Adding upstream version 86.0.1.upstream/86.0.1upstream

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

52 files changed, 8653 insertions, 0 deletions

diff --git a/l10n-ja/devtools/client/aboutdebugging.ftl b/l10n-ja/devtools/client/aboutdebugging.ftl
new file mode 100644
index 0000000000..369e04b09b
--- /dev/null
+++ b/l10n-ja/devtools/client/aboutdebugging.ftl
@@ -0,0 +1,392 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. 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 = デバッガー - セットアップ
+
+# 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 = デバッガー - ランタイム / { $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 = この { -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 = セットアップ
+
+# Text displayed in the about:debugging sidebar when USB devices discovery is enabled.
+about-debugging-sidebar-usb-enabled = USB 有効
+
+# 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 無効
+
+# Connection status (connected) for runtime items in the sidebar
+aboutdebugging-sidebar-runtime-connection-status-connected = 接続済み
+# Connection status (disconnected) for runtime items in the sidebar
+aboutdebugging-sidebar-runtime-connection-status-disconnected = 未接続
+
+# Text displayed in the about:debugging sidebar when no device was found.
+about-debugging-sidebar-no-devices = デバイスが見つかりません
+
+# 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 = 接続
+
+# Text displayed in buttons found in sidebar items when the runtime is connecting.
+about-debugging-sidebar-item-connect-button-connecting = 接続中...
+
+# Text displayed in buttons found in sidebar items when the connection failed.
+about-debugging-sidebar-item-connect-button-connection-failed = 接続失敗
+
+# 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 = 接続は保留中です。ターゲットとなるブラウザーのメッセージを確認してください
+
+# Text displayed as connection error in sidebar item when the connection has timed out.
+about-debugging-sidebar-item-connect-button-connection-timeout = 接続タイムアウト
+
+# Temporary text displayed in sidebar items representing remote runtimes after
+# successfully connecting to them. Temporary UI, do not localize.
+about-debugging-sidebar-item-connected-label = 接続済み
+
+# 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 = ブラウザーを待機しています...
+
+# Text displayed in sidebar items for remote devices that have been disconnected from the
+# computer.
+about-debugging-sidebar-runtime-item-unplugged = 未接続
+
+# 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://developer.mozilla.org/docs/Tools/about:debugging)
+about-debugging-sidebar-support = デバッグに関するサポート情報
+
+# 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 = ヘルプアイコン
+
+# 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 = デバイスを再検索
+
+# Setup Page strings
+
+# Title of the Setup page.
+about-debugging-setup-title = セットアップ
+
+# Introduction text in the Setup page to explain how to configure remote debugging.
+about-debugging-setup-intro = リモートデバッグを行うデバイスの接続方式を設定します。
+
+# Explanatory text in the Setup page about what the 'This Firefox' page is for
+about-debugging-setup-this-firefox2 = このバージョンの { -brand-shorter-name } で拡張機能と Service Worker をデバッグするには、<a>{ about-debugging-this-firefox-runtime-name }</a> を使用します。
+
+# Title of the heading Connect section of the Setup page.
+about-debugging-setup-connect-heading = デバイスを接続
+
+# 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 = 有効にすると Android USB デバッグに必要なコンポーネントをダウンロードして、{ -brand-shorter-name } に追加します。
+
+# 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 = USB デバイスを有効化
+
+# Text of the button displayed in the USB section of the setup page when USB debugging is enabled.
+about-debugging-setup-usb-disable-button = USB デバイスを無効化
+
+# 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 = 更新中...
+
+# USB section of the Setup page (USB status)
+about-debugging-setup-usb-status-enabled = 有効
+about-debugging-setup-usb-status-disabled = 無効
+about-debugging-setup-usb-status-updating = 更新中...
+
+# USB section step by step guide
+about-debugging-setup-usb-step-enable-dev-menu2 = Android 端末の開発者向けオプションを有効にします。
+
+# USB section step by step guide
+about-debugging-setup-usb-step-enable-debug2 = Android 端末の開発者向けオプションで USB デバッグを有効にします。
+
+# USB section step by step guide
+about-debugging-setup-usb-step-enable-debug-firefox2 = Android 端末上の Firefox で USB デバッグを有効にします。
+
+# USB section step by step guide
+about-debugging-setup-usb-step-plug-device = Android 端末をコンピューターに接続します。
+
+# Text shown in the USB section of the setup page with a link to troubleshoot connection errors.
+# The link goes to https://developer.mozilla.org/docs/Tools/Remote_Debugging/Debugging_over_USB
+about-debugging-setup-usb-troubleshoot = USB デバイスの接続に問題がありますか？ <a>トラブルシューティング</a>
+
+# Network section of the Setup page
+about-debugging-setup-network =
+  .title = ネットワーク上の場所
+
+# Text shown in the Network section of the setup page with a link to troubleshoot connection errors.
+# The link goes to https://developer.mozilla.org/en-US/docs/Tools/Remote_Debugging/Debugging_over_a_network
+about-debugging-setup-network-troubleshoot = ネットワーク上の場所の接続に問題がありますか？ <a>トラブルシューティング</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 = 追加
+
+# Text to display when there are no locations to show.
+about-debugging-network-locations-empty-text = ネットワーク上の場所はまだ追加されていません。
+
+# 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 = ホスト
+
+# 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 = 削除
+
+# 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 = “{ $host-value }” は不正なホスト名です。正しいフォーマットは “hostname:portnumber” です。
+
+# 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 = ホスト “{ $host-value }” は登録済みです。
+
+# 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 = 一時的な拡張機能
+# Title of the extensions category.
+about-debugging-runtime-extensions =
+  .name = 拡張機能
+# Title of the tabs category.
+about-debugging-runtime-tabs =
+  .name = タブ
+# Title of the service workers category.
+about-debugging-runtime-service-workers =
+  .name = Service Worker
+# Title of the shared workers category.
+about-debugging-runtime-shared-workers =
+  .name = Shared Worker
+# Title of the other workers category.
+about-debugging-runtime-other-workers =
+  .name = 他の Worker
+# Title of the processes category.
+about-debugging-runtime-processes =
+  .name = プロセス
+
+# Label of the button opening the performance profiler panel in runtime pages for remote
+# runtimes.
+about-debugging-runtime-profile-button2 = パフォーマンスのプロファイル
+
+# 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 MDN.
+# https://developer.mozilla.org/en-US/docs/Tools/about%3Adebugging#Service_workers_not_compatible
+about-debugging-runtime-service-workers-not-compatible = このブラウザーの設定は Service Worker と互換性がありません。<a>詳細</a>
+
+# This string is displayed in the runtime page if the remote browser version is too old.
+# "Troubleshooting" link points to https://developer.mozilla.org/docs/Tools/about:debugging#Troubleshooting
+# { $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 = 接続したブラウザーのバージョン ({ $runtimeVersion }) が古いです。サポートされている最低バージョンは ({ $minVersion }) です。この組み合わせはサポートされてないため、開発ツールでエラーが発生する可能性があります。接続ブラウザーを更新してください。<a>トラブルシューティング</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 = このバージョンの Firefox は Android 版 Firefox (68) をデバッグできません。携帯電話でのテストには Android 版 Firefox Nightly のインストールをお勧めします。<a>詳細</a>
+
+# This string is displayed in the runtime page if the remote browser version is too recent.
+# "Troubleshooting" link points to https://developer.mozilla.org/docs/Tools/about:debugging#Troubleshooting
+# { $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 = 接続したブラウザー ({ $runtimeVersion }, ビルド ID { $runtimeID }) が、実行中の { -brand-shorter-name } ({ $localVersion }, ビルド ID { $localID }) よりも新しいです。この組み合わせはサポートされてないため、開発ツールでエラーが発生する可能性があります。Firefox を更新してください。<a>トラブルシューティング</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 = 切断
+
+# 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 = 接続の確認を有効にする
+
+# 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 = 接続の確認を無効にする
+
+# Title of a modal dialog displayed on remote runtime pages after clicking on the Profile Runtime button.
+about-debugging-profiler-dialog-title2 = プロファイラー
+
+# 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 = 折りたたむ / 展開
+
+# 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 = まだありません。
+
+# 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 = 調査
+
+# 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 = 一時的なアドオンを読み込む...
+
+# Text displayed when trying to install a temporary extension in the "This Firefox" page.
+about-debugging-tmp-extension-install-error = 一時的なアドオンのインストール中にエラーがありました。
+
+# 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 = 再読み込み
+
+# 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 = 削除
+
+# 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 = manifest.json ファイルか .xpi/.zip ファイルを選択してください
+
+# This string is displayed as a message about the add-on having a temporaryID.
+about-debugging-tmp-extension-temporary-id = この WebExtension は一時的な ID です。<a>詳細</a>
+
+# Text displayed for extensions in "runtime" pages, before displaying a link the extension's
+# manifest URL.
+about-debugging-extension-manifest-url =
+  .label = マニフェスト 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 = 内部 UUID
+
+# Text displayed for extensions (temporary extensions only) in "runtime" pages, before
+# displaying the location of the temporary extension.
+about-debugging-extension-location =
+  .label = 場所
+
+# 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 = 拡張機能 ID
+
+# 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 = プッシュ通知
+  .disabledTitle = Service Worker プッシュ通知は、現在のマルチプロセス { -brand-shorter-name } では無効化されています。
+
+# This string is displayed as a label of the button that starts a service worker.
+about-debugging-worker-action-start2 = 開始
+  .disabledTitle = Service Worker の開始は、現在のマルチプロセス { -brand-shorter-name } では無効化されています。
+
+# This string is displayed as a label of the button that unregisters a service worker.
+about-debugging-worker-action-unregister = 解除
+
+# Displayed for service workers in runtime pages that listen to Fetch events.
+about-debugging-worker-fetch-listening =
+  .label = Fetch
+  .value = Fetch イベントを監視中
+
+# Displayed for service workers in runtime pages that do not listen to Fetch events.
+about-debugging-worker-fetch-not-listening =
+  .label = Fetch
+  .value = Fetch イベントの監視を休止中
+
+# Displayed for service workers in runtime pages that are currently running (service
+# worker instance is active).
+about-debugging-worker-status-running = 実行中
+
+# Displayed for service workers in runtime pages that are registered but stopped.
+about-debugging-worker-status-stopped = 停止
+
+# Displayed for service workers in runtime pages that are registering.
+about-debugging-worker-status-registering = 登録中
+
+# Displayed for service workers in runtime pages, to label the scope of a worker
+about-debugging-worker-scope =
+  .label = スコープ
+
+# Displayed for service workers in runtime pages, to label the push service endpoint (url)
+# of a worker
+about-debugging-worker-push-service =
+  .label = Push サービス
+
+# Displayed as title of the inspect button when service worker debugging is disabled.
+about-debugging-worker-inspect-action-disabled =
+  .title = Service Worker の調査は、現在のマルチプロセス { -brand-shorter-name } では無効化されています。
+
+# 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 = タブの読み込みが完了してないため調査できません。
+
+# Displayed as name for the Main Process debug target in the Processes category. Only for
+# remote runtimes, if `devtools.aboutdebugging.process-debugging` is true.
+about-debugging-main-process-name = メインプロセス
+
+# Displayed as description for the Main Process debug target in the Processes category.
+# Only for remote browsers, if `devtools.aboutdebugging.process-debugging` is true.
+about-debugging-main-process-description2 = ターゲットブラウザーのメインプロセス
+
+# Displayed instead of the Main Process debug target when the preference
+# `devtools.browsertoolbox.fission` is true.
+about-debugging-multiprocess-toolbox-name = マルチプロセスツールボックス
+
+# Description for the Multiprocess Toolbox target.
+about-debugging-multiprocess-toolbox-description = ターゲットブラウザーのメインプロセスとコンテンツプロセス
+
+# Alt text used for the close icon of message component (warnings, errors and notifications).
+about-debugging-message-close-icon =
+  .alt = メッセージを閉じる
+
+# Label text used for the error details of message component.
+about-debugging-message-details-label-error = エラーの詳細
+
+# Label text used for the warning details of message component.
+about-debugging-message-details-label-warning = 警告の詳細
+
+# Label text used for default state of details of message component.
+about-debugging-message-details-label = 詳細
diff --git a/l10n-ja/devtools/client/accessibility.ftl b/l10n-ja/devtools/client/accessibility.ftl
new file mode 100644
index 0000000000..50c93dd785
--- /dev/null
+++ b/l10n-ja/devtools/client/accessibility.ftl
@@ -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/.
+
+### These strings are used inside the Accessibility panel.
+
+accessibility-learn-more = 詳細
+
+accessibility-text-label-header = テキストラベルと名前
+
+accessibility-keyboard-header = キーボード
+
+## Text entries that are used as text alternative for icons that depict accessibility isses.
+
+accessibility-warning =
+  .alt = 警告
+
+accessibility-fail =
+  .alt = エラー
+
+accessibility-best-practices =
+  .alt = 最善策
+
+## 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 = <code>alt</code> 属性を使って <span>href</span> 属性を持つ <div>area</div> 要素にラベルをつけてください。<a>詳細</a>
+
+accessibility-text-label-issue-dialog = ダイアログにはラベルをつけるべきです。<a>詳細</a>
+
+accessibility-text-label-issue-document-title = ドキュメントには <code>title</code> が必要です。<a>詳細</a>
+
+accessibility-text-label-issue-embed = 埋め込みコンテンツにはラベルをつける必要があります。<a>詳細</a>
+
+accessibility-text-label-issue-figure = キャプションのついた figure にはラベルをつけるべきです。<a>詳細</a>
+
+accessibility-text-label-issue-fieldset = <code>fieldset</code> 要素にはラベルをつける必要があります。<a>詳細</a>
+
+accessibility-text-label-issue-fieldset-legend2 = <code>legend</code> 要素を使って <span>fieldset</span> にラベルをつけてください。<a>詳細</a>
+
+accessibility-text-label-issue-form = フォームの各要素にはラベルをつける必要があります。<a>詳細</a>
+
+accessibility-text-label-issue-form-visible = フォームの各要素には目視可能なテキストのラベルをつけるべきです。<a>詳細</a>
+
+accessibility-text-label-issue-frame = <code>frame</code> 要素にはラベルをつける必要があります。<a>詳細</a>
+
+accessibility-text-label-issue-glyph = <code>alt</code> 属性を使って <span>mglyph</span> 要素にラベルをつけてください。<a>詳細</a>
+
+accessibility-text-label-issue-heading = 見出しにはラベルをつける必要があります。<a>詳細</a>
+
+accessibility-text-label-issue-heading-content = 見出しには目視可能なテキストの内容があるべきです。<a>詳細</a>
+
+accessibility-text-label-issue-iframe = <code>title</code> 属性を使って <span>iframe</span> の内容を記述してください。<a>詳細</a>
+
+accessibility-text-label-issue-image = 画像を含むコンテンツにはラベルをつける必要があります。<a>詳細</a>
+
+accessibility-text-label-issue-interactive = インタラクティブな要素にはラベルをつける必要があります。<a>詳細</a>
+
+accessibility-text-label-issue-optgroup-label2 = <code>label</code> 属性を使って <span>optgroup</span> にラベルをつけてください。<a>詳細</a>
+
+accessibility-text-label-issue-toolbar = 複数のツールバーがある場合は、ラベルをつける必要があります。<a>詳細</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 = フォーカス可能な要素は、対話的なセマンティクスを持つべきです。<a>詳細</a>
+
+accessibility-keyboard-issue-tabindex = <code>tabindex</code> 属性に 0 より大きい値を指定することは避けてください。<a>詳細</a>
+
+accessibility-keyboard-issue-action = インタラクティブな要素はキーボード操作でアクティブにできるようにする必要があります。<a>詳細</a>
+
+accessibility-keyboard-issue-focusable = インタラクティブな要素はフォーカス可能にする必要があります。<a>詳細</a>
+
+accessibility-keyboard-issue-focus-visible = フォーカス可能な要素にフォーカス時のスタイル付けが足りない可能性があります。<a>詳細</a>
+
+accessibility-keyboard-issue-mouse-only = クリック可能な要素は、フォーカス可能かつ対話的なセマンティクスを持つべきです。<a>詳細</a>
diff --git a/l10n-ja/devtools/client/accessibility.properties b/l10n-ja/devtools/client/accessibility.properties
new file mode 100644
index 0000000000..2f460d364d
--- /dev/null
+++ b/l10n-ja/devtools/client/accessibility.properties
@@ -0,0 +1,312 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. 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 (accessibility.role): A title text used for Accessibility
+# tree header column that represents accessible element role.
