-short-name }, such as the Crash Reporter, give you the option to provide feedback to { -vendor-short-name }. By choosing to submit feedback, you give { -vendor-short-name } permission to use the feedback to improve its products, to publish the feedback on its web sites, and to distribute the feedback.
+rights-intro-point-4 = How we use your personal information and feedback submitted to { -vendor-short-name } through { -brand-short-name } is described in the <a data-l10n-name="mozilla-privacy-policy-link">{ -brand-short-name } Privacy Policy</a>.
+rights-intro-point-4-unbranded = Any applicable privacy policies for this product should be listed here.
+rights-intro-point-5 = Some { -brand-short-name } features make use of web-based information services, however, we cannot guarantee they are 100% accurate or error-free. More details, including information on how to disable the features that use these services, can be found in the <a data-l10n-name="mozilla-service-terms-link">service terms</a>.
+rights-intro-point-5-unbranded = If this product incorporates web services, any applicable service terms for the service(s) should be linked to the <a data-l10n-name="mozilla-website-services-link">Web Site Services</a> section.
+rights-intro-point-6 = In order to play back certain types of video content, { -brand-short-name } downloads certain content decryption modules from third parties.
+rights-webservices-header = { -brand-full-name } Web-Based Information Services
+rights-webservices =
+    { -brand-full-name } uses web-based information services (“Services”) to
+    provide some of the features provided for your use with this binary version
+    of { -brand-short-name } under the terms described below. If you do not
+    want to use one or more of the Services or the terms below are
+    unacceptable, you may disable the feature or Service(s). Instructions on
+    how to disable a particular feature or Service may be found
+    <a data-l10n-name="mozilla-disable-service-link">here</a>. Other features
+    and Services can be disabled in the application preferences.
+rights-safebrowsing = <strong>SafeBrowsing: </strong>Disabling the Safe Browsing feature is not recommended as it may result in you going to unsafe sites.  If you wish to disable the feature completely, follow these steps:
+rights-safebrowsing-term-1 = Open the application preferences
+rights-safebrowsing-term-2 = Select the Security selection
+rights-safebrowsing-term-3 = Untick the option to “{ enableSafeBrowsing-label }”
+enableSafeBrowsing-label = Block dangerous and deceptive content
+rights-safebrowsing-term-4 = Safe Browsing is now disabled
+rights-locationawarebrowsing = <strong>Location Aware Browsing: </strong>is always opt-in.  No location information is ever sent without your permission.  If you wish to disable the feature completely, follow these steps:
+rights-locationawarebrowsing-term-1 = In the URL bar, type <code>about:config</code>
+rights-locationawarebrowsing-term-2 = Type geo.enabled
+rights-locationawarebrowsing-term-3 = Double click on the geo.enabled preference
+rights-locationawarebrowsing-term-4 = Location-Aware Browsing is now disabled
+rights-webservices-unbranded = An overview of the web site services the product incorporates, along with instructions on how to disable them, if applicable, should be included here.
+rights-webservices-term-unbranded = Any applicable service terms for this product should be listed here.
+rights-webservices-term-1 = { -vendor-short-name } and its contributors, licensors and partners work to provide the most accurate and up-to-date Services.  However, we cannot guarantee that this information is comprehensive and error-free.  For example, the Safe Browsing Service may not identify some risky sites and may identify some safe sites in error and the Location Aware Service all locations returned by our service providers are estimates only and neither we nor our service providers guarantee the accuracy of the locations provided.
+rights-webservices-term-2 = { -vendor-short-name } may discontinue or change the Services at its discretion.
+rights-webservices-term-3 = You are welcome to use these Services with the accompanying version of { -brand-short-name }, and { -vendor-short-name } grants you its rights to do so.  { -vendor-short-name } and its licensors reserve all other rights in the Services.  These terms are not intended to limit any rights granted under open source licences applicable to { -brand-short-name } and to corresponding source code versions of { -brand-short-name }.
+rights-webservices-term-4 =
+    <strong>The Services are provided “as-is.” { -vendor-short-name }, its
+    contributors, licensors, and distributors, disclaim all warranties, whether
+    express or implied, including without limitation, warranties that the
+    Services are merchantable and fit for your particular purposes. You bear
+    the entire risk as to selecting the Services for your purposes and as to
+    the quality and performance of the Services. Some jurisdictions do not
+    allow the exclusion or limitation of implied warranties, so this disclaimer
+    may not apply to you.</strong>
+rights-webservices-term-5 = <strong>Except as required by law, { -vendor-short-name }, its contributors, licensors, and distributors will not be liable for any indirect, special, incidental, consequential, punitive, or exemplary damages arising out of or in any way relating to the use of { -brand-short-name } and the Services.  The collective liability under these terms will not exceed $500 (five hundred dollars). Some jurisdictions do not allow the exclusion or limitation of certain damages, so this exclusion and limitation may not apply to you.</strong>
+rights-webservices-term-6 =
+    { -vendor-short-name } may update these terms as necessary from time to
+    time. These terms may not be modified or canceled without
+    { -vendor-short-name }’s written agreement.
+rights-webservices-term-7 = These terms are governed by the laws of the state of California, U.S.A., excluding its conflict of law provisions. If any portion of these terms is held to be invalid or unenforceable, the remaining portions will remain in full force and effect. In the event of a conflict between a translated version of these terms and the English language version, the English language version shall control.
diff --git a/l10n-en-GB/toolkit/toolkit/about/aboutServiceWorkers.ftl b/l10n-en-GB/toolkit/toolkit/about/aboutServiceWorkers.ftl
new file mode 100644
index 0000000000..edf2fed9f1
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/about/aboutServiceWorkers.ftl
@@ -0,0 +1,40 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+### The term "Service Workers" and "Workers" should not be translated
+
+about-service-workers-title = About Service Workers
+about-service-workers-main-title = Registered Service Workers
+about-service-workers-warning-not-enabled = Service Workers are not enabled.
+about-service-workers-warning-no-service-workers = No Service Workers registered.
+
+# The original title of service workers' information
+#
+# Variables:
+#   $originTitle: original title
+origin-title = Origin: { $originTitle }
+
+## These strings are for showing the information of workers.
+##
+## Variables:
+##  $name: the name of scope, active cache, waiting cache and the push end point.
+##  $url: the url of script specification and current worker.
+
+scope = <strong>Scope:</strong> { $name }
+script-spec = <strong>Script Spec:</strong> <a data-l10n-name="link">{ $url }</a>
+current-worker-url = <strong>Current Worker URL:</strong> <a data-l10n-name="link">{ $url }</a>
+active-cache-name = <strong>Active Cache Name:</strong> { $name }
+waiting-cache-name = <strong>Waiting Cache Name:</strong> { $name }
+push-end-point-waiting = <strong>Push Endpoint:</strong> { waiting }
+push-end-point-result = <strong>Push Endpoint:</strong> { $name }
+
+# This term is used as a button label (verb, not noun).
+update-button = Update
+
+unregister-button = Unregister
+
+unregister-error = Failed to unregister this Service Worker.
+
+waiting = Waiting…
diff --git a/l10n-en-GB/toolkit/toolkit/about/aboutSupport.ftl b/l10n-en-GB/toolkit/toolkit/about/aboutSupport.ftl
new file mode 100644
index 0000000000..119c116266
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/about/aboutSupport.ftl
@@ -0,0 +1,429 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+page-title = Troubleshooting Information
+page-subtitle =
+    This page contains technical information that might be useful when you’re
+    trying to solve a problem. If you are looking for answers to common questions
+    about { -brand-short-name }, check out our <a data-l10n-name="support-link">support web site</a>.
+crashes-title = Crash Reports
+crashes-id = Report ID
+crashes-send-date = Submitted
+crashes-all-reports = All Crash Reports
+crashes-no-config = This application has not been configured to display crash reports.
+support-addons-title = Add-ons
+support-addons-name = Name
+support-addons-type = Type
+support-addons-enabled = Enabled
+support-addons-version = Version
+support-addons-id = ID
+legacy-user-stylesheets-title = Legacy User Stylesheets
+legacy-user-stylesheets-enabled = Active
+legacy-user-stylesheets-stylesheet-types = Stylesheets
+legacy-user-stylesheets-no-stylesheets-found = No stylesheets found
+security-software-title = Security Software
+security-software-type = Type
+security-software-name = Name
+security-software-antivirus = Antivirus
+security-software-antispyware = Antispyware
+security-software-firewall = Firewall
+features-title = { -brand-short-name } Features
+features-name = Name
+features-version = Version
+features-id = ID
+processes-title = Remote Processes
+processes-type = Type
+processes-count = Count
+app-basics-title = Application Basics
+app-basics-name = Name
+app-basics-version = Version
+app-basics-build-id = Build ID
+app-basics-distribution-id = Distribution ID
+app-basics-update-channel = Update Channel
+# This message refers to the folder used to store updates on the device,
+# as in "Folder for updates". "Update" is a noun, not a verb.
+app-basics-update-dir =
+    { PLATFORM() ->
+        [linux] Update Directory
+       *[other] Update Folder
+    }
+app-basics-update-history = Update History
+app-basics-show-update-history = Show Update History
+# Represents the path to the binary used to start the application.
+app-basics-binary = Application Binary
+app-basics-profile-dir =
+    { PLATFORM() ->
+        [linux] Profile Directory
+       *[other] Profile Folder
+    }
+app-basics-enabled-plugins = Enabled Plugins
+app-basics-build-config = Build Configuration
+app-basics-user-agent = User Agent
+app-basics-os = OS
+app-basics-os-theme = OS Theme
+# Rosetta is Apple's translation process to run apps containing x86_64
+# instructions on Apple Silicon. This should remain in English.
+app-basics-rosetta = Rosetta Translated
+app-basics-memory-use = Memory Use
+app-basics-performance = Performance
+app-basics-service-workers = Registered Service Workers
+app-basics-third-party = Third-party Modules
+app-basics-profiles = Profiles
+app-basics-launcher-process-status = Launcher Process
+app-basics-multi-process-support = Multiprocess Windows
+app-basics-fission-support = Fission Windows
+app-basics-remote-processes-count = Remote Processes
+app-basics-enterprise-policies = Enterprise Policies
+app-basics-location-service-key-google = Google Location Service Key
+app-basics-safebrowsing-key-google = Google Safebrowsing Key
+app-basics-key-mozilla = Mozilla Location Service Key
+app-basics-safe-mode = Safe Mode
+app-basics-memory-size = Memory Size (RAM)
+app-basics-disk-available = Disk Space Available
+app-basics-pointing-devices = Pointing Devices
+# Variables:
+#   $value (number) - Amount of data being stored
+#   $unit (string) - The unit of data being stored (e.g. MB)
+app-basics-data-size = { $value } { $unit }
+show-dir-label =
+    { PLATFORM() ->
+        [macos] Show in Finder
+        [windows] Open Folder
+       *[other] Open Directory
+    }
+environment-variables-title = Environment Variables
+environment-variables-name = Name
+environment-variables-value = Value
+experimental-features-title = Experimental Features
+experimental-features-name = Name
+experimental-features-value = Value
+modified-key-prefs-title = Important Modified Preferences
+modified-prefs-name = Name
+modified-prefs-value = Value
+user-js-title = user.js Preferences
+user-js-description = Your profile folder contains a <a data-l10n-name="user-js-link">user.js file</a>, which includes preferences that were not created by { -brand-short-name }.
+locked-key-prefs-title = Important Locked Preferences
+locked-prefs-name = Name
+locked-prefs-value = Value
+graphics-title = Graphics
+graphics-features-title = Features
+graphics-diagnostics-title = Diagnostics
+graphics-failure-log-title = Failure Log
+graphics-gpu1-title = GPU #1
+graphics-gpu2-title = GPU #2
+graphics-decision-log-title = Decision Log
+graphics-crash-guards-title = Crash Guard Disabled Features
+graphics-workarounds-title = Workarounds
+graphics-device-pixel-ratios = Window Device Pixel Ratios
+# Windowing system in use on Linux (e.g. X11, Wayland).
+graphics-window-protocol = Window Protocol
+# Desktop environment in use on Linux (e.g. GNOME, KDE, XFCE, etc).
+graphics-desktop-environment = Desktop Environment
+place-database-title = Places Database
+place-database-stats = Statistics
+place-database-stats-show = Show Statistics
+place-database-stats-hide = Hide Statistics
+place-database-stats-entity = Entity
+place-database-stats-count = Count
+place-database-stats-size-kib = Size (KiB)
+place-database-stats-size-perc = Size (%)
+place-database-stats-efficiency-perc = Efficiency (%)
+place-database-stats-sequentiality-perc = Sequentiality (%)
+place-database-integrity = Integrity
+place-database-verify-integrity = Verify Integrity
+a11y-title = Accessibility
+a11y-activated = Activated
+a11y-force-disabled = Prevent Accessibility
+a11y-handler-used = Accessible Handler Used
+a11y-instantiator = Accessibility Instantiator
+library-version-title = Library Versions
+copy-text-to-clipboard-label = Copy text to clipboard
+copy-raw-data-to-clipboard-label = Copy raw data to clipboard
+sandbox-title = Sandbox
+sandbox-sys-call-log-title = Rejected System Calls
+sandbox-sys-call-index = #
+sandbox-sys-call-age = Seconds Ago
+sandbox-sys-call-pid = PID
+sandbox-sys-call-tid = TID
+sandbox-sys-call-proc-type = Process Type
+sandbox-sys-call-number = Syscall
+sandbox-sys-call-args = Arguments
+troubleshoot-mode-title = Diagnose issues
+restart-in-troubleshoot-mode-label = Troubleshoot Mode…
+clear-startup-cache-title = Try clearing the startup cache
+clear-startup-cache-label = Clear startup cache…
+startup-cache-dialog-title2 = Restart { -brand-short-name } to clear startup cache?
+startup-cache-dialog-body2 = This will not change your settings or remove extensions.
+restart-button-label = Restart
+
+## Media titles
+
+audio-backend = Audio Backend
+max-audio-channels = Max Channels
+sample-rate = Preferred Sample Rate
+roundtrip-latency = Roundtrip latency (standard deviation)
+media-title = Media
+media-output-devices-title = Output Devices
+media-input-devices-title = Input Devices
+media-device-name = Name
+media-device-group = Group
+media-device-vendor = Vendor
+media-device-state = State
+media-device-preferred = Preferred
+media-device-format = Format
+media-device-channels = Channels
+media-device-rate = Rate
+media-device-latency = Latency
+media-capabilities-title = Media Capabilities
+media-codec-support-info = Codec Support Information
+# List all the entries of the database.
+media-capabilities-enumerate = Enumerate database
+
+## Codec support table
+
+media-codec-support-sw-decoding = Software Decoding
+media-codec-support-hw-decoding = Hardware Decoding
+media-codec-support-codec-name = Codec Name
+media-codec-support-supported = Supported
+media-codec-support-unsupported = Unsupported
+media-codec-support-error = Codec support information unavailable. Try again after playing back a media file.
+media-codec-support-lack-of-extension = Install extension
+
+## Media Content Decryption Modules (CDM)
+## See EME Spec for more explanation for following technical terms
+## https://w3c.github.io/encrypted-media/
+
+media-content-decryption-modules-title = Content Decryption Modules Information
+media-key-system-name = Key System Name
+media-video-robustness = Video Robustness
+media-audio-robustness = Audio Robustness
+media-cdm-capabilities = Capabilities
+# Clear Lead isn't defined in the spec, which means the the first few seconds
+# are not encrypted. It allows playback to start without having to wait for
+# license response, improving video start time and user experience.
+media-cdm-clear-lead = Clear Lead
+
+##
+
+intl-title = Internationalisation & Localisation
+intl-app-title = Application Settings
+intl-locales-requested = Requested Locales
+intl-locales-available = Available Locales
+intl-locales-supported = App Locales
+intl-locales-default = Default Locale
+intl-os-title = Operating System
+intl-os-prefs-system-locales = System Locales
+intl-regional-prefs = Regional Preferences
+
+## Remote Debugging
+##
+## The Firefox remote protocol provides low-level debugging interfaces
+## used to inspect state and control execution of documents,
+## browser instrumentation, user interaction simulation,
+## and for subscribing to browser-internal events.
+##
+## See also https://firefox-source-docs.mozilla.org/remote/
+
+remote-debugging-title = Remote Debugging (Chromium Protocol)
+remote-debugging-accepting-connections = Accepting Connections
+remote-debugging-url = URL
+
+##
+
+# Variables
+# $days (Integer) - Number of days of crashes to log
+report-crash-for-days =
+    { $days ->
+        [one] Crash Reports for the Last { $days } Day
+       *[other] Crash Reports for the Last { $days } Days
+    }
+# Variables
+# $minutes (integer) - Number of minutes since crash
+crashes-time-minutes =
+    { $minutes ->
+        [one] { $minutes } minute ago
+       *[other] { $minutes } minutes ago
+    }
+# Variables
+# $hours (integer) - Number of hours since crash
+crashes-time-hours =
+    { $hours ->
+        [one] { $hours } hour ago
+       *[other] { $hours } hours ago
+    }
+# Variables
+# $days (integer) - Number of days since crash
+crashes-time-days =
+    { $days ->
+        [one] { $days } day ago
+       *[other] { $days } days ago
+    }
+# Variables
+# $reports (integer) - Number of pending reports
+pending-reports =
+    { $reports ->
+        [one] All Crash Reports (including { $reports } pending crash in the given time range)
+       *[other] All Crash Reports (including { $reports } pending crashes in the given time range)
+    }
+raw-data-copied = Raw data copied to clipboard
+text-copied = Text copied to clipboard
+
+## The verb "blocked" here refers to a graphics feature such as "Direct2D" or "OpenGL layers".
+
+blocked-driver = Blocked for your graphics driver version.
+blocked-gfx-card = Blocked for your graphics card because of unresolved driver issues.
+blocked-os-version = Blocked for your operating system version.
+blocked-mismatched-version = Blocked for your graphics driver version mismatch between registry and DLL.
+# Variables
+# $driverVersion - The graphics driver version string
+try-newer-driver = Blocked for your graphics driver version. Try updating your graphics driver to version { $driverVersion } or newer.
+# "ClearType" is a proper noun and should not be translated. Feel free to leave English strings if
+# there are no good translations, these are only used in about:support
+clear-type-parameters = ClearType Parameters
+compositing = Compositing
+hardware-h264 = Hardware H264 Decoding
+main-thread-no-omtc = main thread, no OMTC
+yes = Yes
+no = No
+unknown = Unknown
+virtual-monitor-disp = Virtual Monitor Display
+
+## The following strings indicate if an API key has been found.
+## In some development versions, it's expected for some API keys that they are
+## not found.
+
+found = Found
+missing = Missing
+gpu-process-pid = GPUProcessPid
+gpu-process = GPUProcess
+gpu-description = Description
+gpu-vendor-id = Vendor ID
+gpu-device-id = Device ID
+gpu-subsys-id = Subsys ID
+gpu-drivers = Drivers
+gpu-ram = RAM
+gpu-driver-vendor = Driver Vendor
+gpu-driver-version = Driver Version
+gpu-driver-date = Driver Date
+gpu-active = Active
+webgl1-wsiinfo = WebGL 1 Driver WSI Info
+webgl1-renderer = WebGL 1 Driver Renderer
+webgl1-version = WebGL 1 Driver Version
+webgl1-driver-extensions = WebGL 1 Driver Extensions
+webgl1-extensions = WebGL 1 Extensions
+webgl2-wsiinfo = WebGL 2 Driver WSI Info
+webgl2-renderer = WebGL 2 Driver Renderer
+webgl2-version = WebGL 2 Driver Version
+webgl2-driver-extensions = WebGL 2 Driver Extensions
+webgl2-extensions = WebGL 2 Extensions
+webgpu-default-adapter = WebGPU Default Adapter
+webgpu-fallback-adapter = WebGPU Fallback Adapter
+# Variables
+#   $bugNumber (string) - Bug number on Bugzilla
+support-blocklisted-bug = Blocklisted due to known issues: <a data-l10n-name="bug-link">bug { $bugNumber }</a>
+# Variables
+# $failureCode (string) - String that can be searched in the source tree.
+unknown-failure = Blocklisted; failure code { $failureCode }
+d3d11layers-crash-guard = D3D11 Compositor
+glcontext-crash-guard = OpenGL
+wmfvpxvideo-crash-guard = WMF VPX Video Decoder
+reset-on-next-restart = Reset on Next Restart
+gpu-process-kill-button = Terminate GPU Process
+gpu-device-reset = Device Reset
+gpu-device-reset-button = Trigger Device Reset
+uses-tiling = Uses Tiling
+content-uses-tiling = Uses Tiling (Content)
+off-main-thread-paint-enabled = Off Main Thread Painting Enabled
+off-main-thread-paint-worker-count = Off Main Thread Painting Worker Count
+target-frame-rate = Target Frame Rate
+min-lib-versions = Expected minimum version
+loaded-lib-versions = Version in use
+has-seccomp-bpf = Seccomp-BPF (System Call Filtering)
+has-seccomp-tsync = Seccomp Thread Synchronisation
+has-user-namespaces = User Namespaces
+has-privileged-user-namespaces = User Namespaces for privileged processes
+can-sandbox-content = Content Process Sandboxing
+can-sandbox-media = Media Plugin Sandboxing
+content-sandbox-level = Content Process Sandbox Level
+effective-content-sandbox-level = Effective Content Process Sandbox Level
+content-win32k-lockdown-state = Win32k Lockdown State for Content Process
+support-sandbox-gpu-level = GPU Process Sandbox Level
+sandbox-proc-type-content = content
+sandbox-proc-type-file = file content
+sandbox-proc-type-media-plugin = media plugin
+sandbox-proc-type-data-decoder = data decoder
+startup-cache-title = Startup Cache
+startup-cache-disk-cache-path = Disk Cache Path
+startup-cache-ignore-disk-cache = Ignore Disk Cache
+startup-cache-found-disk-cache-on-init = Found Disk Cache on Init
+startup-cache-wrote-to-disk-cache = Wrote to Disk Cache
+launcher-process-status-0 = Enabled
+launcher-process-status-1 = Disabled due to failure
+launcher-process-status-2 = Disabled forcibly
+launcher-process-status-unknown = Unknown status
+# Variables
+# $remoteWindows (integer) - Number of remote windows
+# $totalWindows (integer) - Number of total windows
+multi-process-windows = { $remoteWindows }/{ $totalWindows }
+# Variables
+# $fissionWindows (integer) - Number of remote windows
+# $totalWindows (integer) - Number of total windows
+fission-windows = { $fissionWindows }/{ $totalWindows }
+fission-status-experiment-control = Disabled by experiment
+fission-status-experiment-treatment = Enabled by experiment
+fission-status-disabled-by-e10s-env = Disabled by environment
+fission-status-enabled-by-env = Enabled by environment
+fission-status-disabled-by-env = Disabled by environment
+fission-status-enabled-by-default = Enabled by default
+fission-status-disabled-by-default = Disabled by default
+fission-status-enabled-by-user-pref = Enabled by user
+fission-status-disabled-by-user-pref = Disabled by user
+fission-status-disabled-by-e10s-other = E10s disabled
+fission-status-enabled-by-rollout = Enabled by phased rollout
+async-pan-zoom = Asynchronous Pan/Zoom
+apz-none = none
+wheel-enabled = wheel input enabled
+touch-enabled = touch input enabled
+drag-enabled = scrollbar drag enabled
+keyboard-enabled = keyboard enabled
+autoscroll-enabled = autoscroll enabled
+zooming-enabled = smooth pinch-zoom enabled
+
+## Variables
+## $preferenceKey (string) - String ID of preference
+
+wheel-warning = async wheel input disabled due to unsupported pref: { $preferenceKey }
+touch-warning = async touch input disabled due to unsupported pref: { $preferenceKey }
+
+## Strings representing the status of the Enterprise Policies engine.
+
+policies-inactive = Inactive
+policies-active = Active
+policies-error = Error
+
+## Printing section
+
+support-printing-title = Printing
+support-printing-troubleshoot = Troubleshooting
+support-printing-clear-settings-button = Clear saved print settings
+support-printing-modified-settings = Modified print settings
+support-printing-prefs-name = Name
+support-printing-prefs-value = Value
+
+## Normandy sections
+
+support-remote-experiments-title = Remote Experiments
+support-remote-experiments-name = Name
+support-remote-experiments-branch = Experiment Branch
+support-remote-experiments-see-about-studies = See <a data-l10n-name="support-about-studies-link">about:studies</a> for more information, including how to disable individual experiments or to disable { -brand-short-name } from running this type of experiment in the future.
+support-remote-features-title = Remote Features
+support-remote-features-name = Name
+support-remote-features-status = Status
+
+## Pointing devices
+
+pointing-device-mouse = Mouse
+pointing-device-touchscreen = Touchscreen
+pointing-device-pen-digitizer = Pen Digitiser
+pointing-device-none = No pointing devices
diff --git a/l10n-en-GB/toolkit/toolkit/about/aboutTelemetry.ftl b/l10n-en-GB/toolkit/toolkit/about/aboutTelemetry.ftl
new file mode 100644
index 0000000000..549483a89e
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/about/aboutTelemetry.ftl
@@ -0,0 +1,136 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+about-telemetry-ping-data-source = Ping data source:
+about-telemetry-show-current-data = Current data
+about-telemetry-show-archived-ping-data = Archived ping data
+about-telemetry-show-subsession-data = Show subsession data
+about-telemetry-choose-ping = Choose ping:
+about-telemetry-archive-ping-type = Ping Type
+about-telemetry-archive-ping-header = Ping
+about-telemetry-option-group-today = Today
+about-telemetry-option-group-yesterday = Yesterday
+about-telemetry-option-group-older = Older
+about-telemetry-previous-ping = <<
+about-telemetry-next-ping = >>
+about-telemetry-page-title = Telemetry Data
+about-telemetry-current-store = Current Store:
+about-telemetry-more-information = Looking for more information?
+about-telemetry-firefox-data-doc = The <a data-l10n-name="data-doc-link">Firefox Data Documentation</a> contains guides about how to work with our data tools.
+about-telemetry-telemetry-client-doc = The <a data-l10n-name="client-doc-link">Firefox Telemetry client documentation</a> includes definitions for concepts, API documentation and data references.
+about-telemetry-telemetry-dashboard = The <a data-l10n-name="dashboard-link">Telemetry dashboards</a> allow you to visualise the data Mozilla receives via Telemetry.
+about-telemetry-telemetry-probe-dictionary = The <a data-l10n-name="probe-dictionary-link">Probe Dictionary</a> provides details and descriptions for the probes collected by Telemetry.
+about-telemetry-show-in-Firefox-json-viewer = Open in the JSON viewer
+about-telemetry-home-section = Home
+about-telemetry-general-data-section = General Data
+about-telemetry-environment-data-section = Environment Data
+about-telemetry-session-info-section = Session Information
+about-telemetry-scalar-section = Scalars
+about-telemetry-keyed-scalar-section = Keyed Scalars
+about-telemetry-histograms-section = Histograms
+about-telemetry-keyed-histogram-section = Keyed Histograms
+about-telemetry-events-section = Events
+about-telemetry-simple-measurements-section = Simple Measurements
+about-telemetry-slow-sql-section = Slow SQL Statements
+about-telemetry-addon-details-section = Add-on Details
+about-telemetry-late-writes-section = Late Writes
+about-telemetry-raw-payload-section = Raw Payload
+about-telemetry-raw = Raw JSON
+about-telemetry-full-sql-warning = NOTE: Slow SQL debugging is enabled. Full SQL strings may be displayed below but they will not be submitted to Telemetry.
+about-telemetry-fetch-stack-symbols = Fetch function names for stacks
+about-telemetry-hide-stack-symbols = Show raw stack data
+# Selects the correct release version
+# Variables:
+#   $channel (String): represents the corresponding release data string
+about-telemetry-data-type =
+    { $channel ->
+        [release] release data
+       *[prerelease] pre-release data
+    }
+# Selects the correct upload string
+# Variables:
+#   $uploadcase (String): represents a corresponding upload string
+about-telemetry-upload-type =
+    { $uploadcase ->
+        [enabled] enabled
+       *[disabled] disabled
+    }
+# Example Output: 1 sample, average = 0, sum = 0
+# Variables:
+#   $sampleCount (Integer): amount of histogram samples
+#   $prettyAverage (Integer): average of histogram samples
+#   $sum (Integer): sum of histogram samples
+about-telemetry-histogram-stats =
+    { $sampleCount ->
+        [one] { $sampleCount } sample, average = { $prettyAverage }, sum = { $sum }
+       *[other] { $sampleCount } samples, average = { $prettyAverage }, sum = { $sum }
+    }
+# Variables:
+#   $telemetryServerOwner (String): the value of the toolkit.telemetry.server_owner preference. Typically "Mozilla"
+about-telemetry-page-subtitle = This page shows the information about performance, hardware, usage and customisations collected by Telemetry. This information is submitted to { $telemetryServerOwner } to help improve { -brand-full-name }.
+about-telemetry-settings-explanation = Telemetry is collecting { about-telemetry-data-type } and upload is <a data-l10n-name="upload-link">{ about-telemetry-upload-type }</a>.
+# Variables:
+#   $name (String): ping name, e.g. “saved-session”
+#   $timeStamp (String): ping localized timestamp, e.g. “2017/07/08 10:40:46”
+about-telemetry-ping-details = Each piece of information is sent bundled into “<a data-l10n-name="ping-link">pings</a>”. You are looking at the { $name }, { $timestamp } ping.
+about-telemetry-data-details-current = Each piece of information is sent bundled into “<a data-l10n-name="ping-link">pings</a>“. You are looking at the current data.
+# string used as a placeholder for the search field
+# More info about it can be found here:
+# https://firefox-source-docs.mozilla.org/toolkit/components/telemetry/telemetry/data/main-ping.html
+# Variables:
+#   $selectedTitle (String): the section name from the structure of the ping.
+about-telemetry-filter-placeholder =
+    .placeholder = Find in { $selectedTitle }
+about-telemetry-filter-all-placeholder =
+    .placeholder = Find in all sections
+# Variables:
+#   $searchTerms (String): the searched terms
+about-telemetry-results-for-search = Results for “{ $searchTerms }”
+# More info about it can be found here: https://firefox-source-docs.mozilla.org/toolkit/components/telemetry/telemetry/data/main-ping.html
+# Variables:
+#   $sectionName (String): the section name from the structure of the ping.
+#   $currentSearchText (String): the current text in the search input
+about-telemetry-no-search-results = Sorry! There are no results in { $sectionName } for “{ $currentSearchText }”
+# Variables:
+#   $searchTerms (String): the searched terms
+about-telemetry-no-search-results-all = Sorry! There are no results in any sections for “{ $searchTerms }”
+# This message is displayed when a section is empty.