+accessibility.role			=役割
+
+# LOCALIZATION NOTE (accessibility.name): A title text used for Accessibility
+# tree header column that represents accessible element name.
+accessibility.name			=名前
+
+# LOCALIZATION NOTE (accessibility.logo): A title text used for Accessibility
+# logo used on the accessibility panel landing page.
+accessibility.logo			=アクセシビリティロゴ
+
+# LOCALIZATION NOTE (accessibility.properties): A title text used for header
+# for Accessibility details sidebar.
+accessibility.properties		=プロパティ
+
+# LOCALIZATION NOTE (accessibility.treeName): A title text used for
+# Accessibility tree (that represents accessible element name) container.
+accessibility.treeName			=アクセシビリティツリー
+
+# LOCALIZATION NOTE (accessibility.accessible.notAvailable): A title text
+# displayed when accessible sidebar panel does not have an accessible object to
+# display.
+accessibility.accessible.notAvailable	=アクセシビリティ情報が利用できません
+
+# LOCALIZATION NOTE (accessibility.enable): A title text for Enable
+# accessibility button used to enable accessibility service.
+accessibility.enable			=アクセシビリティ機能を有効にする
+
+# LOCALIZATION NOTE (accessibility.enabling): A title text for Enable
+# accessibility button used when accessibility service is being enabled.
+accessibility.enabling			=アクセシビリティ機能を有効にしています...
+
+# LOCALIZATION NOTE (accessibility.disable): A title text for Disable
+# accessibility button used to disable accessibility service.
+accessibility.disable			=アクセシビリティ機能を無効にする
+
+# LOCALIZATION NOTE (accessibility.disabling): A title text for Disable
+# accessibility button used when accessibility service is being
+# disabled.
+accessibility.disabling			=アクセシビリティ機能を無効にしています...
+
+# LOCALIZATION NOTE (accessibility.pick): A title text for Picker button
+# button used to pick accessible objects from the page.
+accessibility.pick			=ページからアクセス可能なオブジェクトを選択
+
+# 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	=アクセシビリティサービスを無効にできません。開発ツール以外で利用中です。
+
+# 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	=すべてのタブとウィンドウでアクセシビリティサービスを無効にします。
+
+# 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	=アクセシビリティサービスを有効にできません。アクセシビリティサービスのプライバシー設定で無効にされています。
+
+# 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	=すべてのタブとウィンドウでアクセシビリティサービスを有効にします。
+
+# 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			=詳細
+
+# 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	=アクセシビリティインスペクターは現在のページのアクセシビリティツリーを調査します。この機能はスクリーンリーダーと他の支援技術に利用されます。%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	=アクセシビリティ機能をオンにすると他の開発ツールパネルのパフォーマンスに影響します。利用しないときはオフにしてください。
+
+# 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	=JSON 出力
+
+# LOCALIZATION NOTE (accessibility.checks): A title text used for header for checks
+# section in Accessibility details sidebar.
+accessibility.checks			=チェック
+
+# 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		=このノードのチェック項目はありません。
+
+# LOCALIZATION NOTE (accessibility.contrast.header): A title text used for header for
+# checks related to color and contrast.
+accessibility.contrast.header		=色とコントラスト
+
+# 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		=計算できません
+
+# 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	=大きな文字
+
+# 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	=文字は 14 ポイント以上で太字、または 18 ポイント以上の大きさです。
+
+# 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	=WCAG レベル AA のアクセシブルテキストに準拠しています。%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	=WCAG レベル AAA のアクセシブルテキストに準拠しています。%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	=WCAG のアクセシブルテキストに準拠していません。%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	=透明ではない色を選択してください。
+
+# 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			=アクセシビリティチェック
+
+# 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		=なし
+
+# 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		=すべての要件
+
+# 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		=コントラスト
+
+# 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		=テキストラベル
+
+# 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		=キーボード
+
+# 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		=コントラスト
+
+# 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	=コントラストの警告
+
+# 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		=キーボード
+
+# 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		=テキストラベル
+
+# 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	=WCAG のアクセシブルテキストに準拠していません。
+
+# 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	=WCAG のキーボードアクセシビリティに準拠していません。
+
+# 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	=WCAG の代替テキストに準拠していません。
+
+# 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		=チェック項目:
+
+# LOCALIZATION NOTE (accessibility.tree.filters.prefs): A title text for the
+# preferences button tooltip that contains preferences for accessibility audit.
+accessibility.tree.filters.prefs	=設定を変更します
+
+# LOCALIZATION NOTE (accessibility.progress.initializing): A title text for the
+# accessibility panel overlay shown when accessibility audit is starting up.
+accessibility.progress.initializing	=初期化中...
+
+# 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	=#1 個のノードをチェック中
+
+# LOCALIZATION NOTE (accessibility.progress.finishing): A title text for the
+# accessibility panel overlay shown when accessibility audit is finishing up.
+accessibility.progress.finishing	=完了中...
+
+# LOCALIZATION NOTE (accessibility.beta): A title text for the features in the
+# accessibility panel that are currently in beta.
+accessibility.beta			=beta
+
+# 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	=ノードを選択すると見える位置まで自動的にスクロールします
+
+# 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	=見える位置にスクロール
+
+# LOCALIZATION NOTE (accessibility.documentation.label): This is the label for
+# the Documentation menu item.
+accessibility.documentation.label		=ドキュメント...
+
+# 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			=シミュレート:
+
+# 色覚関連用語訳語参考 http://jams.med.or.jp/dic/colorvision.html
+
+# LOCALIZATION NOTE (accessibility.simulation.deuteranomaly): This label is shown
+# in the "Simulate" menu in the accessibility panel and represent the deuteranomaly simulation option.
+accessibility.simulation.deuteranomaly		=2 型 3 色覚 (緑色弱)
+
+# LOCALIZATION NOTE (accessibility.simulation.protanomaly): This label is shown
+# in the "Simulate" menu in the accessibility panel and represent the protanomaly simulation option.
+accessibility.simulation.protanomaly		=1 型 3 色覚 (赤色弱)
+
+# 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		=1 型 2 色覚 (赤色盲)
+
+# 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		=2 型 2 色覚 (緑色盲)
+
+# 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		=3 型 2 色覚 (青色盲)
+
+# LOCALIZATION NOTE (accessibility.simulation.tritanomaly): This label is shown
+# in the "Simulate" menu in the accessibility panel and represent the tritanomaly simulation option.
+accessibility.simulation.tritanomaly		=3 型 3 色覚 (青色弱)
+
+# 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		=コントラスト消失
+
+# 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		=1 色覚 (全色盲)
+
+# 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	=タブ移動順序を表示
+
+# 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	=要素と、それらの tabindex によるタブ移動順序を表示します。
diff --git a/l10n-ja/devtools/client/animationinspector.properties b/l10n-ja/devtools/client/animationinspector.properties
new file mode 100644
index 0000000000..01b81b333c
--- /dev/null
+++ b/l10n-ja/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			=現在の要素にアニメーションが見つかりませんでした。\nこのページから別の要素を選択してください。
+
+# LOCALIZATION NOTE (player.animationDurationLabel):
+# This string is displayed in each animation player widget. It is the label
+# displayed before the animation duration.
+player.animationDurationLabel		=再生時間:
+
+# 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		=遅延:
+
+# LOCALIZATION NOTE (player.animationEndDelayLabel):
+# This string is displayed in each animation player widget. It is the label
+# displayed before the animation endDelay.
+player.animationEndDelayLabel		=遅延終了:
+
+# 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		=再生速度:
+
+# 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	=繰り返し:
+
+# 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$S will be replaced by the actual time of iteration start without time unit
+# e.g.
+# If iterationStart of animation is 0.5 and duration is 1 sec, the string will be
+# "Iteration start: 0.5 (0.5s)"
+player.animationIterationStartLabel2	=繰り返し開始: %1$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	=全体イージング:
+
+# 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	=アニメーションタイミング関数:
+
+# 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		=スタイル適用:
+
+# 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		=再生方向:
+
+# 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			=%S 秒
+
+# 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 倍速
+
+# 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	=このアニメーションは描画スレッドで実行しています
+
+# 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		=すべてのアニメーションのプロパティが最適化されています
+
+# 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	=一部のアニメーションのプロパティが最適化されています
+
+# 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		=アニメーションの続きを再生します
+
+# 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		=アニメーションを一時停止します
+
+# 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		=アニメーションを巻き戻します
+
+# 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		=%S ms
+
+# 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 アニメーション
+
+# 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 トランジション
+
+# 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 — スクリプトアニメーション
+
+# 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	=スクリプトアニメーション
+
+# 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-ja/devtools/client/application.ftl b/l10n-ja/devtools/client/application.ftl
new file mode 100644
index 0000000000..974488c727
--- /dev/null
+++ b/l10n-ja/devtools/client/application.ftl
@@ -0,0 +1,184 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. 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 Worker
+
+# 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 = <a>about:debugging</a> で他のドメインの Service Worker をデバッグ
+
+# Text for the button to unregister a Service Worker. Displayed for active Service Workers.
+serviceworker-worker-unregister = 登録解除
+
+# 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 = デバッグ
+  .title = 実行中の Service Worker のみデバッグできます
+
+# Text for the debug link displayed for an already started Service Worker, when we
+# are in multi e10s mode, which effectively disables this link.
+serviceworker-worker-debug-forbidden = デバッグ
+  .title = マルチ e10s が無効の場合は、Service Worker のみデバッグできます
+
+# 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-start2 = 開始
+  .title = マルチ e10s が無効の場合は、Service Worker のみ開始できます
+
+# Alt text for the image icon displayed inside a debug link for a service worker.
+serviceworker-worker-inspect-icon =
+  .alt = 調査
+
+# 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 = 開始
+
+# 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 = <time>{ DATETIME($date, month: "long", year: "numeric", day: "numeric", hour: "numeric", minute: "numeric", second: "numeric") }</time>更新
+
+# Text displayed next to the URL for the source of the service worker (e-g. "Source my/path/to/worker-js")
+serviceworker-worker-source = ソース
+
+# Text displayed next to the current status of the service worker.
+serviceworker-worker-status = 状態
+
+## 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 = 実行中
+
+# Service Worker status. A stopped service worker is registered but not currently active.
+serviceworker-worker-status-stopped = 停止中
+
+# Text displayed when no service workers are visible for the current page. Clicking on the
+# link will open https://developer-mozilla-org/docs/Web/API/Service_Worker_API/Using_Service_Workers
+serviceworker-empty-intro = Service Worker を調査するには、それを登録する必要があります。<a>詳細</a>
+
+# Text displayed when there are no Service Workers to display for the current page,
+# introducing hints to debug Service Worker issues.
+serviceworker-empty-suggestions = 現在のページに Service Worker が含まれている場合は、ここで試せるものがあります。
+
+# Suggestion to check for errors in the Console to investigate why a service worker is not
+# registered. Clicking on the link opens the webconsole.
+serviceworker-empty-suggestions-console = コンソールでエラーを確認します。<a>コンソールを開く</a>
+
+# Suggestion to use the debugger to investigate why a service worker is not registered.
+# Clicking on the link will switch from the Application panel to the debugger.
+serviceworker-empty-suggestions-debugger = 登録した Service Worker をステップ実行して、例外を確認します。<a>デバッガーを開く</a>
+
+# Suggestion to go to about:debugging in order to see Service Workers for all domains.
+# Clicking on the link will open about:debugging in a new tab.
+serviceworker-empty-suggestions-aboutdebugging = 他のドメインの Service Worker を調べます。<a>about:debugging を開く</a>
+
+# Text displayed when no service workers are visible for the current page.
+serviceworker-empty-intro2 = Service Worker が見つかりませんでした。
+
+# Link will open https://developer.mozilla.org/docs/Web/API/Service_Worker_API/Using_Service_Workers
+serviceworker-empty-intro-link = 詳細
+
+# 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 = 現在のページに Service Worker が含まれている場合は、<a>コンソール</a>にエラーが表示されているか、登録した Service Worker を<span>デバッガー</span>でステップスルーできます。
+
+# 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 = 他のドメインの Service Worker を確認します
+
+# Header for the Manifest page when we have an actual manifest
+manifest-view-header = アプリマニフェスト
+
+# Header for the Manifest page when there's no manifest to inspect
+# The link will open https://developer.mozilla.org/en-US/docs/Web/Manifest
+manifest-empty-intro = ウェブアプリマニフェストを追加し、ここで検査する必要があります。<a>詳細</a>
+
+# Header for the Manifest page when there's no manifest to inspect
+manifest-empty-intro2 = ウェブアプリマニフェストが検出されませんでした
+
+# The link will open https://developer.mozilla.org/en-US/docs/Web/Manifest
+manifest-empty-intro-link = マニフェストに追加する方法
+
+# Header for the Errors and Warnings section of Manifest inspection displayed in the application panel.
+manifest-item-warnings = エラーと警告
+
+# Header for the Identity section of Manifest inspection displayed in the application panel.
+manifest-item-identity = 識別子
+
+# Header for the Presentation section of Manifest inspection displayed in the application panel.
+manifest-item-presentation = 表示
+
+# Header for the Icon section of Manifest inspection displayed in the application panel.
+manifest-item-icons = アイコン
+
+# Text displayed while we are loading the manifest file
+manifest-loading = マニフェストを読み込み中...
+
+# Text displayed when the manifest has been successfully loaded
+manifest-loaded-ok = マニフェストを読み込みました。
+
+# Text displayed as a caption when there has been an error while trying to
+# load the manifest
+manifest-loaded-error = マニフェストの読み込み中にエラーが発生しました:
+
+# Text displayed as an error when there has been a Firefox DevTools error while
+# trying to load the manifest
+manifest-loaded-devtools-error = Firefox 開発ツールエラー
+
+# Text displayed when the page has no manifest available
+manifest-non-existing = マニフェストが見つからないため検査できませんでした。
+
+# 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 = マニフェストはデータ URL に埋め込まれています。
+
+# Text displayed at manifest icons to label their purpose, as declared
+# in the manifest.
+manifest-icon-purpose = 目的: <code>{$purpose}</code>
+
+# Text displayed as the alt attribute for <img> tags showing the icons in the
+# manifest.
+manifest-icon-img =
+  .alt = アイコン
+
+# Text displayed as the title attribute for <img> tags showing the icons in the
+# manifest. `$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 = アイコンのサイズ: {$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 = 未定義のサイズのアイコン
+
+# Sidebar navigation item for Manifest sidebar item section
+sidebar-item-manifest = Manifest
+  .alt = マニフェストアイコン
+  .title = マニフェスト
+
+# Sidebar navigation item for Service Workers sidebar item section
+sidebar-item-service-workers = Service Workers
+  .alt = Service Worker アイコン
+  .title = Service Worker
+
+# Text for the ALT and TITLE attributes of the warning icon
+icon-warning =
+  .alt = 警告アイコン
+  .title = 警告
+
+# Text for the ALT and TITLE attributes of the error icon
+icon-error =
+  .alt = エラーアイコン
+  .title = エラー
diff --git a/l10n-ja/devtools/client/boxmodel.properties b/l10n-ja/devtools/client/boxmodel.properties
new file mode 100644
index 0000000000..35d34bfdf7
--- /dev/null
+++ b/l10n-ja/devtools/client/boxmodel.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 : 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			=ボックスモデル
+
+# 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	=位置を編集
+
+# 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	=ボックスモデルのプロパティ
+
+# LOCALIZATION NOTE (boxmodel.propertiesHideLabel):
+# This is the spoken label for the twisty.
+# If the properties are currently showing, it will say "Hide".
+boxmodel.propertiesHideLabel	=隠します
+
+# LOCALIZATION NOTE (boxmodel.propertiesShowLabel):
+# This is the spoken label for the twisty.
+# If the properties are currently hidden, it will say "Show".
+boxmodel.propertiesShowLabel	=表示します
+
+# 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		=基準
+
+# 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	=選択した要素の配置基準となる要素です。
diff --git a/l10n-ja/devtools/client/changes.properties b/l10n-ja/devtools/client/changes.properties
new file mode 100644
index 0000000000..19412e92b5
--- /dev/null
+++ b/l10n-ja/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		=変更点はありません。
+
+# 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	=インスペクターでの CSS の変更点がここに表示されます。
+
+# 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	=インライン %S
+
+# LOCALIZATION NOTE (changes.elementStyleLabel): This label appears in the Changes
+# panel above changes done to element styles.
+changes.elementStyleLabel	=要素
+
+# 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		=コピー
+
+# 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	=すべての変更点をコピー
+
+# 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	=すべての CSS の変更点のリストをクリップボードにコピー
+
+# LOCALIZATION NOTE (changes.contextmenu.copyDeclaration): Label for "Copy Declaration"
+# option in Changes panel context menu which copies the target CSS declaration.
+changes.contextmenu.copyDeclaration		=CSS 宣言をコピー
+
+# 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			=CSS ルールをコピー
+
+# 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		=この CSS ルールの内容をコピー
+
+# LOCALIZATION NOTE (changes.contextmenu.selectAll): Label for "Select All" option in the
+# Changes panel context menu to select all text content.
+changes.contextmenu.selectAll		=すべて選択
+
+# 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-ja/devtools/client/compatibility.ftl b/l10n-ja/devtools/client/compatibility.ftl
new file mode 100644
index 0000000000..073621d6f6
--- /dev/null
+++ b/l10n-ja/devtools/client/compatibility.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/.
+
+## Messages used as headers in the main pane
+
+compatibility-selected-element-header = 選択した要素
+compatibility-all-elements-header = すべての要素
+
+## Message used as labels for the type of issue
+
+compatibility-issue-deprecated = (非推奨)
+compatibility-issue-experimental = (実験的)
+compatibility-issue-prefixneeded = (接頭辞が必要)
+compatibility-issue-deprecated-experimental = (非推奨、実験的)
+
+compatibility-issue-deprecated-prefixneeded = (非推奨、接頭辞が必要)
+compatibility-issue-experimental-prefixneeded = (実験的、接頭辞が必要)
+compatibility-issue-deprecated-experimental-prefixneeded = (非推奨、実験的、接頭辞が必要)
+
+## Messages used as labels and titles for buttons in the footer
+
+compatibility-settings-button-label = 設定
+compatibility-settings-button-title =
+    .title = 設定
+compatibility-feedback-button-label = フィードバック
+compatibility-feedback-button-title =
+    .title = フィードバック
+
+## Messages used as headers in settings pane
+
+compatibility-settings-header = 設定
+compatibility-target-browsers-header = 対象ブラウザー
+
+##
+
+# 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 } 件の非互換
+
+compatibility-no-issues-found = 互換性に問題はありません。
+compatibility-close-settings-button =
+    .title = 設定を閉じる
diff --git a/l10n-ja/devtools/client/components.properties b/l10n-ja/devtools/client/components.properties
new file mode 100644
index 0000000000..32473f91c7
--- /dev/null
+++ b/l10n-ja/devtools/client/components.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/.
+
+# 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		=(不明)
+
+# 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	=デバッガーでソースを表示 → %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	=スタイルエディターでソースを表示 → %S
+
+# LOCALIZATION NOTE (notificationBox.closeTooltip): The content of a tooltip that
+# appears when hovering over the close button in a notification box.
+notificationBox.closeTooltip	=このメッセージを閉じます
diff --git a/l10n-ja/devtools/client/debugger.properties b/l10n-ja/devtools/client/debugger.properties
new file mode 100644
index 0000000000..64a4a42aeb
--- /dev/null
+++ b/l10n-ja/devtools/client/debugger.properties
@@ -0,0 +1,1130 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. 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 (collapseSources): This is the tooltip for the button
+# that collapses the Sources and Outlines panes in the debugger UI.
+collapseSources				=ソース・アウトラインペインを折りたたみます
+
+# LOCALIZATION NOTE (collapseBreakpoints): This is the tooltip for the button
+# that collapses the Breakpoints panes in the debugger UI.
+collapseBreakpoints			=ブレークポイントペインを折りたたみます
+
+# LOCALIZATION NOTE (copyToClipboard.label): This is the text that appears in the
+# context menu to copy the text that the user selected.
+copyToClipboard.label			=クリップボードにコピー
+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			=ソースのテキストをコピー
+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				=ソース URI をコピー
+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			=すべて閉じる
+
+# 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				=すべて展開
+
+# LOCALIZATION NOTE (setDirectoryRoot.label): This is the text that appears in the
+# context menu to set a directory as root directory
+setDirectoryRoot.label			=ルートディレクトリーに設定
+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		=ルートディレクトリーを削除
+
+# LOCALIZATION NOTE (blackBoxAll.label): Text associated with the blackbox context menu item
+blackBoxAll.label			=ブラックボックス
+
+# LOCALIZATION NOTE (blackBoxAllInGroup.label): This is the text that appears in the
+# context submenu to blackbox all files inside of the selected group
+blackBoxAllInGroup.label		=このグループのファイルをブラックボックス化
+
+# LOCALIZATION NOTE (unblackBoxAllInGroup.label): This is the text that appears in the
+# context submenu to unblackbox all files inside of the selected group
+unblackBoxAllInGroup.label		=このグループのファイルのブラックボックス化を解除
+
+# LOCALIZATION NOTE (blackBoxAllOutsideGroup.label): This is the text that appears in the
+# context submenu to blackbox all files outside of the selected group
+blackBoxAllOutsideGroup.label		=このグループ以外のファイルをブラックボックス化
+
+# LOCALIZATION NOTE (unblackBoxAllOutsideGroup.label): This is the text that appears in the
+# context submenu to unblackbox all files outside of the selected group
+unblackBoxAllOutsideGroup.label		=このグループ以外のファイルのブラックボックス化を解除
+
+# LOCALIZATION NOTE (blackBoxAllInDir.label): This is the text that appears in the
+# context submenu to blackbox all files inside of the selected directory
+blackBoxAllInDir.label			=このディレクトリーのファイルをブラックボックス化
+
+# LOCALIZATION NOTE (unblackBoxAllInDir.label): This is the text that appears in the
+# context submenu to unblackbox all files inside of the selected directory
+unblackBoxAllInDir.label		=このディレクトリーのファイルのブラックボックス化を解除
+
+# LOCALIZATION NOTE (blackBoxAllOutsideDir.label): This is the text that appears in the
+# context submenu to blackbox all files outside of the selected directory
+blackBoxAllOutsideDir.label		=このディレクトリー以外のファイルをブラックボックス化
+
+# LOCALIZATION NOTE (unblackBoxAllOutsideDir.label: This is the text that appears in the
+# context submenu to unblackbox all files outside of the selected directory
+unblackBoxAllOutsideDir.label		=このディレクトリー以外のファイルのブラックボックス化を解除
+
+# LOCALIZATION NOTE (ignoreAll.label): Text associated with the ignore context menu item
+ignoreAll.label				=無視
+
+# 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			=このグループのファイルを無視
+
+# 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		=このグループのファイルを無視しない
+
+# 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		=このグループ以外のファイルを無視
+
+# 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		=このグループ以外のファイルを無視しない
+
+# 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			=このディレクトリーのファイルを無視
+
+# 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			=このディレクトリーのファイルを無視しない
+
+# 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		=このディレクトリー以外のファイルを無視
+
+# 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		=このディレクトリー以外のファイルを無視しない
+
+# LOCALIZATION NOTE (copyFunction.label): This is the text that appears in the
+# context menu to copy the function the user selected
+copyFunction.label			=関数をコピー
+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				=スタックトレースをコピー
+copyStackTrace.accesskey		=c
+
+# LOCALIZATION NOTE (restartFrame): This is the text that appears in the
+# context menu to restart a frame.
+restartFrame				=フレームを再実行
+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				=ソース・アウトラインペインを展開します
+
+# LOCALIZATION NOTE (expandBreakpoints): This is the tooltip for the button
+# that expands the Breakpoints panes in the debugger UI.
+expandBreakpoints			=ブレークポイントペインを展開します
+
+# LOCALIZATION NOTE (evaluateInConsole.label): Editor right-click menu item
+# to execute selected text in browser console.
+evaluateInConsole.label			=コンソール内で評価します
+
+# LOCALIZATION NOTE (pauseButtonTooltip): The tooltip that is displayed for the pause
+# button when the debugger is in a running state.
+pauseButtonTooltip			=停止 %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		=次を実行するまで待機します
+
+# LOCALIZATION NOTE (resumeButtonTooltip): The label that is displayed on the pause
+# button when the debugger is in a paused state.
+resumeButtonTooltip			=復帰 %S
+
+# LOCALIZATION NOTE (stepOverTooltip): The label that is displayed on the
+# button that steps over a function call.
+stepOverTooltip				=ステップオーバー %S
+
+# LOCALIZATION NOTE (stepInTooltip): The label that is displayed on the
+# button that steps into a function call.
+stepInTooltip				=ステップイン %S
+
+# LOCALIZATION NOTE (stepOutTooltip): The label that is displayed on the
+# button that steps out of a function call.
+stepOutTooltip				=ステップアウト %S
+
+# LOCALIZATION NOTE (skipPausingTooltip.label): The tooltip text for disabling all
+# breakpoints and pausing triggers
+skipPausingTooltip.label		=ブレークポイントを無効にする
+
+# LOCALIZATION NOTE (undoSkipPausingTooltip.label): The tooltip text for enabling all
+# breakpoints and pausing triggers
+undoSkipPausingTooltip.label		=ブレークポイントを有効にする
+
+# LOCALIZATION NOTE (pauseOnExceptionsItem2): The pause on exceptions checkbox description
+# when the debugger will pause on all exceptions.
+pauseOnExceptionsItem2			=例外で停止
+
+# LOCALIZATION NOTE (pauseOnCaughtExceptionsItem): The pause on exceptions checkbox description
+# when the debugger should pause on caught exceptions
+pauseOnCaughtExceptionsItem		=捕捉した例外で停止
+
+# LOCALIZATION NOTE (threadsHeader): The text to describe the threads header
+threadsHeader				=スレッド
+
+# LOCALIZATION NOTE (mainThread): The text to describe the thread of the
+# program as opposed to worker threads.
+mainThread				=メインスレッド
+
+# LOCALIZATION NOTE (noSourcesText): The text to display in the sources list
+# when there are no sources.
+noSourcesText				=このページにソースはありません。
+
+# LOCALIZATION NOTE (eventListenersHeader1): The text to display in the events
+# header.
+eventListenersHeader1			=イベントリスナーブレークポイント
+
+# 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		=%S の中の要素を右クリックして、“ブレーク条件...” を選択するとブレークポイントを追加します
+
+# LOCALIZATION NOTE (inspectorTool): The text to describe the the Inspector tool
+inspectorTool				=インスペクター
+
+# LOCALIZATION NOTE (eventListenersHeader1.placeholder): The placeholder text in
+# the event search input bar
+eventListenersHeader1.placeholder	=イベントの種類で検索
+
+# LOCALIZATION NOTE (domMutationHeader): The text to display in the
+# DOM Mutation Breakpoints header
+domMutationHeader			=DOM 変更ブレークポイント
+
+# LOCALIZATION NOTE (domMutationTypes.attribute): The text to display in the
+# DOM Mutation Breakpoints panel for an attribute change
+domMutationTypes.attribute		=属性の変更
+
+# LOCALIZATION NOTE (domMutationTypes.removal): The text to display in the
+# DOM Mutation Breakpoints panel for a DOM node removal
+domMutationTypes.removal		=ノードの削除
+
+# LOCALIZATION NOTE (domMutationTypes.subtree): The text to display in the
+# DOM Mutation Breakpoints panel for a DOM subtree change
+domMutationTypes.subtree		=サブツリーの変更
+
+# 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			=エディター
+
+# LOCALIZATION NOTE (shortcuts.header.stepping): Sections header in
+# the shortcuts modal for keyboard shortcuts related to stepping.
+shortcuts.header.stepping		=ステップ
+
+# LOCALIZATION NOTE (shortcuts.header.search): Sections header in
+# the shortcuts modal for keyboard shortcuts related to search.