+# Variables:
+#   $sectionName (String): is replaced by the section name.
+about-telemetry-no-data-to-display = Sorry! There is currently no data available in “{ $sectionName }”
+# used as a tooltip for the “current” ping title in the sidebar
+about-telemetry-current-data-sidebar = current data
+# used in the “Ping Type” select
+about-telemetry-telemetry-ping-type-all = all
+# button label to copy the histogram
+about-telemetry-histogram-copy = Copy
+# these strings are used in the “Slow SQL Statements” section
+about-telemetry-slow-sql-main = Slow SQL Statements on Main Thread
+about-telemetry-slow-sql-other = Slow SQL Statements on Helper Threads
+about-telemetry-slow-sql-hits = Hits
+about-telemetry-slow-sql-average = Avg. Time (ms)
+about-telemetry-slow-sql-statement = Statement
+# these strings are used in the “Add-on Details” section
+about-telemetry-addon-table-id = Add-on ID
+about-telemetry-addon-table-details = Details
+# Variables:
+#   $addonProvider (String): the name of an Add-on Provider (e.g. “XPI”, “Plugin”)
+about-telemetry-addon-provider = { $addonProvider } Provider
+about-telemetry-keys-header = Property
+about-telemetry-names-header = Name
+about-telemetry-values-header = Value
+# Variables:
+#   $lateWriteCount (Integer): the number of the late writes
+about-telemetry-late-writes-title = Late Write #{ $lateWriteCount }
+about-telemetry-stack-title = Stack:
+about-telemetry-memory-map-title = Memory map:
+about-telemetry-error-fetching-symbols = An error occurred while fetching symbols. Check that you are connected to the Internet and try again.
+about-telemetry-time-stamp-header = timestamp
+about-telemetry-category-header = category
+about-telemetry-method-header = method
+about-telemetry-object-header = object
+about-telemetry-extra-header = extra
+# Variables:
+#  $process (String): type of process in subsection headers ( e.g. "content", "parent" )
+about-telemetry-process = { $process } process
diff --git a/l10n-en-GB/toolkit/toolkit/about/aboutThirdParty.ftl b/l10n-en-GB/toolkit/toolkit/about/aboutThirdParty.ftl
new file mode 100644
index 0000000000..d309a860d3
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/about/aboutThirdParty.ftl
@@ -0,0 +1,85 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+third-party-page-title = Third-party Module Information
+third-party-section-title = List of third-party modules in { -brand-short-name }
+third-party-intro =
+    This page shows the third-party modules which were injected into your
+    { -brand-short-name }. Any module that is not signed by Microsoft or
+    { -vendor-short-name } is considered to be a third-party module.
+third-party-message-empty = No third-party modules were detected.
+third-party-message-no-duration = Not recorded
+third-party-detail-version = File version
+third-party-detail-vendor = Vendor info
+third-party-detail-occurrences = Occurrences
+    .title = How many times this module was loaded.
+third-party-detail-duration = Avg. Blocking time (ms)
+    .title = How long this module blocked the application.
+third-party-detail-app = Application
+third-party-detail-publisher = Publisher
+third-party-th-process = Process
+third-party-th-duration = Loading Duration (ms)
+third-party-th-status = Status
+third-party-tag-ime = IME
+    .title = This type of module is loaded when you use a third-party IME.
+third-party-tag-shellex = Shell Extension
+    .title = This type of module is loaded when you open the system file dialogue.
+third-party-tag-background = Background
+    .title =
+        This module did not block the application because it was loaded
+        in the background.
+third-party-icon-unsigned =
+    .title = This module is not signed
+    .alt = This module is not signed
+third-party-icon-warning =
+    .title = { -brand-short-name } crashed in code from this module
+    .alt = { -brand-short-name } crashed in code from this module
+third-party-status-loaded = Loaded
+third-party-status-blocked = Blocked
+third-party-status-redirected = Redirected
+third-party-button-copy-to-clipboard = Copy raw data to clipboard
+third-party-loading-data =
+    .alt = Loading system information…
+    .title = Loading system information…
+third-party-button-reload = Reload with system info
+    .title = Reload with system information
+third-party-button-open =
+    .title = Open file location…
+third-party-button-to-block =
+    .title = Block this module
+    .aria-label = Block this module
+third-party-button-to-unblock =
+    .title = Currently blocked. Click to unblock it.
+    .aria-label = Currently blocked. Click to unblock it.
+third-party-button-to-unblock-disabled =
+    .title =
+        Currently marked as blocked, although the blocklist is disabled for this run
+        of { -brand-short-name }. Click to unblock it.
+    .aria-label =
+        Currently marked as blocked, although the blocklist is disabled for this run
+        of { -brand-short-name }. Click to unblock it.
+third-party-button-to-block-module = Block this module
+    .title = Block this module
+    .aria-label = Block this module
+third-party-button-to-unblock-module = Unblock this module
+    .title = Currently blocked. Click to unblock it.
+    .aria-label = Currently blocked. Click to unblock it.
+third-party-button-to-unblock-module-disabled = Unblock this module (blocklist currently disabled)
+    .title =
+        Currently marked as blocked, although the blocklist is disabled for this run
+        of { -brand-short-name }. Click to unblock it.
+    .aria-label =
+        Currently marked as blocked, although the blocklist is disabled for this run
+        of { -brand-short-name }. Click to unblock it.
+third-party-button-expand =
+    .title = Show detailed information
+third-party-button-collapse =
+    .title = Collapse detailed information
+third-party-blocking-requires-restart = To block a third-party module, { -brand-short-name } must restart.
+third-party-should-restart-title = Restart { -brand-short-name }
+third-party-restart-now = Restart now
+third-party-restart-later = Restart later
+third-party-blocked-by-builtin =
+    .title = Blocked by { -brand-short-name }
+    .alt = Blocked by { -brand-short-name }
diff --git a/l10n-en-GB/toolkit/toolkit/about/aboutWebauthn.ftl b/l10n-en-GB/toolkit/toolkit/about/aboutWebauthn.ftl
new file mode 100644
index 0000000000..f91fff9b5e
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/about/aboutWebauthn.ftl
@@ -0,0 +1,130 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+### Localization for about:webauthn, a security token management page
+
+# Page title
+# 'WebAuthn' is a protocol name and should not be translated
+about-webauthn-page-title = About WebAuthn
+
+## Section titles
+
+about-webauthn-info-section-title = Device info
+about-webauthn-info-subsection-title = Authenticator info
+about-webauthn-options-subsection-title = Authenticator options
+about-webauthn-pin-section-title = PIN Management
+about-webauthn-credential-management-section-title = Manage credentials
+about-webauthn-pin-required-section-title = PIN required
+about-webauthn-confirm-deletion-section-title = Confirm deletion
+
+## Info field texts
+
+about-webauthn-text-connect-device = Please connect a security token.
+# If multiple devices are plugged in, they will blink and we are asking the user to select one by touching the device they want.
+about-webauthn-text-select-device = Please select your desired security token by touching the device.
+# CTAP2 refers to Client to Authenticator Protocol version 2
+about-webauthn-text-non-ctap2-device = Unable to manage options because your security token does not support CTAP2.
+about-webauthn-text-not-available = Not available on this platform.
+
+## Results label
+
+about-webauthn-results-success = Success!
+about-webauthn-results-general-error = Error!
+# Variables:
+#  $retriesLeft (Number): number of tries left
+about-webauthn-results-pin-invalid-error =
+    { $retriesLeft ->
+        [0] Error: Incorrect PIN. Try again.
+        [one] Error: Incorrect PIN. Try again. You have one attempt left.
+       *[other] Error: Incorrect PIN. Try again. You have { $retriesLeft } attempts left.
+    }
+about-webauthn-results-pin-blocked-error = Error: There are no attempts left and your device has been locked, because the wrong PIN was provided too many times. The device needs a reset.
+about-webauthn-results-pin-too-short-error = Error: The given PIN is too short.
+about-webauthn-results-pin-too-long-error = Error: The given PIN is too long.
+about-webauthn-results-pin-auth-blocked-error = Error: There were too many failed attempts in a row and PIN authentication has been temporarily blocked. Your device needs a power cycle (unplug and re-insert).
+about-webauthn-results-cancelled-by-user-error = Error: Operation has been cancelled by the user.
+
+## Labels
+
+about-webauthn-new-pin-label = New PIN:
+about-webauthn-repeat-pin-label = Repeat new PIN:
+about-webauthn-current-pin-label = Current PIN:
+about-webauthn-pin-required-label = Please enter your PIN:
+about-webauthn-credential-list-subsection-title = Credentials:
+about-webauthn-credential-list-empty = No credentials found on device.
+about-webauthn-confirm-deletion-label = You are about to delete:
+
+## Buttons
+
+about-webauthn-current-set-pin-button = Set PIN
+about-webauthn-current-change-pin-button = Change PIN
+# List is a verb, as in "Show list of credentials"
+about-webauthn-list-credentials-button = List credentials
+about-webauthn-cancel-button = Cancel
+about-webauthn-send-pin-button = OK
+about-webauthn-delete-button = Delete
+
+## Authenticator options fields
+## Option fields correspond to the CTAP2 option IDs and definitions found in https://fidoalliance.org/specs/fido-v2.1-ps-20210615/fido-client-to-authenticator-protocol-v2.1-ps-20210615.html#option-id
+
+about-webauthn-auth-option-uv = User verification
+about-webauthn-auth-option-up = User presence
+about-webauthn-auth-option-clientpin = Client PIN
+about-webauthn-auth-option-rk = Resident key
+about-webauthn-auth-option-plat = Platform device
+# pinUvAuthToken should not be translated.
+about-webauthn-auth-option-pinuvauthtoken = Command permissions (pinUvAuthToken)
+# MakeCredential and GetAssertion should not be translated.
+about-webauthn-auth-option-nomcgapermissionswithclientpin = No MakeCredential / GetAssertion permissions with client PIN
+about-webauthn-auth-option-largeblobs = Large blobs
+about-webauthn-auth-option-ep = Enterprise attestation
+about-webauthn-auth-option-bioenroll = Biometric enrolment
+# FIDO_2_1_PRE should not be translated.
+about-webauthn-auth-option-userverificationmgmtpreview = Prototype of biometric enrolment (FIDO_2_1_PRE)
+about-webauthn-auth-option-uvbioenroll = Biometric enrolment permission
+about-webauthn-auth-option-authnrcfg = Authenticator config
+about-webauthn-auth-option-uvacfg = Authenticator config permission
+about-webauthn-auth-option-credmgmt = Credential management
+about-webauthn-auth-option-credentialmgmtpreview = Prototype credential management
+about-webauthn-auth-option-setminpinlength = Set minimum PIN length
+# MakeCredential should not be translated.
+about-webauthn-auth-option-makecreduvnotrqd = MakeCredential without user verification
+about-webauthn-auth-option-alwaysuv = Always require user verification
+# Shows when boolean value for an option is True. True should not be translated.
+about-webauthn-auth-option-true = True
+# Shows when boolean value of an option is False. False should not be translated.
+about-webauthn-auth-option-false = False
+# If the value is missing (null), it means a certain feature is not supported.
+about-webauthn-auth-option-null = Not supported
+
+## Authenticator info fields
+## Info fields correspond to the CTAP2 authenticatorGetInfo field member name and definitions found in https://fidoalliance.org/specs/fido-v2.1-ps-20210615/fido-client-to-authenticator-protocol-v2.1-ps-20210615.html#authenticatorGetInfo
+
+about-webauthn-auth-info-vendor-prototype-config-commands = Vendor prototype config commands
+about-webauthn-auth-info-remaining-discoverable-credentials = Remaining discoverable credentials
+about-webauthn-auth-info-certifications = Certifications
+about-webauthn-auth-info-uv-modality = User verification modality
+about-webauthn-auth-info-preferred-platform-uv-attempts = Preferred platform user verification attempts
+about-webauthn-auth-info-max-rpids-for-set-min-pin-length = Max relying party IDs for set minimum PIN length
+about-webauthn-auth-info-max-cred-blob-length = Max credential blob length
+about-webauthn-auth-info-firmware-version = Firmware version
+about-webauthn-auth-info-min-pin-length = Minimum PIN length
+about-webauthn-auth-info-force-pin-change = Force PIN change
+about-webauthn-auth-info-max-ser-large-blob-array = Max size of large blob array
+about-webauthn-auth-info-algorithms = Algorithms
+about-webauthn-auth-info-transports = Transports
+about-webauthn-auth-info-max-credential-id-length = Max credential ID length
+about-webauthn-auth-info-max-credential-count-in-list = Max credential count in list
+about-webauthn-auth-info-pin-protocols = PIN protocols
+about-webauthn-auth-info-max-msg-size = Max message size
+# AAGUID should not be translated.
+about-webauthn-auth-info-aaguid = AAGUID
+about-webauthn-auth-info-extensions = Extensions
+about-webauthn-auth-info-versions = Versions
+# Shows when boolean value for an info field is True. True should not be translated.
+about-webauthn-auth-info-true = True
+# Shows when boolean value for an info field is False. False should not be translated.
+about-webauthn-auth-info-false = False
+about-webauthn-auth-info-null = Not supported
diff --git a/l10n-en-GB/toolkit/toolkit/about/aboutWebrtc.ftl b/l10n-en-GB/toolkit/toolkit/about/aboutWebrtc.ftl
new file mode 100644
index 0000000000..d5ed88b2a1
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/about/aboutWebrtc.ftl
@@ -0,0 +1,327 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+### Localization for about:webrtc, a troubleshooting and diagnostic page
+### for WebRTC calls. See https://developer.mozilla.org/en-US/docs/Web/API/WebRTC_API.
+
+# The text "WebRTC" is a proper noun and should not be translated.
+about-webrtc-document-title = WebRTC Internals
+# "about:webrtc" is a internal browser URL and should not be
+# translated. This string is used as a title for a file save dialog box.
+about-webrtc-save-page-dialog-title = save about:webrtc as
+
+## These labels are for a disclosure which contains the information for closed PeerConnection sections
+
+about-webrtc-closed-peerconnection-disclosure-show-msg = Show Closed PeerConnections
+about-webrtc-closed-peerconnection-disclosure-hide-msg = Hide Closed PeerConnections
+
+## AEC is an abbreviation for Acoustic Echo Cancellation.
+
+about-webrtc-aec-logging-msg-label = AEC Logging
+about-webrtc-aec-logging-off-state-label = Start AEC Logging
+about-webrtc-aec-logging-on-state-label = Stop AEC Logging
+about-webrtc-aec-logging-on-state-msg = AEC logging active (speak with the caller for a few minutes and then stop the capture)
+about-webrtc-aec-logging-toggled-on-state-msg = AEC logging active (speak with the caller for a few minutes and then stop the capture)
+about-webrtc-aec-logging-unavailable-sandbox = The environment variable MOZ_DISABLE_CONTENT_SANDBOX=1 is required to export AEC logs. Only set this variable if you understand the possible risks.
+# Variables:
+#  $path (String) - The path to which the aec log file is saved.
+about-webrtc-aec-logging-toggled-off-state-msg = Captured log files can be found in: { $path }
+
+##
+
+# The autorefresh checkbox causes a stats section to autorefresh its content when checked
+about-webrtc-auto-refresh-label = Auto Refresh
+# Determines the default state of the Auto Refresh check boxes
+about-webrtc-auto-refresh-default-label = Auto Refresh By Default
+# A button which forces a refresh of displayed statistics
+about-webrtc-force-refresh-button = Refresh
+# "PeerConnection" is a proper noun associated with the WebRTC module. "ID" is
+# an abbreviation for Identifier. This string should not normally be translated
+# and is used as a data label.
+about-webrtc-peerconnection-id-label = PeerConnection ID:
+# The number of DataChannels that a PeerConnection has opened
+about-webrtc-data-channels-opened-label = Data Channels Opened:
+# The number of once open DataChannels that a PeerConnection has closed
+about-webrtc-data-channels-closed-label = Data Channels Closed:
+
+## "SDP" is an abbreviation for Session Description Protocol, an IETF standard.
+## See http://wikipedia.org/wiki/Session_Description_Protocol
+
+about-webrtc-sdp-heading = SDP
+about-webrtc-local-sdp-heading = Local SDP
+about-webrtc-local-sdp-heading-offer = Local SDP (Offer)
+about-webrtc-local-sdp-heading-answer = Local SDP (Answer)
+about-webrtc-remote-sdp-heading = Remote SDP
+about-webrtc-remote-sdp-heading-offer = Remote SDP (Offer)
+about-webrtc-remote-sdp-heading-answer = Remote SDP (Answer)
+about-webrtc-sdp-history-heading = SDP History
+about-webrtc-sdp-parsing-errors-heading = SDP Parsing Errors
+
+##
+
+# "RTP" is an abbreviation for the Real-time Transport Protocol, an IETF
+# specification, and should not normally be translated. "Stats" is an
+# abbreviation for Statistics.
+about-webrtc-rtp-stats-heading = RTP Stats
+
+## "ICE" is an abbreviation for Interactive Connectivity Establishment, which
+## is an IETF protocol, and should not normally be translated.
+
+about-webrtc-ice-state = ICE State
+# "Stats" is an abbreviation for Statistics.
+about-webrtc-ice-stats-heading = ICE Stats
+about-webrtc-ice-restart-count-label = ICE restarts:
+about-webrtc-ice-rollback-count-label = ICE rollbacks:
+about-webrtc-ice-pair-bytes-sent = Bytes sent:
+about-webrtc-ice-pair-bytes-received = Bytes received:
+about-webrtc-ice-component-id = Component ID
+
+## These adjectives are used to label a line of statistics collected for a peer
+## connection. The data represents either the local or remote end of the
+## connection.
+
+about-webrtc-type-local = Local
+about-webrtc-type-remote = Remote
+
+##
+
+# This adjective is used to label a table column. Cells in this column contain
+# the localized javascript string representation of "true" or are left blank.
+about-webrtc-nominated = Nominated
+# This adjective is used to label a table column. Cells in this column contain
+# the localized javascript string representation of "true" or are left blank.
+# This represents an attribute of an ICE candidate.
+about-webrtc-selected = Selected
+about-webrtc-save-page-label = Save Page
+about-webrtc-debug-mode-msg-label = Debug Mode
+about-webrtc-debug-mode-off-state-label = Start Debug Mode
+about-webrtc-debug-mode-on-state-label = Stop Debug Mode
+about-webrtc-enable-logging-label = Enable WebRTC Log Preset
+about-webrtc-stats-heading = Session Statistics
+about-webrtc-peerconnections-section-heading = RTCPeerConnection Statistics
+about-webrtc-peerconnections-section-show-msg = Show RTCPeerConnection Statistics
+about-webrtc-peerconnections-section-hide-msg = Hide RTCPeerConnection Statistics
+about-webrtc-stats-clear = Clear History
+about-webrtc-log-heading = Connection Log
+about-webrtc-log-clear = Clear Log
+about-webrtc-log-show-msg = show log
+    .title = click to expand this section
+about-webrtc-log-hide-msg = hide log
+    .title = click to collapse this section
+about-webrtc-log-section-show-msg = Show Log
+    .title = Click to expand this section
+about-webrtc-log-section-hide-msg = Hide Log
+    .title = Click to collapse this section
+about-webrtc-copy-report-button = Copy Report
+about-webrtc-copy-report-history-button = Copy Report History
+
+## These are used to display a header for a PeerConnection.
+## Variables:
+##  $browser-id (Number) - A numeric id identifying the browser tab for the PeerConnection.
+##  $id (String) - A globally unique identifier for the PeerConnection.
+##  $url (String) - The url of the site which opened the PeerConnection.
+##  $now (Date) - The JavaScript timestamp at the time the report was generated.
+
+about-webrtc-connection-open = [ { $browser-id } | { $id } ] { $url } { $now }
+about-webrtc-connection-closed = [ { $browser-id } | { $id } ] { $url } (closed) { $now }
+
+## These are used to indicate what direction media is flowing.
+## Variables:
+##  $codecs - a list of media codecs
+
+about-webrtc-short-send-receive-direction = Send / Receive: { $codecs }
+about-webrtc-short-send-direction = Send: { $codecs }
+about-webrtc-short-receive-direction = Receive: { $codecs }
+
+##
+
+about-webrtc-local-candidate = Local Candidate
+about-webrtc-remote-candidate = Remote Candidate
+about-webrtc-raw-candidates-heading = All Raw Candidates
+about-webrtc-raw-local-candidate = Raw Local Candidate
+about-webrtc-raw-remote-candidate = Raw Remote Candidate
+about-webrtc-raw-cand-show-msg = show raw candidates
+    .title = click to expand this section
+about-webrtc-raw-cand-hide-msg = hide raw candidates
+    .title = click to collapse this section
+about-webrtc-raw-cand-section-show-msg = Show Raw Candidates
+    .title = Click to expand this section
+about-webrtc-raw-cand-section-hide-msg = Hide Raw Candidates
+    .title = Click to collapse this section
+about-webrtc-priority = Priority
+about-webrtc-fold-show-msg = show details
+    .title = click to expand this section
+about-webrtc-fold-hide-msg = hide details
+    .title = click to collapse this section
+about-webrtc-fold-default-show-msg = Show Details
+    .title = Click to expand this section
+about-webrtc-fold-default-hide-msg = Hide Details
+    .title = Click to collapse this section
+about-webrtc-dropped-frames-label = Dropped frames:
+about-webrtc-discarded-packets-label = Discarded packets:
+about-webrtc-decoder-label = Decoder
+about-webrtc-encoder-label = Encoder
+about-webrtc-show-tab-label = Show tab
+about-webrtc-current-framerate-label = Framerate
+about-webrtc-width-px = Width (px)
+about-webrtc-height-px = Height (px)
+about-webrtc-consecutive-frames = Consecutive Frames
+about-webrtc-time-elapsed = Time Elapsed (s)
+about-webrtc-estimated-framerate = Estimated Framerate
+about-webrtc-rotation-degrees = Rotation (degrees)
+about-webrtc-first-frame-timestamp = First Frame Reception Timestamp
+about-webrtc-last-frame-timestamp = Last Frame Reception Timestamp
+
+## SSRCs are identifiers that represent endpoints in an RTP stream
+
+# This is an SSRC on the local side of the connection that is receiving RTP
+about-webrtc-local-receive-ssrc = Local Receiving SSRC
+# This is an SSRC on the remote side of the connection that is sending RTP
+about-webrtc-remote-send-ssrc = Remote Sending SSRC
+
+## These are displayed on the button that shows or hides the
+## PeerConnection configuration disclosure
+
+about-webrtc-pc-configuration-show-msg = Show Configuration
+about-webrtc-pc-configuration-hide-msg = Hide Configuration
+
+##
+
+# An option whose value will not be displayed but instead noted as having been
+# provided
+about-webrtc-configuration-element-provided = Provided
+# An option whose value will not be displayed but instead noted as having not
+# been provided
+about-webrtc-configuration-element-not-provided = Not Provided
+# The options set by the user in about:config that could impact a WebRTC call
+about-webrtc-custom-webrtc-configuration-heading = User Set WebRTC Preferences
+# The options set by the user in about:config that could impact a WebRTC call
+about-webrtc-user-modified-configuration-heading = User Modified WebRTC Configuration
+
+## These are displayed on the button that shows or hides the
+## user modified configuration disclosure
+
+about-webrtc-user-modified-configuration-show-msg = Show User Modified Configuration
+about-webrtc-user-modified-configuration-hide-msg = Hide User Modified Configuration
+
+##
+
+# Section header for estimated bandwidths of WebRTC media flows
+about-webrtc-bandwidth-stats-heading = Estimated Bandwidth
+# The ID of the MediaStreamTrack
+about-webrtc-track-identifier = Track Identifier
+# The estimated bandwidth available for sending WebRTC media in bytes per second
+about-webrtc-send-bandwidth-bytes-sec = Send Bandwidth (bytes/sec)
+# The estimated bandwidth available for receiving WebRTC media in bytes per second
+about-webrtc-receive-bandwidth-bytes-sec = Receive Bandwidth (bytes/sec)
+# Maximum number of bytes per second that will be padding zeros at the ends of packets
+about-webrtc-max-padding-bytes-sec = Maximum Padding (bytes/sec)
+# The amount of time inserted between packets to keep them spaced out
+about-webrtc-pacer-delay-ms = Pacer Delay ms
+# The amount of time it takes for a packet to travel from the local machine to the remote machine,
+# and then have a packet return
+about-webrtc-round-trip-time-ms = RTT ms
+# This is a section heading for video frame statistics for a MediaStreamTrack.
+# see https://developer.mozilla.org/en-US/docs/Web/API/MediaStreamTrack.
+# Variables:
+#   $track-identifier (String) - The unique identifier for the MediaStreamTrack.
+about-webrtc-frame-stats-heading = Video Frame Statistics - MediaStreamTrack ID: { $track-identifier }
+
+## These are paths used for saving the about:webrtc page or log files so
+## they can be attached to bug reports.
+## Variables:
+##  $path (String) - The path to which the file is saved.
+
+about-webrtc-save-page-msg = page saved to: { $path }
+about-webrtc-debug-mode-off-state-msg = trace log can be found at: { $path }
+about-webrtc-debug-mode-on-state-msg = debug mode active, trace log at: { $path }
+about-webrtc-aec-logging-off-state-msg = captured log files can be found in: { $path }
+# This path is used for saving the about:webrtc page so it can be attached to
+# bug reports.
+# Variables:
+#  $path (String) - The path to which the file is saved.
+about-webrtc-save-page-complete-msg = Page saved to: { $path }
+# This is the total number of frames encoded or decoded over an RTP stream.
+# Variables:
+#  $frames (Number) - The number of frames encoded or decoded.
+about-webrtc-frames =
+    { $frames ->
+        [one] { $frames } frame
+       *[other] { $frames } frames
+    }
+# This is the number of audio channels encoded or decoded over an RTP stream.
+# Variables:
+#  $channels (Number) - The number of channels encoded or decoded.
+about-webrtc-channels =
+    { $channels ->
+        [one] { $channels } channel
+       *[other] { $channels } channels
+    }
+# This is the total number of packets received on the PeerConnection.
+# Variables:
+#  $packets (Number) - The number of packets received.
+about-webrtc-received-label =
+    { $packets ->
+        [one] Received { $packets } packet
+       *[other] Received { $packets } packets
+    }
+# This is the total number of packets lost by the PeerConnection.
+# Variables:
+#  $packets (Number) - The number of packets lost.
+about-webrtc-lost-label =
+    { $packets ->
+        [one] Lost { $packets } packet
+       *[other] Lost { $packets } packets
+    }
+# This is the total number of packets sent by the PeerConnection.
+# Variables:
+#  $packets (Number) - The number of packets sent.
+about-webrtc-sent-label =
+    { $packets ->
+        [one] Sent { $packets } packet
+       *[other] Sent { $packets } packets
+    }
+# Jitter is the variance in the arrival time of packets.
+# See: https://w3c.github.io/webrtc-stats/#dom-rtcreceivedrtpstreamstats-jitter
+# Variables:
+#   $jitter (Number) - The jitter.
+about-webrtc-jitter-label = Jitter { $jitter }
+# ICE candidates arriving after the remote answer arrives are considered trickled
+# (an attribute of an ICE candidate). These are highlighted in the ICE stats
+# table with light blue background.
+about-webrtc-trickle-caption-msg = Trickled candidates (arriving after answer) are highlighted in blue
+
+## "SDP" is an abbreviation for Session Description Protocol, an IETF standard.
+## See http://wikipedia.org/wiki/Session_Description_Protocol
+
+# This is used as a header for local SDP.
+# Variables:
+#  $timestamp (Number) - The Unix Epoch time at which the SDP was set.
+about-webrtc-sdp-set-at-timestamp-local = Set Local SDP at timestamp { NUMBER($timestamp, useGrouping: "false") }
+# This is used as a header for remote SDP.
+# Variables:
+#  $timestamp (Number) - The Unix Epoch time at which the SDP was set.
+about-webrtc-sdp-set-at-timestamp-remote = Set Remote SDP at timestamp { NUMBER($timestamp, useGrouping: "false") }
+# This is used as a header for an SDP section contained in two columns allowing for side-by-side comparisons.
+# Variables:
+#  $timestamp (Number) - The Unix Epoch time at which the SDP was set.
+#  $relative-timestamp (Number) - The timestamp relative to the timestamp of the earliest received SDP.
+about-webrtc-sdp-set-timestamp = Timestamp { NUMBER($timestamp, useGrouping: "false") } (+ { $relative-timestamp } ms)
+
+## These are displayed on the button that shows or hides the SDP information disclosure
+
+about-webrtc-show-msg-sdp = Show SDP
+about-webrtc-hide-msg-sdp = Hide SDP
+
+## These are displayed on the button that shows or hides the Media Context information disclosure.
+## The Media Context is the set of preferences and detected capabilities that informs
+## the negotiated CODEC settings.
+
+about-webrtc-media-context-show-msg = Show Media Context
+about-webrtc-media-context-hide-msg = Hide Media Context
+about-webrtc-media-context-heading = Media Context
+
+##
+
diff --git a/l10n-en-GB/toolkit/toolkit/about/aboutWindowsMessages.ftl b/l10n-en-GB/toolkit/toolkit/about/aboutWindowsMessages.ftl
new file mode 100644
index 0000000000..9bd049a6ac
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/about/aboutWindowsMessages.ftl
@@ -0,0 +1,20 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+### Localization for the about:windows-messages page, which is only available
+### on the Windows operating system.
+### This page records and shows messages sent from the operating system to
+### individual browser windows. These messages can be useful in debugging
+### hard-to-reproduce issues with window sizing and position.
+
+# Windows refers to the operating system
+windows-messages-page-title = Windows Messages Information
+windows-messages-intro =
+    This page shows the most recent messages sent by Windows
+    to the { -brand-short-name } browser windows. The
+    bolded entry represents this window. Note that this page shows
+    the most recent messages at the time the page was loaded;
+    to see current ones you will need to refresh the page.
+windows-messages-copy-to-clipboard = Copy to clipboard
diff --git a/l10n-en-GB/toolkit/toolkit/about/abuseReports.ftl b/l10n-en-GB/toolkit/toolkit/about/abuseReports.ftl
new file mode 100644
index 0000000000..daf66b7e5a
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/about/abuseReports.ftl
@@ -0,0 +1,116 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# Localized string used as the dialog window title.
+# "Report" is a noun in this case, "Report for AddonName".