+shortcuts.header.search			=検索
+
+# LOCALIZATION NOTE (projectTextSearch.placeholder): A placeholder shown
+# when searching across all of the files in a project.
+projectTextSearch.placeholder		=ファイル内を検索...
+
+# 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		=検索結果はありません
+
+# 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		=ファイル内を検索...
+
+# LOCALIZATION NOTE (sourceSearch.search.placeholder2): placeholder text in
+# the source search input bar
+sourceSearch.search.placeholder2	=ファイル内を検索...
+
+# LOCALIZATION NOTE (sourceSearch.search.again.key3): Key shortcut to highlight
+# the next occurrence of the last search triggered from a source search
+# Do not localize "Cmd+G", or change the format of the string. These are
+# key identifiers, not messages displayed to the user.
+sourceSearch.search.again.key3		=Cmd+G
+
+# LOCALIZATION NOTE (sourceSearch.search.againPrev.key3): Key shortcut to highlight
+# the previous occurrence of the last search triggered from a source search
+# Do not localize "Cmd+Shift+G", or change the format of the string. These are
+# key identifiers, not messages displayed to the user.
+sourceSearch.search.againPrev.key3	=Cmd+Shift+G
+
+# 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 件の結果
+
+# LOCALIZATION NOTE (breakpointHeadingMenuItem.*): The text for all the elements
+# that are displayed in the breakpoint headings menu item popup.
+breakpointHeadingsMenuItem.enableInSource.label		=ブレークポイントを有効にする
+breakpointHeadingsMenuItem.enableInSource.accesskey	=E
+breakpointHeadingsMenuItem.disableInSource.label	=ブレークポイントを無効にする
+breakpointHeadingsMenuItem.disableInSource.accesskey	=D
+breakpointHeadingsMenuItem.removeInSource.label		=ブレークポイントを削除する
+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		=有効化
+breakpointMenuItem.enableSelf2.accesskey	=E
+breakpointMenuItem.disableSelf2.label		=無効化
+breakpointMenuItem.disableSelf2.accesskey	=D
+breakpointMenuItem.deleteSelf2.label		=除去
+breakpointMenuItem.deleteSelf2.accesskey	=R
+breakpointMenuItem.disabledbg.label		=ここでは停止しない
+breakpointMenuItem.enabledbg.label		=ここで停止する
+breakpointMenuItem.enableOthers2.label		=他を有効化
+breakpointMenuItem.enableOthers2.accesskey	=o
+breakpointMenuItem.disableOthers2.label		=他を無効化
+breakpointMenuItem.disableOthers2.accesskey	=s
+breakpointMenuItem.deleteOthers2.label		=他を除去
+breakpointMenuItem.deleteOthers2.accesskey	=h
+breakpointMenuItem.enableAll2.label		=すべて有効化
+breakpointMenuItem.enableAll2.accesskey		=b
+breakpointMenuItem.disableAll2.label		=すべて無効化
+breakpointMenuItem.disableAll2.accesskey	=k
+breakpointMenuItem.deleteAll2.label		=すべて除去
+breakpointMenuItem.deleteAll2.accesskey		=a
+breakpointMenuItem.removeCondition2.label	=条件を削除
+breakpointMenuItem.removeCondition2.accesskey	=c
+breakpointMenuItem.addCondition2.label		=条件を追加
+breakpointMenuItem.addCondition2.accesskey	=A
+breakpointMenuItem.editCondition2.label		=条件を編集
+breakpointMenuItem.editCondition2.accesskey	=n
+breakpointMenuItem.enableSelf			=ブレークポイントを有効化
+breakpointMenuItem.disableSelf			=ブレークポイントを無効化
+breakpointMenuItem.deleteSelf			=ブレークポイントを除去
+breakpointMenuItem.enableOthers			=他のブレークポイントを有効化
+breakpointMenuItem.disableOthers		=他のブレークポイントを無効化
+breakpointMenuItem.deleteOthers			=他のブレークポイントを除去
+breakpointMenuItem.enableAll			=すべてのブレークポイントを有効化
+breakpointMenuItem.disableAll			=すべてのブレークポイントを無効化
+breakpointMenuItem.deleteAll			=すべてのブレークポイントを除去
+breakpointMenuItem.disableAllAtLine.label	=行のブレークポイントを無効化
+breakpointMenuItem.disableAllAtLine.accesskey	=K
+breakpointMenuItem.enableAllAtLine.label	=行のブレークポイントを有効化
+breakpointMenuItem.enableAllAtLine.accesskey	=L
+breakpointMenuItem.removeAllAtLine.label	=行のブレークポイントを除去
+breakpointMenuItem.removeAllAtLine.accesskey	=X
+
+# LOCALIZATION NOTE (breakpoints.header): Breakpoints right sidebar pane header.
+breakpoints.header			=ブレークポイント
+
+# LOCALIZATION NOTE (breakpoints.enable): The text that may appear as a tooltip
+# when hovering over the 'disable breakpoints' switch button in right sidebar
+breakpoints.enable			=ブレークポイントを有効にします
+
+# LOCALIZATION NOTE (breakpoints.disable): The text that may appear as a tooltip
+# when hovering over the 'disable breakpoints' switch button in right sidebar
+breakpoints.disable			=ブレークポイントを無効にします
+
+# LOCALIZATION NOTE (breakpoints.removeBreakpointTooltip): The tooltip that is displayed
+# for remove breakpoint button in right sidebar
+breakpoints.removeBreakpointTooltip	=ブレークポイントを取り除きます
+
+# LOCALIZATION NOTE (callStack.header): Call Stack right sidebar pane header.
+callStack.header			=コールスタック
+
+# LOCALIZATION NOTE (callStack.notPaused): Call Stack right sidebar pane
+# message when not paused.
+callStack.notPaused			=停止していません
+
+# LOCALIZATION NOTE (callStack.collapse): Call Stack right sidebar pane
+# message to hide some of the frames that are shown.
+callStack.collapse			=行を折りたたむ
+
+# LOCALIZATION NOTE (callStack.expand): Call Stack right sidebar pane
+# message to show more of the frames.
+callStack.expand			=行を広げる
+
+# 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		=%S フレーム表示します。
+
+# 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		=%S フレーム非表示にします
+
+# 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			=検索結果 %d / #1
+
+# LOCALIZATION NOTE (editor.noResultsFound): Editor Search bar message
+# for when no results found.
+editor.noResultsFound			=検索結果はありません
+
+# LOCALIZATION NOTE (editor.searchResults.nextResult): Editor Search bar
+# tooltip for traversing to the Next Result
+editor.searchResults.nextResult		=次の検索結果
+
+# LOCALIZATION NOTE (editor.searchResults.prevResult): Editor Search bar
+# tooltip for traversing to the Previous Result
+editor.searchResults.prevResult		=前の検索結果
+
+# LOCALIZATION NOTE (editor.continueToHere.label): Editor gutter context
+# menu item for jumping to a new paused location
+editor.continueToHere.label		=ここまで続行
+editor.continueToHere.accesskey		=H
+
+# LOCALIZATION NOTE (editor.addBreakpoint): Editor gutter context menu item
+# for adding a breakpoint on a line.
+editor.addBreakpoint			=ブレークポイントを追加
+
+# LOCALIZATION NOTE (editor.disableBreakpoint): Editor gutter context menu item
+# for disabling a breakpoint on a line.
+editor.disableBreakpoint		=ブレークポイントを無効化
+editor.disableBreakpoint.accesskey	=D
+
+# LOCALIZATION NOTE (editor.enableBreakpoint): Editor gutter context menu item
+# for enabling a breakpoint on a line.
+editor.enableBreakpoint			=ブレークポイントを有効化
+
+# LOCALIZATION NOTE (editor.removeBreakpoint): Editor gutter context menu item
+# for removing a breakpoint on a line.
+editor.removeBreakpoint			=ブレークポイントを除去
+
+# LOCALIZATION NOTE (editor.addConditionBreakpoint): Editor gutter context
+# menu item for adding a breakpoint condition on a line.
+editor.addConditionBreakpoint		=条件を追加
+editor.addConditionBreakpoint.accesskey	=c
+
+# LOCALIZATION NOTE (editor.editConditionBreakpoint): Editor gutter context menu item
+# for setting a breakpoint condition on a line.
+editor.editConditionBreakpoint		=条件を編集
+
+# LOCALIZATION NOTE (editor.addLogPoint): Editor gutter context
+# menu item for adding a log point on a line.
+editor.addLogPoint			=ログを追加
+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			=ログを編集
+editor.editLogPoint.accesskey		=E
+
+# LOCALIZATION NOTE (editor.removeLogPoint): Context menu item for removing
+# a log point on a line.
+editor.removeLogPoint.label		=ログを削除
+editor.removeLogPoint.accesskey		=V
+
+# LOCALIZATION NOTE (editor.conditionalPanel.placeholder2): Placeholder text for
+# input element inside ConditionalPanel component
+editor.conditionalPanel.placeholder2		=ブレークポイントの条件式。例: 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	=ログメッセージ。例: displayName
+
+# LOCALIZATION NOTE (editor.jumpToMappedLocation1): Context menu item
+# for navigating to a source mapped location
+editor.jumpToMappedLocation1		=%S の位置へジャンプ
+editor.jumpToMappedLocation1.accesskey	=m
+
+# LOCALIZATION NOTE (downloadFile.label): Context menu item
+# for downloading a source's content
+downloadFile.label			=ファイルをダウンロード
+downloadFile.accesskey			=d
+
+# LOCALIZATION NOTE (inlinePreview.show.label): Context menu item
+# for showing the inline preview blocks
+inlinePreview.show.label		=インラインプレビューを表示
+
+# LOCALIZATION NOTE (inlinePreview.hide.label): Context menu item
+# for hiding the inline preview block
+inlinePreview.hide.label		=インラインプレビューを隠す
+
+# LOCALIZATION NOTE (inlinePreview.toggle.label): Context menu item
+# that will toggle display of inline preview
+inlinePreview.toggle.label		=インライン変数プレビュー
+
+# LOCALIZATION NOTE (inlinePreview.toggle.tooltip): Context menu item
+# tooltip that will describe toggling inline preview
+inlinePreview.toggle.tooltip		=デバッガーエディターでインラインプレビューを表示します
+
+# LOCALIZATION NOTE (editorWrapping.show.label): Context menu item
+# for showing the wrap lines block
+editorWrapping.show.label		=行を折り返す
+
+# LOCALIZATION NOTE (editorWrapping.hide.label): Context menu item
+# for showing the wrap lines block
+editorWrapping.hide.label		=行の折り返しを戻す
+
+# LOCALIZATION NOTE (editorWrapping.toggle.label): Context menu item
+# label for toggling the lines wrapping feature
+editorWrapping.toggle.label		=行の折り返し
+
+# LOCALIZATION NOTE (editorWrapping.toggle.tooltip): Context menu item
+# tooltip for toggling the lines wrapping feature
+editorWrapping.toggle.tooltip		=デバッガーエディターで行を折り返します
+
+# LOCALIZATION NOTE (settings.button.label): Label for Settings button
+settings.button.label			=デバッガー設定
+
+# LOCALIZATION NOTE (settings.disableJavaScript.label): Context menu item
+# label for disabling JavaScript
+settings.disableJavaScript.label	=JavaScript を無効化
+
+# LOCALIZATION NOTE (settings.disableJavaScript.tooltip): Context menu item
+# tooltip for disabling JavaScript
+settings.disableJavaScript.tooltip	=JavaScript を無効化します。(再読み込みが必要です)
+
+# LOCALIZATION NOTE (settings.toggleSourceMaps.tooltip): Context menu item
+# tooltip for toggling the source maps feature
+settings.toggleSourceMaps.tooltip	=ソースマップを有効にして、生成ソースに対応する元ソースを開発ツールに読み込ませます
+
+# LOCALIZATION NOTE (settings.toggleSourceMaps.label): Context menu item
+# label for toggling the source maps feature
+settings.toggleSourceMaps.label		=ソースマップ
+
+# LOCALIZATION NOTE (preview.noProperties): Label shown in the preview
+# popup when there are no properties to show.
+preview.noProperties			=プロパティなし
+
+# LOCALIZATION NOTE (framework.disableGrouping): This is the text that appears in the
+# context menu to disable framework grouping.
+framework.disableGrouping		=フレームワークのグループ化を無効化
+framework.disableGrouping.accesskey	=u
+
+# LOCALIZATION NOTE (framework.enableGrouping): This is the text that appears in the
+# context menu to enable framework grouping.
+framework.enableGrouping		=フレームワークのグループ化を有効化
+framework.enableGrouping.accesskey	=u
+
+# LOCALIZATION NOTE (generated): Source Map term for a server source location
+generated				=生成場所
+
+# LOCALIZATION NOTE (original): Source Map term for a debugger UI source location
+original				=元の場所
+
+# LOCALIZATION NOTE (expressions.placeholder): Placeholder text for expression
+# input element
+expressions.placeholder			=監視式を追加
+
+# LOCALIZATION NOTE (expressions.errorMsg): Error text for expression
+# input element
+expressions.errorMsg			=式が不正です...
+expressions.label			=監視式を追加
+expressions.accesskey			=e
+expressions.remove.tooltip		=監視式を削除します
+
+# LOCALIZATION NOTE (xhrBreakpoints.header): The pause on any XHR breakpoints headings
+xhrBreakpoints.header			=XHR ブレークポイント
+xhrBreakpoints.placeholder		=この URL が含まれていると停止
+xhrBreakpoints.label			=XHR ブレークポイントを追加
+
+# 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		=“%S” を含む URL
+
+# LOCALIZATION NOTE (pauseOnAnyXHR): The pause on any XHR checkbox description
+# when the debugger will pause on any XHR requests.
+pauseOnAnyXHR				=いずれかの URL で停止
+
+# LOCALIZATION NOTE (watchpoints.submenu): This is the text for the watchpoints sub-menu.
+watchpoints.submenu			=ブレーク条件...
+
+# 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		=プロパティの取得
+
+# 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		=プロパティの設定
+
+# 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		=プロパティの取得または設定
+
+# LOCALIZATION NOTE (watchpoints.removeWatchpoint): This is the text that appears in the
+# context menu to delete a watchpoint on an object property.
+watchpoints.removeWatchpoint		=ウォッチポイントを削除
+
+# LOCALIZATION NOTE (watchpoints.removeWatchpointTooltip): This is the text that appears in the
+# tooltip to delete a watchpoint on an object property.
+watchpoints.removeWatchpointTooltip	=ウォッチポイントを削除します
+
+# LOCALIZATION NOTE (sourceTabs.closeTab): Editor source tab context menu item
+# for closing the selected tab below the mouse.
+sourceTabs.closeTab			=タブを閉じる
+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		=他のタブを閉じる
+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		=右側のタブを閉じる
+sourceTabs.closeTabsToEnd.accesskey	=e
+
+# LOCALIZATION NOTE (sourceTabs.closeAllTabs): Editor source tab context menu item
+# for closing all tabs.