+#
+# Variables:
+#   $addon-name (string) - Name of the add-on being reported
+abuse-report-dialog-title = Report for { $addon-name }
+abuse-report-title-extension = Report This Extension to { -vendor-short-name }
+abuse-report-title-sitepermission = Report This Site Permissions add-on to { -vendor-short-name }
+abuse-report-title-theme = Report This Theme to { -vendor-short-name }
+abuse-report-subtitle = What’s the issue?
+# Variables:
+#   $author-name (string) - Name of the add-on author
+abuse-report-addon-authored-by = by <a data-l10n-name="author-name">{ $author-name }</a>
+abuse-report-learnmore =
+    Unsure what issue to select?
+    <a data-l10n-name="learnmore-link">Learn more about reporting extensions and themes</a>
+abuse-report-learnmore-intro = Unsure what issue to select?
+abuse-report-learnmore-link = Learn more about reporting extensions and themes
+abuse-report-submit-description = Describe the problem (optional)
+abuse-report-textarea =
+    .placeholder = It’s easier for us to address a problem if we have specifics. Please describe what you’re experiencing. Thank you for helping us keep the web healthy.
+abuse-report-submit-note =
+    Note: Don’t include personal information (such as name, email address, phone number, physical address).
+    { -vendor-short-name } keeps a permanent record of these reports.
+
+## Panel buttons.
+
+abuse-report-cancel-button = Cancel
+abuse-report-next-button = Next
+abuse-report-goback-button = Go back
+abuse-report-submit-button = Submit
+
+## Message bars descriptions.
+##
+## Variables:
+##   $addon-name (string) - Name of the add-on
+
+abuse-report-messagebar-aborted = Report for <span data-l10n-name="addon-name">{ $addon-name }</span> canceled.
+abuse-report-messagebar-submitting = Sending report for <span data-l10n-name="addon-name">{ $addon-name }</span>.
+abuse-report-messagebar-submitted = Thank you for submitting a report. Do you want to remove <span data-l10n-name="addon-name">{ $addon-name }</span>?
+abuse-report-messagebar-submitted-noremove = Thank you for submitting a report.
+abuse-report-messagebar-removed-extension = Thank you for submitting a report. You’ve removed the extension <span data-l10n-name="addon-name">{ $addon-name }</span>.
+abuse-report-messagebar-removed-sitepermission = Thank you for submitting a report. You’ve removed the Site Permissions add-on <span data-l10n-name="addon-name">{ $addon-name }</span>.
+abuse-report-messagebar-removed-theme = Thank you for submitting a report. You’ve removed the theme <span data-l10n-name="addon-name">{ $addon-name }</span>.
+abuse-report-messagebar-error = There was an error sending the report for <span data-l10n-name="addon-name">{ $addon-name }</span>.
+abuse-report-messagebar-error-recent-submit = The report for <span data-l10n-name="addon-name">{ $addon-name }</span> wasn’t sent because another report was submitted recently.
+abuse-report-messagebar-aborted2 =
+    .message = Report for { $addon-name } canceled.
+abuse-report-messagebar-submitting2 =
+    .message = Sending report for { $addon-name }.
+abuse-report-messagebar-submitted2 =
+    .message = Thank you for submitting a report. Do you want to remove { $addon-name }?
+abuse-report-messagebar-submitted-noremove2 =
+    .message = Thank you for submitting a report.
+abuse-report-messagebar-removed-extension2 =
+    .message = Thank you for submitting a report. You’ve removed the extension { $addon-name }.
+abuse-report-messagebar-removed-sitepermission2 =
+    .message = Thank you for submitting a report. You’ve removed the Site Permissions add-on { $addon-name }.
+abuse-report-messagebar-removed-theme2 =
+    .message = Thank you for submitting a report. You’ve removed the theme { $addon-name }.
+abuse-report-messagebar-error2 =
+    .message = There was an error sending the report for { $addon-name }.
+abuse-report-messagebar-error-recent-submit2 =
+    .message = The report for { $addon-name } wasn’t sent because another report was submitted recently.
+
+## Message bars actions.
+
+abuse-report-messagebar-action-remove-extension = Yes, Remove It
+abuse-report-messagebar-action-keep-extension = No, I’ll Keep It
+abuse-report-messagebar-action-remove-sitepermission = Yes, Remove It
+abuse-report-messagebar-action-keep-sitepermission = No, I’ll Keep It
+abuse-report-messagebar-action-remove-theme = Yes, Remove It
+abuse-report-messagebar-action-keep-theme = No, I’ll Keep It
+abuse-report-messagebar-action-retry = Retry
+abuse-report-messagebar-action-cancel = Cancel
+
+## Abuse report reasons (optionally paired with related examples and/or suggestions)
+
+abuse-report-damage-reason-v2 = It damaged my computer or compromised my data
+abuse-report-damage-example = Example: Injected malware or stole data
+abuse-report-spam-reason-v2 = It contains spam or inserts unwanted advertising
+abuse-report-spam-example = Example: Insert ads on web pages
+abuse-report-settings-reason-v2 = It changed my search engine, homepage, or new tab without informing or asking me
+abuse-report-settings-suggestions = Before reporting the extension, you can try changing your settings:
+abuse-report-settings-suggestions-search = Change your default search settings
+abuse-report-settings-suggestions-homepage = Change your homepage and new tab
+abuse-report-deceptive-reason-v2 = It claims to be something it’s not
+abuse-report-deceptive-example = Example: Misleading description or imagery
+abuse-report-broken-reason-extension-v2 = It doesn’t work, breaks web sites, or slows down { -brand-product-name }
+abuse-report-broken-reason-sitepermission-v2 = It doesn’t work, breaks web sites, or slows down { -brand-product-name }
+abuse-report-broken-reason-theme-v2 = It doesn’t work or breaks browser display
+abuse-report-broken-example = Example: Features are slow, hard to use, or don’t work; parts of web sites won’t load or look unusual
+abuse-report-broken-suggestions-extension =
+    It sounds like you’ve identified a bug. In addition to submitting a report here, the best way
+    to get a functionality issue resolved is to contact the extension developer.
+    <a data-l10n-name="support-link">Visit the extension’s web site</a> to get the developer information.
+abuse-report-broken-suggestions-sitepermission =
+    It sounds like you’ve identified a bug. In addition to submitting a report here, the best way
+    to get a functionality issue resolved is to contact the website developer.
+    <a data-l10n-name="support-link">Visit the web site</a> to get the developer information.
+abuse-report-broken-suggestions-theme =
+    It sounds like you’ve identified a bug. In addition to submitting a report here, the best way
+    to get a functionality issue resolved is to contact the theme developer.
+    <a data-l10n-name="support-link">Visit the theme’s web site</a> to get the developer information.
+abuse-report-policy-reason-v2 = It contains hateful, violent, or illegal content
+abuse-report-policy-suggestions =
+    Note: Copyright and trademark issues must be reported in a separate process.
+    <a data-l10n-name="report-infringement-link">Use these instructions</a> to
+    report the problem.
+abuse-report-unwanted-reason-v2 = I never wanted it and don’t know how to get rid of it
+abuse-report-unwanted-example = Example: An application installed it without my permission
+abuse-report-other-reason = Something else
diff --git a/l10n-en-GB/toolkit/toolkit/about/certviewer.ftl b/l10n-en-GB/toolkit/toolkit/about/certviewer.ftl
new file mode 100644
index 0000000000..f84be999c2
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/about/certviewer.ftl
@@ -0,0 +1,122 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+certificate-viewer-certificate-section-title = Certificate
+
+## Error messages
+
+certificate-viewer-error-message = We were unable to find the certificate information, or the certificate is corrupted. Please try again.
+certificate-viewer-error-title = Something went wrong.
+
+## Certificate information labels
+
+certificate-viewer-algorithm = Algorithm
+certificate-viewer-certificate-authority = Certificate Authority
+certificate-viewer-cipher-suite = Cipher Suite
+certificate-viewer-common-name = Common Name
+certificate-viewer-email-address = Email Address
+# Variables:
+#   $firstCertName (String) - Common Name for the displayed certificate
+certificate-viewer-tab-title = Certificate for { $firstCertName }
+# Inc. means Incorporated, e.g GitHub is incorporated in Delaware
+certificate-viewer-inc-country = Inc. Country
+certificate-viewer-country = Country
+certificate-viewer-curve = Curve
+certificate-viewer-distribution-point = Distribution Point
+certificate-viewer-dns-name = DNS Name
+certificate-viewer-ip-address = IP Address
+certificate-viewer-other-name = Other Name
+certificate-viewer-exponent = Exponent
+certificate-viewer-id = ID
+certificate-viewer-key-exchange-group = Key Exchange Group
+certificate-viewer-key-id = Key ID
+certificate-viewer-key-size = Key Size
+# Inc. means Incorporated, e.g GitHub is incorporated in Delaware
+certificate-viewer-inc-locality = Inc. Locality
+certificate-viewer-locality = Locality
+certificate-viewer-location = Location
+certificate-viewer-logid = Log ID
+certificate-viewer-method = Method
+certificate-viewer-modulus = Modulus
+certificate-viewer-name = Name
+certificate-viewer-not-after = Not After
+certificate-viewer-not-before = Not Before
+certificate-viewer-organization = Organisation
+certificate-viewer-organizational-unit = Organisational Unit
+certificate-viewer-policy = Policy
+certificate-viewer-protocol = Protocol
+certificate-viewer-public-value = Public Value
+certificate-viewer-purposes = Purposes
+certificate-viewer-qualifier = Qualifier
+certificate-viewer-qualifiers = Qualifiers
+certificate-viewer-required = Required
+certificate-viewer-unsupported = &lt;unsupported&gt;
+# Inc. means Incorporated, e.g GitHub is incorporated in Delaware
+certificate-viewer-inc-state-province = Inc. State/Province/County
+certificate-viewer-state-province = State/Province/County
+certificate-viewer-sha-1 = SHA-1
+certificate-viewer-sha-256 = SHA-256
+certificate-viewer-serial-number = Serial Number
+certificate-viewer-signature-algorithm = Signature Algorithm
+certificate-viewer-signature-scheme = Signature Scheme
+certificate-viewer-timestamp = Timestamp
+certificate-viewer-value = Value
+certificate-viewer-version = Version
+certificate-viewer-business-category = Business Category
+certificate-viewer-subject-name = Subject Name
+certificate-viewer-issuer-name = Issuer Name
+certificate-viewer-validity = Validity
+certificate-viewer-subject-alt-names = Subject Alt Names
+certificate-viewer-public-key-info = Public Key Info
+certificate-viewer-miscellaneous = Miscellaneous
+certificate-viewer-fingerprints = Fingerprints
+certificate-viewer-basic-constraints = Basic Constraints
+certificate-viewer-key-usages = Key Usages
+certificate-viewer-extended-key-usages = Extended Key Usages
+certificate-viewer-ocsp-stapling = OCSP Stapling
+certificate-viewer-subject-key-id = Subject Key ID
+certificate-viewer-authority-key-id = Authority Key ID
+certificate-viewer-authority-info-aia = Authority Info (AIA)
+certificate-viewer-certificate-policies = Certificate Policies
+certificate-viewer-embedded-scts = Embedded SCTs
+certificate-viewer-crl-endpoints = CRL Endpoints
+
+# This message is used as a row header in the Miscellaneous section.
+# The associated data cell contains links to download the certificate.
+certificate-viewer-download = Download
+# This message is used to replace boolean values (true/false) in several certificate fields, e.g. Certificate Authority
+# Variables:
+#   $boolean (String) - true/false value for the specific field
+certificate-viewer-boolean =
+    { $boolean ->
+        [true] Yes
+       *[false] No
+    }
+
+## Variables:
+##   $fileName (String) - The file name to save the PEM data in, derived from the common name from the certificate being displayed.
+
+certificate-viewer-download-pem = PEM (cert)
+    .download = { $fileName }.pem
+certificate-viewer-download-pem-chain = PEM (chain)
+    .download = { $fileName }-chain.pem
+
+# The title attribute for Critical Extension icon
+certificate-viewer-critical-extension =
+    .title = This extension has been marked as critical, meaning that clients must reject the certificate if they do not understand it.
+certificate-viewer-export = Export
+    .download = { $fileName }.pem
+
+##
+
+# Label for a tab where we haven't found a better label:
+certificate-viewer-unknown-group-label = (unknown)
+
+## Labels for tabs displayed in stand-alone about:certificate page
+
+certificate-viewer-tab-mine = Your Certificates
+certificate-viewer-tab-people = People
+certificate-viewer-tab-servers = Servers
+certificate-viewer-tab-ca = Authorities
+certificate-viewer-tab-unkonwn = Unknown
diff --git a/l10n-en-GB/toolkit/toolkit/about/config.ftl b/l10n-en-GB/toolkit/toolkit/about/config.ftl
new file mode 100644
index 0000000000..d06fc251f2
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/about/config.ftl
@@ -0,0 +1,55 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+## These strings appear on the warning you see when first visiting about:config.
+
+about-config-intro-warning-title = Proceed with Caution
+about-config-intro-warning-text = Changing advanced configuration preferences can impact { -brand-short-name } performance or security.
+about-config-intro-warning-checkbox = Warn me when I attempt to access these preferences
+about-config-intro-warning-button = Accept the Risk and Continue
+
+##
+
+# This is shown on the page before searching but after the warning is accepted.
+about-config-caution-text = Changing these preferences can impact { -brand-short-name } performance or security.
+
+about-config-page-title = Advanced Preferences
+
+about-config-search-input1 =
+    .placeholder = Search preference name
+about-config-show-all = Show All
+
+about-config-show-only-modified = Show only modified preferences
+
+about-config-pref-add-button =
+    .title = Add
+about-config-pref-toggle-button =
+    .title = Toggle
+about-config-pref-edit-button =
+    .title = Edit
+about-config-pref-save-button =
+    .title = Save
+about-config-pref-reset-button =
+    .title = Reset
+about-config-pref-delete-button =
+    .title = Delete
+
+## Labels for the type selection radio buttons shown when adding preferences.
+
+about-config-pref-add-type-boolean = Boolean
+about-config-pref-add-type-number = Number
+about-config-pref-add-type-string = String
+
+## Preferences with a non-default value are differentiated visually, and at the
+## same time the state is made accessible to screen readers using an aria-label
+## that won't be visible or copied to the clipboard.
+##
+## Variables:
+##   $value (String): The full value of the preference.
+
+about-config-pref-accessible-value-default =
+    .aria-label = { $value } (default)
+about-config-pref-accessible-value-custom =
+    .aria-label = { $value } (custom)
diff --git a/l10n-en-GB/toolkit/toolkit/about/url-classifier.ftl b/l10n-en-GB/toolkit/toolkit/about/url-classifier.ftl
new file mode 100644
index 0000000000..5d518142f3
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/about/url-classifier.ftl
@@ -0,0 +1,58 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+url-classifier-title = URL Classifier Information
+url-classifier-search-title = Search
+url-classifier-search-result-title = Results
+url-classifier-search-result-uri = URI: { $uri }
+url-classifier-search-result-list = List of tables: { $list }
+url-classifier-search-input = URL
+url-classifier-search-error-invalid-url = Invalid URL
+url-classifier-search-error-no-features = No features selected
+url-classifier-search-btn = Start searching
+url-classifier-search-features = Features
+url-classifier-search-listType = List type
+url-classifier-provider-title = Provider
+url-classifier-provider = Provider
+url-classifier-provider-last-update-time = Last update time
+url-classifier-provider-next-update-time = Next update time
+url-classifier-provider-back-off-time = Back-off time
+url-classifier-provider-last-update-status = Last update status
+url-classifier-provider-update-btn = Update
+url-classifier-cache-title = Cache
+url-classifier-cache-refresh-btn = Refresh
+url-classifier-cache-clear-btn = Clear
+url-classifier-cache-table-name = Table name
+url-classifier-cache-ncache-entries = Number of negative cache entries
+url-classifier-cache-pcache-entries = Number of positive cache entries
+url-classifier-cache-show-entries = Show entries
+url-classifier-cache-entries = Cache Entries
+url-classifier-cache-prefix = Prefix
+url-classifier-cache-ncache-expiry = Negative cache expiry
+url-classifier-cache-fullhash = Full hash
+url-classifier-cache-pcache-expiry = Positive cache expiry
+url-classifier-debug-title = Debug
+url-classifier-debug-module-btn = Set Log Modules
+url-classifier-debug-file-btn = Set Log File
+url-classifier-debug-js-log-chk = Set JS Log
+url-classifier-debug-sb-modules = Safe Browsing log modules
+url-classifier-debug-modules = Current log modules
+url-classifier-debug-sbjs-modules = Safe Browsing JS log
+url-classifier-debug-file = Current log file
+
+url-classifier-trigger-update = Trigger Update
+url-classifier-not-available = N/A
+url-classifier-disable-sbjs-log = Disable Safe Browsing JS Log
+url-classifier-enable-sbjs-log = Enable Safe Browsing JS Log
+url-classifier-enabled = Enabled
+url-classifier-disabled = Disabled
+url-classifier-updating = updating
+url-classifier-cannot-update = cannot update
+url-classifier-success = success
+
+## Variables
+##   $error (string) - Error message
+
+url-classifier-update-error = update error ({ $error })
+url-classifier-download-error = download error ({ $error })
diff --git a/l10n-en-GB/toolkit/toolkit/branding/accounts.ftl b/l10n-en-GB/toolkit/toolkit/branding/accounts.ftl
new file mode 100644
index 0000000000..d01a1e149f
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/branding/accounts.ftl
@@ -0,0 +1,11 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# “Account” can be localized, “Firefox” must be treated as a brand,
+# and kept in English.
+-fxaccount-brand-name =
+    { $capitalization ->
+        [sentence] Firefox account
+       *[title] Firefox Account
+    }
diff --git a/l10n-en-GB/toolkit/toolkit/branding/brandings.ftl b/l10n-en-GB/toolkit/toolkit/branding/brandings.ftl
new file mode 100644
index 0000000000..ef3b2fdedb
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/branding/brandings.ftl
@@ -0,0 +1,45 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+## The following feature names must be treated as a brand.
+##
+## They cannot be:
+## - Transliterated.
+## - Translated.
+##
+## Declension should be avoided where possible, leaving the original
+## brand unaltered in prominent UI positions.
+##
+## For further details, consult:
+## https://mozilla-l10n.github.io/styleguides/mozilla_general/#brands-copyright-and-trademark
+
+-facebook-container-brand-name = Facebook Container
+-lockwise-brand-name = Firefox Lockwise
+-lockwise-brand-short-name = Lockwise
+-monitor-brand-name = Firefox Monitor
+-monitor-brand-short-name = Monitor
+-pocket-brand-name = Pocket
+-send-brand-name = Firefox Send
+-screenshots-brand-name = Firefox Screenshots
+-mozilla-vpn-brand-name = Mozilla VPN
+-profiler-brand-name = Firefox Profiler
+-translations-brand-name = Firefox Translations
+-focus-brand-name = Firefox Focus
+-relay-brand-name = Firefox Relay
+-relay-brand-short-name = Relay
+-fakespot-brand-name = Fakespot
+# Note the name of the website is capitalized.
+-fakespot-website-name = Fakespot.com
+# The particle "by" can be localized, "Fakespot" and "Mozilla" should not be localized or transliterated.
+-fakespot-brand-full-name = Fakespot by Mozilla
+# “Suggest” can be localized, “Firefox” must be treated as a brand
+# and kept in English.
+-firefox-suggest-brand-name = Firefox Suggest
+# ”Home" can be localized, “Firefox” must be treated as a brand
+# and kept in English.
+-firefox-home-brand-name = Firefox Home
+# View" can be localized, “Firefox” must be treated as a brand
+# and kept in English.
+-firefoxview-brand-name = Firefox View
diff --git a/l10n-en-GB/toolkit/toolkit/contentanalysis/contentanalysis.ftl b/l10n-en-GB/toolkit/toolkit/contentanalysis/contentanalysis.ftl
new file mode 100644
index 0000000000..b3c544e8c5
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/contentanalysis/contentanalysis.ftl
@@ -0,0 +1,31 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+contentanalysis-alert-title = Content Analysis
+# Variables:
+#   $content - Description of the content being warned about, such as "clipboard" or "aFile.txt"
+contentanalysis-slow-agent-notification = The Content Analysis tool is taking a long time to respond for resource “{ $content }”
+contentanalysis-slow-agent-dialog-title = Content analysis in progress
+# Variables:
+#   $content - Description of the content being warned about, such as "clipboard" or "aFile.txt"
+contentanalysis-slow-agent-dialog-body = Content Analysis is analysing resource “{ $content }”
+contentanalysis-operationtype-clipboard = clipboard
+contentanalysis-operationtype-dropped-text = dropped text
+contentanalysis-warndialogtitle = This content may be unsafe
+# Variables:
+#   $content - Description of the content being warned about, such as "clipboard" or "aFile.txt"
+contentanalysis-warndialogtext = Your organisation uses data-loss prevention software that has flagged this content as unsafe: { $content }. Use it anyway?
+contentanalysis-warndialog-response-allow = Use content
+contentanalysis-warndialog-response-deny = Cancel
+contentanalysis-notification-title = Content Analysis
+# Variables:
+#   $content - Description of the content being reported, such as "clipboard" or "aFile.txt"
+#   $response - The response received from the content analysis agent, such as "REPORT_ONLY"
+contentanalysis-genericresponse-message = Content Analysis responded with { $response } for resource: { $content }
+# Variables:
+#   $content - Description of the content being blocked, such as "clipboard" or "aFile.txt"
+contentanalysis-block-message = Your organisation uses data-loss prevention software that has blocked this content: { $content }.
+# Variables:
+#   $content - Description of the content being blocked, such as "clipboard" or "aFile.txt"
+contentanalysis-error-message = An error occurred in communicating with the data-loss prevention software. Transfer denied for resource: { $content }.
diff --git a/l10n-en-GB/toolkit/toolkit/downloads/downloadUI.ftl b/l10n-en-GB/toolkit/toolkit/downloads/downloadUI.ftl
new file mode 100644
index 0000000000..27f1006c4d
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/downloads/downloadUI.ftl
@@ -0,0 +1,51 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+download-ui-confirm-title = Cancel All Downloads?
+
+## Variables:
+##   $downloadsCount (Number): The current downloads count.
+
+download-ui-confirm-quit-cancel-downloads =
+    { $downloadsCount ->
+        [1] If you exit now, 1 download will be cancelled. Are you sure you want to exit?
+       *[other] If you exit now, { $downloadsCount } downloads will be cancelled. Are you sure you want to exit?
+    }
+download-ui-confirm-quit-cancel-downloads-mac =
+    { $downloadsCount ->
+        [1] If you quit now, 1 download will be cancelled. Are you sure you want to quit?
+       *[other] If you quit now, { $downloadsCount } downloads will be cancelled. Are you sure you want to quit?
+    }
+download-ui-dont-quit-button =
+    { PLATFORM() ->
+        [mac] Don’t Quit
+       *[other] Don’t Exit
+    }
+
+download-ui-confirm-offline-cancel-downloads =
+    { $downloadsCount ->
+        [1] If you go offline now, 1 download will be cancelled. Are you sure you want to go offline?
+       *[other] If you go offline now, { $downloadsCount } downloads will be cancelled. Are you sure you want to go offline?
+    }
+download-ui-dont-go-offline-button = Stay Online
+
+download-ui-confirm-leave-private-browsing-windows-cancel-downloads =
+    { $downloadsCount ->
+        [1] If you close all Private Browsing windows now, 1 download will be cancelled. Are you sure you want to leave Private Browsing?
+       *[other] If you close all Private Browsing windows now, { $downloadsCount } downloads will be cancelled. Are you sure you want to leave Private Browsing?
+    }
+download-ui-dont-leave-private-browsing-button = Stay in Private Browsing
+
+download-ui-cancel-downloads-ok =
+    { $downloadsCount ->
+        [1] Cancel 1 Download
+       *[other] Cancel { $downloadsCount } Downloads
+    }
+
+##
+
+download-ui-file-executable-security-warning-title = Open Executable File?
+# Variables:
+#   $executable (String): The executable file to be opened.
+download-ui-file-executable-security-warning = “{ $executable }” is an executable file. Executable files may contain viruses or other malicious code that could harm your computer. Use caution when opening this file. Are you sure you want to launch “{ $executable }”?
diff --git a/l10n-en-GB/toolkit/toolkit/downloads/downloadUtils.ftl b/l10n-en-GB/toolkit/toolkit/downloads/downloadUtils.ftl
new file mode 100644
index 0000000000..889a7de3ec
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/downloads/downloadUtils.ftl
@@ -0,0 +1,106 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+## Variables:
+## $timeValue (number) - Number of units of time
+
+# Short form for seconds
+download-utils-short-seconds =
+    { $timeValue ->
+        [one] s
+       *[other] s
+    }
+# Short form for minutes
+download-utils-short-minutes =
+    { $timeValue ->
+        [one] m
+       *[other] m
+    }
+# Short form for hours
+download-utils-short-hours =
+    { $timeValue ->
+        [one] h
+       *[other] h
+    }
+# Short form for days
+download-utils-short-days =
+    { $timeValue ->
+        [one] d
+       *[other] d
+    }
+
+##
+
+# — is the "em dash" (long dash)
+# example: 4 minutes left — 1.1 of 11.1 GB (2.2 MB/sec)
+# Variables:
+#   $timeLeft (String): time left.
+#   $transfer (String): transfer progress.
+#   $rate (String): rate number.
+#   $unit (String): rate unit.
+download-utils-status = { $timeLeft } — { $transfer } ({ $rate } { $unit }/sec)
+# If download speed is a JavaScript Infinity value, this phrase is used
+# — is the "em dash" (long dash)
+# example: 4 minutes left — 1.1 of 11.1 GB (Really fast)
+# Variables:
+#   $timeLeft (String): time left.
+#   $transfer (String): transfer progress.
+download-utils-status-infinite-rate = { $timeLeft } — { $transfer } (Really fast)
+# — is the "em dash" (long dash)
+# example: 4 minutes left — 1.1 of 11.1 GB
+# Variables:
+#   $timeLeft (String): time left.
+#   $transfer (String): transfer progress.
+download-utils-status-no-rate = { $timeLeft } — { $transfer }
+
+download-utils-bytes = bytes
+download-utils-kilobyte = kB
+download-utils-megabyte = MB
+download-utils-gigabyte = GB
+
+# example: 1.1 of 333 MB
+# Variables:
+#   $progress (String): progress number.
+#   $total (String): total number.
+#   $totalUnits (String): total unit.
+download-utils-transfer-same-units = { $progress } of { $total } { $totalUnits }
+# example: 11.1 MB of 3.3 GB
+# Variables:
+#   $progress (String): progress number.
+#   $progressUnits (String): progress unit.
+#   $total (String): total number.
+#   $totalUnits (String): total unit.
+download-utils-transfer-diff-units = { $progress } { $progressUnits } of { $total } { $totalUnits }
+# example: 111 KB
+# Variables:
+#   $progress (String): progress number.
+#   $progressUnits (String): unit.
+download-utils-transfer-no-total = { $progress } { $progressUnits }
+
+# examples: 1m; 11h
+# Variables:
+#   $time (String): time number.
+#   $unit (String): time unit.
+download-utils-time-pair = { $time }{ $unit }
+# examples: 1m left; 11h left
+# Variables:
+#   $time (String): time left, including a unit
+download-utils-time-left-single = { $time } left
+# examples: 11h 2m left; 1d 22h left
+# Variables:
+#   $time1 (String): time left, including a unit
+#   $time2 (String): smaller measure of time left, including a unit
+download-utils-time-left-double = { $time1 } { $time2 } left
+download-utils-time-few-seconds = A few seconds left
+download-utils-time-unknown = Unknown time left
+
+# Variables:
+#   $scheme (String): URI scheme like data: jar: about:
+download-utils-done-scheme = { $scheme } resource
+# Special case of done-scheme for file:
+# This is used as an eTLD replacement for local files, so make it lower case
+download-utils-done-file-scheme = local file
+
+# Displayed time for files finished yesterday
+download-utils-yesterday = Yesterday
diff --git a/l10n-en-GB/toolkit/toolkit/featuregates/features.ftl b/l10n-en-GB/toolkit/toolkit/featuregates/features.ftl
new file mode 100644
index 0000000000..cc090520d1
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/featuregates/features.ftl
@@ -0,0 +1,58 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# The title of the experiment should be kept in English as it may be referenced
+# by various online articles and is technical in nature.
+experimental-features-css-masonry2 =
+    .label = CSS: Masonry Layout
+experimental-features-css-masonry-description = Enables support for the experimental CSS Masonry Layout feature. See the <a data-l10n-name="explainer">explainer</a> for a high level description of the feature. To provide feedback, please comment in <a data-l10n-name="w3c-issue">this GitHub issue</a> or <a data-l10n-name="bug">this bug</a>.
+
+# The title of the experiment should be kept in English as it may be referenced
+# by various online articles and is technical in nature.
+experimental-features-web-gpu2 =
+    .label = Web API: WebGPU
+experimental-features-web-gpu-description3 = The <a data-l10n-name="wikipedia-webgpu">WebGPU API</a> provides low-level support for performing computation and graphics rendering using the <a data-l10n-name="wikipedia-gpu">Graphics Processing Unit (GPU)</a> of the user’s device or computer. The first version of the <a data-l10n-name="spec">specification</a> is nearing finalisation. See <a data-l10n-name="bugzilla">bug 1616739</a> for more details.
+
+# The title of the experiment should be kept in English as it may be referenced
+# by various online articles and is technical in nature.
+experimental-features-media-jxl =
+    .label = Media: JPEG XL
+experimental-features-media-jxl-description = With this feature enabled, { -brand-short-name } supports the JPEG XL (JXL) format. This is an enhanced image file format that supports lossless transition from traditional JPEG files. See <a data-l10n-name="bugzilla">bug 1539075</a> for more details.
+
+experimental-features-devtools-compatibility-panel =
+    .label = Developer Tools: Compatibility Panel
+experimental-features-devtools-compatibility-panel-description = A side panel for the Page Inspector that shows you information detailing your app’s cross-browser compatibility status. See <a data-l10n-name="bugzilla">bug 1584464</a> for more details.
+
+
+# Do not translate 'SameSite', 'Lax' and 'None'.
+experimental-features-cookie-samesite-none-requires-secure2 =
+    .label = Cookies: SameSite=None requires secure attribute
+experimental-features-cookie-samesite-none-requires-secure2-description = Cookies with “SameSite=None” attribute require the secure attribute. This feature requires “Cookies: SameSite=Lax by default”.
+
+# about:home should be kept in English, as it refers to the the URI for
+# the internal default home page.
+experimental-features-abouthome-startup-cache =
+    .label = about:home startup cache
+experimental-features-abouthome-startup-cache-description = A cache for the initial about:home document that is loaded by default at startup. The purpose of the cache is to improve startup performance.
+
+# "Service Worker" is an API name and is usually not translated.
+experimental-features-devtools-serviceworker-debugger-support =
+    .label = Developer Tools: Service Worker debugging
+# "Service Worker" is an API name and is usually not translated.
+experimental-features-devtools-serviceworker-debugger-support-description = Enables experimental support for Service Workers in the Debugger panel. This feature may slow the Developer Tools down and increase memory consumption.
+
+# WebRTC global mute toggle controls
+experimental-features-webrtc-global-mute-toggles =
+    .label = WebRTC Global Mute Toggles
+experimental-features-webrtc-global-mute-toggles-description = Add controls to the WebRTC global sharing indicator that allow users to globally mute their microphone and camera feeds.
+
+# JS JIT Warp project
+experimental-features-js-warp =
+    .label = JavaScript JIT: Warp
+experimental-features-js-warp-description = Enable Warp, a project to improve JavaScript performance and memory usage.
+
+# Search during IME
+experimental-features-ime-search =
+    .label = Address Bar: show results during IME composition
+experimental-features-ime-search-description = An IME (Input Method Editor) is a tool that allows you to enter complex symbols, such as those used in East Asian or Indic written languages, using a standard keyboard. Enabling this experiment will keep the address bar panel open, showing search results and suggestions, while using IME to input text. Note that the IME might display a panel that covers the address bar results, therefore this preference is only suggested for IME not using this type of panel.
diff --git a/l10n-en-GB/toolkit/toolkit/formautofill/formAutofill.ftl b/l10n-en-GB/toolkit/toolkit/formautofill/formAutofill.ftl
new file mode 100644
index 0000000000..81f6b1e75e
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/formautofill/formAutofill.ftl
@@ -0,0 +1,49 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+## OS Prompt Dialog
+
+# The macos string is preceded by the operating system (macOS) with "Firefox is trying to ",
+# and has a period added to its end. Make sure to test in your locale.
+autofill-use-payment-method-os-prompt-macos = use stored payment method information
+autofill-use-payment-method-os-prompt-windows = { -brand-short-name } is trying to use stored payment method information. Confirm access to this Windows account below.
+autofill-use-payment-method-os-prompt-other = { -brand-short-name } is trying to use stored payment method information.
+# In macOS, this string is preceded by the operating system with "Firefox is trying to ",
+# and has a period added to its end. Make sure to test in your locale.
+autofill-edit-payment-method-os-prompt-macos = show stored payment method information
+autofill-edit-payment-method-os-prompt-windows = { -brand-short-name } is trying to show stored payment method information. Confirm access to this Windows account below.
+autofill-edit-payment-method-os-prompt-other = { -brand-short-name } is trying to show stored payment method information.
+# The links lead users to Form Autofill browser preferences.
+autofill-options-link = Form Autofill Options
+autofill-options-link-osx = Form Autofill Preferences
+
+## The credit card capture doorhanger
+
+# If Sync is enabled and credit card sync is available,
+# this checkbox is displayed on the doorhanger shown when saving credit card.
+credit-card-doorhanger-credit-cards-sync-checkbox = Synchronise all saved cards across my devices
+# Used on the doorhanger when users submit payment with credit card.
+credit-card-save-doorhanger-header = Securely save this card?
+credit-card-save-doorhanger-description = { -brand-short-name } encrypts your card number. Your security code won’t be saved.
+credit-card-capture-save-button =
+    .label = Save
+    .accessKey = S
+credit-card-capture-cancel-button =
+    .label = Not now
+    .accessKey = w
+credit-card-capture-never-save-button =
+    .label = Never save cards
+    .accessKey = N
+
+# Used on the doorhanger when an credit card change is detected.
+
+credit-card-update-doorhanger-header = Update card?
+credit-card-update-doorhanger-description = Card to update:
+credit-card-capture-save-new-button =
+    .label = Save as new card
+    .accessKey = c
+credit-card-capture-update-button =
+    .label = Update existing card
+    .accessKey = U
diff --git a/l10n-en-GB/toolkit/toolkit/global/alert.ftl b/l10n-en-GB/toolkit/toolkit/global/alert.ftl
new file mode 100644
index 0000000000..f0061d4446
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/global/alert.ftl
@@ -0,0 +1,12 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+alert-close =
+    .tooltiptext = Close this notification
+alert-settings-title =
+    .tooltiptext = Settings
+
+## Reminder Notifications
+
+notification-default-dismiss = Dismiss
diff --git a/l10n-en-GB/toolkit/toolkit/global/appPicker.ftl b/l10n-en-GB/toolkit/toolkit/global/appPicker.ftl
new file mode 100644
index 0000000000..0a85c9b839
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/global/appPicker.ftl
@@ -0,0 +1,10 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+app-picker-browse-button =
+    .buttonlabelextra2 = Browse…
+app-picker-send-msg =
+    .value = Send this item to:
+app-picker-no-app-found =
+    .value = No applications were found for this file type.
diff --git a/l10n-en-GB/toolkit/toolkit/global/browser-utils.ftl b/l10n-en-GB/toolkit/toolkit/global/browser-utils.ftl
new file mode 100644
index 0000000000..fa3718b652
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/global/browser-utils.ftl
@@ -0,0 +1,11 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# Used for data: URLs where we don't have any useful origin information
+browser-utils-url-data = (data)
+
+# Used for extension URLs
+# Variables:
+#   $extension (string) - Name of the extension that generated the URL
+browser-utils-url-extension = Extension ({ $extension })
diff --git a/l10n-en-GB/toolkit/toolkit/global/commonDialog.ftl b/l10n-en-GB/toolkit/toolkit/global/commonDialog.ftl
new file mode 100644
index 0000000000..4b7c32122c
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/global/commonDialog.ftl
@@ -0,0 +1,21 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+common-dialog-title-null = This page says
+common-dialog-title-system = { -brand-short-name }
+# Title displayed when the origin of a web dialog is unknown.
+common-dialog-title-unknown = Unknown
+# An indicator showing that Firefox is waiting for an operation to finish
+common-dialog-spinner =
+    .alt = Busy
+common-dialog-username =
+    .value = Username
+common-dialog-password =
+    .value = Password
+common-dialog-copy-cmd =
+    .label = Copy
+    .accesskey = C
+common-dialog-select-all-cmd =
+    .label = Select All
+    .accesskey = A
diff --git a/l10n-en-GB/toolkit/toolkit/global/contextual-identity.ftl b/l10n-en-GB/toolkit/toolkit/global/contextual-identity.ftl
new file mode 100644
index 0000000000..6b5a9e0bad
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/global/contextual-identity.ftl
@@ -0,0 +1,29 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+## Names of the default containers in Firefox.
+## See https://support.mozilla.org/kb/how-use-firefox-containers
+
+user-context-personal =
+    .label = Personal
+    .accesskey = P
+user-context-work =
+    .label = Work
+    .accesskey = W
+user-context-banking =
+    .label = Banking
+    .accesskey = B
+user-context-shopping =
+    .label = Shopping
+    .accesskey = S
+
+##
+
+user-context-none =
+    .label = No Container
+    .accesskey = N
+user-context-manage-containers =
+    .label = Manage containers
+    .accesskey = o
diff --git a/l10n-en-GB/toolkit/toolkit/global/cookieBannerHandling.ftl b/l10n-en-GB/toolkit/toolkit/global/cookieBannerHandling.ftl
new file mode 100644
index 0000000000..9e6ac1d039
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/global/cookieBannerHandling.ftl
@@ -0,0 +1,5 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+cookie-banner-handled-webconsole = { -brand-shorter-name } handled a cookie banner on behalf of the user.
diff --git a/l10n-en-GB/toolkit/toolkit/global/createProfileWizard.ftl b/l10n-en-GB/toolkit/toolkit/global/createProfileWizard.ftl
new file mode 100644
index 0000000000..35ca78fe3b
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/global/createProfileWizard.ftl
@@ -0,0 +1,53 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+create-profile-window2 =
+    .title = Create Profile Wizard
+    .style = min-width: 45em; min-height: 32em;
+
+## First wizard page
+
+create-profile-first-page-header2 =
+    { PLATFORM() ->
+        [macos] Introduction
+       *[other] Welcome to the { create-profile-window2.title }
+    }
+
+profile-creation-explanation-1 = { -brand-short-name } stores information about your settings and preferences in your personal profile.
+
+profile-creation-explanation-2 = If you are sharing this copy of { -brand-short-name } with other users, you can use profiles to keep each user’s information separate. To do this, each user should create his or her own profile.
+
+profile-creation-explanation-3 = If you are the only person using this copy of { -brand-short-name }, you must have at least one profile. If you would like, you can create multiple profiles for yourself to store different sets of settings and preferences. For example, you may want to have separate profiles for business and personal use.
+
+profile-creation-explanation-4 =
+    { PLATFORM() ->
+        [macos] To begin creating your profile, click Continue.
+       *[other] To begin creating your profile, click Next.
+    }
+
+## Second wizard page
+
+create-profile-last-page-header2 =
+    { PLATFORM() ->
+        [macos] Conclusion
+       *[other] Completing the { create-profile-window2.title }
+    }
+
+profile-creation-intro = If you create several profiles you can tell them apart by the profile names. You may use the name provided here or use one of your own.
+
+profile-prompt = Enter new profile name:
+    .accesskey = E
+
+profile-default-name =
+    .value = Default User
+
+profile-directory-explanation = Your user settings, preferences and other user-related data will be stored in:
+
+create-profile-choose-folder =
+    .label = Choose Folder…
+    .accesskey = C
+
+create-profile-use-default =
+    .label = Use Default Folder
+    .accesskey = U
diff --git a/l10n-en-GB/toolkit/toolkit/global/cspErrors.ftl b/l10n-en-GB/toolkit/toolkit/global/cspErrors.ftl
new file mode 100644
index 0000000000..7980bd7e8e
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/global/cspErrors.ftl
@@ -0,0 +1,32 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# Variables:
+#   $directive (String): the name of a CSP directive, such as "script-src".
+csp-error-missing-directive = Policy is missing a required ‘{ $directive }’ directive
+
+# Variables:
+#   $directive (String): the name of a CSP directive, such as "script-src".
+#   $keyword (String): the name of a CSP keyword, usually 'unsafe-inline'.
+csp-error-illegal-keyword = ‘{ $directive }’ directive contains a forbidden { $keyword } keyword
+
+# Variables:
+#   $directive (String): the name of a CSP directive, such as "script-src".
+#   $scheme (String): a protocol name, such as "http", which appears as "http:", as it would in a URL.
+csp-error-illegal-protocol = ‘{ $directive }’ directive contains a forbidden { $scheme }: protocol source
+
+# Variables:
+#   $directive (String): the name of a CSP directive, such as "script-src".
+#   $scheme (String): a protocol name, such as "http", which appears as "http:", as it would in a URL.
+csp-error-missing-host = { $scheme }: protocol requires a host in ‘{ $directive }’ directives
+
+# Variables:
+#   $directive (String): the name of a CSP directive, such as "script-src".
+#   $source (String): the name of a CSP source, usually 'self'.
+csp-error-missing-source = ‘{ $directive }’ must include the source { $source }
+
+# Variables:
+#   $directive (String): the name of a CSP directive, such as "script-src".
+#   $scheme (String): a protocol name, such as "http", which appears as "http:", as it would in a URL.
+csp-error-illegal-host-wildcard = { $scheme }: wildcard sources in ‘{ $directive }’ directives must include at least one non-generic sub-domain (e.g., *.example.com rather than *.com)
diff --git a/l10n-en-GB/toolkit/toolkit/global/datepicker.ftl b/l10n-en-GB/toolkit/toolkit/global/datepicker.ftl
new file mode 100644
index 0000000000..1cb16ad16c
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/global/datepicker.ftl
@@ -0,0 +1,50 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+### Datepicker - Dialog for default HTML's <input type="date">
+
+
+## These labels are used by screenreaders and other assistive technology
+## to indicate the purpose of a date picker calendar and a month-year selection
+## spinner dialogs for HTML's <input type="date">
+
+date-picker-label =
+    .aria-label = Choose a date
+date-spinner-label =
+    .aria-label = Choose a month and a year
+
+## Text of the clear button
+
+date-picker-clear-button = Clear
+
+## These labels are used by screenreaders and other assistive technology
+## to indicate the purpose of buttons that leaf through months of a calendar
+
+date-picker-previous =
+    .aria-label = Previous month
+date-picker-next =
+    .aria-label = Next month
+
+## These labels are used by screenreaders and other assistive technology
+## to indicate the type of a value/unit that is being selected within a
+## Month/Year date spinner dialogs on a datepicker calendar dialog
+
+date-spinner-month =
+    .aria-label = Month
+date-spinner-year =
+    .aria-label = Year
+
+## These labels are used by screenreaders and other assistive technology
+## to indicate the purpose of buttons that leaf through either months
+## or years of a Month/Year date spinner on a datepicker calendar dialog
+
+date-spinner-month-previous =
+    .aria-label = Previous month
+date-spinner-month-next =
+    .aria-label = Next month
+date-spinner-year-previous =
+    .aria-label = Previous year
+date-spinner-year-next =
+    .aria-label = Next year
diff --git a/l10n-en-GB/toolkit/toolkit/global/datetimebox.ftl b/l10n-en-GB/toolkit/toolkit/global/datetimebox.ftl
new file mode 100644
index 0000000000..60a2bf8147
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/global/datetimebox.ftl
@@ -0,0 +1,42 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+## Placeholders for date and time inputs
+
+datetime-year-placeholder = yyyy
+datetime-month-placeholder = mm
+datetime-day-placeholder = dd
+datetime-time-placeholder = --
+
+## Field labels for input type=date
+
+datetime-year =
+    .aria-label = Year
+datetime-month =
+    .aria-label = Month
+datetime-day =
+    .aria-label = Day
+
+## Field labels for input type=time
+
+datetime-hour =
+    .aria-label = Hours
+datetime-minute =
+    .aria-label = Minutes
+datetime-second =
+    .aria-label = Seconds
+datetime-millisecond =
+    .aria-label = Milliseconds
+datetime-dayperiod =
+    .aria-label = AM/PM
+
+## Calendar button for input type=date
+
+
+# This label is used by screenreaders and other assistive technology
+# to indicate the purpose of a toggle button inside of the <input type="date">
+# field that opens/closes a date picker calendar dialog
+
+datetime-calendar =
+    .aria-label = Calendar
diff --git a/l10n-en-GB/toolkit/toolkit/global/extensionPermissions.ftl b/l10n-en-GB/toolkit/toolkit/global/extensionPermissions.ftl
new file mode 100644
index 0000000000..1675f6e19e
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/global/extensionPermissions.ftl
@@ -0,0 +1,33 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+## Extension permission description keys are derived from permission names.
+## Permissions for which the message has been changed and the key updated
+## must have a corresponding entry in the `PERMISSION_L10N_ID_OVERRIDES` map.
+
+webext-perms-description-bookmarks = Read and modify bookmarks
+webext-perms-description-browserSettings = Read and modify browser settings
+webext-perms-description-browsingData = Clear recent browsing history, cookies, and related data
+webext-perms-description-clipboardRead = Get data from the clipboard
+webext-perms-description-clipboardWrite = Input data to the clipboard
+webext-perms-description-declarativeNetRequest = Block content on any page
+webext-perms-description-declarativeNetRequestFeedback = Read your browsing history
+webext-perms-description-devtools = Extend developer tools to access your data in open tabs
+webext-perms-description-downloads = Download files and read and modify the browser’s download history
+webext-perms-description-downloads-open = Open files downloaded to your computer
+webext-perms-description-find = Read the text of all open tabs
+webext-perms-description-geolocation = Access your location
+webext-perms-description-history = Access browsing history
+webext-perms-description-management = Monitor extension usage and manage themes
+webext-perms-description-nativeMessaging = Exchange messages with programs other than { -brand-short-name }
+webext-perms-description-notifications = Display notifications to you
+webext-perms-description-pkcs11 = Provide cryptographic authentication services
+webext-perms-description-privacy = Read and modify privacy settings
+webext-perms-description-proxy = Control browser proxy settings
+webext-perms-description-sessions = Access recently closed tabs
+webext-perms-description-tabs = Access browser tabs
+webext-perms-description-tabHide = Hide and show browser tabs
+webext-perms-description-topSites = Access browsing history
+webext-perms-description-webNavigation = Access browser activity during navigation
diff --git a/l10n-en-GB/toolkit/toolkit/global/extensions.ftl b/l10n-en-GB/toolkit/toolkit/global/extensions.ftl
new file mode 100644
index 0000000000..e04ebc11ad
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/global/extensions.ftl
@@ -0,0 +1,112 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+## Headers used in the webextension permissions dialog,
+## See https://bug1308309.bmoattachments.org/attachment.cgi?id=8814612
+## for an example of the full dialog.
+## Note: This string will be used as raw markup. Avoid characters like <, >, &
+## Variables:
+##   $extension (String): replaced with the localized name of the extension.
+
+webext-perms-header = Add { $extension }?
+webext-perms-header-with-perms = Add { $extension }? This extension will have permission to:
+webext-perms-header-unsigned = Add { $extension }? This extension is unverified. Malicious extensions can steal your private information or compromise your computer. Only add it if you trust the source.
+webext-perms-header-unsigned-with-perms = Add { $extension }? This extension is unverified. Malicious extensions can steal your private information or compromise your computer. Only add it if you trust the source. This extension will have permission to:
+webext-perms-sideload-header = { $extension } added
+webext-perms-optional-perms-header = { $extension } requests additional permissions.
+
+##
+
+webext-perms-add =
+    .label = Add
+    .accesskey = A
+webext-perms-cancel =
+    .label = Cancel
+    .accesskey = C
+
+webext-perms-sideload-text = Another program on your computer installed an add-on that may affect your browser. Please review this add-on’s permissions requests and choose to Enable or Cancel (to leave it disabled).
+webext-perms-sideload-text-no-perms = Another program on your computer installed an add-on that may affect your browser. Please choose to Enable or Cancel (to leave it disabled).
+webext-perms-sideload-enable =
+    .label = Enable
+    .accesskey = E
+webext-perms-sideload-cancel =
+    .label = Cancel
+    .accesskey = C
+
+# Variables:
+#   $extension (String): replaced with the localized name of the extension.
+webext-perms-update-text = { $extension } has been updated. You must approve new permissions before the updated version will install. Choosing “Cancel” will maintain your current extension version. This extension will have permission to:
+webext-perms-update-accept =
+    .label = Update
+    .accesskey = U
+
+webext-perms-optional-perms-list-intro = It wants to:
+webext-perms-optional-perms-allow =
+    .label = Allow
+    .accesskey = A
+webext-perms-optional-perms-deny =
+    .label = Deny
+    .accesskey = D
+
+webext-perms-host-description-all-urls = Access your data for all web sites
+
+# Variables:
+#   $domain (String): will be replaced by the DNS domain for which a webextension is requesting access (e.g., mozilla.org)
+webext-perms-host-description-wildcard = Access your data for sites in the { $domain } domain
+
+# Variables:
+#   $domainCount (Number): Integer indicating the number of additional
+#     hosts for which this webextension is requesting permission.
+webext-perms-host-description-too-many-wildcards =
+    { $domainCount ->
+        [one] Access your data in { $domainCount } other domain
+       *[other] Access your data in { $domainCount } other domains
+    }
+# Variables:
+#   $domain (String): will be replaced by the DNS host name for which a webextension is requesting access (e.g., www.mozilla.org)
+webext-perms-host-description-one-site = Access your data for { $domain }
+
+# Variables:
+#   $domainCount (Number): Integer indicating the number of additional
+#     hosts for which this webextension is requesting permission.
+webext-perms-host-description-too-many-sites =
+    { $domainCount ->
+        [one] Access your data on { $domainCount } other site
+       *[other] Access your data on { $domainCount } other sites
+    }
+
+## Headers used in the webextension permissions dialog for synthetic add-ons.
+## The part of the string describing what privileges the extension gives should be consistent
+## with the value of webext-site-perms-description-gated-perms-{sitePermission}.
+## Note, this string will be used as raw markup. Avoid characters like <, >, &
+## Variables:
+##   $hostname (String): the hostname of the site the add-on is being installed from.
+
+webext-site-perms-header-with-gated-perms-midi = This add-on gives { $hostname } access to your MIDI devices.
+webext-site-perms-header-with-gated-perms-midi-sysex = This add-on gives { $hostname } access to your MIDI devices (with SysEx support).
+
+##
+
+# This string is used as description in the webextension permissions dialog for synthetic add-ons.
+# Note, the empty line is used to create a line break between the two sections.
+# Note, this string will be used as raw markup. Avoid characters like <, >, &
+webext-site-perms-description-gated-perms-midi =
+    These are usually plug-in devices like audio synthesisers, but might also be built into your computer.
+    
+    Web sites are normally not allowed to access MIDI devices. Improper usage could cause damage or compromise security.
+
+## Headers used in the webextension permissions dialog.
+## Note: This string will be used as raw markup. Avoid characters like <, >, &
+## Variables:
+##   $extension (String): replaced with the localized name of the extension being installed.
+##   $hostname (String): will be replaced by the DNS host name for which a webextension enables permissions.
+
+webext-site-perms-header-with-perms = Add { $extension }? This extension grants the following capabilities to { $hostname }:
+webext-site-perms-header-unsigned-with-perms = Add { $extension }? This extension is unverified. Malicious extensions can steal your private information or compromise your computer. Only add it if you trust the source. This extension grants the following capabilities to { $hostname }:
+
+## These should remain in sync with permissions.NAME.label in sitePermissions.properties
+
+webext-site-perms-midi = Access MIDI devices
+webext-site-perms-midi-sysex = Access MIDI devices with SysEx support
diff --git a/l10n-en-GB/toolkit/toolkit/global/handlerDialog.ftl b/l10n-en-GB/toolkit/toolkit/global/handlerDialog.ftl
new file mode 100644
index 0000000000..20cc932f55
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/global/handlerDialog.ftl
@@ -0,0 +1,70 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+## Permission Dialog
+## Variables:
+##  $host (string) - The hostname that is initiating the request
+##  $scheme (string) - The type of link that's being opened.
+##  $appName (string) - Name of the application that will be opened.
+##  $extension (string) - Name of extension that initiated the request
+
+permission-dialog-description = Allow this site to open the { $scheme } link?
+permission-dialog-description-file = Allow this file to open the { $scheme } link?
+permission-dialog-description-host = Allow { $host } to open the { $scheme } link?
+permission-dialog-description-extension = Allow the extension { $extension } to open the { $scheme } link?
+permission-dialog-description-app = Allow this site to open the { $scheme } link with { $appName }?
+permission-dialog-description-host-app = Allow { $host } to open the { $scheme } link with { $appName }?
+permission-dialog-description-file-app = Allow this file to open the { $scheme } link with { $appName }?
+permission-dialog-description-extension-app = Allow the extension { $extension } to open the { $scheme } link with { $appName }?
+permission-dialog-description-system-app = Open the { $scheme } link with { $appName }?
+permission-dialog-description-system-noapp = Open the { $scheme } link?
+
+## Please keep the emphasis around the hostname and scheme (ie the
+## `<strong>` HTML tags). Please also keep the hostname as close to the start
+## of the sentence as your language's grammar allows.
+## Variables:
+##  $host (string) - The hostname that is initiating the request
+##  $scheme (string) - The type of link that's being opened.
+
+permission-dialog-remember = Always allow <strong>{ $host }</strong> to open <strong>{ $scheme }</strong> links
+permission-dialog-remember-file = Always allow this file to open <strong>{ $scheme }</strong> links
+permission-dialog-remember-extension = Always allow this extension to open <strong>{ $scheme }</strong> links
+
+##
+
+permission-dialog-btn-open-link =
+    .label = Open Link
+    .accessKey = O
+permission-dialog-btn-choose-app =
+    .label = Choose Application
+    .accessKey = A
+permission-dialog-unset-description = You’ll need to choose an application.
+permission-dialog-set-change-app-link = Choose a different application.
+
+## Chooser dialog
+## Variables:
+##  $scheme (string) - The type of link that's being opened.
+
+chooser-window =
+    .title = Choose Application
+    .style = min-width: 26em; min-height: 26em;
+chooser-dialog =
+    .buttonlabelaccept = Open Link
+    .buttonaccesskeyaccept = O
+chooser-dialog-description = Choose an application to open the { $scheme } link.
+# Please keep the emphasis around the scheme (ie the `<strong>` HTML tags).
+chooser-dialog-remember = Always use this application to open <strong>{ $scheme }</strong> links
+chooser-dialog-remember-extra =
+    { PLATFORM() ->
+        [windows] This can be changed in { -brand-short-name }’s options.
+       *[other] This can be changed in { -brand-short-name }’s preferences.
+    }
+choose-other-app-description = Choose other Application
+choose-app-btn =
+    .label = Choose…
+    .accessKey = C
+choose-other-app-window-title = Another Application…
+# Displayed under the name of a protocol handler in the Launch Application dialog.
+choose-dialog-privatebrowsing-disabled = Disabled in Private Windows
diff --git a/l10n-en-GB/toolkit/toolkit/global/htmlForm.ftl b/l10n-en-GB/toolkit/toolkit/global/htmlForm.ftl
new file mode 100644
index 0000000000..690b0c4557
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/global/htmlForm.ftl
@@ -0,0 +1,14 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# This string is shown at the end of the tooltip text for
+# <input type='file' multiple> when there are more than 21 files selected
+# (when we will only list the first 20, plus an "and X more" line).
+# Variables:
+#   $fileCount (Number): The number of remaining files.
+input-file-and-more-files =
+    { $fileCount ->
+        [one] and one more
+       *[other] and { $fileCount } more
+    }
diff --git a/l10n-en-GB/toolkit/toolkit/global/mozCard.ftl b/l10n-en-GB/toolkit/toolkit/global/mozCard.ftl
new file mode 100644
index 0000000000..6fbe8159b2
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/global/mozCard.ftl
@@ -0,0 +1,3 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
diff --git a/l10n-en-GB/toolkit/toolkit/global/mozFiveStar.ftl b/l10n-en-GB/toolkit/toolkit/global/mozFiveStar.ftl
new file mode 100644
index 0000000000..79e408238b
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/global/mozFiveStar.ftl
@@ -0,0 +1,9 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# The rating out of 5 stars.
+# Variables:
+#   $rating (number) - A number between 0 and 5. The translation should show at most one digit after the comma.
+moz-five-star-rating =
+    .title = Rated { NUMBER($rating, maximumFractionDigits: 1) } out of 5
diff --git a/l10n-en-GB/toolkit/toolkit/global/mozMessageBar.ftl b/l10n-en-GB/toolkit/toolkit/global/mozMessageBar.ftl
new file mode 100644
index 0000000000..de32a2a88d
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/global/mozMessageBar.ftl
@@ -0,0 +1,15 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+moz-message-bar-icon-info =
+    .alt = Info
+moz-message-bar-icon-warning =
+    .alt = Warning
+moz-message-bar-icon-success =
+    .alt = Success
+moz-message-bar-icon-error =
+    .alt = Error
+moz-message-bar-close-button =
+    .aria-label = Close
+    .title = Close
diff --git a/l10n-en-GB/toolkit/toolkit/global/mozSupportLink.ftl b/l10n-en-GB/toolkit/toolkit/global/mozSupportLink.ftl
new file mode 100644
index 0000000000..0cfaf42816
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/global/mozSupportLink.ftl
@@ -0,0 +1,5 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+moz-support-link-text = Learn more
diff --git a/l10n-en-GB/toolkit/toolkit/global/notification.ftl b/l10n-en-GB/toolkit/toolkit/global/notification.ftl
new file mode 100644
index 0000000000..82bd27fd97
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/global/notification.ftl
@@ -0,0 +1,16 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+notification-learnmore-default-label =
+    .value = Learn more
+
+# This label is read by screen readers when focusing the close button for an
+# "infobar" (message shown when for example a popup is blocked),
+# and shown when hovering over the button
+notification-close-button =
+    .aria-label = Close
+    .title = Close
+
+close-notification-message =
+    .tooltiptext = Close this message
diff --git a/l10n-en-GB/toolkit/toolkit/global/popupnotification.ftl b/l10n-en-GB/toolkit/toolkit/global/popupnotification.ftl
new file mode 100644
index 0000000000..bf353bcd6f
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/global/popupnotification.ftl
@@ -0,0 +1,10 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+popup-notification-learn-more = Learn more
+popup-notification-more-actions-button =
+    .aria-label = More actions
+popup-notification-default-button =
+    .label = OK!
+    .accesskey = O
diff --git a/l10n-en-GB/toolkit/toolkit/global/processTypes.ftl b/l10n-en-GB/toolkit/toolkit/global/processTypes.ftl
new file mode 100644
index 0000000000..be45ec8832
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/global/processTypes.ftl
@@ -0,0 +1,61 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+##
+## Localization for remote types defined in RemoteType.h
+##
+
+process-type-web = Web Content
+
+# process used to run privileged about pages,
+# such as about:home
+process-type-privilegedabout = Privileged About
+
+# process used to run privileged mozilla pages,
+# such as accounts.firefox.com
+process-type-privilegedmozilla = Privileged Mozilla Content
+
+process-type-extension = Extension
+
+# process used to open file:// URLs
+process-type-file = Local File
+
+# process used to isolate a webpage from other web pages
+# to improve security
+process-type-webisolated = Isolated Web Content
+
+# process used to isolate a ServiceWorker to improve
+# performance
+process-type-webserviceworker = Isolated Service Worker
+
+# process preallocated; may change to other types
+process-type-prealloc = Preallocated
+
+##
+## Localization for Gecko process types defined in GeckoProcessTypes.h
+##
+
+process-type-default = Main
+process-type-tab = Tab
+
+# process used to communicate with the GPU for
+# graphics acceleration
+process-type-gpu = GPU
+
+# process used to perform network operations
+process-type-socket = Socket
+
+# process used to decode media
+process-type-rdd = RDD
+
+# process used to run some IPC actor in their own sandbox
+process-type-utility = Sandboxed IPC Actor
+
+##
+## Other
+##
+
+# fallback
+process-type-unknown = Unknown
diff --git a/l10n-en-GB/toolkit/toolkit/global/profileDowngrade.ftl b/l10n-en-GB/toolkit/toolkit/global/profileDowngrade.ftl
new file mode 100644
index 0000000000..a3f3d64d4f
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/global/profileDowngrade.ftl
@@ -0,0 +1,18 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+profiledowngrade-window2 =
+    .title = You’ve launched an older version of { -brand-product-name }
+    .style = min-width: 490px;
+profiledowngrade-window-create =
+    .label = Create New Profile
+profiledowngrade-sync = Using an older version of { -brand-product-name } can corrupt bookmarks and browsing history already saved to an existing { -brand-product-name } profile. To protect your information, create a new profile for this installation of { -brand-short-name }. You can always sign in with a { -fxaccount-brand-name } to synchronise your bookmarks and browsing history between profiles.