+sourceTabs.closeAllTabs			=すべてのタブを閉じる
+sourceTabs.closeAllTabs.accesskey	=a
+
+# LOCALIZATION NOTE (sourceTabs.revealInTree): Editor source tab context menu item
+# for revealing source in tree.
+sourceTabs.revealInTree			=ツリー表示
+sourceTabs.revealInTree.accesskey	=r
+
+# LOCALIZATION NOTE (sourceTabs.prettyPrint): Editor source tab context menu item
+# for pretty printing the source.
+sourceTabs.prettyPrint			=ソースコードを整形
+sourceTabs.prettyPrint.accesskey	=p
+
+# LOCALIZATION NOTE (sourceFooter.blackbox): Tooltip text associated
+# with the blackbox button
+sourceFooter.blackbox			=ブラックボックスのソース
+
+# LOCALIZATION NOTE (sourceFooter.unblackbox): Tooltip text associated
+# with the blackbox button
+sourceFooter.unblackbox			=ブラックボックス解除ソース
+
+# LOCALIZATION NOTE (blackboxContextItem.blackbox): Text associated
+# with the blackbox context menu item
+blackboxContextItem.blackbox			=ソースをブラックボックス化
+blackboxContextItem.blackbox.accesskey		=B
+
+# LOCALIZATION NOTE (blackboxContextItem.unblackbox): Text associated
+# with the unblackbox context menu item
+blackboxContextItem.unblackbox			=ブラックボックス化を解除
+blackboxContextItem.unblackbox.accesskey	=U
+
+# LOCALIZATION NOTE (sourceFooter.ignores): Tooltip text associated
+# with the ignores button
+sourceFooter.ignore			=ソースを無視
+
+# LOCALIZATION NOTE (sourceFooter.unignore): Tooltip text associated
+# with the ignore button
+sourceFooter.unignore			=ソースを無視しない
+
+# LOCALIZATION NOTE (ignoreContextItem.ignore): Text associated
+# with the ignore context menu item
+ignoreContextItem.ignore		=ソースを無視
+ignoreContextItem.ignore.accesskey	=I
+
+# LOCALIZATION NOTE (ignoreContextItem.unignore): Text associated
+# with the unignore context menu item
+ignoreContextItem.unignore		=ソースを無視しない
+ignoreContextItem.unignore.accesskey	=U
+
+# LOCALIZATION NOTE (sourceFooter.mappedSource): Text associated
+# with a mapped source. %S is replaced by the source map origin.
+sourceFooter.mappedSource		=(%S から)
+
+# LOCALIZATION NOTE (sourceFooter.mappedSourceTooltip): Tooltip text associated
+# with a mapped source. %S is replaced by the source map origin.
+sourceFooter.mappedSourceTooltip	=(%S からマッピングしたソース)
+
+# LOCALIZATION NOTE (sourceFooter.mappedSuffix): Text associated
+# with a mapped source.  Displays next to URLs in tree and tabs.
+sourceFooter.mappedSuffix		=(マッピング)
+
+# LOCALIZATION NOTE (sourceFooter.currentCursorPosition): Text associated
+# with the current cursor line and column
+sourceFooter.currentCursorPosition		=(%1$S, %2$S)
+
+# LOCALIZATION NOTE (sourceFooter.currentCursorPosition.tooltip): Text associated
+# with the current cursor line and column
+sourceFooter.currentCursorPosition.tooltip	=(行 %1$S, 列 %2$S)
+
+# LOCALIZATION NOTE (sourceTabs.closeTabButtonTooltip): The tooltip that is displayed
+# for close tab button in source tabs.
+sourceTabs.closeTabButtonTooltip	=タブを閉じます
+
+# LOCALIZATION NOTE (scopes.header): Scopes right sidebar pane header.
+scopes.header				=スコープ
+
+# LOCALIZATION NOTE (scopes.notAvailable): Scopes right sidebar pane message
+# for when the debugger is paused, but there isn't pause data.
+scopes.notAvailable			=スコープは利用できません
+
+# LOCALIZATION NOTE (scopes.notPaused): Scopes right sidebar pane message
+# for when the debugger is not paused.
+scopes.notPaused			=停止していません
+
+# LOCALIZATION NOTE (scopes.mapping.label): Scopes right sidebar pane
+# tooltip for checkbox and label
+scopes.mapping.label			=初期変数名にマッピング
+
+# LOCALIZATION NOTE (eventlisteners.log.label): Event listeners tooltip for
+# checkbox and label
+eventlisteners.log.label		=イベントをコンソールにログ出力します
+
+# LOCALIZATION NOTE (eventlisteners.log): Checkbox label for logging events
+eventlisteners.log			=ログ
+
+# LOCALIZATION NOTE (scopes.helpTooltip.label): Scopes right sidebar pane
+# icon tooltip for link to MDN
+scopes.helpTooltip.label		=マッピングスコープの詳細
+
+# LOCALIZATION NOTE (scopes.map.label): Checkbox label to map scopes
+scopes.map.label			=マッピング
+
+# LOCALIZATION NOTE (scopes.block): Refers to a block of code in
+# the scopes pane when the debugger is paused.
+scopes.block				=ブロック
+
+# LOCALIZATION NOTE (sources.header): Sources left sidebar header
+sources.header				=ソースファイル
+
+# LOCALIZATION NOTE (outline.header): Outline left sidebar header
+outline.header				=アウトライン
+
+# LOCALIZATION NOTE (outline.placeholder): Placeholder text for the filter input
+# element
+outline.placeholder			=関数を検索
+
+# LOCALIZATION NOTE (outline.sortLabel): Label for the sort button
+outline.sortLabel			=名前で並べ替え
+
+# LOCALIZATION NOTE (outline.noFunctions): Outline text when there are no functions to display
+outline.noFunctions			=関数はありません
+
+# LOCALIZATION NOTE (outline.noFileSelected): Outline text when there are no files selected
+outline.noFileSelected			=ファイルが選択されていません
+
+# 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 で検索します
+
+# LOCALIZATION NOTE (watchExpressions.header): Watch Expressions right sidebar
+# pane header.
+watchExpressions.header			=監視式
+
+# LOCALIZATION NOTE (watchExpressions.refreshButton): Watch Expressions header
+# button for refreshing the expressions.
+watchExpressions.refreshButton		=リフレッシュ
+
+# 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 でソースファイルを検索します
+
+# 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 でファイルを探します
+
+# 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 でファイル内を検索します
+
+# 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 でファイル内を検索します
+
+# LOCALIZATION NOTE (welcome.allShortcuts): The label to open the modal of
+# shortcuts, displayed in the welcome panel.
+welcome.allShortcuts			=すべてのショートカットを表示します
+
+# LOCALIZATION NOTE (sourceSearch.search): The center pane Source Search
+# prompt for searching for files.
+sourceSearch.search			=ソースを検索...
+
+# LOCALIZATION NOTE (sourceSearch.search2): The center pane Source Search
+# prompt for searching for files.
+sourceSearch.search2			=ファイルを検索...
+
+# LOCALIZATION NOTE (pauseOnExceptions): The pause on exceptions button tooltip
+# when the debugger will pause on all exceptions.
+pauseOnExceptions			=すべての例外で停止します。クリックすると例外を無視します
+
+# 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				=読み込み中...
+
+# LOCALIZATION NOTE (wasmIsNotAvailable): The text that is displayed in the
+# script editor when the WebAssembly source is not available.
+wasmIsNotAvailable			=このモジュールをデバッグするには、再読み込みしてください
+
+# LOCALIZATION NOTE (errorLoadingText3): The text that is displayed in the debugger
+# viewer when there is an error loading a file
+errorLoadingText3			=この URI の読み込みに失敗しました: %S
+
+# LOCALIZATION NOTE(gotoLineModal.placeholder): The placeholder
+# text displayed when the user searches for specific lines in a file
+gotoLineModal.placeholder		=指定行へ移動...
+
+# LOCALIZATION NOTE(gotoLineModal.title): The message shown to users
+# to open the go to line modal
+gotoLineModal.title			=ファイル内の指定行へ移動します
+
+# 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	=関数を検索...
+symbolSearch.search.functionsPlaceholder.title	=ファイル内の関数を検索します
+
+# LOCALIZATION NOTE(symbolSearch.search.variablesPlaceholder): The placeholder
+# text displayed when the user searches for variables in a file
+symbolSearch.search.variablesPlaceholder	=変数を検索...
+symbolSearch.search.variablesPlaceholder.title	=ファイル内の変数を検索します
+
+# 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
+
+# LOCALIZATION NOTE(symbolSearch.searchModifier.modifiersLabel): A label
+# preceding the group of modifiers
+symbolSearch.searchModifier.modifiersLabel	=修飾子:
+
+# LOCALIZATION NOTE(symbolSearch.searchModifier.regex): A search option
+# when searching text in a file
+symbolSearch.searchModifier.regex		=正規表現
+
+# LOCALIZATION NOTE(symbolSearch.searchModifier.caseSensitive): A search option
+# when searching text in a file
+symbolSearch.searchModifier.caseSensitive	=大文字/小文字を区別
+
+# LOCALIZATION NOTE(symbolSearch.searchModifier.wholeWord): A search option
+# when searching text in a file
+symbolSearch.searchModifier.wholeWord		=単語単位
+
+experimental				=これは実験段階の機能です
+
+# LOCALIZATION NOTE (whyPaused.debuggerStatement): 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.debuggerStatement		=デバッガー文で停止しました
+
+# LOCALIZATION NOTE (whyPaused.breakpoint): The text that is displayed
+# in a info block explaining how the debugger is currently paused on a breakpoint
+whyPaused.breakpoint			=ブレークポイントで停止しました
+
+# LOCALIZATION NOTE (whyPaused.eventBreakpoint): The text that is displayed
+# in a info block explaining how the debugger is currently paused on an event
+# breakpoint.
+whyPaused.eventBreakpoint		=イベントブレークポイントで停止しました
+
+# LOCALIZATION NOTE (whyPaused.exception): The text that is displayed
+# in a info block explaining how the debugger is currently paused on an exception
+whyPaused.exception			=例外で停止しました
+
+# LOCALIZATION NOTE (whyPaused.mutationBreakpoint): The text that is displayed
+# in a info block explaining how the debugger is currently paused on a
+# DOM mutation breakpoint
+whyPaused.mutationBreakpoint		=DOM の変更で停止しました
+
+# LOCALIZATION NOTE (whyPaused.mutationBreakpointAdded): The text that
+# is displayed to describe an added node which triggers a subtree modification
+whyPaused.mutationBreakpointAdded	=追加:
+
+# LOCALIZATION NOTE (whyPaused.mutationBreakpointRemoved): The text that
+# is displayed to describe a removed node which triggers a subtree modification
+whyPaused.mutationBreakpointRemoved	=削除:
+
+# LOCALIZATION NOTE (whyPaused.interrupted): The text that is displayed
+# in a info block explaining how the debugger is currently paused at
+# a JS execution
+whyPaused.interrupted			=実行中に停止しました
+
+# LOCALIZATION NOTE (whyPaused.resumeLimit): 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.resumeLimit			=ステッピング中に停止しました
+
+# LOCALIZATION NOTE (whyPaused.pauseOnDOMEvents): The text that is displayed
+# in a info block explaining how the debugger is currently paused on a
+# dom event
+whyPaused.pauseOnDOMEvents		=イベントリスナーで停止しました
+
+# LOCALIZATION NOTE (whyPaused.breakpointConditionThrown): The text that is displayed
+# in an info block when evaluating a conditional breakpoint throws an error
+whyPaused.breakpointConditionThrown	=条件付きブレークポイントでエラーが発生しました
+
+# LOCALIZATION NOTE (whyPaused.XHR): The text that is displayed
+# in a info block explaining how the debugger is currently paused on an
+# xml http request
+whyPaused.XHR				=XMLHttpRequest で停止しました
+
+# LOCALIZATION NOTE (whyPaused.promiseRejection): The text that is displayed
+# in a info block explaining how the debugger is currently paused on a
+# promise rejection
+whyPaused.promiseRejection		=Promise の処理失敗で停止しました
+
+# LOCALIZATION NOTE (whyPaused.getWatchpoint): The text that is displayed
+# in a info block explaining how the debugger is currently paused at a
+# watchpoint on an object property
+whyPaused.getWatchpoint			=プロパティの取得で停止しました
+
+# LOCALIZATION NOTE (whyPaused.setWatchpoint): The text that is displayed
+# in an info block explaining how the debugger is currently paused at a
+# watchpoint on an object property
+whyPaused.setWatchpoint			=プロパティの設定で停止しました
+
+# LOCALIZATION NOTE (whyPaused.assert): The text that is displayed
+# in a info block explaining how the debugger is currently paused on an
+# assert
+whyPaused.assert			=アサーションで停止しました
+
+# LOCALIZATION NOTE (whyPaused.debugCommand): The text that is displayed
+# in a info block explaining how the debugger is currently paused on a
+# debugger statement
+whyPaused.debugCommand			=デバッグされた関数で停止しました
+
+# LOCALIZATION NOTE (whyPaused.other): The text that is displayed
+# in a info block explaining how the debugger is currently paused on an event
+# listener breakpoint set
+whyPaused.other				=デバッガーが停止しました
+
+# 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			=<匿名>
+
+# 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			=(非同期: %S)
+
+# LOCALIZATION NOTE (shortcuts.toggleBreakpoint): text describing
+# keyboard shortcut action for toggling breakpoint
+shortcuts.toggleBreakpoint		=ブレークポイント表示の切り替え
+shortcuts.toggleBreakpoint.accesskey	=B
+
+# LOCALIZATION NOTE (shortcuts.toggleCondPanel.breakpoint): text describing
+# keyboard shortcut action for toggling conditional panel for breakpoints
+shortcuts.toggleCondPanel.breakpoint	=条件付きブレークポイントを編集
+
+# LOCALIZATION NOTE (shortcuts.toggleCondPanel.logPoint): text describing
+# keyboard shortcut action for toggling conditional panel for log points
+shortcuts.toggleCondPanel.logPoint	=ログポイントを編集
+
+# LOCALIZATION NOTE (shortcuts.pauseOrResume): text describing
+# keyboard shortcut action for pause of resume
+shortcuts.pauseOrResume			=一時停止/再開
+
+# LOCALIZATION NOTE (shortcuts.stepOver): text describing
+# keyboard shortcut action for stepping over
+shortcuts.stepOver			=ステップオーバー
+
+# LOCALIZATION NOTE (shortcuts.stepIn): text describing
+# keyboard shortcut action for stepping in
+shortcuts.stepIn			=ステップイン
+
+# LOCALIZATION NOTE (shortcuts.stepOut): text describing
+# keyboard shortcut action for stepping out
+shortcuts.stepOut			=ステップアウト
+
+# LOCALIZATION NOTE (shortcuts.fileSearch): text describing
+# keyboard shortcut action for source file search
+shortcuts.fileSearch			=ソースファイル検索
+
+# LOCALIZATION NOTE (shortcuts.fileSearch2): text describing
+# keyboard shortcut action for source file search
+shortcuts.fileSearch2			=ファイルを検索
+
+# LOCALIZATION NOTE (shortcuts.gotoLine): text describing
+# keyboard shortcut for jumping to a specific line
+shortcuts.gotoLine			=指定行へ移動
+
+# LOCALIZATION NOTE (shortcuts.searchAgain): text describing
+# keyboard shortcut action for searching again
+shortcuts.searchAgain			=次を検索
+
+# LOCALIZATION NOTE (shortcuts.searchAgain2): text describing
+# keyboard shortcut action for searching again
+shortcuts.searchAgain2			=次を検索
+
+# LOCALIZATION NOTE (shortcuts.projectSearch): text describing
+# keyboard shortcut action for full project search
+shortcuts.projectSearch			=プロジェクト全体の検索
+
+# LOCALIZATION NOTE (shortcuts.projectSearch2): text describing
+# keyboard shortcut action for full project search
+shortcuts.projectSearch2		=ファイルを検索
+
+# LOCALIZATION NOTE (shortcuts.functionSearch): text describing
+# keyboard shortcut action for function search
+shortcuts.functionSearch		=関数を検索
+
+# LOCALIZATION NOTE (shortcuts.functionSearch2): text describing
+# keyboard shortcut action for function search
+shortcuts.functionSearch2		=関数を検索
+
+# LOCALIZATION NOTE (shortcuts.buttonName): text describing
+# keyboard shortcut button text
+shortcuts.buttonName			=キーボードショートカット
+
+# LOCALIZATION NOTE (variablesSeparatorLabel): The text that is displayed
+# in the variables list as a separator between the name and value.