+profiledowngrade-sync2 = Using an older version of { -brand-product-name } can corrupt bookmarks and browsing history already saved to an existing { -brand-product-name } profile. To protect your information, create a new profile for this installation of { -brand-short-name }. You can always sign in with an account to synchronise your bookmarks and browsing history between profiles.
+profiledowngrade-nosync = Using an older version of { -brand-product-name } can corrupt bookmarks and browsing history already saved to an existing { -brand-product-name } profile. To protect your information, create a new profile for this installation of { -brand-short-name }.
+profiledowngrade-quit =
+    .label =
+        { PLATFORM() ->
+            [windows] Exit
+           *[other] Quit
+        }
diff --git a/l10n-en-GB/toolkit/toolkit/global/profileSelection.ftl b/l10n-en-GB/toolkit/toolkit/global/profileSelection.ftl
new file mode 100644
index 0000000000..34bd5c9ce5
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/global/profileSelection.ftl
@@ -0,0 +1,38 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+profile-selection-window =
+    .title = { -brand-short-name } - Choose User Profile
+
+profile-selection-button-accept =
+    .label = Start { -brand-short-name }
+
+profile-selection-button-cancel =
+    .label = Exit
+
+profile-selection-new-button =
+    .label = Create Profile…
+    .accesskey = C
+
+profile-selection-rename-button =
+    .label = Rename Profile…
+    .accesskey = R
+
+profile-selection-delete-button =
+    .label = Delete Profile…
+    .accesskey = D
+
+profile-selection-conflict-message = Another copy of { -brand-product-name } has made changes to profiles. You must restart { -brand-short-name } before making more changes.
+
+## Messages used in the profile manager
+
+profile-manager-description = { -brand-short-name } stores information about your settings, preferences, and other user items in your user profile.
+
+profile-manager-work-offline =
+    .label = Work offline
+    .accesskey = o
+
+profile-manager-use-selected =
+    .label = Use the selected profile without asking at startup
+    .accesskey = s
diff --git a/l10n-en-GB/toolkit/toolkit/global/resetProfile.ftl b/l10n-en-GB/toolkit/toolkit/global/resetProfile.ftl
new file mode 100644
index 0000000000..2318d12c66
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/global/resetProfile.ftl
@@ -0,0 +1,15 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+refresh-profile-dialog-title = Refresh { -brand-short-name } to its default settings?
+refresh-profile-dialog-button =
+    .label = Refresh { -brand-short-name }
+refresh-profile-dialog-description = Start fresh to fix performance issues. This will remove your extensions and customisations. You won’t lose essential information like bookmarks and passwords.
+refresh-profile = Give { -brand-short-name } a tune up
+refresh-profile-button = Refresh { -brand-short-name }…
+refresh-profile-learn-more = Learn more
+
+refresh-profile-progress =
+    .title = Refresh { -brand-short-name }
+refresh-profile-progress-description = Almost done…
diff --git a/l10n-en-GB/toolkit/toolkit/global/resistFingerPrinting.ftl b/l10n-en-GB/toolkit/toolkit/global/resistFingerPrinting.ftl
new file mode 100644
index 0000000000..a9936281ca
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/global/resistFingerPrinting.ftl
@@ -0,0 +1,6 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# Spoof Accept-Language prompt
+privacy-spoof-english = Changing your language setting to English will make you more difficult to identify and enhance your privacy. Do you want to request English language versions of web pages?
diff --git a/l10n-en-GB/toolkit/toolkit/global/run-from-dmg.ftl b/l10n-en-GB/toolkit/toolkit/global/run-from-dmg.ftl
new file mode 100644
index 0000000000..5baa3622c3
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/global/run-from-dmg.ftl
@@ -0,0 +1,28 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+## Strings for a dialog that may open on macOS before the app's main window
+## opens. The dialog prompts the user to allow the app to install itself in an
+## appropriate location before relaunching itself from that location if the
+## user accepts.
+
+prompt-to-install-title = Finish installing { -brand-short-name }?
+prompt-to-install-message = Complete this one-step installation to help keep { -brand-short-name } up to date and prevent data loss. { -brand-short-name } will be added to your Applications folder and Dock.
+prompt-to-install-yes-button = Install
+prompt-to-install-no-button = Don’t Install
+
+## Strings for a dialog that opens if the installation failed.
+
+install-failed-title = { -brand-short-name } installation failed.
+install-failed-message = { -brand-short-name } failed to install but will continue to run.
+
+## Strings for a dialog that recommends to the user to start an existing
+## installation of the app in the Applications directory if one is detected,
+## rather than the app that was double-clicked in a .dmg.
+
+prompt-to-launch-existing-app-title = Open existing { -brand-short-name } application?
+prompt-to-launch-existing-app-message = You already have { -brand-short-name } installed. Use the installed application to stay up to date and prevent data loss.
+prompt-to-launch-existing-app-yes-button = Open existing
+prompt-to-launch-existing-app-no-button = No thanks
diff --git a/l10n-en-GB/toolkit/toolkit/global/tabprompts.ftl b/l10n-en-GB/toolkit/toolkit/global/tabprompts.ftl
new file mode 100644
index 0000000000..26eefa368b
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/global/tabprompts.ftl
@@ -0,0 +1,13 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+tabmodalprompt-username =
+    .value = User Name:
+tabmodalprompt-password =
+    .value = Password:
+
+tabmodalprompt-ok-button =
+    .label = OK
+tabmodalprompt-cancel-button =
+    .label = Cancel
diff --git a/l10n-en-GB/toolkit/toolkit/global/textActions.ftl b/l10n-en-GB/toolkit/toolkit/global/textActions.ftl
new file mode 100644
index 0000000000..a8153024aa
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/global/textActions.ftl
@@ -0,0 +1,64 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+text-action-undo =
+    .label = Undo
+    .accesskey = U
+text-action-undo-shortcut =
+    .key = Z
+text-action-redo =
+    .label = Redo
+    .accesskey = R
+text-action-redo-shortcut =
+    .key = Y
+text-action-cut =
+    .label = Cut
+    .accesskey = t
+text-action-cut-shortcut =
+    .key = X
+text-action-copy =
+    .label = Copy
+    .accesskey = C
+text-action-copy-shortcut =
+    .key = C
+# This command copies the link, removing additional
+# query parameters used to track users across sites.
+text-action-strip-on-share =
+    .label = Copy Without Site Tracking
+    .accesskey = n
+text-action-paste =
+    .label = Paste
+    .accesskey = P
+text-action-paste-no-formatting =
+    .label = Paste Without Formatting
+    .accesskey = m
+text-action-paste-shortcut =
+    .key = V
+text-action-delete =
+    .label = Delete
+    .accesskey = D
+text-action-select-all =
+    .label = Select All
+    .accesskey = A
+text-action-select-all-shortcut =
+    .key = A
+text-action-spell-no-suggestions =
+    .label = No Spelling Suggestions
+text-action-spell-add-to-dictionary =
+    .label = Add to Dictionary
+    .accesskey = o
+text-action-spell-undo-add-to-dictionary =
+    .label = Undo Add To Dictionary
+    .accesskey = n
+text-action-spell-check-toggle =
+    .label = Check Spelling
+    .accesskey = g
+text-action-spell-add-dictionaries =
+    .label = Add Dictionaries…
+    .accesskey = A
+text-action-spell-dictionaries =
+    .label = Languages
+    .accesskey = L
+text-action-search-text-box-clear =
+    .title = Clear
diff --git a/l10n-en-GB/toolkit/toolkit/global/timepicker.ftl b/l10n-en-GB/toolkit/toolkit/global/timepicker.ftl
new file mode 100644
index 0000000000..6fbe8159b2
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/global/timepicker.ftl
@@ -0,0 +1,3 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
diff --git a/l10n-en-GB/toolkit/toolkit/global/tree.ftl b/l10n-en-GB/toolkit/toolkit/global/tree.ftl
new file mode 100644
index 0000000000..aa009fd56a
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/global/tree.ftl
@@ -0,0 +1,6 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+tree-columnpicker-restore-order =
+    .label = Restore Column Order
diff --git a/l10n-en-GB/toolkit/toolkit/global/unknownContentType.ftl b/l10n-en-GB/toolkit/toolkit/global/unknownContentType.ftl
new file mode 100644
index 0000000000..fb29727c0b
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/global/unknownContentType.ftl
@@ -0,0 +1,42 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+unknowncontenttype-handleinternally =
+    .label = Open with { -brand-short-name }
+    .accesskey = e
+
+unknowncontenttype-settingschange =
+    .value =
+        { PLATFORM() ->
+            [windows] Settings can be changed in { -brand-short-name }’s Options.
+           *[other] Settings can be changed in { -brand-short-name }’s Preferences.
+        }
+
+unknowncontenttype-intro = You have chosen to open:
+unknowncontenttype-which-is = which is:
+unknowncontenttype-from = from:
+unknowncontenttype-prompt = Would you like to save this file?
+unknowncontenttype-action-question = What should { -brand-short-name } do with this file?
+unknowncontenttype-open-with =
+    .label = Open with
+    .accesskey = O
+unknowncontenttype-other =
+    .label = Other…
+unknowncontenttype-choose-handler =
+    .label =
+        { PLATFORM() ->
+            [macos] Choose…
+           *[other] Browse…
+        }
+    .accesskey =
+        { PLATFORM() ->
+            [macos] C
+           *[other] B
+        }
+unknowncontenttype-save-file =
+    .label = Save File
+    .accesskey = S
+unknowncontenttype-remember-choice =
+    .label = Do this automatically for files like this from now on.
+    .accesskey = a
diff --git a/l10n-en-GB/toolkit/toolkit/global/videocontrols.ftl b/l10n-en-GB/toolkit/toolkit/global/videocontrols.ftl
new file mode 100644
index 0000000000..ac9c64f235
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/global/videocontrols.ftl
@@ -0,0 +1,71 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# This label is used by screenreaders and other assistive technology to indicate
+# to users how much of the video has been loaded from the network. It will be
+# followed by the percentage of the video that has loaded (e.g. "Loading: 13%").
+videocontrols-buffer-bar-label = Loading:
+videocontrols-volume-control =
+    .aria-label = Volume
+videocontrols-closed-caption-button =
+    .aria-label = Closed Captions
+
+videocontrols-play-button =
+    .aria-label = Play
+videocontrols-pause-button =
+    .aria-label = Pause
+videocontrols-mute-button =
+    .aria-label = Mute
+videocontrols-unmute-button =
+    .aria-label = Unmute
+videocontrols-enterfullscreen-button =
+    .aria-label = Full Screen
+videocontrols-exitfullscreen-button =
+    .aria-label = Exit Full Screen
+videocontrols-casting-button-label =
+    .aria-label = Cast to Screen
+videocontrols-closed-caption-off =
+    .offlabel = Off
+
+# This string is used as part of the Picture-in-Picture video toggle button when
+# the mouse is hovering it.
+videocontrols-picture-in-picture-label = Picture-in-Picture
+
+# This string is used as the label for a variation of the Picture-in-Picture video
+# toggle button when the mouse is hovering over the video.
+videocontrols-picture-in-picture-toggle-label2 = Pop out this video
+
+videocontrols-picture-in-picture-explainer3 = More screens are more fun. Play this video while you do other things.
+
+videocontrols-error-aborted = Video loading stopped.
+videocontrols-error-network = Video playback aborted due to a network error.
+videocontrols-error-decode = Video can’t be played because the file is corrupt.
+videocontrols-error-src-not-supported = Video format or MIME type is not supported.
+videocontrols-error-no-source = No video with supported format and MIME type found.
+videocontrols-error-generic = Video playback aborted due to an unknown error.
+videocontrols-status-picture-in-picture = This video is playing in Picture-in-Picture mode.
+
+# This message shows the current position and total video duration
+#
+# Variables:
+#   $position (String): The current media position
+#   $duration (String): The total video duration
+#
+# For example, when at the 5 minute mark in a 6 hour long video,
+# $position would be "5:00" and $duration would be "6:00:00", result
+# string would be "5:00 / 6:00:00". Note that $duration is not always
+# available. For example, when at the 5 minute mark in an unknown
+# duration video, $position would be "5:00" and the string which is
+# surrounded by <span> would be deleted, result string would be "5:00".
+videocontrols-position-and-duration-labels = { $position }<span data-l10n-name="position-duration-format"> / { $duration }</span>
+
+# This is a plain text version of the videocontrols-position-and-duration-labels
+# string, used by screenreaders.
+#
+# Variables:
+#   $position (String): The current media position
+#   $duration (String): The total video duration
+videocontrols-scrubber-position-and-duration =
+    .aria-label = Position
+    .aria-valuetext = { $position } / { $duration }
diff --git a/l10n-en-GB/toolkit/toolkit/global/wizard.ftl b/l10n-en-GB/toolkit/toolkit/global/wizard.ftl
new file mode 100644
index 0000000000..21f524bbb5
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/global/wizard.ftl
@@ -0,0 +1,37 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+wizard-macos-button-back =
+    .label = Go Back
+    .accesskey = B
+wizard-linux-button-back =
+    .label = Back
+    .accesskey = B
+wizard-win-button-back =
+    .label = < Back
+    .accesskey = B
+
+wizard-macos-button-next =
+    .label = Continue
+    .accesskey = C
+wizard-linux-button-next =
+    .label = Next
+    .accesskey = N
+wizard-win-button-next =
+    .label = Next >
+    .accesskey = N
+
+wizard-macos-button-finish =
+    .label = Done
+wizard-linux-button-finish =
+    .label = Finish
+wizard-win-button-finish =
+    .label = Finish
+
+wizard-macos-button-cancel =
+    .label = Cancel
+wizard-linux-button-cancel =
+    .label = Cancel
+wizard-win-button-cancel =
+    .label = Cancel
diff --git a/l10n-en-GB/toolkit/toolkit/intl/languageNames.ftl b/l10n-en-GB/toolkit/toolkit/intl/languageNames.ftl
new file mode 100644
index 0000000000..a7d76b7d98
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/intl/languageNames.ftl
@@ -0,0 +1,215 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+language-name-aa = Afar
+language-name-ab = Abkhazian
+language-name-ach = Acholi
+language-name-ae = Avestan
+language-name-af = Afrikaans
+language-name-ak = Akan
+language-name-am = Amharic
+language-name-an = Aragonese
+language-name-ar = Arabic
+language-name-as = Assamese
+language-name-ast = Asturian
+language-name-av = Avaric
+language-name-ay = Aymara
+language-name-az = Azerbaijani
+language-name-ba = Bashkir
+language-name-be = Belarusian
+language-name-bg = Bulgarian
+language-name-bh = Bihari
+language-name-bi = Bislama
+language-name-bm = Bambara
+language-name-bn = Bengali
+language-name-bo = Tibetan
+language-name-br = Breton
+language-name-bs = Bosnian
+language-name-ca = Catalan
+language-name-cak = Kaqchikel
+language-name-ce = Chechen
+language-name-ch = Chamorro
+language-name-co = Corsican
+language-name-cr = Cree
+language-name-crh = Crimean Tatar
+language-name-cs = Czech
+language-name-csb = Kashubian
+language-name-cu = Church Slavic
+language-name-cv = Chuvash
+language-name-cy = Welsh
+language-name-da = Danish
+language-name-de = German
+language-name-dsb = Lower Sorbian
+language-name-dv = Divehi
+language-name-dz = Dzongkha
+language-name-ee = Ewe
+language-name-el = Greek
+language-name-en = English
+language-name-eo = Esperanto
+language-name-es = Spanish
+language-name-et = Estonian
+language-name-eu = Basque
+language-name-fa = Persian
+language-name-ff = Fulah
+language-name-fi = Finnish
+language-name-fj = Fijian
+language-name-fo = Faroese
+language-name-fr = French
+language-name-fur = Friulian
+language-name-fy = Frisian
+language-name-ga = Irish
+language-name-gd = Scottish Gaelic
+language-name-gl = Galician
+language-name-gn = Guarani
+language-name-gu = Gujarati
+language-name-gv = Manx
+language-name-ha = Hausa
+language-name-haw = Hawaiian
+language-name-he = Hebrew
+language-name-hi = Hindi
+language-name-hil = Hiligaynon
+language-name-ho = Hiri Motu
+language-name-hr = Croatian
+language-name-hsb = Upper Sorbian
+language-name-ht = Haitian
+language-name-hu = Hungarian
+language-name-hy = Armenian
+language-name-hz = Herero
+language-name-ia = Interlingua
+language-name-id = Indonesian
+language-name-ie = Interlingue
+language-name-ig = Igbo
+language-name-ii = Sichuan Yi
+language-name-ik = Inupiaq
+language-name-io = Ido
+language-name-is = Icelandic
+language-name-it = Italian
+language-name-iu = Inuktitut
+language-name-ja = Japanese
+language-name-jv = Javanese
+language-name-ka = Georgian
+language-name-kab = Kabyle
+language-name-kg = Kongo
+language-name-ki = Kikuyu
+language-name-kj = Kuanyama
+language-name-kk = Kazakh
+language-name-kl = Greenlandic
+language-name-km = Khmer
+language-name-kn = Kannada
+language-name-ko = Korean
+language-name-kok = Konkani
+language-name-kr = Kanuri
+language-name-ks = Kashmiri
+language-name-ku = Kurdish
+language-name-kv = Komi
+language-name-kw = Cornish
+language-name-ky = Kirghiz
+language-name-la = Latin
+language-name-lb = Luxembourgish
+language-name-lg = Ganda
+language-name-li = Limburgan
+language-name-lij = Ligurian
+language-name-ln = Lingala
+language-name-lo = Lao
+language-name-lt = Lithuanian
+language-name-ltg = Latgalian
+language-name-lu = Luba-Katanga
+language-name-lv = Latvian
+language-name-mai = Maithili
+language-name-meh = Southwestern Tlaxiaco Mixtec
+language-name-mg = Malagasy
+language-name-mh = Marshallese
+language-name-mi = Maori
+language-name-mix = Mixtepec Mixtec
+language-name-mk = Macedonian
+language-name-ml = Malayalam
+language-name-mn = Mongolian
+language-name-mr = Marathi
+language-name-ms = Malay
+language-name-mt = Maltese
+language-name-my = Burmese
+language-name-na = Nauru
+language-name-nb = Norwegian Bokmål
+language-name-nd = Ndebele, North
+language-name-ne = Nepali
+language-name-ng = Ndonga
+language-name-nl = Dutch
+language-name-nn = Norwegian Nynorsk
+language-name-no = Norwegian
+language-name-nr = Ndebele, South
+language-name-nso = Sotho, Northern
+language-name-nv = Navajo
+language-name-ny = Chichewa
+language-name-oc = Occitan
+language-name-oj = Ojibwa
+language-name-om = Oromo
+language-name-or = Odia
+language-name-os = Ossetian
+language-name-pa = Punjabi
+language-name-pi = Pali
+language-name-pl = Polish
+language-name-ps = Pashto
+language-name-pt = Portuguese
+language-name-qu = Quechua
+language-name-rm = Rhaeto-Romanic
+language-name-rn = Kirundi
+language-name-ro = Romanian
+language-name-ru = Russian
+language-name-rw = Kinyarwanda
+language-name-sa = Sanskrit
+language-name-sat = Santali
+language-name-sc = Sardinian
+language-name-sco = Scots
+language-name-sd = Sindhi
+language-name-se = Northern Sami
+language-name-sg = Sango
+language-name-si = Sinhala
+language-name-sk = Slovak
+language-name-sl = Slovenian
+language-name-sm = Samoan
+language-name-sn = Shona
+language-name-so = Somali
+language-name-son = Songhay
+language-name-sq = Albanian
+language-name-sr = Serbian
+language-name-ss = Siswati
+language-name-st = Sotho, Southern
+language-name-su = Sundanese
+language-name-sv = Swedish
+language-name-sw = Swahili
+language-name-szl = Silesian
+language-name-ta = Tamil
+language-name-te = Telugu
+language-name-tg = Tajik
+language-name-th = Thai
+language-name-ti = Tigrinya
+language-name-tig = Tigre
+language-name-tk = Turkmen
+language-name-tl = Tagalog
+language-name-tlh = Klingon
+language-name-tn = Tswana
+language-name-to = Tonga
+language-name-tr = Turkish
+language-name-trs = Triqui
+language-name-ts = Tsonga
+language-name-tt = Tatar
+language-name-tw = Twi
+language-name-ty = Tahitian
+language-name-ug = Uighur
+language-name-uk = Ukrainian
+language-name-ur = Urdu
+language-name-uz = Uzbek
+language-name-ve = Venda
+language-name-vi = Vietnamese
+language-name-vo = Volapük
+language-name-wa = Walloon
+language-name-wen = Sorbian
+language-name-wo = Wolof
+language-name-xh = Xhosa
+language-name-yi = Yiddish
+language-name-yo = Yoruba
+language-name-za = Zhuang
+language-name-zam = Miahuatlán Zapotec
+language-name-zh = Chinese
+language-name-zu = Zulu
diff --git a/l10n-en-GB/toolkit/toolkit/intl/regionNames.ftl b/l10n-en-GB/toolkit/toolkit/intl/regionNames.ftl
new file mode 100644
index 0000000000..6914f8c949
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/intl/regionNames.ftl
@@ -0,0 +1,280 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+### Notice: If you're updating this list, you should also
+###         update the list in mozIntl.js.
+
+region-name-ad = Andorra
+region-name-ae = United Arab Emirates
+region-name-af = Afghanistan
+region-name-ag = Antigua and Barbuda
+region-name-ai = Anguilla
+region-name-al = Albania
+region-name-am = Armenia
+region-name-ao = Angola
+region-name-aq = Antarctica
+region-name-ar = Argentina
+region-name-as = American Samoa
+region-name-at = Austria
+region-name-au = Australia
+region-name-aw = Aruba
+region-name-az = Azerbaijan
+region-name-ba = Bosnia and Herzegovina
+region-name-bb = Barbados
+region-name-bd = Bangladesh
+region-name-be = Belgium
+region-name-bf = Burkina Faso
+region-name-bg = Bulgaria
+region-name-bh = Bahrain
+region-name-bi = Burundi
+region-name-bj = Benin
+region-name-bl = Saint Barthélemy
+region-name-bm = Bermuda
+region-name-bn = Brunei
+region-name-bo = Bolivia
+region-name-bq-2018 = Caribbean Netherlands
+region-name-br = Brazil
+region-name-bs = Bahamas, The
+region-name-bt = Bhutan
+region-name-bv = Bouvet Island
+region-name-bw = Botswana
+region-name-by = Belarus
+region-name-bz = Belize
+region-name-ca = Canada
+region-name-cc = Cocos (Keeling) Islands
+region-name-cd = Congo (Kinshasa)
+region-name-cf = Central African Republic
+region-name-cg = Congo (Brazzaville)
+region-name-ch = Switzerland
+region-name-ci = Côte d’Ivoire
+region-name-ck = Cook Islands
+region-name-cl = Chile
+region-name-cm = Cameroon
+region-name-cn = China
+region-name-co = Colombia
+region-name-cp = Clipperton Island
+region-name-cr = Costa Rica
+region-name-cu = Cuba
+region-name-cv-2020 = Cape Verde
+region-name-cw = Curaçao
+region-name-cx = Christmas Island
+region-name-cy = Cyprus
+region-name-cz-2019 = Czechia
+region-name-de = Germany
+region-name-dg = Diego Garcia
+region-name-dj = Djibouti
+region-name-dk = Denmark
+region-name-dm = Dominica
+region-name-do = Dominican Republic
+region-name-dz = Algeria
+region-name-ec = Ecuador
+region-name-ee = Estonia
+region-name-eg = Egypt
+region-name-eh = Western Sahara
+region-name-er = Eritrea
+region-name-es = Spain
+region-name-et = Ethiopia
+region-name-fi = Finland
+region-name-fj = Fiji
+region-name-fk = Falkland Islands (Islas Malvinas)
+region-name-fm = Micronesia, Federated States of
+region-name-fo = Faroe Islands
+region-name-fr = France
+region-name-ga = Gabon
+region-name-gb = United Kingdom
+region-name-gd = Grenada
+region-name-ge = Georgia
+region-name-gf = French Guiana
+region-name-gg = Guernsey
+region-name-gh = Ghana
+region-name-gi = Gibraltar
+region-name-gl = Greenland
+region-name-gm = Gambia, The
+region-name-gn = Guinea
+region-name-gp = Guadeloupe
+region-name-gq = Equatorial Guinea
+region-name-gr = Greece
+region-name-gs = South Georgia and South Sandwich Islands
+region-name-gt = Guatemala
+region-name-gu = Guam
+region-name-gw = Guinea-Bissau
+region-name-gy = Guyana
+region-name-hk = Hong Kong
+region-name-hm = Heard Island and McDonald Islands
+region-name-hn = Honduras
+region-name-hr = Croatia
+region-name-ht = Haiti
+region-name-hu = Hungary
+region-name-id = Indonesia
+region-name-ie = Ireland
+region-name-il = Israel
+region-name-im = Isle of Man
+region-name-in = India
+region-name-io = British Indian Ocean Territory
+region-name-iq = Iraq
+region-name-ir = Iran
+region-name-is = Iceland
+region-name-it = Italy
+region-name-je = Jersey
+region-name-jm = Jamaica
+region-name-jo = Jordan
+region-name-jp = Japan
+region-name-ke = Kenya
+region-name-kg = Kyrgyzstan
+region-name-kh = Cambodia
+region-name-ki = Kiribati
+region-name-km = Comoros
+region-name-kn = Saint Kitts and Nevis
+region-name-kp = Korea, North
+region-name-kr = Korea, South
+region-name-kw = Kuwait
+region-name-ky = Cayman Islands
+region-name-kz = Kazakhstan
+region-name-la = Laos
+region-name-lb = Lebanon
+region-name-lc = Saint Lucia
+region-name-li = Liechtenstein
+region-name-lk = Sri Lanka
+region-name-lr = Liberia
+region-name-ls = Lesotho
+region-name-lt = Lithuania
+region-name-lu = Luxembourg
+region-name-lv = Latvia
+region-name-ly = Libya
+region-name-ma = Morocco
+region-name-mc = Monaco
+region-name-md = Moldova
+region-name-me = Montenegro
+region-name-mf = Saint Martin
+region-name-mg = Madagascar
+region-name-mh = Marshall Islands
+region-name-mk-2019 = North Macedonia
+region-name-ml = Mali
+region-name-mm = Burma
+region-name-mn = Mongolia
+region-name-mo = Macau
+region-name-mp = Northern Mariana Islands
+region-name-mq = Martinique
+region-name-mr = Mauritania
+region-name-ms = Montserrat
+region-name-mt = Malta
+region-name-mu = Mauritius
+region-name-mv = Maldives
+region-name-mw = Malawi
+region-name-mx = Mexico
+region-name-my = Malaysia
+region-name-mz = Mozambique
+region-name-na = Namibia
+region-name-nc = New Caledonia
+region-name-ne = Niger
+region-name-nf = Norfolk Island
+region-name-ng = Nigeria
+region-name-ni = Nicaragua
+region-name-nl = Netherlands
+region-name-no = Norway
+region-name-np = Nepal
+region-name-nr = Nauru
+region-name-nu = Niue
+region-name-nz = New Zealand
+region-name-om = Oman
+region-name-pa = Panama
+region-name-pe = Peru
+region-name-pf = French Polynesia
+region-name-pg = Papua New Guinea
+region-name-ph = Philippines
+region-name-pk = Pakistan
+region-name-pl = Poland
+region-name-pm = Saint Pierre and Miquelon
+region-name-pn = Pitcairn Islands
+region-name-pr = Puerto Rico
+region-name-pt = Portugal
+region-name-pw = Palau
+region-name-py = Paraguay
+region-name-qa = Qatar
+region-name-qm = Midway Islands
+region-name-qs = Bassas da India
+region-name-qu = Juan de Nova Island
+region-name-qw = Wake Island
+region-name-qx = Glorioso Islands
+region-name-qz = Akrotiri
+region-name-re = Réunion
+region-name-ro = Romania
+region-name-rs = Serbia
+region-name-ru = Russia
+region-name-rw = Rwanda
+region-name-sa = Saudi Arabia
+region-name-sb = Solomon Islands
+region-name-sc = Seychelles
+region-name-sd = Sudan
+region-name-se = Sweden
+region-name-sg = Singapore
+region-name-sh = Saint Helena, Ascension, and Tristan da Cunha
+region-name-si = Slovenia
+region-name-sk = Slovakia
+region-name-sl = Sierra Leone
+region-name-sm = San Marino
+region-name-sn = Senegal
+region-name-so = Somalia
+region-name-sr = Suriname
+region-name-ss = South Sudan
+region-name-st = São Tomé and Príncipe
+region-name-sv = El Salvador
+region-name-sx = Sint Maarten
+region-name-sy = Syria
+region-name-sz-2019 = Eswatini
+region-name-tc = Turks and Caicos Islands
+region-name-td = Chad
+region-name-tf = French Southern and Antarctic Lands
+region-name-tg = Togo
+region-name-th = Thailand
+region-name-tj = Tajikistan
+region-name-tk = Tokelau
+region-name-tl = Timor-Leste
+region-name-tm = Turkmenistan
+region-name-tn = Tunisia
+region-name-to = Tonga
+region-name-tr = Turkey
+region-name-tt = Trinidad and Tobago
+region-name-tv = Tuvalu
+region-name-tw = Taiwan
+region-name-tz = Tanzania
+region-name-ua = Ukraine
+region-name-ug = Uganda
+region-name-us = United States
+region-name-uy = Uruguay
+region-name-uz = Uzbekistan
+region-name-va = Vatican City
+region-name-vc = Saint Vincent and the Grenadines
+region-name-ve = Venezuela
+region-name-vg = Virgin Islands, British
+region-name-vi = Virgin Islands, U.S.