+variablesSeparatorLabel			=:
+variablesViewOptimizedOut		=(最適化により削除)
+variablesViewUninitialized		=(未初期化)
+variablesViewMissingArgs		=(利用不可)
+
+# 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		=クリックするとインスペクターでノードを選択します
+
+# LOCALIZATION NOTE (variablesEditButtonTooltip): The text that is displayed
+# in the variables list on a getter or setter which can be edited.
+variablesEditButtonTooltip		=クリックすると値を設定します
+
+# LOCALIZATION NOTE (variablesViewErrorStacktrace): This is the text that is
+# shown before the stack trace in an error.
+variablesViewErrorStacktrace		=スタックトレース:
+
+# 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		=他 #1 個...
+
+# LOCALIZATION NOTE (variablesEditableNameTooltip): The text that is displayed
+# in the variables list on an item with an editable name.
+variablesEditableNameTooltip		=ダブルクリックすると編集します
+
+# LOCALIZATION NOTE (variablesEditableValueTooltip): The text that is displayed
+# in the variables list on an item with an editable value.
+variablesEditableValueTooltip		=クリックすると値を変更します
+
+# LOCALIZATION NOTE (variablesCloseButtonTooltip): The text that is displayed
+# in the variables list on an item which can be removed.
+variablesCloseButtonTooltip		=クリックすると削除します
+
+# 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	=解析済み
+# LOCALIZATION NOTE (serviceWorkerInfo.installing): State displayed for a
+# service worker that is being installed.
+serviceWorkerInfo.installing	=インストール中
+# LOCALIZATION NOTE (serviceWorkerInfo.installed): State displayed for a
+# service worker that has finished being installed.
+serviceWorkerInfo.installed	=インストール済み
+# LOCALIZATION NOTE (serviceWorkerInfo.activating): State displayed for a
+# service worker that is being activated.
+serviceWorkerInfo.activating	=有効化中
+# LOCALIZATION NOTE (serviceWorkerInfo.activated): State displayed for a
+# service worker that has finished being activated.
+serviceWorkerInfo.activated	=有効化済み
+# LOCALIZATION NOTE (serviceWorkerInfo.redundant): State displayed for a
+# service worker that is redundant.
+serviceWorkerInfo.redundant	=冗長
+# LOCALIZATION NOTE (serviceWorkerInfo.unknown): State displayed for a
+# service worker that is in an unknown state.
+serviceWorkerInfo.unknown	=不明
diff --git a/l10n-ja/devtools/client/device.properties b/l10n-ja/devtools/client/device.properties
new file mode 100644
index 0000000000..31550185e7
--- /dev/null
+++ b/l10n-ja/devtools/client/device.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 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		= 携帯電話
+device.tablets		= タブレット
+device.laptops		= ノート PC
+device.televisions	= テレビ
+device.consoles		= ゲーム機
+device.watches		= 時計
diff --git a/l10n-ja/devtools/client/dom.properties b/l10n-ja/devtools/client/dom.properties
new file mode 100644
index 0000000000..f93b6a7696
--- /dev/null
+++ b/l10n-ja/devtools/client/dom.properties
@@ -0,0 +1,19 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. 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 (dom.filterDOMPanel): A placeholder text used for
+# DOM panel search box.
+dom.filterDOMPanel	=DOM を絞り込み
+
+# LOCALIZATION NOTE (dom.refresh): A label for Refresh button in
+# DOM panel toolbar
+dom.refresh		=更新
diff --git a/l10n-ja/devtools/client/filterwidget.properties b/l10n-ja/devtools/client/filterwidget.properties
new file mode 100644
index 0000000000..74e78570bf
--- /dev/null
+++ b/l10n-ja/devtools/client/filterwidget.properties
@@ -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/.
+
+# 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			=フィルターが指定されていません
+
+# LOCALIZATION NOTE (emptyPresetList):
+# This string is displayed when preset's list is empty
+emptyPresetList			=保存されたプリセットはありません。\
+フィルターのプリセットを名前を付けて保存しておくと、後からすぐに再利用できます。
+
+# 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			=以下のリストを使ってフィルターを追加
+
+# 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 半径の色
+
+# 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		=上下にドラッグすると、フィルターの順序を入れ替えます
+
+# 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		=左右にドラッグすると、値を増減します
+
+# LOCALIZATION NOTE (filterListSelectPlaceholder):
+# This string is used as a preview option in the list of possible filters
+# <select>
+filterListSelectPlaceholder	=フィルターを選択
+
+# LOCALIZATION NOTE (addNewFilterButton):
+# This string is displayed on a button used to add new filters
+addNewFilterButton		=追加
+
+# LOCALIZATION NOTE (newPresetPlaceholder):
+# This string is used as a placeholder in the list of presets which is used to
+# save a new preset
+newPresetPlaceholder		=プリセット名
+
+# LOCALIZATION NOTE (savePresetButton):
+# This string is displayed on a button used to save a new preset
+savePresetButton		=保存
+
+# LOCALIZATION NOTE(presetsToggleButton):
+# This string is used in a button which toggles the presets list
+presetsToggleButton		=プリセット
diff --git a/l10n-ja/devtools/client/font-inspector.properties b/l10n-ja/devtools/client/font-inspector.properties
new file mode 100644
index 0000000000..1e33b81026
--- /dev/null
+++ b/l10n-ja/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		=システム
+
+# LOCALIZATION NOTE (fontinspector.noFontsUsedOnCurrentElement): This label is shown when
+# no fonts were used on the selected element.
+fontinspector.noFontsUsedOnCurrentElement	=現在の要素にはフォントが使用されていません。
+
+# 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			=URL をコピー
+
+# 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	=カスタム
+
+# 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		=インスタンス
+
+# 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		=サイズ
+
+# 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		=太さ
+
+# 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		=イタリック
+
+# LOCALIZATION NOTE (fontinspector.showMore): Label for a collapsed list of fonts.
+fontinspector.showMore			=さらに表示
+
+# LOCALIZATION NOTE (fontinspector.showLess): Label for an expanded list of fonts.
+fontinspector.showLess			=折りたたむ
+
+# LOCALIZATION NOTE (fontinspector.letterSpacingLabel): Label for the UI to change the
+# letter spacing in the font editor.
+fontinspector.letterSpacingLabel	=文字間隔
+
+# LOCALIZATION NOTE (fontinspector.lineHeightLabelCapitalized): Label for the UI to change the line height in the font editor.
+fontinspector.lineHeightLabelCapitalized=行の高さ
+
+# LOCALIZATION NOTE (fontinspector.allFontsOnPageHeader): Header for the section listing
+# all the fonts on the current page.
+fontinspector.allFontsOnPageHeader	=ページ内のすべてのフォント
+
+# LOCALIZATION NOTE (fontinspector.fontsUsedLabel): Label for the Font Editor section
+# which shows the fonts used on the selected element.
+fontinspector.fontsUsedLabel		=使用中のフォント
+
+# 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	=プレビューテキスト
diff --git a/l10n-ja/devtools/client/graphs.properties b/l10n-ja/devtools/client/graphs.properties
new file mode 100644
index 0000000000..85ba235928
--- /dev/null
+++ b/l10n-ja/devtools/client/graphs.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/.
+
+# LOCALIZATION NOTE These strings are used inside the Performance Tools
+# which is available from the Web Developer sub-menu -> 'Performance'.
+# 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. These strings
+# are specifically for marker names in the performance tool.
+
+# LOCALIZATION NOTE (graphs.label.average):
+# This string is displayed on graphs when showing an average.
+graphs.label.average=平均
+
+# LOCALIZATION NOTE (graphs.label.minimum):
+# This string is displayed on graphs when showing a minimum.
+graphs.label.minimum=最低
+
+# LOCALIZATION NOTE (graphs.label.maximum):
+# This string is displayed on graphs when showing a maximum.
+graphs.label.maximum=最高
diff --git a/l10n-ja/devtools/client/har.properties b/l10n-ja/devtools/client/har.properties
new file mode 100644
index 0000000000..3f7c522727
--- /dev/null
+++ b/l10n-ja/devtools/client/har.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 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 (har.responseBodyNotIncluded): A label used within
+# HAR file explaining that HTTP response bodies are not includes
+# in exported data.
+har.responseBodyNotIncluded	= 応答ボディは省略しました。
+
+# LOCALIZATION NOTE (har.requestBodyNotIncluded): A label used within
+# HAR file explaining that HTTP request bodies are not includes
+# in exported data.
+har.requestBodyNotIncluded	= 要求ボディは省略しました。
diff --git a/l10n-ja/devtools/client/inspector.properties b/l10n-ja/devtools/client/inspector.properties
new file mode 100644
index 0000000000..9b2705bfc3
--- /dev/null
+++ b/l10n-ja/devtools/client/inspector.properties
@@ -0,0 +1,557 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. 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 Web Developer 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		=マークアップビュー
+
+# 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			=いくつかのノードは隠されています。
+
+# LOCALIZATION NOTE (markupView.more.showAll2): Semi-colon list of plural forms.
+# See: http://developer.mozilla.org/en/docs/Localization_and_Plurals
+markupView.more.showAll2		=すべてのノード (#1 個) を表示
+
+# LOCALIZATION NOTE (markupView.whitespaceOnly.label)
+# Used in the badge that appears when whitespace-only text nodes are displayed in the
+# inspector.
+markupView.whitespaceOnly.label		=空白
+
+# 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		=空白のみのテキストノード: %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		=この要素はブロック要素のように振る舞い、flexbox モデルに従ってコンテンツがレイアウトされます。クリックすると、この要素の flexbox オーバーレイを切り替えられます。
+
+# 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	=この要素はインライン要素のように振る舞い、flexbox モデルに従ってコンテンツがレイアウトされます。クリックすると、この要素の flexbox オーバーレイを切り替えられます。
+
+# 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		=この要素はブロック要素のように振る舞い、grid モデルに従ってコンテンツがレイアウトされます。クリックすると、この要素の grid オーバーレイを切り替えられます。
+
+# 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	=この要素はインライン要素のように振る舞い、grid モデルに従ってコンテンツがレイアウトされます。クリックすると、この要素の grid オーバーレイを切り替えられます。
+
+# 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	=この要素は grid モデルに従ってコンテンツがレイアウトされますが、行と列の定義は親のグリッドコンテナーに従います。
+
+# 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		=この要素は、新しいブロック形式のコンテキストを確立するブロック要素のボックスを生成します。
+
+# 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	=この要素は自身のボックスを生成せず、コンテンツを描画します。
+
+# 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		=イベントリスナー
+
+# 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		=カスタム要素の定義を表示します
+
+# 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		=新しい属性
+
+# 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		=実際に表示されている要素にジャンプします
+
+#LOCALIZATION NOTE: Used in the image preview tooltip when the image could not be loaded
+previewTooltip.image.brokenImage	=画像を読み込めません
+
+# LOCALIZATION NOTE: Used in color picker tooltip when the eyedropper is disabled for
+# non-HTML documents
+eyedropper.disabled.title		=非 HTML ドキュメントでは利用できません
+
+#LOCALIZATION NOTE: Used in the event tooltip to allow the debugger to be opened
+eventsTooltip.openInDebugger		=デバッガーで開く
+
+#LOCALIZATION NOTE: Used in the event tooltip when a script's filename cannot be detected
+eventsTooltip.unknownLocation		=場所不明
+
+#LOCALIZATION NOTE: Used in the mouseover tooltip when hovering "Unknown location."
+eventsTooltip.unknownLocationExplanation	=このリスナーの元の場所が検出できませんでした。コードが Babel などのユーティリティによりトランスパイルされている可能性があります。
+
+#LOCALIZATION NOTE: Used in the tooltip for Bubbling
+eventsTooltip.Bubbling			=バブルフェーズ
+
+#LOCALIZATION NOTE: Used in the tooltip for Capturing
+eventsTooltip.Capturing			=キャプチャーフェーズ
+
+# LOCALIZATION NOTE (allTabsMenuButton.tooltip): The tooltip that gets
+# displayed when hovering over the tabs overflow button.
+allTabsMenuButton.tooltip		=すべてのタブを表示します
+
+# LOCALIZATION NOTE (inspector.showThreePaneMode): This is the tooltip for the button
+# that toggles on the 3 pane inspector mode.
+inspector.showThreePaneMode		=3 ペインインスペクターを有効にします
+
+# LOCALIZATION NOTE (inspector.hideThreePaneMode): This is the tooltip for the button
+# that toggles off the 3 pane inspector mode.
+inspector.hideThreePaneMode		=3 ペインインスペクターを無効にします
+
+# 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$S is the total number of search results. For example: "3 of 9".
+# This won't be visible until the search box is updated in Bug 835896.
+inspector.searchResultsCount2		=%2$S 件中 %1$S 件目
+
+# 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		=見つかりませんでした。
+
+# 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	=リンクを新しいタブで開く
+
+# 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	=リンクの URL をコピー
+
+# 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	=要素 #%S を選択
+
+# 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		=属性 “%S” を編集
+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		=属性 “%S” を削除
+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	=属性値 “%S” をコピー
+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	=クリックするとページ内でこのノードをハイライトします
+
+# 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
+inspectorHTMLEdit.label			=HTML として編集
+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		=innerHTML
+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		=outerHTML
+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 セレクター
+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 パス
+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		=outerHTML
+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		=innerHTML
+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		=前
+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		=後
+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	=最初の子要素として
+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	=最後の子要素として
+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	=この要素の位置にスクロール
+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		=ノードを削除
+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	=属性
+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		=属性を追加
+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	=疑似クラスを変更
+
+# LOCALIZATION NOTE (inspectorBreakpointSubmenu.label): This is the label
+# shown in the inspector contextual-menu for the sub-menu of the DOM breakpoints.
+inspectorBreakpointSubmenu.label	=ブレークポイントを設定...
+
+# 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	=サブツリーの変更
+
+# 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	=属性の変更
+
+# 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		=ノードの削除
+
+# LOCALIZATION NOTE (inspectorSearchHTML.label3): This is the label that is
+# shown as the placeholder for the markup view search in the inspector.
+inspectorSearchHTML.label3		=HTML を検索
+
+# 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		=画像のデータ URI
+
+# 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	=DOM プロパティを表示
+
+# 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	=アクセシビリティプロパティを表示
+
+# 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		=コンソールで使う
+
+# LOCALIZATION NOTE (inspectorExpandNode.label): This is the label
+# shown in the inspector contextual-menu for recursively expanding
+# mark-up elements
+inspectorExpandNode.label		=すべて展開
+
+# LOCALIZATION NOTE (inspectorCollapseAll.label): This is the label
+# shown in the inspector contextual-menu for recursively collapsing
+# mark-up elements
+inspectorCollapseAll.label		=すべて折りたたむ
+
+# 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		=ノードのスクリーンショットを撮影
+
+# 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		=ノードを複製
+
+# 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			=新しいノードを作成
+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		=コピー
+
+# 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		=貼り付け
+
+# 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	=カスタム要素を表示
+
+# 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	=フォント
+
+# 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	=変更点
+
+# 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		=ルール
+
+# 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	=計算済み
+
+# 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	=レイアウト
+
+# 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	=アニメーション
+
+# 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	=互換性
+
+# 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		=ページから色を採取
+
+# 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		=パンくずリスト
+
+# 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		=ブラウザー CSS
+
+# 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	=スタイルを絞り込み
+
+# 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		=新しいルールを追加します
+
+# 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		=疑似クラスを切り替えます
+
+# 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	=クラスを切り替えます
+
+# 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	=新しいクラスを追加
+
+# 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		=この要素にはクラスがありません
+
+# 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			=CSS プロパティはありません。
+
+# 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	=このページの print メディアのシミュレーションを切り替えます
+
+# LOCALIZATION NOTE (inspector.colorSchemeSimulation.tooltip):
+# This is the tooltip of the color scheme simulation button in the Rule View
+# toolbar that toggles color scheme simulation.
+inspector.colorSchemeSimulation.tooltip	=このページのカラースキームのシミュレーションを切り替えます
+
+# 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	=スクロール
+
+# 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	=この要素にはスクロール可能なオーバーフロー領域があります。
+
+# 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	=この要素にはスクロール可能なオーバーフロー領域があります。クリックするとオーバーフローの原因となる要素にジャンプして強調表示します。
+
+# 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		=オーバーフロー
+
+# 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	=この要素はオーバーフローの原因になっています。
+
+# 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	=該当するルールはありません
+
+# 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	=対応する背景色: %S
+
+# LOCALIZATION NOTE (colorPickerTooltip.spectrumDraggerTitle): A title text for the
+# spectrum dragger panel in the color picker tooltip.
+colorPickerTooltip.spectrumDraggerTitle		=スペクトル
+
+# LOCALIZATION NOTE (colorPickerTooltip.eyedropperTitle): A title text for the
+# eyedropper in the color picker tooltip.
+colorPickerTooltip.eyedropperTitle		=ページの色を採取
+
+# 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		=最も近い色: %S
+
+# LOCALIZATION NOTE (colorPickerTooltip.hueSliderTitle): A title text for the
+# hue slider in the color picker tooltip.
+colorPickerTooltip.hueSliderTitle		=色相
+
+# LOCALIZATION NOTE (colorPickerTooltip.alphaSliderTitle): A title text for the
+# alpha slider in the color picker tooltip.
+colorPickerTooltip.alphaSliderTitle		=不透明度
+
+# 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		=コントラスト %S:
diff --git a/l10n-ja/devtools/client/jit-optimizations.properties b/l10n-ja/devtools/client/jit-optimizations.properties
new file mode 100644
index 0000000000..493bd697f3
--- /dev/null
+++ b/l10n-ja/devtools/client/jit-optimizations.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/.
+
+# LOCALIZATION NOTE These strings are used within the JIT tools
+# in the Performance Tools which is available from the Web Developer
+# sub-menu -> 'Performance' 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 (jit.title):
+# This string is displayed in the header of the JIT Optimizations view.
+jit.title=JIT 最適化
+
+# LOCALIZATION NOTE (jit.optimizationFailure):
+# This string is displayed in a tooltip when no JIT optimizations were detected.
+jit.optimizationFailure=最適化に失敗しました
+
+# LOCALIZATION NOTE (jit.samples):
+# See: http://developer.mozilla.org/en/docs/Localization_and_Plurals
+# This string is displayed for the unit representing the number of times a
+# frame is sampled.
+# "#1" represents the number of samples
+# example: 30 samples
+jit.samples=#1 個のサンプル
+
+# LOCALIZATION NOTE (jit.types):
+# This string is displayed for the group of Ion Types in the optimizations view.
+jit.types=種類
+
+# LOCALIZATION NOTE (jit.attempts):
+# This string is displayed for the group of optimization attempts in the optimizations view.
+jit.attempts=試行
diff --git a/l10n-ja/devtools/client/jsonview.properties b/l10n-ja/devtools/client/jsonview.properties
new file mode 100644
index 0000000000..5c305802ea
--- /dev/null
+++ b/l10n-ja/devtools/client/jsonview.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 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		=生データ
+jsonViewer.tab.Headers		=ヘッダー
+
+# LOCALIZATION NOTE (jsonViewer.responseHeaders, jsonViewer.requestHeaders):
+# Label for header groups within the 'Headers' panel.
+jsonViewer.responseHeaders	=応答ヘッダー
+jsonViewer.requestHeaders	=要求ヘッダー
+
+# LOCALIZATION NOTE (jsonViewer.Save): Label for save command
+jsonViewer.Save			=保存
+
+# LOCALIZATION NOTE (jsonViewer.Copy): Label for clipboard copy command
+jsonViewer.Copy			=コピー
+
+# LOCALIZATION NOTE (jsonViewer.ExpandAll): Label for expanding all nodes
+jsonViewer.ExpandAll		=すべて展開
+jsonViewer.ExpandAllSlow	=すべて展開 (時間がかかります)
+
+# LOCALIZATION NOTE (jsonViewer.CollapseAll): Label for collapsing all nodes
+jsonViewer.CollapseAll		=すべて折りたたむ
+
+# LOCALIZATION NOTE (jsonViewer.PrettyPrint): Label for JSON
+# pretty print action button.
+jsonViewer.PrettyPrint		=整形
+
+# LOCALIZATION NOTE (jsonViewer.filterJSON): Label used in search box
+# at the top right cornder of the JSON Viewer.
+jsonViewer.filterJSON		=JSON を検索
diff --git a/l10n-ja/devtools/client/layout.properties b/l10n-ja/devtools/client/layout.properties
new file mode 100644
index 0000000000..e86e76cd40
--- /dev/null
+++ b/l10n-ja/devtools/client/layout.properties
@@ -0,0 +1,129 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. 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			=Flex コンテナーに戻る
+
+# LOCALIZATION (flexbox.flexContainer): The accordion header for the Flexbox panel
+# when a flex container is selected.
+flexbox.flexContainer			=Flex コンテナー
+
+# 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			=%S の Flex アイテム
+
+# LOCALIZATION NOTE (flexbox.noFlexboxeOnThisPage): In the case where there are no CSS
+# flex containers to display.
+flexbox.noFlexboxeOnThisPage		=続行するには Flex コンテナーまたは Flex アイテムを選択してください。
+
+# LOCALIZATION NOTE (flexbox.flexItems): Header label displayed for the flex item list.
+flexbox.flexItems				=Flex アイテム
+
+# 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				=Flex アイテムがありません
+
+# LOCALIZATION NOTE (flexbox.itemSizing.baseSizeSectionHeader): Header label displayed
+# at the start of the flex item sizing Base Size section.
+flexbox.itemSizing.baseSizeSectionHeader	=基本サイズ
+
+# LOCALIZATION NOTE (flexbox.itemSizing.flexibilitySectionHeader): Header label displayed
+# at the start of the flex item sizing Flexibility section.
+flexbox.itemSizing.flexibilitySectionHeader	=柔軟性
+
+# LOCALIZATION NOTE (flexbox.itemSizing.minSizeSectionHeader): Header label displayed
+# at the start of the flex item sizing Minimum Size section.
+flexbox.itemSizing.minSizeSectionHeader		=最小サイズ
+
+# LOCALIZATION NOTE (flexbox.itemSizing.maxSizeSectionHeader): Header label displayed at
+# the start of the flex item sizing Maximum Size section.
+flexbox.itemSizing.maxSizeSectionHeader		=最大サイズ
+
+# LOCALIZATION NOTE (flexbox.itemSizing.finalSizeSectionHeader): Header label displayed at
+# the start of the flex item sizing Final Size section.
+flexbox.itemSizing.finalSizeSectionHeader	=最終サイズ
+
+# 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		=コンテンツサイズ
+
+# 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			=このアイテムは最大サイズに固定されました。
+
+# 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			=このアイテムは最小サイズに固定されました。
+
+# 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			=アイテムは伸長される設定になっています。
+
+# 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			=アイテムは縮小される設定になっています。
+
+# 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			=アイテムは伸長される設定にはなっていません。
+
+# 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		=アイテムは縮小される設定にはなっていません。
+
+# LOCALIZATION NOTE (flexbox.togglesFlexboxHighlighter2): The tooltip text for the Flexbox
+# toggle button.
+flexbox.togglesFlexboxHighlighter2		=Flexbox のハイライトを切り替えます
+
+# LOCALIZATION NOTE (layout.cannotShowGridOutline, layout.cannotSHowGridOutline.title):
+# In the case where the grid outline cannot be effectively displayed.
+layout.cannotShowGridOutline		=このグリッドのアウトラインは表示できません
+layout.cannotShowGridOutline.title	=選択したグリッドのアウトラインはレイアウトパネル内に収まらないため利用できません。
+
+# LOCALIZATION NOTE (layout.displayAreaNames): Label of the display area names setting
+# option in the CSS Grid panel.
+layout.displayAreaNames			=領域名を表示
+
+# LOCALIZATION NOTE (layout.displayLineNumbers): Label of the display line numbers
+# setting option in the CSS Grid panel.
+layout.displayLineNumbers		=線番号を表示
+
+# LOCALIZATION NOTE (layout.extendLinesInfinitely): Label of the extend lines
+# infinitely setting option in the CSS Grid panel.
+layout.extendLinesInfinitely		=グリッド線を無限に延伸
+
+# LOCALIZATION NOTE (layout.header): The accordion header for the CSS Grid panel.
+layout.header				=グリッド
+
+# LOCALIZATION NOTE (layout.gridDisplaySettings): The header for the grid display
+# settings container in the CSS Grid panel.
+layout.gridDisplaySettings		=グリッドの表示設定
+
+# LOCALIZATION NOTE (layout.noGridsOnThisPage): In the case where there are no CSS grid
+# containers to display.
+layout.noGridsOnThisPage		=CSS グリッドはこのページで使用されていません
+
+# LOCALIZATION NOTE (layout.overlayGrid): Alternate header for the list of grid container
+# elements if only one item can be selected.
+layout.overlayGrid			=グリッドをオーバーレイ表示
diff --git a/l10n-ja/devtools/client/markers.properties b/l10n-ja/devtools/client/markers.properties
new file mode 100644
index 0000000000..cb192cf1c3
--- /dev/null
+++ b/l10n-ja/devtools/client/markers.properties
@@ -0,0 +1,140 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. 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 Performance Tools
+# which is available from the Web Developer sub-menu -> 'Performance'.
+# 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. These strings
+# are specifically for marker names in the performance tool.
+
+# LOCALIZATION NOTE (marker.label.*):
+# These strings are displayed in the Performance Tool waterfall, identifying markers.
+# We want to use the same wording as Google Chrome when appropriate.
+marker.label.styles				=CSS 再計算
+marker.label.stylesApplyChanges			=スタイルの変更適用
+marker.label.reflow				=レイアウト
+marker.label.paint				=描画
+marker.label.composite				=レイヤー合成
+marker.label.compositeForwardTransaction	=合成要求の送信
+marker.label.javascript				=関数呼び出し
+marker.label.parseHTML				=HTML パース
+marker.label.parseXML				=XML パース
+marker.label.domevent				=DOM イベント
+marker.label.consoleTime			=コンソール
+marker.label.garbageCollection2			=ガベージコレクション (GC)
+marker.label.garbageCollection.incremental	=インクリメンタル GC
+marker.label.garbageCollection.nonIncremental	=非インクリメンタル GC
+marker.label.minorGC				=マイナー GC
+marker.label.cycleCollection			=サイクルコレクション (CC)
+marker.label.cycleCollection.forgetSkippable	=CC グラフ削減
+marker.label.timestamp				=タイムスタンプ
+marker.label.worker				=Worker
+marker.label.messagePort			=MessagePort
+marker.label.unknown				=不明
+
+# LOCALIZATION NOTE (marker.label.javascript.*):
+# These strings are displayed as JavaScript markers that have special
+# reasons that can be translated.
+marker.label.javascript.scriptElement		=script タグ
+marker.label.javascript.promiseCallback		=Promise コールバック
+marker.label.javascript.promiseInit		=Promise 初期化
+marker.label.javascript.workerRunnable		=Worker
+marker.label.javascript.jsURI			=JavaScript URI
+marker.label.javascript.eventHandler		=イベントハンドラー
+
+# LOCALIZATION NOTE (marker.field.*):
+# Strings used in the waterfall sidebar as property names.
+
+# General marker fields
+marker.field.start				=開始:
+marker.field.end				=終了:
+marker.field.duration				=所要時間:
+
+# General "reason" for a marker (JavaScript, Garbage Collection)
+marker.field.causeName				=発生源:
+# General "type" for a marker (Cycle Collection, Garbage Collection)
+marker.field.type				=種別:
+# General "label" for a marker (user defined)
+marker.field.label				=ラベル:
+
+# Field names for stack values
+marker.field.stack				=スタック:
+marker.field.startStack				=スタック開始:
+marker.field.endStack				=スタック終了:
+
+# %S is the "Async Cause" of a marker, and this signifies that the cause
+# was an asynchronous one in a displayed stack.