+region-name-vn = Vietnam
+region-name-vu = Vanuatu
+region-name-wf = Wallis and Futuna
+region-name-ws = Samoa
+region-name-xa = Ashmore and Cartier Islands
+region-name-xb = Baker Island
+region-name-xc = Coral Sea Islands
+region-name-xd = Dhekelia
+region-name-xe = Europa Island
+region-name-xg = Gaza Strip
+region-name-xh = Howland Island
+region-name-xj = Jan Mayen
+region-name-xk = Kosovo
+region-name-xl = Palmyra Atoll
+region-name-xm = Kingman Reef
+region-name-xp = Paracel Islands
+region-name-xq = Jarvis Island
+region-name-xr = Svalbard
+region-name-xs = Spratly Islands
+region-name-xt = Tromelin Island
+region-name-xu = Johnston Atoll
+region-name-xv = Navassa Island
+region-name-xw = West Bank
+region-name-ye = Yemen
+region-name-yt = Mayotte
+region-name-za = South Africa
+region-name-zm = Zambia
+region-name-zw = Zimbabwe
diff --git a/l10n-en-GB/toolkit/toolkit/main-window/autocomplete.ftl b/l10n-en-GB/toolkit/toolkit/main-window/autocomplete.ftl
new file mode 100644
index 0000000000..2154f0fda8
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/main-window/autocomplete.ftl
@@ -0,0 +1,23 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+## Import Logins Autocomplete
+
+## Variables:
+##   $host (String) - Host name of the current site.
+
+autocomplete-import-logins-chrome =
+    <div data-l10n-name="line1">Import your login from Google Chrome</div>
+    <div data-l10n-name="line2">for { $host } and other sites</div>
+autocomplete-import-logins-chromium =
+    <div data-l10n-name="line1">Import your login from Chromium</div>
+    <div data-l10n-name="line2">for { $host } and other sites</div>
+autocomplete-import-logins-chromium-edge =
+    <div data-l10n-name="line1">Import your login from Microsoft Edge</div>
+    <div data-l10n-name="line2">for { $host } and other sites</div>
+
+##
+
+autocomplete-import-learn-more = Learn more
diff --git a/l10n-en-GB/toolkit/toolkit/main-window/findbar.ftl b/l10n-en-GB/toolkit/toolkit/main-window/findbar.ftl
new file mode 100644
index 0000000000..841e7253e0
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/main-window/findbar.ftl
@@ -0,0 +1,76 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+### This file contains the entities needed to use the Find Bar.
+
+findbar-next =
+    .tooltiptext = Find the next occurrence of the phrase
+findbar-previous =
+    .tooltiptext = Find the previous occurrence of the phrase
+
+findbar-find-button-close =
+    .tooltiptext = Close find bar
+
+findbar-highlight-all2 =
+    .label = Highlight All
+    .accesskey =
+        { PLATFORM() ->
+            [macos] l
+           *[other] a
+        }
+    .tooltiptext = Highlight all occurrences of the phrase
+
+findbar-case-sensitive =
+    .label = Match Case
+    .accesskey = c
+    .tooltiptext = Search with case sensitivity
+
+findbar-match-diacritics =
+    .label = Match Diacritics
+    .accesskey = i
+    .tooltiptext = Distinguish between accented letters and their base letters (for example, when searching for “resume”, “résumé” will not be matched)
+
+findbar-entire-word =
+    .label = Whole Words
+    .accesskey = W
+    .tooltiptext = Search whole words only
+
+findbar-not-found = Phrase not found
+
+findbar-wrapped-to-top = Reached end of page, continued from top
+findbar-wrapped-to-bottom = Reached top of page, continued from bottom
+
+findbar-normal-find =
+    .placeholder = Find in page
+findbar-fast-find =
+    .placeholder = Quick find
+findbar-fast-find-links =
+    .placeholder = Quick find (links only)
+
+findbar-case-sensitive-status =
+    .value = (Case sensitive)
+findbar-match-diacritics-status =
+    .value = (Matching diacritics)
+findbar-entire-word-status =
+    .value = (Whole words only)
+
+# Variables:
+#   $current (Number): Index of the currently selected match
+#   $total (Number): Total count of matches
+findbar-found-matches =
+    .value =
+        { $total ->
+            [one] { $current } of { $total } match
+           *[other] { $current } of { $total } matches
+        }
+
+# Variables:
+#   $limit (Number): Total count of matches allowed before counting stops
+findbar-found-matches-count-limit =
+    .value =
+        { $limit ->
+            [one] More than { $limit } match
+           *[other] More than { $limit } matches
+        }
diff --git a/l10n-en-GB/toolkit/toolkit/neterror/certError.ftl b/l10n-en-GB/toolkit/toolkit/neterror/certError.ftl
new file mode 100644
index 0000000000..d141312cbe
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/neterror/certError.ftl
@@ -0,0 +1,141 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# Variables:
+#   $hostname (string) - Hostname of the website with cert error.
+cert-error-intro = { $hostname } uses an invalid security certificate.
+
+cert-error-mitm-intro = Web sites prove their identity via certificates, which are issued by certificate authorities.
+
+cert-error-mitm-mozilla = { -brand-short-name } is backed by the non-profit Mozilla, which administers a completely open certificate authority (CA) store. The CA store helps ensure that certificate authorities are following best practices for user security.
+
+cert-error-mitm-connection = { -brand-short-name } uses the Mozilla CA store to verify that a connection is secure, rather than certificates supplied by the user’s operating system. So, if an antivirus program or a network is intercepting a connection with a security certificate issued by a CA that is not in the Mozilla CA store, the connection is considered unsafe.
+
+cert-error-trust-unknown-issuer-intro = Someone could be trying to impersonate the site and you should not continue.
+
+# Variables:
+#   $hostname (string) - Hostname of the website with cert error.
+cert-error-trust-unknown-issuer = Web sites prove their identity via certificates. { -brand-short-name } does not trust { $hostname } because its certificate issuer is unknown, the certificate is self-signed, or the server is not sending the correct intermediate certificates.
+
+cert-error-trust-cert-invalid = The certificate is not trusted because it was issued by an invalid CA certificate.
+
+cert-error-trust-untrusted-issuer = The certificate is not trusted because the issuer certificate is not trusted.
+
+cert-error-trust-signature-algorithm-disabled = The certificate is not trusted because it was signed using a signature algorithm that was disabled because that algorithm is not secure.
+
+cert-error-trust-expired-issuer = The certificate is not trusted because the issuer certificate has expired.
+
+cert-error-trust-self-signed = The certificate is not trusted because it is self-signed.
+
+cert-error-trust-symantec = Certificates issued by GeoTrust, RapidSSL, Symantec, Thawte and VeriSign are no longer considered safe because these certificate authorities failed to follow security practices in the past.
+
+cert-error-untrusted-default = The certificate does not come from a trusted source.
+
+# Variables:
+#   $hostname (string) - Hostname of the website with cert error.
+cert-error-domain-mismatch = Web sites prove their identity via certificates. { -brand-short-name } does not trust this site because it uses a certificate that is not valid for { $hostname }.
+
+# Variables:
+#   $hostname (string) - Hostname of the website with cert error.
+#   $alt-name (string) - Alternate domain name for which the cert is valid.
+cert-error-domain-mismatch-single = Web sites prove their identity via certificates. { -brand-short-name } does not trust this site because it uses a certificate that is not valid for { $hostname }. The certificate is only valid for <a data-l10n-name="domain-mismatch-link">{ $alt-name }</a>.
+
+# Variables:
+#   $hostname (string) - Hostname of the website with cert error.
+#   $alt-name (string) - Alternate domain name for which the cert is valid.
+cert-error-domain-mismatch-single-nolink = Web sites prove their identity via certificates. { -brand-short-name } does not trust this site because it uses a certificate that is not valid for { $hostname }. The certificate is only valid for { $alt-name }.
+
+# Variables:
+#   $hostname (string) - Hostname of the website with cert error.
+#   $subject-alt-names (string) - Alternate domain names for which the cert is valid.
+cert-error-domain-mismatch-multiple = Web sites prove their identity via certificates. { -brand-short-name } does not trust this site because it uses a certificate that is not valid for { $hostname }. The certificate is only valid for the following names: { $subject-alt-names }
+
+# Variables:
+#   $hostname (string) - Hostname of the website with cert error.
+#   $not-after-local-time (Date) - Certificate is not valid after this time.
+cert-error-expired-now = Web sites prove their identity via certificates, which are valid for a set time period. The certificate for { $hostname } expired on { $not-after-local-time }.
+
+# Variables:
+#   $hostname (string) - Hostname of the website with cert error.
+#   $not-before-local-time (Date) - Certificate is not valid before this time.
+cert-error-not-yet-valid-now = Web sites prove their identity via certificates, which are valid for a set time period. The certificate for { $hostname } will not be valid until { $not-before-local-time }.
+
+# Variables:
+#   $error (string) - NSS error code string that specifies type of cert error. e.g. unknown issuer, invalid cert, etc.
+cert-error-code-prefix = Error code: { $error }
+
+# Variables:
+#   $error (string) - NSS error code string that specifies type of cert error. e.g. unknown issuer, invalid cert, etc.
+cert-error-code-prefix-link = Error code: <a data-l10n-name="error-code-link">{ $error }</a>
+
+# Variables:
+#   $hostname (string) - Hostname of the website with SSL error.
+#   $errorMessage (string) - Error message corresponding to the type of error we are experiencing.
+cert-error-ssl-connection-error = An error occurred during a connection to { $hostname }. { $errorMessage }
+
+# Variables:
+#   $hostname (string) - Hostname of the website with cert error.
+cert-error-symantec-distrust-description = Web sites prove their identity via certificates, which are issued by certificate authorities. Most browsers no longer trust certificates issued by GeoTrust, RapidSSL, Symantec, Thawte and VeriSign. { $hostname } uses a certificate from one of these authorities and so the web site’s identity cannot be proven.
+
+cert-error-symantec-distrust-admin = You may notify the web site’s administrator about this problem.
+
+cert-error-old-tls-version = This web site might not support the TLS 1.2 protocol, which is the minimum version supported by { -brand-short-name }.
+
+# Variables:
+#   $hasHSTS (Boolean) - Indicates whether HSTS header is present.
+cert-error-details-hsts-label = HTTP Strict Transport Security: { $hasHSTS }
+
+# Variables:
+#   $hasHPKP (Boolean) - Indicates whether HPKP header is present.
+cert-error-details-key-pinning-label = HTTP Public Key Pinning: { $hasHPKP }
+
+cert-error-details-cert-chain-label = Certificate chain:
+
+open-in-new-window-for-csp-or-xfo-error = Open Site in New Window
+
+# Variables:
+#   $hostname (string) - Hostname of the website blocked by csp or xfo error.
+csp-xfo-blocked-long-desc = To protect your security, { $hostname } will not allow { -brand-short-name } to display the page if another site has embedded it. To see this page, you need to open it in a new window.
+
+## Messages used for certificate error titles
+
+connectionFailure-title = Unable to connect
+deniedPortAccess-title = This address is restricted
+# "Hmm" is a sound made when considering or puzzling over something.
+# You don't have to include it in your translation if your language does not have a written word like this.
+dnsNotFound-title = Hmm. We’re having trouble finding that site.
+
+dns-not-found-trr-only-title2 = Possible security risk looking up this domain
+dns-not-found-native-fallback-title2 = Possible security risk looking up this domain
+
+fileNotFound-title = File not found
+fileAccessDenied-title = Access to the file was denied
+generic-title = Oops.
+captivePortal-title = Log in to network
+# "Hmm" is a sound made when considering or puzzling over something.
+# You don't have to include it in your translation if your language does not have a written word like this.
+malformedURI-title = Hmm. That address doesn’t look right.
+netInterrupt-title = The connection was interrupted
+notCached-title = Document Expired
+netOffline-title = Offline mode
+contentEncodingError-title = Content Encoding Error
+unsafeContentType-title = Unsafe File Type
+netReset-title = The connection was reset
+netTimeout-title = The connection has timed out
+unknownProtocolFound-title = The address wasn’t understood
+proxyConnectFailure-title = The proxy server is refusing connections
+proxyResolveFailure-title = Unable to find the proxy server
+redirectLoop-title = The page isn’t redirecting properly
+unknownSocketType-title = Unexpected response from server
+nssFailure2-title = Secure Connection Failed
+csp-xfo-error-title = { -brand-short-name } Can’t Open This Page
+corruptedContentError-title = Corrupted Content Error
+sslv3Used-title = Unable to Connect Securely
+inadequateSecurityError-title = Your connection is not secure
+blockedByPolicy-title = Blocked Page
+clockSkewError-title = Your Computer Clock is Wrong
+networkProtocolError-title = Network Protocol Error
+nssBadCert-title = Warning: Potential Security Risk Ahead
+nssBadCert-sts-title = Did Not Connect: Potential Security Issue
+certerror-mitm-title = Software is Preventing { -brand-short-name } From Safely Connecting to This Site
diff --git a/l10n-en-GB/toolkit/toolkit/neterror/netError.ftl b/l10n-en-GB/toolkit/toolkit/neterror/netError.ftl
new file mode 100644
index 0000000000..8f0535fe8f
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/neterror/netError.ftl
@@ -0,0 +1,149 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+## Error page titles
+
+neterror-page-title = Problem loading page
+certerror-page-title = Warning: Potential Security Risk Ahead
+certerror-sts-page-title = Did Not Connect: Potential Security Issue
+neterror-blocked-by-policy-page-title = Blocked Page
+neterror-captive-portal-page-title = Log in to network
+neterror-dns-not-found-title = Server Not Found
+neterror-malformed-uri-page-title = Invalid URL
+
+## Error page actions
+
+neterror-advanced-button = Advanced…
+neterror-copy-to-clipboard-button = Copy text to clipboard
+neterror-learn-more-link = Learn more…
+neterror-open-portal-login-page-button = Open Network Login Page
+neterror-override-exception-button = Accept the Risk and Continue
+neterror-pref-reset-button = Restore default settings
+neterror-return-to-previous-page-button = Go Back
+neterror-return-to-previous-page-recommended-button = Go Back (Recommended)
+neterror-try-again-button = Try Again
+neterror-add-exception-button = Always continue for this site
+neterror-settings-button = Change DNS settings
+neterror-view-certificate-link = View Certificate
+neterror-trr-continue-this-time = Continue this time
+neterror-disable-native-feedback-warning = Always continue
+
+##
+
+neterror-pref-reset = It looks like your network security settings might be causing this. Do you want the default settings to be restored?
+neterror-error-reporting-automatic = Report errors like this to help { -vendor-short-name } identify and block malicious sites
+
+## Specific error messages
+
+neterror-generic-error = { -brand-short-name } can’t load this page for some reason.
+neterror-load-error-try-again = The site could be temporarily unavailable or too busy. Try again in a few moments.
+neterror-load-error-connection = If you are unable to load any pages, check your computer’s network connection.
+neterror-load-error-firewall = If your computer or network is protected by a firewall or proxy, make sure that { -brand-short-name } is permitted to access the web.
+neterror-captive-portal = You must log in to this network before you can access the internet.
+# Variables:
+# $hostAndPath (String) - a suggested site (e.g. "www.example.com") that the user may have meant instead.
+neterror-dns-not-found-with-suggestion = Did you mean to go to <a data-l10n-name="website">{ $hostAndPath }</a>?
+neterror-dns-not-found-hint-header = <strong>If you entered the right address, you can:</strong>
+neterror-dns-not-found-hint-try-again = Try again later
+neterror-dns-not-found-hint-check-network = Check your network connection
+neterror-dns-not-found-hint-firewall = Check that { -brand-short-name } has permission to access the web (you might be connected but behind a firewall)
+
+## TRR-only specific messages
+## Variables:
+##   $hostname (String) - Hostname of the website to which the user was trying to connect.
+##   $trrDomain (String) - Hostname of the DNS over HTTPS server that is currently in use.
+
+neterror-dns-not-found-trr-only-reason = { -brand-short-name } can’t protect your request for this site’s address through our trusted DNS resolver. Here’s why:
+neterror-dns-not-found-trr-only-reason2 = { -brand-short-name } can’t protect your request for this site’s address through our secure DNS provider. Here’s why:
+neterror-dns-not-found-trr-third-party-warning2 = You can continue with your default DNS resolver. However, a third-party might be able to see what web sites you visit.
+neterror-dns-not-found-trr-only-could-not-connect = { -brand-short-name } wasn’t able to connect to { $trrDomain }.
+neterror-dns-not-found-trr-only-timeout = The connection to { $trrDomain } took longer than expected.
+neterror-dns-not-found-trr-offline = You are not connected to the internet.
+neterror-dns-not-found-trr-unknown-host2 = This web site wasn’t found by { $trrDomain }.
+neterror-dns-not-found-trr-server-problem = There was a problem with { $trrDomain }.
+neterror-dns-not-found-bad-trr-url = Invalid URL.
+neterror-dns-not-found-trr-unknown-problem = Unexpected problem.
+
+## Native fallback specific messages
+## Variables:
+##   $trrDomain (String) - Hostname of the DNS over HTTPS server that is currently in use.
+
+neterror-dns-not-found-native-fallback-reason = { -brand-short-name } can’t protect your request for this site’s address through our trusted DNS resolver. Here’s why:
+neterror-dns-not-found-native-fallback-reason2 = { -brand-short-name } can’t protect your request for this site’s address through our secure DNS provider. Here’s why:
+neterror-dns-not-found-native-fallback-heuristic = DNS over HTTPS has been disabled on your network.
+neterror-dns-not-found-native-fallback-not-confirmed2 = { -brand-short-name } wasn’t able to connect to { $trrDomain }.
+
+##
+
+neterror-file-not-found-filename = Check the file name for capitalisation or other typing errors.
+neterror-file-not-found-moved = Check to see if the file was moved, renamed or deleted.
+neterror-access-denied = It may have been removed, moved, or file permissions may be preventing access.
+neterror-unknown-protocol = You might need to install other software to open this address.
+neterror-redirect-loop = This problem can sometimes be caused by disabling or refusing to accept cookies.
+neterror-unknown-socket-type-psm-installed = Check to make sure your system has the Personal Security Manager installed.
+neterror-unknown-socket-type-server-config = This might be due to a non-standard configuration on the server.
+neterror-not-cached-intro = The requested document is not available in { -brand-short-name }’s cache.
+neterror-not-cached-sensitive = As a security precaution, { -brand-short-name } does not automatically re-request sensitive documents.
+neterror-not-cached-try-again = Click Try Again to re-request the document from the web site.
+neterror-net-offline = Press “Try Again” to switch to online mode and reload the page.
+neterror-proxy-resolve-failure-settings = Check the proxy settings to make sure that they are correct.
+neterror-proxy-resolve-failure-connection = Check to make sure your computer has a working network connection.
+neterror-proxy-resolve-failure-firewall = If your computer or network is protected by a firewall or proxy, make sure that { -brand-short-name } is permitted to access the web.
+neterror-proxy-connect-failure-settings = Check the proxy settings to make sure that they are correct.
+neterror-proxy-connect-failure-contact-admin = Contact your network administrator to make sure the proxy server is working.
+neterror-content-encoding-error = Please contact the web site owners to inform them of this problem.
+neterror-unsafe-content-type = Please contact the web site owners to inform them of this problem.
+neterror-nss-failure-not-verified = The page you are trying to view cannot be shown because the authenticity of the received data could not be verified.
+neterror-nss-failure-contact-website = Please contact the web site owners to inform them of this problem.
+# Variables:
+# $hostname (String) - Hostname of the website to which the user was trying to connect.
+certerror-intro = { -brand-short-name } detected a potential security threat and did not continue to <b>{ $hostname }</b>. If you visit this site, attackers could try to steal information like your passwords, emails, or credit card details.
+# Variables:
+# $hostname (String) - Hostname of the website to which the user was trying to connect.
+certerror-sts-intro = { -brand-short-name } detected a potential security threat and did not continue to <b>{ $hostname }</b> because this web site requires a secure connection.
+# Variables:
+# $hostname (String) - Hostname of the website to which the user was trying to connect.
+certerror-expired-cert-intro = { -brand-short-name } detected an issue and did not continue to <b>{ $hostname }</b>. The web site is either misconfigured or your computer clock is set to the wrong time.
+# Variables:
+# $hostname (String) - Hostname of the website to which the user was trying to connect.
+# $mitm (String) - The name of the software intercepting communications between you and the website (or “man in the middle”)
+certerror-mitm = <b>{ $hostname }</b> is most likely a safe site, but a secure connection could not be established. This issue is caused by <b>{ $mitm }</b>, which is either software on your computer or your network.
+neterror-corrupted-content-intro = The page you are trying to view cannot be shown because an error in the data transmission was detected.
+neterror-corrupted-content-contact-website = Please contact the web site owners to inform them of this problem.
+# Do not translate "SSL_ERROR_UNSUPPORTED_VERSION".
+neterror-sslv3-used = Advanced info: SSL_ERROR_UNSUPPORTED_VERSION
+# Variables:
+# $hostname (String) - Hostname of the website to which the user was trying to connect.
+neterror-inadequate-security-intro = <b>{ $hostname }</b> uses security technology that is outdated and vulnerable to attack. An attacker could easily reveal information which you thought to be safe. The web site administrator will need to fix the server first before you can visit the site.
+# Do not translate "NS_ERROR_NET_INADEQUATE_SECURITY".
+neterror-inadequate-security-code = Error code: NS_ERROR_NET_INADEQUATE_SECURITY
+# Variables:
+# $hostname (String) - Hostname of the website to which the user was trying to connect.
+# $now (Date) - The current datetime, to be formatted as a date
+neterror-clock-skew-error = Your computer thinks it is { DATETIME($now, dateStyle: "medium") }, which prevents { -brand-short-name } from connecting securely. To visit <b>{ $hostname }</b>, update your computer clock in your system settings to the current date, time, and time zone, and then refresh <b>{ $hostname }</b>.
+neterror-network-protocol-error-intro = The page you are trying to view cannot be shown because an error in the network protocol was detected.
+neterror-network-protocol-error-contact-website = Please contact the web site owners to inform them of this problem.
+certerror-expired-cert-second-para = It’s likely the web site’s certificate is expired, which prevents { -brand-short-name } from connecting securely. If you visit this site, attackers could try to steal information like your passwords, emails, or credit card details.
+certerror-expired-cert-sts-second-para = It’s likely the web site’s certificate is expired, which prevents { -brand-short-name } from connecting securely.
+certerror-what-can-you-do-about-it-title = What can you do about it?
+certerror-unknown-issuer-what-can-you-do-about-it-website = The issue is most likely with the web site, and there is nothing you can do to resolve it.
+certerror-unknown-issuer-what-can-you-do-about-it-contact-admin = If you are on a corporate network or using antivirus software, you can reach out to the support teams for assistance. You can also notify the web site’s administrator about the problem.
+# Variables:
+# $hostname (String) - Hostname of the website to which the user was trying to connect.
+# $now (Date) - The current datetime, to be formatted as a date
+certerror-expired-cert-what-can-you-do-about-it-clock = Your computer clock is set to { DATETIME($now, dateStyle: "medium") }. Make sure your computer is set to the correct date, time, and time zone in your system settings, and then refresh <b>{ $hostname }</b>.
+certerror-expired-cert-what-can-you-do-about-it-contact-website = If your clock is already set to the right time, the web site is likely misconfigured, and there is nothing you can do to resolve the issue. You can notify the web site’s administrator about the problem.
+certerror-bad-cert-domain-what-can-you-do-about-it = The issue is most likely with the web site, and there is nothing you can do to resolve it. You can notify the web site’s administrator about the problem.
+certerror-mitm-what-can-you-do-about-it-antivirus = If your antivirus software includes a feature that scans encrypted connections (often called “web scanning” or “https scanning”), you can disable that feature. If that doesn’t work, you can remove and reinstall the antivirus software.
+certerror-mitm-what-can-you-do-about-it-corporate = If you are on a corporate network, you can contact your IT department.
+# Variables:
+# $mitm (String) - The name of the software intercepting communications between you and the website (or “man in the middle”)
+certerror-mitm-what-can-you-do-about-it-attack = If you are not familiar with <b>{ $mitm }</b>, then this could be an attack and you should not continue to the site.
+# Variables:
+# $mitm (String) - The name of the software intercepting communications between you and the website (or “man in the middle”)
+certerror-mitm-what-can-you-do-about-it-attack-sts = If you are not familiar with <b>{ $mitm }</b>, then this could be an attack, and there is nothing you can do to access the site.
+# Variables:
+# $hostname (String) - Hostname of the website to which the user was trying to connect.
+certerror-what-should-i-do-bad-sts-cert-explanation = <b>{ $hostname }</b> has a security policy called HTTP Strict Transport Security (HSTS), which means that { -brand-short-name } can only connect to it securely. You can’t add an exception to visit this site.
diff --git a/l10n-en-GB/toolkit/toolkit/neterror/nsserrors.ftl b/l10n-en-GB/toolkit/toolkit/neterror/nsserrors.ftl
new file mode 100644
index 0000000000..bec065e11a
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/neterror/nsserrors.ftl
@@ -0,0 +1,349 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+# DO NOT ADD THINGS OTHER THAN ERROR MESSAGES HERE.
+# This file gets parsed into a JS dictionary of all known error message ids in
+# gen_aboutneterror_codes.py . If we end up needing fluent attributes or
+# refactoring them in some way, the script will need updating.
+
+psmerr-ssl-disabled = Can’t connect securely because the SSL protocol has been disabled.
+psmerr-ssl2-disabled = Can’t connect securely because the site uses an older, insecure version of the SSL protocol.
+# This is a multi-line message.
+psmerr-hostreusedissuerandserial =
+    You have received an invalid certificate.  Please contact the server administrator or email correspondent and give them the following information:
+    
+    Your certificate contains the same serial number as another certificate issued by the certificate authority.  Please get a new certificate containing a unique serial number.
+
+ssl-error-export-only-server = Unable to communicate securely. Peer does not support high-grade encryption.
+ssl-error-us-only-server = Unable to communicate securely. Peer requires high-grade encryption which is not supported.
+ssl-error-no-cypher-overlap = Cannot communicate securely with peer: no common encryption algorithm(s).
+ssl-error-no-certificate = Unable to find the certificate or key necessary for authentication.
+ssl-error-bad-certificate = Unable to communicate securely with peer: peers’s certificate was rejected.
+ssl-error-bad-client = The server has encountered bad data from the client.
+ssl-error-bad-server = The client has encountered bad data from the server.
+ssl-error-unsupported-certificate-type = Unsupported certificate type.
+ssl-error-unsupported-version = Peer using unsupported version of security protocol.
+ssl-error-wrong-certificate = Client authentication failed: private key in key database does not match public key in certificate database.
+ssl-error-bad-cert-domain = Unable to communicate securely with peer: requested domain name does not match the server’s certificate.
+ssl-error-post-warning = Unrecognised SSL error code.
+ssl-error-ssl2-disabled = Peer only supports SSL version 2, which is locally disabled.
+ssl-error-bad-mac-read = SSL received a record with an incorrect Message Authentication Code.
+ssl-error-bad-mac-alert = SSL peer reports incorrect Message Authentication Code.
+ssl-error-bad-cert-alert = SSL peer cannot verify your certificate.
+ssl-error-revoked-cert-alert = SSL peer rejected your certificate as revoked.
+ssl-error-expired-cert-alert = SSL peer rejected your certificate as expired.
+ssl-error-ssl-disabled = Cannot connect: SSL is disabled.
+ssl-error-fortezza-pqg = Cannot connect: SSL peer is in another FORTEZZA domain.
+ssl-error-unknown-cipher-suite = An unknown SSL cipher suite has been requested.
+ssl-error-no-ciphers-supported = No cipher suites are present and enabled in this program.
+ssl-error-bad-block-padding = SSL received a record with bad block padding.
+ssl-error-rx-record-too-long = SSL received a record that exceeded the maximum permissible length.
+ssl-error-tx-record-too-long = SSL attempted to send a record that exceeded the maximum permissible length.
+ssl-error-rx-malformed-hello-request = SSL received a malformed Hello Request handshake message.
+ssl-error-rx-malformed-client-hello = SSL received a malformed Client Hello handshake message.
+ssl-error-rx-malformed-server-hello = SSL received a malformed Server Hello handshake message.
+ssl-error-rx-malformed-certificate = SSL received a malformed Certificate handshake message.
+ssl-error-rx-malformed-server-key-exch = SSL received a malformed Server Key Exchange handshake message.
+ssl-error-rx-malformed-cert-request = SSL received a malformed Certificate Request handshake message.
+ssl-error-rx-malformed-hello-done = SSL received a malformed Server Hello Done handshake message.
+ssl-error-rx-malformed-cert-verify = SSL received a malformed Certificate Verify handshake message.
+ssl-error-rx-malformed-client-key-exch = SSL received a malformed Client Key Exchange handshake message.
+ssl-error-rx-malformed-finished = SSL received a malformed Finished handshake message.
+ssl-error-rx-malformed-change-cipher = SSL received a malformed Change Cipher Spec record.
+ssl-error-rx-malformed-alert = SSL received a malformed Alert record.
+ssl-error-rx-malformed-handshake = SSL received a malformed Handshake record.
+ssl-error-rx-malformed-application-data = SSL received a malformed Application Data record.
+ssl-error-rx-unexpected-hello-request = SSL received an unexpected Hello Request handshake message.
+ssl-error-rx-unexpected-client-hello = SSL received an unexpected Client Hello handshake message.
+ssl-error-rx-unexpected-server-hello = SSL received an unexpected Server Hello handshake message.
+ssl-error-rx-unexpected-certificate = SSL received an unexpected Certificate handshake message.
+ssl-error-rx-unexpected-server-key-exch = SSL received an unexpected Server Key Exchange handshake message.
+ssl-error-rx-unexpected-cert-request = SSL received an unexpected Certificate Request handshake message.
+ssl-error-rx-unexpected-hello-done = SSL received an unexpected Server Hello Done handshake message.
+ssl-error-rx-unexpected-cert-verify = SSL received an unexpected Certificate Verify handshake message.
+ssl-error-rx-unexpected-client-key-exch = SSL received an unexpected Client Key Exchange handshake message.
+ssl-error-rx-unexpected-finished = SSL received an unexpected Finished handshake message.
+ssl-error-rx-unexpected-change-cipher = SSL received an unexpected Change Cipher Spec record.
+ssl-error-rx-unexpected-alert = SSL received an unexpected Alert record.
+ssl-error-rx-unexpected-handshake = SSL received an unexpected Handshake record.
+ssl-error-rx-unexpected-application-data = SSL received an unexpected Application Data record.
+ssl-error-rx-unknown-record-type = SSL received a record with an unknown content type.
+ssl-error-rx-unknown-handshake = SSL received a handshake message with an unknown message type.
+ssl-error-rx-unknown-alert = SSL received an alert record with an unknown alert description.
+ssl-error-close-notify-alert = SSL peer has closed this connection.
+ssl-error-handshake-unexpected-alert = SSL peer was not expecting a handshake message it received.
+ssl-error-decompression-failure-alert = SSL peer was unable to successfully decompress an SSL record it received.
+ssl-error-handshake-failure-alert = SSL peer was unable to negotiate an acceptable set of security parameters.
+ssl-error-illegal-parameter-alert = SSL peer rejected a handshake message for unacceptable content.
+ssl-error-unsupported-cert-alert = SSL peer does not support certificates of the type it received.
+ssl-error-certificate-unknown-alert = SSL peer had some unspecified issue with the certificate it received.
+ssl-error-generate-random-failure = SSL experienced a failure of its random number generator.
+ssl-error-sign-hashes-failure = Unable to digitally sign data required to verify your certificate.
+ssl-error-extract-public-key-failure = SSL was unable to extract the public key from the peer’s certificate.
+ssl-error-server-key-exchange-failure = Unspecified failure while processing SSL Server Key Exchange handshake.
+ssl-error-client-key-exchange-failure = Unspecified failure while processing SSL Client Key Exchange handshake.
+ssl-error-encryption-failure = Bulk data encryption algorithm failed in selected cipher suite.
+ssl-error-decryption-failure = Bulk data decryption algorithm failed in selected cipher suite.
+ssl-error-socket-write-failure = Attempt to write encrypted data to underlying socket failed.
+ssl-error-md5-digest-failure = MD5 digest function failed.
+ssl-error-sha-digest-failure = SHA-1 digest function failed.
+ssl-error-mac-computation-failure = MAC computation failed.
+ssl-error-sym-key-context-failure = Failure to create Symmetric Key context.
+ssl-error-sym-key-unwrap-failure = Failure to unwrap the Symmetric key in Client Key Exchange message.
+ssl-error-pub-key-size-limit-exceeded = SSL Server attempted to use domestic-grade public key with export cipher suite.
+ssl-error-iv-param-failure = PKCS11 code failed to translate an IV into a param.
+ssl-error-init-cipher-suite-failure = Failed to initialise the selected cipher suite.
+ssl-error-session-key-gen-failure = Client failed to generate session keys for SSL session.
+ssl-error-no-server-key-for-alg = Server has no key for the attempted key exchange algorithm.
+ssl-error-token-insertion-removal = PKCS#11 token was inserted or removed while operation was in progress.
+ssl-error-token-slot-not-found = No PKCS#11 token could be found to do a required operation.
+ssl-error-no-compression-overlap = Cannot communicate securely with peer: no common compression algorithm(s).
+ssl-error-handshake-not-completed = Cannot initiate another SSL handshake until current handshake is complete.
+ssl-error-bad-handshake-hash-value = Received incorrect handshakes hash values from peer.
+ssl-error-cert-kea-mismatch = The certificate provided cannot be used with the selected key exchange algorithm.
+ssl-error-no-trusted-ssl-client-ca = No certificate authority is trusted for SSL client authentication.
+ssl-error-session-not-found = Client’s SSL session ID not found in server’s session cache.
+ssl-error-decryption-failed-alert = Peer was unable to decrypt an SSL record it received.
+ssl-error-record-overflow-alert = Peer received an SSL record that was longer than is permitted.
+ssl-error-unknown-ca-alert = Peer does not recognise and trust the CA that issued your certificate.
+ssl-error-access-denied-alert = Peer received a valid certificate, but access was denied.
+ssl-error-decode-error-alert = Peer could not decode an SSL handshake message.
+ssl-error-decrypt-error-alert = Peer reports failure of signature verification or key exchange.
+ssl-error-export-restriction-alert = Peer reports negotiation not in compliance with export regulations.
+ssl-error-protocol-version-alert = Peer reports incompatible or unsupported protocol version.
+ssl-error-insufficient-security-alert = Server requires ciphers more secure than those supported by client.
+ssl-error-internal-error-alert = Peer reports it experienced an internal error.
+ssl-error-user-canceled-alert = Peer user cancelled handshake.
+ssl-error-no-renegotiation-alert = Peer does not permit renegotiation of SSL security parameters.
+ssl-error-server-cache-not-configured = SSL server cache not configured and not disabled for this socket.
+ssl-error-unsupported-extension-alert = SSL peer does not support requested TLS hello extension.
+ssl-error-certificate-unobtainable-alert = SSL peer could not obtain your certificate from the supplied URL.
+ssl-error-unrecognized-name-alert = SSL peer has no certificate for the requested DNS name.
+ssl-error-bad-cert-status-response-alert = SSL peer was unable to get an OCSP response for its certificate.
+ssl-error-bad-cert-hash-value-alert = SSL peer reported bad certificate hash value.
+ssl-error-rx-unexpected-new-session-ticket = SSL received an unexpected New Session Ticket handshake message.
+ssl-error-rx-malformed-new-session-ticket = SSL received a malformed New Session Ticket handshake message.
+ssl-error-decompression-failure = SSL received a compressed record that could not be decompressed.
+ssl-error-renegotiation-not-allowed = Renegotiation is not allowed on this SSL socket.
+ssl-error-unsafe-negotiation = Peer attempted old style (potentially vulnerable) handshake.
+ssl-error-rx-unexpected-uncompressed-record = SSL received an unexpected uncompressed record.
+ssl-error-weak-server-ephemeral-dh-key = SSL received a weak ephemeral Diffie-Hellman key in Server Key Exchange handshake message.
+ssl-error-next-protocol-data-invalid = SSL received invalid NPN extension data.
+ssl-error-feature-not-supported-for-ssl2 = SSL feature not supported for SSL 2.0 connections.
+ssl-error-feature-not-supported-for-servers = SSL feature not supported for servers.
+ssl-error-feature-not-supported-for-clients = SSL feature not supported for clients.
+ssl-error-invalid-version-range = SSL version range is not valid.
+ssl-error-cipher-disallowed-for-version = SSL peer selected a cipher suite disallowed for the selected protocol version.
+ssl-error-rx-malformed-hello-verify-request = SSL received a malformed Hello Verify Request handshake message.
+ssl-error-rx-unexpected-hello-verify-request = SSL received an unexpected Hello Verify Request handshake message.
+ssl-error-feature-not-supported-for-version = SSL feature not supported for the protocol version.
+ssl-error-rx-unexpected-cert-status = SSL received an unexpected Certificate Status handshake message.
+ssl-error-unsupported-hash-algorithm = Unsupported hash algorithm used by TLS peer.
+ssl-error-digest-failure = Digest function failed.
+ssl-error-incorrect-signature-algorithm = Incorrect signature algorithm specified in a digitally-signed element.
+ssl-error-next-protocol-no-callback = The next protocol negotiation extension was enabled, but the callback was cleared prior to being needed.
+ssl-error-next-protocol-no-protocol = The server supports no protocols that the client advertises in the ALPN extension.
+ssl-error-inappropriate-fallback-alert = The server rejected the handshake because the client downgraded to a lower TLS version than the server supports.
+ssl-error-weak-server-cert-key = The server certificate included a public key that was too weak.
+ssl-error-rx-short-dtls-read = Not enough room in buffer for DTLS record.
+ssl-error-no-supported-signature-algorithm = No supported TLS signature algorithm was configured.
+ssl-error-unsupported-signature-algorithm = The peer used an unsupported combination of signature and hash algorithm.
+ssl-error-missing-extended-master-secret = The peer tried to resume without a correct extended_master_secret extension.
+ssl-error-unexpected-extended-master-secret = The peer tried to resume with an unexpected extended_master_secret extension.
+
+sec-error-io = An I/O error occurred during security authorisation.
+sec-error-library-failure = security library failure.
+sec-error-bad-data = security library: received bad data.
+sec-error-output-len = security library: output length error.
+sec-error-input-len = security library has experienced an input length error.
+sec-error-invalid-args = security library: invalid arguments.
+sec-error-invalid-algorithm = security library: invalid algorithm.
+sec-error-invalid-ava = security library: invalid AVA.
+sec-error-invalid-time = Improperly formatted time string.
+sec-error-bad-der = security library: improperly formatted DER-encoded message.
+sec-error-bad-signature = Peer’s certificate has an invalid signature.
+sec-error-expired-certificate = Peer’s Certificate has expired.
+sec-error-revoked-certificate = Peer’s Certificate has been revoked.
+sec-error-unknown-issuer = Peer’s Certificate issuer is not recognised.
+sec-error-bad-key = Peer’s public key is invalid.
+sec-error-bad-password = The security password entered is incorrect.
+sec-error-retry-password = New password entered incorrectly. Please try again.
+sec-error-no-nodelock = security library: no nodelock.
+sec-error-bad-database = security library: bad database.
+sec-error-no-memory = security library: memory allocation failure.
+sec-error-untrusted-issuer = Peer’s certificate issuer has been marked as not trusted by the user.
+sec-error-untrusted-cert = Peer’s certificate has been marked as not trusted by the user.
+sec-error-duplicate-cert = Certificate already exists in your database.
+sec-error-duplicate-cert-name = Downloaded certificate’s name duplicates one already in your database.
+sec-error-adding-cert = Error adding certificate to database.
+sec-error-filing-key = Error refiling the key for this certificate.
+sec-error-no-key = The private key for this certificate cannot be found in key database
+sec-error-cert-valid = This certificate is valid.
+sec-error-cert-not-valid = This certificate is not valid.
+sec-error-cert-no-response = Cert Library: No Response
+sec-error-expired-issuer-certificate = The certificate issuer’s certificate has expired. Check your system date and time.
+sec-error-crl-expired = The CRL for the certificate’s issuer has expired. Update it or check your system date and time.
+sec-error-crl-bad-signature = The CRL for the certificate’s issuer has an invalid signature.
+sec-error-crl-invalid = New CRL has an invalid format.
+sec-error-extension-value-invalid = Certificate extension value is invalid.
+sec-error-extension-not-found = Certificate extension not found.
+sec-error-ca-cert-invalid = Issuer certificate is invalid.
+sec-error-path-len-constraint-invalid = Certificate path length constraint is invalid.
+sec-error-cert-usages-invalid = Certificate usages field is invalid.
+sec-internal-only = **Internal ONLY module**
+sec-error-invalid-key = The key does not support the requested operation.
+sec-error-unknown-critical-extension = Certificate contains unknown critical extension.
+sec-error-old-crl = New CRL is not later than the current one.
+sec-error-no-email-cert = Not encrypted or signed: you do not yet have an email certificate.
+sec-error-no-recipient-certs-query = Not encrypted: you do not have certificates for each of the recipients.
+sec-error-not-a-recipient = Cannot decrypt: you are not a recipient, or matching certificate and private key not found.
+sec-error-pkcs7-keyalg-mismatch = Cannot decrypt: key encryption algorithm does not match your certificate.
+sec-error-pkcs7-bad-signature = Signature verification failed: no signer found, too many signers found, or improper or corrupted data.
+sec-error-unsupported-keyalg = Unsupported or unknown key algorithm.
+sec-error-decryption-disallowed = Cannot decrypt: encrypted using a disallowed algorithm or key size.
+sec-error-no-krl = No KRL for this site’s certificate has been found.
+sec-error-krl-expired = The KRL for this site’s certificate has expired.
+sec-error-krl-bad-signature = The KRL for this site’s certificate has an invalid signature.
+sec-error-revoked-key = The key for this site’s certificate has been revoked.
+sec-error-krl-invalid = New KRL has an invalid format.
+sec-error-need-random = security library: need random data.
+sec-error-no-module = security library: no security module can perform the requested operation.
+sec-error-no-token = The security card or token does not exist, needs to be initialised, or has been removed.
+sec-error-read-only = security library: read-only database.
+sec-error-no-slot-selected = No slot or token was selected.
+sec-error-cert-nickname-collision = A certificate with the same nickname already exists.
+sec-error-key-nickname-collision = A key with the same nickname already exists.
+sec-error-safe-not-created = error while creating safe object
+sec-error-baggage-not-created = error while creating baggage object
+sec-error-bad-export-algorithm = Required algorithm is not allowed.
+sec-error-exporting-certificates = Error attempting to export certificates.
+sec-error-importing-certificates = Error attempting to import certificates.
+sec-error-pkcs12-decoding-pfx = Unable to import. Decoding error. File not valid.
+sec-error-pkcs12-invalid-mac = Unable to import. Invalid MAC. Incorrect password or corrupt file.
+sec-error-pkcs12-unsupported-mac-algorithm = Unable to import. MAC algorithm not supported.
+sec-error-pkcs12-unsupported-transport-mode = Unable to import. Only password integrity and privacy modes supported.
+sec-error-pkcs12-corrupt-pfx-structure = Unable to import. File structure is corrupt.
+sec-error-pkcs12-unsupported-pbe-algorithm = Unable to import. Encryption algorithm not supported.
+sec-error-pkcs12-unsupported-version = Unable to import. File version not supported.
+sec-error-pkcs12-privacy-password-incorrect = Unable to import. Incorrect privacy password.
+sec-error-pkcs12-cert-collision = Unable to import. Same nickname already exists in database.
+sec-error-user-cancelled = The user pressed cancel.
+sec-error-pkcs12-duplicate-data = Not imported, already in database.
+sec-error-message-send-aborted = Message not sent.
+sec-error-inadequate-key-usage = Certificate key usage inadequate for attempted operation.
+sec-error-inadequate-cert-type = Certificate type not approved for application.
+sec-error-cert-addr-mismatch = Address in signing certificate does not match address in message headers.
+sec-error-pkcs12-unable-to-import-key = Unable to import. Error attempting to import private key.
+sec-error-pkcs12-importing-cert-chain = Unable to import. Error attempting to import certificate chain.
+sec-error-pkcs12-unable-to-locate-object-by-name = Unable to export. Unable to locate certificate or key by nickname.
+sec-error-pkcs12-unable-to-export-key = Unable to export. Private Key could not be located and exported.
+sec-error-pkcs12-unable-to-write = Unable to export. Unable to write the export file.
+sec-error-pkcs12-unable-to-read = Unable to import. Unable to read the import file.
+sec-error-pkcs12-key-database-not-initialized = Unable to export. Key database corrupt or deleted.
+sec-error-keygen-fail = Unable to generate public/private key pair.
+sec-error-invalid-password = Password entered is invalid. Please pick a different one.
+sec-error-retry-old-password = Old password entered incorrectly. Please try again.
+sec-error-bad-nickname = Certificate nickname already in use.
+sec-error-not-fortezza-issuer = Peer FORTEZZA chain has a non-FORTEZZA Certificate.
+sec-error-cannot-move-sensitive-key = A sensitive key cannot be moved to the slot where it is needed.
+sec-error-js-invalid-module-name = Invalid module name.
+sec-error-js-invalid-dll = Invalid module path/filename
+sec-error-js-add-mod-failure = Unable to add module
+sec-error-js-del-mod-failure = Unable to delete module
+sec-error-old-krl = New KRL is not later than the current one.
+sec-error-ckl-conflict = New CKL has different issuer than current CKL. Delete current CKL.
+sec-error-cert-not-in-name-space = The Certifying Authority for this certificate is not permitted to issue a certificate with this name.
+sec-error-krl-not-yet-valid = The key revocation list for this certificate is not yet valid.
+sec-error-crl-not-yet-valid = The certificate revocation list for this certificate is not yet valid.
+sec-error-unknown-cert = The requested certificate could not be found.
+sec-error-unknown-signer = The signer’s certificate could not be found.
+sec-error-cert-bad-access-location = The location for the certificate status server has invalid format.
+sec-error-ocsp-unknown-response-type = The OCSP response cannot be fully decoded; it is of an unknown type.
+sec-error-ocsp-bad-http-response = The OCSP server returned unexpected/invalid HTTP data.
+sec-error-ocsp-malformed-request = The OCSP server found the request to be corrupted or improperly formed.
+sec-error-ocsp-server-error = The OCSP server experienced an internal error.
+sec-error-ocsp-try-server-later = The OCSP server suggests trying again later.
+sec-error-ocsp-request-needs-sig = The OCSP server requires a signature on this request.
+sec-error-ocsp-unauthorized-request = The OCSP server has refused this request as unauthorised.
+sec-error-ocsp-unknown-response-status = The OCSP server returned an unrecognisable status.
+sec-error-ocsp-unknown-cert = The OCSP server has no status for the certificate.
+sec-error-ocsp-not-enabled = You must enable OCSP before performing this operation.
+sec-error-ocsp-no-default-responder = You must set the OCSP default responder before performing this operation.
+sec-error-ocsp-malformed-response = The response from the OCSP server was corrupted or improperly formed.
+sec-error-ocsp-unauthorized-response = The signer of the OCSP response is not authorised to give status for this certificate.
+sec-error-ocsp-future-response = The OCSP response is not yet valid (contains a date in the future).
+sec-error-ocsp-old-response = The OCSP response contains out-of-date information.
+sec-error-digest-not-found = The CMS or PKCS #7 Digest was not found in signed message.
+sec-error-unsupported-message-type = The CMS or PKCS #7 Message type is unsupported.
+sec-error-module-stuck = PKCS #11 module could not be removed because it is still in use.
+sec-error-bad-template = Could not decode ASN.1 data. Specified template was invalid.
+sec-error-crl-not-found = No matching CRL was found.
+sec-error-reused-issuer-and-serial = You are attempting to import a cert with the same issuer/serial as an existing cert, but that is not the same cert.
+sec-error-busy = NSS could not shutdown. Objects are still in use.
+sec-error-extra-input = DER-encoded message contained extra unused data.
+sec-error-unsupported-elliptic-curve = Unsupported elliptic curve.
+sec-error-unsupported-ec-point-form = Unsupported elliptic curve point form.
+sec-error-unrecognized-oid = Unrecognised Object Identifier.
+sec-error-ocsp-invalid-signing-cert = Invalid OCSP signing certificate in OCSP response.
+sec-error-revoked-certificate-crl = Certificate is revoked in issuer’s certificate revocation list.
+sec-error-revoked-certificate-ocsp = Issuer’s OCSP responder reports certificate is revoked.
+sec-error-crl-invalid-version = Issuer’s Certificate Revocation List has an unknown version number.
+sec-error-crl-v1-critical-extension = Issuer’s V1 Certificate Revocation List has a critical extension.
+sec-error-crl-unknown-critical-extension = Issuer’s V2 Certificate Revocation List has an unknown critical extension.
+sec-error-unknown-object-type = Unknown object type specified.
+sec-error-incompatible-pkcs11 = PKCS #11 driver violates the spec in an incompatible way.
+sec-error-no-event = No new slot event is available at this time.
+sec-error-crl-already-exists = CRL already exists.
+sec-error-not-initialized = NSS is not initialised.
+sec-error-token-not-logged-in = The operation failed because the PKCS#11 token is not logged in.
+sec-error-ocsp-responder-cert-invalid = Configured OCSP responder’s certificate is invalid.
+sec-error-ocsp-bad-signature = OCSP response has an invalid signature.
+sec-error-out-of-search-limits = Certificate validation search is out of search limits
+sec-error-invalid-policy-mapping = Policy mapping contains anypolicy
+sec-error-policy-validation-failed = Certificate chain fails policy validation
+sec-error-unknown-aia-location-type = Unknown location type in cert AIA extension
+sec-error-bad-http-response = Server returned bad HTTP response
+sec-error-bad-ldap-response = Server returned bad LDAP response
+sec-error-failed-to-encode-data = Failed to encode data with ASN1 encoder
+sec-error-bad-info-access-location = Bad information access location in certificate extension
+sec-error-libpkix-internal = Libpkix internal error occured during certificate validation.
+sec-error-pkcs11-general-error = A PKCS #11 module returned CKR_GENERAL_ERROR, indicating that an unrecoverable error has occurred.
+sec-error-pkcs11-function-failed = A PKCS #11 module returned CKR_FUNCTION_FAILED, indicating that the requested function could not be performed. Trying the same operation again might succeed.
+sec-error-pkcs11-device-error = A PKCS #11 module returned CKR_DEVICE_ERROR, indicating that a problem has occurred with the token or slot.
+sec-error-bad-info-access-method = Unknown information access method in certificate extension.
+sec-error-crl-import-failed = Error attempting to import a CRL.
+sec-error-expired-password = The password expired.
+sec-error-locked-password = The password is locked.
+sec-error-unknown-pkcs11-error = Unknown PKCS #11 error.
+sec-error-bad-crl-dp-url = Invalid or unsupported URL in CRL distribution point name.
+sec-error-cert-signature-algorithm-disabled = The certificate was signed using a signature algorithm that is disabled because it is not secure.
+
+mozilla-pkix-error-key-pinning-failure = The server uses key pinning (HPKP) but no trusted certificate chain could be constructed that matches the pinset. Key pinning violations cannot be overridden.
+mozilla-pkix-error-ca-cert-used-as-end-entity = The server uses a certificate with a basic constraints extension identifying it as a certificate authority. For a properly-issued certificate, this should not be the case.
+mozilla-pkix-error-inadequate-key-size = The server presented a certificate with a key size that is too small to establish a secure connection.
+mozilla-pkix-error-v1-cert-used-as-ca = An X.509 version 1 certificate that is not a trust anchor was used to issue the server’s certificate. X.509 version 1 certificates are deprecated and should not be used to sign other certificates.
+mozilla-pkix-error-not-yet-valid-certificate = The server presented a certificate that is not yet valid.
+mozilla-pkix-error-not-yet-valid-issuer-certificate = A certificate that is not yet valid was used to issue the server’s certificate.
+mozilla-pkix-error-signature-algorithm-mismatch = The signature algorithm in the signature field of the certificate does not match the algorithm in its signatureAlgorithm field.
+mozilla-pkix-error-ocsp-response-for-cert-missing = The OCSP response does not include a status for the certificate being verified.
+mozilla-pkix-error-validity-too-long = The server presented a certificate that is valid for too long.
+mozilla-pkix-error-required-tls-feature-missing = A required TLS feature is missing.
+mozilla-pkix-error-invalid-integer-encoding = The server presented a certificate that contains an invalid encoding of an integer. Common causes include negative serial numbers, negative RSA moduli, and encodings that are longer than necessary.
+mozilla-pkix-error-empty-issuer-name = The server presented a certificate with an empty issuer distinguished name.
+mozilla-pkix-error-additional-policy-constraint-failed = An additional policy constraint failed when validating this certificate.
+mozilla-pkix-error-self-signed-cert = The certificate is not trusted because it is self-signed.
+
+xp-java-remove-principal-error = Couldn’t remove the principal
+xp-java-delete-privilege-error = Couldn’t delete the privilege
+xp-java-cert-not-exists-error = This principal doesn’t have a certificate
+
+xp-sec-fortezza-bad-card = Fortezza card has not been properly initialised. Please remove it and return it to your issuer.
+xp-sec-fortezza-no-card = No Fortezza cards Found
+xp-sec-fortezza-none-selected = No Fortezza card selected
+xp-sec-fortezza-more-info = Please select a personality to get more info on
+xp-sec-fortezza-person-not-found = Personality not found
+xp-sec-fortezza-no-more-info = No more information on that personality
+xp-sec-fortezza-bad-pin = Invalid Pin
+xp-sec-fortezza-person-error = Couldn’t initialise Fortezza personalities.
diff --git a/l10n-en-GB/toolkit/toolkit/passwordmgr/passwordmgr.ftl b/l10n-en-GB/toolkit/toolkit/passwordmgr/passwordmgr.ftl
new file mode 100644
index 0000000000..9b3074b3b7
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/passwordmgr/passwordmgr.ftl
@@ -0,0 +1,39 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+## Save and update password doorhanger
+
+# Variables
+#   $host (String) - Hostname for which the password is saved for.
+password-manager-save-password-message = Save password for { $host }?
+password-manager-save-password-button-deny =
+    .label = Not now
+    .accesskey = N
+password-manager-save-password-button-allow =
+    .label = Save
+    .accesskey = S
+password-manager-save-password-button-never =
+    .label = Never save
+    .accesskey = e
+# Variables
+#   $host (String) - Hostname for which the password is updated for.
+password-manager-update-password-message = Update password for { $host }?
+password-manager-update-password-button-delete =
+    .label = Remove saved password
+    .accesskey = R
+password-manager-update-login-add-username = Add username to saved password?
+password-manager-password-password-button-allow =
+    .label = Update
+    .accesskey = U
+password-manager-update-password-button-deny =
+    .label = Don’t update
+    .accesskey = D
+# This is displayed in place of the username when it is missing.
+password-manager-no-username-placeholder = No username
+password-manager-toggle-password =
+    .label = Show password
+    .accesskey = h
+password-manager-confirm-password-change = Confirm Password Change
+password-manager-select-username = Select which login to update:
diff --git a/l10n-en-GB/toolkit/toolkit/payments/payments.ftl b/l10n-en-GB/toolkit/toolkit/payments/payments.ftl
new file mode 100644
index 0000000000..22302a5a90
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/payments/payments.ftl
@@ -0,0 +1,51 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+# This value isn't used directly, but is defined to avoid duplication
+# in the "credit-card-label-*" strings.
+#
+# Variables:
+#   $month (String): Numeric month the credit card expires
+#   $year (String): Four-digit year the credit card expires
+credit-card-expiration = Expires on { $month }/{ $year }
+
+## These labels serve as a description of a credit card.
+## The description must include a credit card number, and may optionally
+## include a cardholder name, an expiration date, or both, so we have
+## four variations.
+
+# Label for a credit card with a number only
+#
+# Variables:
+#   $number (String): Partially-redacted credit card number
+#   $type (String): Credit card type
+credit-card-label-number-2 = { $number }
+    .aria-label = { $type } { credit-card-label-number-2 }
+
+# Label for a credit card with a number and name
+#
+# Variables:
+#   $number (String): Partially-redacted credit card number
+#   $name (String): Cardholder name
+#   $type (String): Credit card type
+credit-card-label-number-name-2 = { $number }, { $name }
+    .aria-label = { $type } { credit-card-label-number-name-2 }
+
+# Label for a credit card with a number and expiration date
+#
+# Variables:
+#   $number (String): Partially-redacted credit card number
+#   $type (String): Credit card type
+credit-card-label-number-expiration-2 = { $number }, { credit-card-expiration }
+    .aria-label = { $type } { credit-card-label-number-expiration-2 }
+
+# Label for a credit card with a number, name, and expiration date
+#
+# Variables:
+#   $number (String): Partially-redacted credit card number
+#   $name (String): Cardholder name
+#   $type (String): Credit card type
+credit-card-label-number-name-expiration-2 = { $number }, { $name }, { credit-card-expiration }
+    .aria-label = { $type } { credit-card-label-number-name-expiration-2 }
diff --git a/l10n-en-GB/toolkit/toolkit/pdfviewer/viewer.ftl b/l10n-en-GB/toolkit/toolkit/pdfviewer/viewer.ftl
new file mode 100644
index 0000000000..b581d72378
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/pdfviewer/viewer.ftl
@@ -0,0 +1,384 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+## Main toolbar buttons (tooltips and alt text for images)
+
+pdfjs-previous-button =
+    .title = Previous Page
+pdfjs-previous-button-label = Previous
+pdfjs-next-button =
+    .title = Next Page
+pdfjs-next-button-label = Next
+# .title: Tooltip for the pageNumber input.
+pdfjs-page-input =
+    .title = Page
+# Variables:
+#   $pagesCount (Number) - the total number of pages in the document
+# This string follows an input field with the number of the page currently displayed.
+pdfjs-of-pages = of { $pagesCount }
+# Variables:
+#   $pageNumber (Number) - the currently visible page
+#   $pagesCount (Number) - the total number of pages in the document
+pdfjs-page-of-pages = ({ $pageNumber } of { $pagesCount })
+pdfjs-zoom-out-button =
+    .title = Zoom Out
+pdfjs-zoom-out-button-label = Zoom Out
+pdfjs-zoom-in-button =
+    .title = Zoom In
+pdfjs-zoom-in-button-label = Zoom In
+pdfjs-zoom-select =
+    .title = Zoom
+pdfjs-presentation-mode-button =
+    .title = Switch to Presentation Mode
+pdfjs-presentation-mode-button-label = Presentation Mode
+pdfjs-open-file-button =
+    .title = Open File
+pdfjs-open-file-button-label = Open
+pdfjs-print-button =
+    .title = Print
+pdfjs-print-button-label = Print
+pdfjs-save-button =
+    .title = Save
+pdfjs-save-button-label = Save
+# Used in Firefox for Android as a tooltip for the download button (“download” is a verb).
+pdfjs-download-button =
+    .title = Download
+# Used in Firefox for Android as a label for the download button (“download” is a verb).
+# Length of the translation matters since we are in a mobile context, with limited screen estate.
+pdfjs-download-button-label = Download
+pdfjs-bookmark-button =
+    .title = Current Page (View URL from Current Page)
+pdfjs-bookmark-button-label = Current Page
+# Used in Firefox for Android.
+pdfjs-open-in-app-button =
+    .title = Open in app
+# Used in Firefox for Android.
+# Length of the translation matters since we are in a mobile context, with limited screen estate.
+pdfjs-open-in-app-button-label = Open in app
+
+##  Secondary toolbar and context menu
+
+pdfjs-tools-button =
+    .title = Tools
+pdfjs-tools-button-label = Tools
+pdfjs-first-page-button =
+    .title = Go to First Page
+pdfjs-first-page-button-label = Go to First Page
+pdfjs-last-page-button =
+    .title = Go to Last Page
+pdfjs-last-page-button-label = Go to Last Page
+pdfjs-page-rotate-cw-button =
+    .title = Rotate Clockwise
+pdfjs-page-rotate-cw-button-label = Rotate Clockwise
+pdfjs-page-rotate-ccw-button =
+    .title = Rotate Anti-Clockwise
+pdfjs-page-rotate-ccw-button-label = Rotate Anti-Clockwise
+pdfjs-cursor-text-select-tool-button =
+    .title = Enable Text Selection Tool
+pdfjs-cursor-text-select-tool-button-label = Text Selection Tool
+pdfjs-cursor-hand-tool-button =
+    .title = Enable Hand Tool
+pdfjs-cursor-hand-tool-button-label = Hand Tool
+pdfjs-scroll-page-button =
+    .title = Use Page Scrolling
+pdfjs-scroll-page-button-label = Page Scrolling
+pdfjs-scroll-vertical-button =
+    .title = Use Vertical Scrolling
+pdfjs-scroll-vertical-button-label = Vertical Scrolling
+pdfjs-scroll-horizontal-button =
+    .title = Use Horizontal Scrolling
+pdfjs-scroll-horizontal-button-label = Horizontal Scrolling
+pdfjs-scroll-wrapped-button =
+    .title = Use Wrapped Scrolling
+pdfjs-scroll-wrapped-button-label = Wrapped Scrolling
+pdfjs-spread-none-button =
+    .title = Do not join page spreads
+pdfjs-spread-none-button-label = No Spreads
+pdfjs-spread-odd-button =
+    .title = Join page spreads starting with odd-numbered pages
+pdfjs-spread-odd-button-label = Odd Spreads
+pdfjs-spread-even-button =
+    .title = Join page spreads starting with even-numbered pages
+pdfjs-spread-even-button-label = Even Spreads
+
+## Document properties dialog
+
+pdfjs-document-properties-button =
+    .title = Document Properties…
+pdfjs-document-properties-button-label = Document Properties…
+pdfjs-document-properties-file-name = File name:
+pdfjs-document-properties-file-size = File size:
+# Variables:
+#   $size_kb (Number) - the PDF file size in kilobytes
+#   $size_b (Number) - the PDF file size in bytes
+pdfjs-document-properties-kb = { $size_kb } kB ({ $size_b } bytes)
+# Variables:
+#   $size_mb (Number) - the PDF file size in megabytes
+#   $size_b (Number) - the PDF file size in bytes
+pdfjs-document-properties-mb = { $size_mb } MB ({ $size_b } bytes)
+pdfjs-document-properties-title = Title:
+pdfjs-document-properties-author = Author:
+pdfjs-document-properties-subject = Subject:
+pdfjs-document-properties-keywords = Keywords:
+pdfjs-document-properties-creation-date = Creation Date:
+pdfjs-document-properties-modification-date = Modification Date:
+# Variables:
+#   $date (Date) - the creation/modification date of the PDF file
+#   $time (Time) - the creation/modification time of the PDF file
+pdfjs-document-properties-date-string = { $date }, { $time }
+pdfjs-document-properties-creator = Creator:
+pdfjs-document-properties-producer = PDF Producer:
+pdfjs-document-properties-version = PDF Version:
+pdfjs-document-properties-page-count = Page Count:
+pdfjs-document-properties-page-size = Page Size:
+pdfjs-document-properties-page-size-unit-inches = in
+pdfjs-document-properties-page-size-unit-millimeters = mm
+pdfjs-document-properties-page-size-orientation-portrait = portrait
+pdfjs-document-properties-page-size-orientation-landscape = landscape
+pdfjs-document-properties-page-size-name-a-three = A3
+pdfjs-document-properties-page-size-name-a-four = A4
+pdfjs-document-properties-page-size-name-letter = Letter
+pdfjs-document-properties-page-size-name-legal = Legal
+
+## Variables:
+##   $width (Number) - the width of the (current) page
+##   $height (Number) - the height of the (current) page
+##   $unit (String) - the unit of measurement of the (current) page
+##   $name (String) - the name of the (current) page
+##   $orientation (String) - the orientation of the (current) page
+
+pdfjs-document-properties-page-size-dimension-string = { $width } × { $height } { $unit } ({ $orientation })
+pdfjs-document-properties-page-size-dimension-name-string = { $width } × { $height } { $unit } ({ $name }, { $orientation })
+
+##
+
+# The linearization status of the document; usually called "Fast Web View" in
+# English locales of Adobe software.
+pdfjs-document-properties-linearized = Fast Web View:
+pdfjs-document-properties-linearized-yes = Yes
+pdfjs-document-properties-linearized-no = No
+pdfjs-document-properties-close-button = Close
+
+## Print
+
+pdfjs-print-progress-message = Preparing document for printing…
+# Variables:
+#   $progress (Number) - percent value
+pdfjs-print-progress-percent = { $progress }%
+pdfjs-print-progress-close-button = Cancel
+pdfjs-printing-not-supported = Warning: Printing is not fully supported by this browser.
+pdfjs-printing-not-ready = Warning: The PDF is not fully loaded for printing.
+
+## Tooltips and alt text for side panel toolbar buttons
+
+pdfjs-toggle-sidebar-button =
+    .title = Toggle Sidebar
+pdfjs-toggle-sidebar-notification-button =
+    .title = Toggle Sidebar (document contains outline/attachments/layers)
+pdfjs-toggle-sidebar-button-label = Toggle Sidebar
+pdfjs-document-outline-button =
+    .title = Show Document Outline (double-click to expand/collapse all items)
+pdfjs-document-outline-button-label = Document Outline
+pdfjs-attachments-button =
+    .title = Show Attachments
+pdfjs-attachments-button-label = Attachments
+pdfjs-layers-button =
+    .title = Show Layers (double-click to reset all layers to the default state)
+pdfjs-layers-button-label = Layers
+pdfjs-thumbs-button =
+    .title = Show Thumbnails
+pdfjs-thumbs-button-label = Thumbnails
+pdfjs-current-outline-item-button =
+    .title = Find Current Outline Item
+pdfjs-current-outline-item-button-label = Current Outline Item
+pdfjs-findbar-button =
+    .title = Find in Document
+pdfjs-findbar-button-label = Find
+pdfjs-additional-layers = Additional Layers
+
+## Thumbnails panel item (tooltip and alt text for images)
+
+# Variables:
+#   $page (Number) - the page number
+pdfjs-thumb-page-title =
+    .title = Page { $page }
+# Variables:
+#   $page (Number) - the page number
+pdfjs-thumb-page-canvas =
+    .aria-label = Thumbnail of Page { $page }
+
+## Find panel button title and messages
+
+pdfjs-find-input =
+    .title = Find
+    .placeholder = Find in document…
+pdfjs-find-previous-button =
+    .title = Find the previous occurrence of the phrase
+pdfjs-find-previous-button-label = Previous
+pdfjs-find-next-button =
+    .title = Find the next occurrence of the phrase
+pdfjs-find-next-button-label = Next
+pdfjs-find-highlight-checkbox = Highlight All
+pdfjs-find-match-case-checkbox-label = Match Case
+pdfjs-find-match-diacritics-checkbox-label = Match Diacritics
+pdfjs-find-entire-word-checkbox-label = Whole Words
+pdfjs-find-reached-top = Reached top of document, continued from bottom
+pdfjs-find-reached-bottom = Reached end of document, continued from top
+# Variables:
+#   $current (Number) - the index of the currently active find result
+#   $total (Number) - the total number of matches in the document
+pdfjs-find-match-count =
+    { $total ->
+        [one] { $current } of { $total } match
+       *[other] { $current } of { $total } matches
+    }
+# Variables:
+#   $limit (Number) - the maximum number of matches
+pdfjs-find-match-count-limit =
+    { $limit ->
+        [one] More than { $limit } match
+       *[other] More than { $limit } matches
+    }
+pdfjs-find-not-found = Phrase not found
+
+## Predefined zoom values
+
+pdfjs-page-scale-width = Page Width
+pdfjs-page-scale-fit = Page Fit
+pdfjs-page-scale-auto = Automatic Zoom
+pdfjs-page-scale-actual = Actual Size
+# Variables:
+#   $scale (Number) - percent value for page scale
+pdfjs-page-scale-percent = { $scale }%
+
+## PDF page
+
+# Variables:
+#   $page (Number) - the page number
+pdfjs-page-landmark =
+    .aria-label = Page { $page }
+
+## Loading indicator messages
+
+pdfjs-loading-error = An error occurred while loading the PDF.
+pdfjs-invalid-file-error = Invalid or corrupted PDF file.
+pdfjs-missing-file-error = Missing PDF file.
+pdfjs-unexpected-response-error = Unexpected server response.
+pdfjs-rendering-error = An error occurred while rendering the page.
+
+## Annotations
+
+# Variables:
+#   $date (Date) - the modification date of the annotation
+#   $time (Time) - the modification time of the annotation
+pdfjs-annotation-date-string = { $date }, { $time }
+# .alt: This is used as a tooltip.
+# Variables:
+#   $type (String) - an annotation type from a list defined in the PDF spec
+# (32000-1:2008 Table 169 – Annotation types).
+# Some common types are e.g.: "Check", "Text", "Comment", "Note"
+pdfjs-text-annotation-type =
+    .alt = [{ $type } Annotation]
+
+## Password
+
+pdfjs-password-label = Enter the password to open this PDF file.
+pdfjs-password-invalid = Invalid password. Please try again.
+pdfjs-password-ok-button = OK
+pdfjs-password-cancel-button = Cancel
+pdfjs-web-fonts-disabled = Web fonts are disabled: unable to use embedded PDF fonts.
+
+## Editing
+
+pdfjs-editor-free-text-button =
+    .title = Text
+pdfjs-editor-free-text-button-label = Text
+pdfjs-editor-ink-button =
+    .title = Draw
+pdfjs-editor-ink-button-label = Draw
+pdfjs-editor-stamp-button =
+    .title = Add or edit images
+pdfjs-editor-stamp-button-label = Add or edit images
+pdfjs-editor-remove-button =
+    .title = Remove
+
+## Remove button for the various kind of editor.
+
+pdfjs-editor-remove-ink-button =
+    .title = Remove drawing
+pdfjs-editor-remove-freetext-button =
+    .title = Remove text
+pdfjs-editor-remove-stamp-button =
+    .title = Remove image
+pdfjs-editor-remove-highlight-button =
+    .title = Remove highlight
+
+##
+
+# Editor Parameters
+pdfjs-editor-free-text-color-input = Colour
+pdfjs-editor-free-text-size-input = Size
+pdfjs-editor-ink-color-input = Colour
+pdfjs-editor-ink-thickness-input = Thickness
+pdfjs-editor-ink-opacity-input = Opacity
+pdfjs-editor-stamp-add-image-button =
+    .title = Add image
+pdfjs-editor-stamp-add-image-button-label = Add image
+pdfjs-free-text =
+    .aria-label = Text Editor
+pdfjs-free-text-default-content = Start typing…
+pdfjs-ink =
+    .aria-label = Draw Editor
+pdfjs-ink-canvas =
+    .aria-label = User-created image
+
+## Alt-text dialog
+
+# Alternative text (alt text) helps when people can't see the image.
+pdfjs-editor-alt-text-button-label = Alt text
+pdfjs-editor-alt-text-edit-button-label = Edit alt text
+pdfjs-editor-alt-text-dialog-label = Choose an option
+pdfjs-editor-alt-text-dialog-description = Alt text (alternative text) helps when people can’t see the image or when it doesn’t load.
+pdfjs-editor-alt-text-add-description-label = Add a description
+pdfjs-editor-alt-text-add-description-description = Aim for 1-2 sentences that describe the subject, setting, or actions.
+pdfjs-editor-alt-text-mark-decorative-label = Mark as decorative
+pdfjs-editor-alt-text-mark-decorative-description = This is used for ornamental images, like borders or watermarks.
+pdfjs-editor-alt-text-cancel-button = Cancel
+pdfjs-editor-alt-text-save-button = Save
+pdfjs-editor-alt-text-decorative-tooltip = Marked as decorative
+# .placeholder: This is a placeholder for the alt text input area
+pdfjs-editor-alt-text-textarea =
+    .placeholder = For example, “A young man sits down at a table to eat a meal”
+
+## Editor resizers
+## This is used in an aria label to help to understand the role of the resizer.
+
+pdfjs-editor-resizer-label-top-left = Top left corner — resize
+pdfjs-editor-resizer-label-top-middle = Top middle — resize
+pdfjs-editor-resizer-label-top-right = Top right corner — resize
+pdfjs-editor-resizer-label-middle-right = Middle right — resize
+pdfjs-editor-resizer-label-bottom-right = Bottom right corner — resize
+pdfjs-editor-resizer-label-bottom-middle = Bottom middle — resize
+pdfjs-editor-resizer-label-bottom-left = Bottom left corner — resize
+pdfjs-editor-resizer-label-middle-left = Middle left — resize
+
+## Color picker
+
+# This means "Color used to highlight text"
+pdfjs-editor-highlight-colorpicker-label = Highlight colour
+pdfjs-editor-colorpicker-button =
+    .title = Change colour
+pdfjs-editor-colorpicker-dropdown =
+    .aria-label = Colour choices
+pdfjs-editor-colorpicker-yellow =
+    .title = Yellow
+pdfjs-editor-colorpicker-green =
+    .title = Green
+pdfjs-editor-colorpicker-blue =
+    .title = Blue
+pdfjs-editor-colorpicker-pink =
+    .title = Pink
+pdfjs-editor-colorpicker-red =
+    .title = Red
diff --git a/l10n-en-GB/toolkit/toolkit/pictureinpicture/pictureinpicture.ftl b/l10n-en-GB/toolkit/toolkit/pictureinpicture/pictureinpicture.ftl
new file mode 100644
index 0000000000..f2f9f8e3e0
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/pictureinpicture/pictureinpicture.ftl
@@ -0,0 +1,86 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+pictureinpicture-player-title = Picture-in-Picture
+
+## Variables:
+##   $shortcut (String) - Keyboard shortcut to execute the command.
+
+## Note that this uses .tooltip rather than the standard '.title'
+## or '.tooltiptext' -  but it has the same effect. Code in the
+## picture-in-picture window will read and copy this to an in-document
+## DOM node that then shows the tooltip.
+##
+## Variables:
+##   $shortcut (String) - Keyboard shortcut to execute the command.
+
+pictureinpicture-pause-btn =
+    .aria-label = Pause
+    .tooltip = Pause (Spacebar)
+pictureinpicture-play-btn =
+    .aria-label = Play
+    .tooltip = Play (Spacebar)
+
+pictureinpicture-mute-btn =
+    .aria-label = Mute
+    .tooltip = Mute ({ $shortcut })
+pictureinpicture-unmute-btn =
+    .aria-label = Unmute
+    .tooltip = Unmute ({ $shortcut })
+
+pictureinpicture-unpip-btn =
+    .aria-label = Send back to tab
+    .tooltip = Back to tab
+
+pictureinpicture-close-btn =
+    .aria-label = Close
+    .tooltip = Close ({ $shortcut })
+
+pictureinpicture-subtitles-btn =
+    .aria-label = Subtitles
+    .tooltip = Subtitles
+
+pictureinpicture-fullscreen-btn2 =
+    .aria-label = Fullscreen
+    .tooltip = Fullscreen (double-click or { $shortcut })
+
+pictureinpicture-exit-fullscreen-btn2 =
+    .aria-label = Exit fullscreen
+    .tooltip = Exit fullscreen (double-click or { $shortcut })
+
+##
+
+# Keyboard shortcut to toggle fullscreen mode when Picture-in-Picture is open.
+pictureinpicture-toggle-fullscreen-shortcut =
+    .key = F
+
+## Note that this uses .tooltip rather than the standard '.title'
+## or '.tooltiptext' -  but it has the same effect. Code in the
+## picture-in-picture window will read and copy this to an in-document
+## DOM node that then shows the tooltip.
+
+pictureinpicture-seekbackward-btn =
+    .aria-label = Backwards
+    .tooltip = Backwards (←)
+
+pictureinpicture-seekforward-btn =
+    .aria-label = Forwards
+    .tooltip = Forwards (→)
+
+##
+
+# This string is never displayed on the window. Is intended to be announced by
+# a screen reader whenever a user opens the subtitles settings panel
+# after selecting the subtitles button.
+pictureinpicture-subtitles-panel-accessible = Subtitles settings
+
+pictureinpicture-subtitles-label = Subtitles
+
+pictureinpicture-font-size-label = Font size
+
+pictureinpicture-font-size-small = Small
+
+pictureinpicture-font-size-medium = Medium
+
+pictureinpicture-font-size-large = Large
diff --git a/l10n-en-GB/toolkit/toolkit/preferences/preferences.ftl b/l10n-en-GB/toolkit/toolkit/preferences/preferences.ftl
new file mode 100644
index 0000000000..e9fec6800b
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/preferences/preferences.ftl
@@ -0,0 +1,39 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+password-not-set =
+    .value = (not set)
+
+failed-pp-change = Unable to change Primary Password.
+incorrect-pp = You did not enter the correct current Primary Password. Please try again.
+pp-change-ok = Primary Password successfully changed.
+
+settings-pp-erased-ok = You have deleted your Primary Password. Stored passwords and certificate private keys managed by { -brand-short-name } will not be protected.
+settings-pp-not-wanted = Warning! You have decided not to use a Primary Password. Stored passwords and certificate private keys managed by { -brand-short-name } will not be protected.
+
+pp-change2empty-in-fips-mode = You are currently in FIPS mode. FIPS requires a non-empty Primary Password.
+pw-change-success-title = Password Change Succeeded
+pw-change-failed-title = Password Change Failed
+pw-remove-button =
+    .label = Remove
+
+primary-password-dialog =
+    .title = Primary Password
+set-password-old-password = Current password:
+set-password-new-password = Enter new password:
+set-password-reenter-password = Re-enter password:
+set-password-meter = Password quality meter
+set-password-meter-loading = Loading
+primary-password-admin = Your administrator requires that you have a Primary Password set in order to save logins and passwords.
+primary-password-description = A Primary Password is used to protect some sensitive information, like logins and passwords, on this device. If you create a Primary Password you will be asked to enter it once per session when { -brand-short-name } retrieves saved information protected by the password.
+primary-password-warning = Please make sure you remember the Primary Password you have set. If you forget your Primary Password, you will be unable to access any of the information protected by it on this device.
+
+remove-primary-password =
+    .title = Remove Primary Password
+remove-info =
+    .value = You must enter your current password to proceed:
+remove-primary-password-warning1 = Your Primary Password is used to protect sensitive information like logins and passwords.
+remove-primary-password-warning2 = If you remove your Primary Password your information will not be protected if your computer is compromised.
+remove-password-old-password =
+    .value = Current password:
diff --git a/l10n-en-GB/toolkit/toolkit/printing/printDialogs.ftl b/l10n-en-GB/toolkit/toolkit/printing/printDialogs.ftl
new file mode 100644
index 0000000000..a9833f4ba4
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/printing/printDialogs.ftl
@@ -0,0 +1,112 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+print-setup =
+    .title = Page Setup
+custom-prompt-title = Custom…
+custom-prompt-prompt = Enter your custom header/footer text
+basic-tab =
+    .label = Format & Options
+advanced-tab =
+    .label = Margins & Header/Footer
+format-group-label =
+    .value = Format
+orientation-label =
+    .value = Orientation:
+portrait =
+    .label = Portrait
+    .accesskey = P
+landscape =
+    .label = Landscape
+    .accesskey = L
+scale =
+    .label = Scale:
+    .accesskey = S
+scale-percent =
+    .value = %
+shrink-to-fit =
+    .label = Shrink to fit Page Width
+    .accesskey = W
+options-group-label =
+    .value = Options
+print-bg =
+    .label = Print Background (colours & images)
+    .accesskey = B
+margin-group-label-inches =
+    .value = Margins (inches)
+margin-group-label-metric =
+    .value = Margins (millimetres)
+margin-top =
+    .value = Top:
+    .accesskey = T
+margin-top-invisible =
+    .value = Top:
+margin-bottom =
+    .value = Bottom:
+    .accesskey = B
+margin-bottom-invisible =
+    .value = Bottom:
+margin-left =
+    .value = Left:
+    .accesskey = L
+margin-left-invisible =
+    .value = Left:
+margin-right =
+    .value = Right:
+    .accesskey = R
+margin-right-invisible =
+    .value = Right:
+header-footer-label =
+    .value = Headers & Footers
+hf-left-label =
+    .value = Left:
+hf-center-label =
+    .value = Centre:
+hf-right-label =
+    .value = Right:
+header-left-tip =
+    .tooltiptext = Left header
+header-center-tip =
+    .tooltiptext = Centre header
+header-right-tip =
+    .tooltiptext = Right header
+footer-left-tip =
+    .tooltiptext = Left footer
+footer-center-tip =
+    .tooltiptext = Centre footer
+footer-right-tip =
+    .tooltiptext = Right footer
+hf-blank =
+    .label = --blank--
+hf-title =
+    .label = Title
+hf-url =
+    .label = URL
+hf-date-and-time =
+    .label = Date/Time
+hf-page =
+    .label = Page #
+hf-page-and-total =
+    .label = Page # of #
+hf-custom =
+    .label = Custom…
+print-preview-window =
+    .title = Print Preview
+print-title =
+    .value = Title:
+print-preparing =
+    .value = Preparing…
+print-progress =
+    .value = Progress:
+print-window =
+    .title = Printing
+print-complete =
+    .value = Printing is Completed.
+
+# Variables
+# $percent (integer) - Number of printed percentage
+print-percent =
+    .value = { $percent }%
+dialog-cancel-label = Cancel
+dialog-close-label = Close
diff --git a/l10n-en-GB/toolkit/toolkit/printing/printPreview.ftl b/l10n-en-GB/toolkit/toolkit/printing/printPreview.ftl
new file mode 100644
index 0000000000..bd56b0e3fc
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/printing/printPreview.ftl
@@ -0,0 +1,73 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+printpreview-simplify-page-checkbox =
+    .label = Simplify Page
+    .accesskey = i
+    .tooltiptext = This page cannot be automatically simplified
+printpreview-simplify-page-checkbox-enabled =
+    .label = { printpreview-simplify-page-checkbox.label }
+    .accesskey = { printpreview-simplify-page-checkbox.accesskey }
+    .tooltiptext = Change layout for easier reading
+printpreview-close =
+    .label = Close
+    .accesskey = C
+printpreview-portrait =
+    .label = Portrait
+    .accesskey = o
+printpreview-landscape =
+    .label = Landscape
+    .accesskey = L
+printpreview-scale =
+    .value = Scale:
+    .accesskey = S
+printpreview-shrink-to-fit =
+    .label = Shrink To Fit
+printpreview-custom =
+    .label = Custom…
+printpreview-print =
+    .label = Print…
+    .accesskey = P
+printpreview-of =
+    .value = of
+printpreview-custom-scale-prompt-title = Custom Scale
+printpreview-page-setup =
+    .label = Page Setup…
+    .accesskey = u
+printpreview-page =
+    .value = Page:
+    .accesskey = a
+
+# Variables
+# $sheetNum (integer) - The current sheet number
+# $sheetCount (integer) - The total number of sheets to print
+printpreview-sheet-of-sheets = { $sheetNum } of { $sheetCount }
+
+## Variables
+## $percent (integer) - menuitem percent label
+## $arrow (String) - UTF-8 arrow character for navigation buttons
+
+printpreview-percentage-value =
+    .label = { $percent }%
+printpreview-homearrow =
+    .label = { $arrow }
+    .tooltiptext = First page
+printpreview-previousarrow =
+    .label = { $arrow }
+    .tooltiptext = Previous page
+printpreview-nextarrow =
+    .label = { $arrow }
+    .tooltiptext = Next page
+printpreview-endarrow =
+    .label = { $arrow }
+    .tooltiptext = Last page
+
+printpreview-homearrow-button =
+    .title = First page
+printpreview-previousarrow-button =
+    .title = Previous page
+printpreview-nextarrow-button =
+    .title = Next page
+printpreview-endarrow-button =
+    .title = Last page
diff --git a/l10n-en-GB/toolkit/toolkit/printing/printUI.ftl b/l10n-en-GB/toolkit/toolkit/printing/printUI.ftl
new file mode 100644
index 0000000000..3cf8061aac
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/printing/printUI.ftl
@@ -0,0 +1,148 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+printui-title = Print
+# Dialog title to prompt the user for a filename to save print to PDF.
+printui-save-to-pdf-title = Save As
+
+# Variables
+# $sheetCount (integer) - Number of paper sheets
+printui-sheets-count =
+    { $sheetCount ->
+        [one] { $sheetCount } sheet of paper
+       *[other] { $sheetCount } sheets of paper
+    }
+
+printui-page-range-all = All
+printui-page-range-current = Current
+printui-page-range-odd = Odd
+printui-page-range-even = Even
+printui-page-range-custom = Custom
+printui-page-range-label = Pages
+printui-page-range-picker =
+    .aria-label = Pick page range
+printui-page-custom-range-input =
+    .aria-label = Enter custom page range
+    .placeholder = e.g. 2-6, 9, 12-16
+
+# Section title for the number of copies to print
+printui-copies-label = Copies
+
+printui-orientation = Orientation
+printui-landscape = Landscape
+printui-portrait = Portrait
+
+# Section title for the printer or destination device to target
+printui-destination-label = Destination
+printui-destination-pdf-label = Save to PDF
+
+printui-more-settings = More settings
+printui-less-settings = Fewer settings
+
+printui-paper-size-label = Paper size
+
+# Section title (noun) for the print scaling options
+printui-scale = Scale
+printui-scale-fit-to-page-width = Fit to page width
+# Label for input control where user can set the scale percentage
+printui-scale-pcent = Scale
+
+# Section title (noun) for the two-sided print options
+printui-two-sided-printing = Two-sided printing
+printui-two-sided-printing-off = Off
+# Flip the sheet as if it were bound along its long edge.
+printui-two-sided-printing-long-edge = Flip on long edge
+# Flip the sheet as if it were bound along its short edge.
+printui-two-sided-printing-short-edge = Flip on short edge
+
+# Section title for miscellaneous print options
+printui-options = Options
+printui-headers-footers-checkbox = Print headers and footers
+printui-backgrounds-checkbox = Print backgrounds
+
+## The "Format" section, select a version of the website to print. Radio
+## options to select between the original page, selected text only, or a version
+## where the page is processed with "Reader View".
+
+# The section title.
+printui-source-label = Format
+# Option for printing the original page.
+printui-source-radio = Original
+# Option for printing just the content a user selected prior to printing.
+printui-selection-radio = Selection
+# Option for "simplifying" the page by printing the Reader View version.
+printui-simplify-page-radio = Simplified
+
+##
+
+printui-color-mode-label = Colour mode
+printui-color-mode-color = Colour
+printui-color-mode-bw = Black and white
+
+printui-margins = Margins
+printui-margins-default = Default
+printui-margins-min = Minimum
+printui-margins-none = None
+printui-margins-custom-inches = Custom (inches)
+printui-margins-custom-mm = Custom (mm)
+printui-margins-custom-top = Top
+printui-margins-custom-top-inches = Top (inches)
+printui-margins-custom-top-mm = Top (mm)
+printui-margins-custom-bottom = Bottom
+printui-margins-custom-bottom-inches = Bottom (inches)
+printui-margins-custom-bottom-mm = Bottom (mm)
+printui-margins-custom-left = Left
+printui-margins-custom-left-inches = Left (inches)
+printui-margins-custom-left-mm = Left (mm)
+printui-margins-custom-right = Right
+printui-margins-custom-right-inches = Right (inches)
+printui-margins-custom-right-mm = Right (mm)
+
+printui-system-dialog-link = Print using the system dialogue…
+
+printui-primary-button = Print
+printui-primary-button-save = Save
+printui-cancel-button = Cancel
+printui-close-button = Close
+
+printui-loading = Preparing Preview
+
+# Reported by screen readers and other accessibility tools to indicate that
+# the print preview has focus.
+printui-preview-label =
+    .aria-label = Print Preview
+
+printui-pages-per-sheet = Pages per sheet
+
+# This is shown next to the Print button with an indefinite loading spinner
+# when the user prints a page and it is being sent to the printer.
+printui-print-progress-indicator = Printing…
+printui-print-progress-indicator-saving = Saving…
+
+## Paper sizes that may be supported by the Save to PDF destination:
+
+printui-paper-a5 = A5
+printui-paper-a4 = A4
+printui-paper-a3 = A3
+printui-paper-a2 = A2
+printui-paper-a1 = A1
+printui-paper-a0 = A0
+printui-paper-b5 = B5
+printui-paper-b4 = B4
+printui-paper-jis-b5 = JIS-B5
+printui-paper-jis-b4 = JIS-B4
+printui-paper-letter = US Letter
+printui-paper-legal = US Legal
+printui-paper-tabloid = Tabloid
+
+## Error messages shown when a user has an invalid input
+
+printui-error-invalid-scale = Scale must be a number between 10 and 200.
+printui-error-invalid-margin = Please enter a valid margin for the selected paper size.
+printui-error-invalid-copies = Copies must be a number between 1 and 10000.
+
+# Variables
+# $numPages (integer) - Number of pages
+printui-error-invalid-range = Range must be a number between 1 and { $numPages }.
+printui-error-invalid-start-overflow = The “from” page number must be smaller than the “to” page number.
diff --git a/l10n-en-GB/toolkit/toolkit/reportBrokenSite/reportBrokenSite.ftl b/l10n-en-GB/toolkit/toolkit/reportBrokenSite/reportBrokenSite.ftl
new file mode 100644
index 0000000000..6fbe8159b2
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/reportBrokenSite/reportBrokenSite.ftl
@@ -0,0 +1,3 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
diff --git a/l10n-en-GB/toolkit/toolkit/updates/backgroundupdate.ftl b/l10n-en-GB/toolkit/toolkit/updates/backgroundupdate.ftl
new file mode 100644
index 0000000000..4a4335656c
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/updates/backgroundupdate.ftl
@@ -0,0 +1,5 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+backgroundupdate-task-description = The Background Update task checks for updates to { -brand-short-name } when { -brand-short-name } is not running. This task is installed automatically by { -brand-short-name }, and is reinstalled when { -brand-short-name } runs. To disable this task, update the browser settings or the { -brand-short-name } enterprise policy setting “BackgroundAppUpdate”.
diff --git a/l10n-en-GB/toolkit/toolkit/updates/elevation.ftl b/l10n-en-GB/toolkit/toolkit/updates/elevation.ftl
new file mode 100644
index 0000000000..b7cfc730c8
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/updates/elevation.ftl
@@ -0,0 +1,22 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+# This is temporary until bug 1521632 is fixed
+
+elevation-update-wizard =
+    .title = Software Update
+elevation-details-link-label =
+    .value = Details
+elevation-error-manual =
+    You can update { -brand-short-name } manually by visiting this link
+    and downloading the latest version:
+elevation-finished-page = Update Ready to Install
+elevation-finished-background-page =
+    A security and stability update for { -brand-short-name } has been
+    downloaded and is ready to be installed.
+elevation-finished-background = Update:
+elevation-more-elevated =
+    This update requires administrator privileges. The update will be
+    installed the next time { -brand-short-name } starts. You can restart
+    { -brand-short-name } now, continue working and restart later, or decline this
+    update.
diff --git a/l10n-en-GB/toolkit/toolkit/updates/history.ftl b/l10n-en-GB/toolkit/toolkit/updates/history.ftl
new file mode 100644
index 0000000000..fa0017e6b8
--- /dev/null
+++ b/l10n-en-GB/toolkit/toolkit/updates/history.ftl
@@ -0,0 +1,29 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+history-title = Update History
+history-intro = The following updates have been installed
+
+close-button-label =
+    .buttonlabelcancel = Close
+    .title = Update History
+
+no-updates-label = No updates installed yet
+name-header = Update Name
+date-header = Install Date
+type-header = Type
+state-header = State
+
+# Used to display update history
+#
+# Variables:
+#   $name (String): name of the update
+#   $buildID (String): build identifier from the local updates.xml
+update-full-build-name = { $name } ({ $buildID })
+
+update-details = Details
+
+update-installed-on = Installed on: { $date }
+
+update-status = Status: { $status }