+marker.field.asyncStack				=(非同期: %S)
+
+# For console.time markers
+marker.field.consoleTimerName			=タイマー名:
+
+# For DOM Event markers
+marker.field.DOMEventType			=イベント種別:
+marker.field.DOMEventPhase			=フェーズ:
+
+# Non-incremental cause for a Garbage Collection marker
+marker.field.nonIncrementalCause		=非インクリメンタル GC の発生源:
+
+# For "Recalculate Style" markers
+marker.field.isAnimationOnly			=アニメーションのみ:
+
+# The type of operation performed by a Worker.
+marker.worker.serializeDataOffMainThread	=Worker でデータをシリアライズ
+marker.worker.serializeDataOnMainThread		=メインスレッドでデータをシリアライズ
+marker.worker.deserializeDataOffMainThread	=Worker でデータをデシリアライズ
+marker.worker.deserializeDataOnMainThread	=メインスレッドでデータをデシリアライズ
+
+# The type of operation performed by a MessagePort
+marker.messagePort.serializeData		=データをシリアライズ
+marker.messagePort.deserializeData		=データをデシリアライズ
+
+# Strings used in the waterfall sidebar as values.
+marker.value.unknownFrame			=<位置不明>
+marker.value.DOMEventTargetPhase		=ターゲット
+marker.value.DOMEventCapturingPhase		=キャプチャ
+marker.value.DOMEventBubblingPhase		=バブリング
+
+# LOCALIZATION NOTE (marker.gcreason.label.*):
+# These strings are used to give a concise but readable description of a GC reason.
+marker.gcreason.label.API			=API 呼び出し
+marker.gcreason.label.EAGER_ALLOC_TRIGGER	=過度の割り当て要求
+marker.gcreason.label.DESTROY_RUNTIME		=シャットダウン
+marker.gcreason.label.LAST_DITCH		=メモリー不足
+marker.gcreason.label.TOO_MUCH_MALLOC		=割り当て量過多
+marker.gcreason.label.ALLOC_TRIGGER		=割り当て回数過多
+marker.gcreason.label.DEBUG_GC			=デバッグ GC
+marker.gcreason.label.COMPARTMENT_REVIVED	=破棄されたグローバルオブジェクトの復帰
+marker.gcreason.label.RESET			=インクリメンタルサイクルの終了
+marker.gcreason.label.OUT_OF_NURSERY		=新世代領域空き不足
+marker.gcreason.label.EVICT_NURSERY		=新世代領域空き確保
+marker.gcreason.label.FULL_STORE_BUFFER		=アクティブな新世代オブジェクト過多
+marker.gcreason.label.SHARED_MEMORY_LIMIT	=多量な割り当て失敗
+marker.gcreason.label.PERIODIC_FULL_GC		=定期完全 GC
+marker.gcreason.label.INCREMENTAL_TOO_SLOW	=高頻度の割り当て
+marker.gcreason.label.COMPONENT_UTILS		=Cu.forceGC
+marker.gcreason.label.MEM_PRESSURE		=空きメモリーわずか
+marker.gcreason.label.CC_WAITING		=サイクルコレクションによる実行
+marker.gcreason.label.CC_FINISHED		=サイクルコレクション完了
+marker.gcreason.label.CC_FORCED			=サイクルコレクションによる実行
+marker.gcreason.label.LOAD_END			=ページの読み込み完了
+marker.gcreason.label.PAGE_HIDE			=バックグラウンドへ移動
+marker.gcreason.label.NSJSCONTEXT_DESTROY	=JS コンテキスト破損
+marker.gcreason.label.SET_NEW_DOCUMENT		=新しいドキュメント
+marker.gcreason.label.SET_DOC_SHELL		=新しいドキュメント
+marker.gcreason.label.DOM_UTILS			=API 呼び出し
+marker.gcreason.label.DOM_IPC			=プロセス間通信
+marker.gcreason.label.DOM_WORKER		=定期 Worker GC
+marker.gcreason.label.INTER_SLICE_GC		=定期インクリメンタル GC スライス
+marker.gcreason.label.FULL_GC_TIMER		=定期完全 GC
+marker.gcreason.label.SHUTDOWN_CC		=シャットダウン
+marker.gcreason.label.DOM_WINDOW_UTILS		=ユーザー操作なし
+marker.gcreason.label.USER_INACTIVE		=ユーザー操作なし
+
+# The name of a nursery collection.
+## (^m^) 世代別ガベージコレクションの若い領域のほう
+marker.nurseryCollection			=ナーサリーコレクション
diff --git a/l10n-ja/devtools/client/memory.properties b/l10n-ja/devtools/client/memory.properties
new file mode 100644
index 0000000000..27d1f4585e
--- /dev/null
+++ b/l10n-ja/devtools/client/memory.properties
@@ -0,0 +1,428 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. 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 (snapshot.io.save): The label for the link that saves a
+# snapshot to disk.
+snapshot.io.save			=保存
+
+# LOCALIZATION NOTE (snapshot.io.delete): The label for the link that deletes
+# a snapshot
+snapshot.io.delete			=削除
+
+# LOCALIZATION NOTE (snapshot.io.save.window): The title for the window
+# displayed when saving a snapshot to disk.
+snapshot.io.save.window			=スナップショットを保存
+
+# LOCALIZATION NOTE (snapshot.io.import.window): The title for the window
+# displayed when importing a snapshot form disk.
+snapshot.io.import.window		=スナップショットをインポート
+
+# LOCALIZATION NOTE (snapshot.io.filter): The title for the filter used to
+# filter file types (*.fxsnapshot)
+snapshot.io.filter			=Firefox スナップショット
+
+# 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			=処理中...
+
+# LOCALIZATION NOTE (checkbox.recordAllocationStacks): The label describing the
+# boolean checkbox whether or not to record call stacks.
+checkbox.recordAllocationStacks		=コールスタックを記録
+
+# LOCALIZATION NOTE (checkbox.recordAllocationStacks.tooltip): The tooltip for
+# the label describing the boolean checkbox whether or not to record call
+# stacks.
+checkbox.recordAllocationStacks.tooltip	=オブジェクトが割り当てられた時のコールスタックの記録を切り替えます。後続のスナップショットにラベル付けやグループ化ができるようになりますが、このオプションを切り替えた後に作成されたオブジェクトにしかできません。コールスタックの記録は性能上のオーバーヘッドが生じます。
+
+# LOCALIZATION NOTE (toolbar.displayBy): The label describing the select menu
+# options of the display options.
+toolbar.displayBy				=グループ化:
+
+# LOCALIZATION NOTE (toolbar.displayBy.tooltip): The tooltip for the label
+# describing the select menu options of the display options.
+toolbar.displayBy.tooltip			=グループ化の方法を変更します
+
+# LOCALIZATION NOTE (toolbar.pop-view): The text in the button to go back to the
+# previous view.
+## "\u2190" is "←"
+toolbar.pop-view				=\u2190
+
+# 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				=総計へ戻ります
+
+# LOCALIZATION NOTE (toolbar.viewing-individuals): The text letting the user
+# know that they are viewing individual nodes from a census group.
+## "\u2042" is "⁂"
+toolbar.viewing-individuals			=\u2042 グループ内を個別に表示
+
+# LOCALIZATION NOTE (censusDisplays.coarseType.tooltip): The tooltip for the
+# "coarse type" display option.
+censusDisplays.coarseType.tooltip		=型でグループ化します
+
+# LOCALIZATION NOTE (censusDisplays.allocationStack.tooltip): The tooltip for
+# the "call stack" display option.
+censusDisplays.allocationStack.tooltip		=オブジェクトの割り当て時に記録された JavaScript スタックでグループ化します
+
+# LOCALIZATION NOTE (censusDisplays.invertedAllocationStack.tooltip): The
+# tooltip for the "inverted call stack" display option.
+censusDisplays.invertedAllocationStack.tooltip	=オブジェクトの作成時に記録された逆転 JavaScript コールスタックでグループ化します
+
+# LOCALIZATION NOTE (toolbar.labelBy): The label describing the select menu
+# options of the label options.
+toolbar.labelBy					=ラベル:
+
+# LOCALIZATION NOTE (toolbar.labelBy.tooltip): The tooltip for the label describing the
+# select menu options of the label options.
+toolbar.labelBy.tooltip				=グループ化するラベルを変更します
+
+# LOCALIZATION NOTE (dominatorTreeDisplays.coarseType.tooltip): The tooltip for
+# the "coarse type" dominator tree display option.
+dominatorTreeDisplays.coarseType.tooltip	=大まかなカテゴリーに一致するオブジェクトにラベル付けします
+
+# LOCALIZATION NOTE (dominatorTreeDisplays.allocationStack.tooltip): The
+# tooltip for the "call stack" dominator tree display option.
+dominatorTreeDisplays.allocationStack.tooltip	=割り当てられたときに記録された JavaScript スタックでオブジェクトにラベル付けします
+
+# LOCALIZATION NOTE (treeMapDisplays.coarseType.tooltip): The tooltip for
+# the "coarse type" tree map display option.
+treeMapDisplays.coarseType.tooltip		=オブジェクトに相応しい大まかなカテゴリーでラベル付けします
+
+# LOCALIZATION NOTE (toolbar.view): The label for the view selector in the
+# toolbar.
+toolbar.view				=表示:
+
+# LOCALIZATION NOTE (toolbar.view.tooltip): The tooltip for the label for the
+# view selector in the toolbar.
+toolbar.view.tooltip			=スナップショットの表示を変更します
+
+# LOCALIZATION NOTE (toolbar.view.census): The label for the census view option
+# in the toolbar.
+toolbar.view.census			=総計
+
+# LOCALIZATION NOTE (toolbar.view.census.tooltip): The tooltip for the label for
+# the census view option in the toolbar.
+toolbar.view.census.tooltip		=収集オブジェクトをグループ化したスナップショットの内容の概要を表示します
+
+# LOCALIZATION NOTE (toolbar.view.dominators): The label for the dominators view
+# option in the toolbar.
+toolbar.view.dominators			=ドミネータ
+
+# LOCALIZATION NOTE (toolbar.view.dominators.tooltip): The tooltip for the label
+# for the dominators view option in the toolbar.
+toolbar.view.dominators.tooltip		=ドミネータツリーを表示してスナップショット内で最大の構造体を表面化させます
+
+# LOCALIZATION NOTE (toolbar.view.treemap): The label for the tree map option
+# in the toolbar.
+toolbar.view.treemap			=ツリーマップ
+
+# LOCALIZATION NOTE (toolbar.view.treemap.tooltip): The tooltip for the label for
+# the tree map view option in the toolbar.
+toolbar.view.treemap.tooltip		=メモリー使用を視覚化します: 大きなブロックはメモリー使用の多くを占めています
+
+# LOCALIZATION NOTE (take-snapshot): The label describing the button that
+# initiates taking a snapshot, either as the main label, or a tooltip.
+take-snapshot				=スナップショットを採取
+
+# LOCALIZATION NOTE (import-snapshot): The label describing the button that
+# initiates importing a snapshot.
+import-snapshot				=インポート...
+
+# LOCALIZATION NOTE (clear-snapshots.tooltip): The tooltip for the button that
+# deletes existing snapshot.
+clear-snapshots.tooltip			=スナップショットをすべて削除します
+
+# LOCALIZATION NOTE (diff-snapshots.tooltip): The tooltip for the button that
+# initiates selecting two snapshots to diff with each other.
+diff-snapshots.tooltip			=スナップショットを比較します
+
+# LOCALIZATION NOTE (filter.placeholder): The placeholder text used for the
+# memory tool's filter search box.
+filter.placeholder			=絞り込み
+
+# LOCALIZATION NOTE (filter.tooltip): The tooltip text used for the memory
+# tool's filter search box.
+filter.tooltip				=スナップショットの内容を絞り込みます
+
+# LOCALIZATION NOTE (tree-item.view-individuals.tooltip): The tooltip for the
+# button to view individuals in this group.
+tree-item.view-individuals.tooltip	=このグループ内の個別のノードと保持するパスを表示します
+
+# 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			=続きを取得...
+
+# LOCALIZATION NOTE (tree-item.rootlist): The label for the root of the
+# dominator tree.
+tree-item.rootlist			=GC ルート
+
+# 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			=(有効なスタックはありません)
+
+# 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			=(有効なファイル名はありません)
+
+# 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				=(ルート)
+
+# 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			=ベースライン
+
+# LOCALIZATION NOTE (diffing.comparison): The name of the snapshot being
+# compared to the baseline in a diffing comparison.
+diffing.comparison			=比較
+
+# LOCALIZATION NOTE (diffing.prompt.selectBaseline): The prompt to select the
+# first snapshot when doing a diffing comparison.
+diffing.prompt.selectBaseline		=ベースラインスナップショットを選択してください
+
+# LOCALIZATION NOTE (diffing.prompt.selectComparison): The prompt to select the
+# second snapshot when doing a diffing comparison.
+diffing.prompt.selectComparison		=ベースラインと比較するスナップショットを選択してください
+
+# 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			=エラー
+
+# 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		=スナップショットの比較中にエラーが発生しました。
+
+# 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		=差分を計算中...
+
+# 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		=差分を計算しています...
+
+# LOCALIZATION NOTE (diffing.state.selecting): The label describing the diffing
+# state SELECTING.
+diffing.state.selecting			=比較する 2 つのスナップショットを選択
+
+# 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		=比較する 2 つのスナップショットを選択してください
+
+# LOCALIZATION NOTE (dominatorTree.state.computing): The label describing the
+# dominator tree state COMPUTING.
+dominatorTree.state.computing		=ドミネータレポートの生成中...
+
+# LOCALIZATION NOTE (dominatorTree.state.computing.full): The label describing the
+# dominator tree state COMPUTING, used in the dominator tree view.
+dominatorTree.state.computing.full	=ドミネータツリーを生成しています...
+
+# LOCALIZATION NOTE (dominatorTree.state.fetching): The label describing the
+# dominator tree state FETCHING.
+dominatorTree.state.fetching		=サイズの計算中...
+
+# LOCALIZATION NOTE (dominatorTree.state.fetching.full): The label describing the
+# dominator tree state FETCHING, used in the dominator tree view.
+dominatorTree.state.fetching.full	=ドミネータの保持サイズを計算しています...
+
+# LOCALIZATION NOTE (dominatorTree.state.incrementalFetching): The label
+# describing the dominator tree state INCREMENTAL_FETCHING.
+dominatorTree.state.incrementalFetching	=取得中...
+
+# LOCALIZATION NOTE (dominatorTree.state.incrementalFetching.full): The label describing the
+# dominator tree state INCREMENTAL_FETCHING, used in the dominator tree view.
+dominatorTree.state.incrementalFetching.full	=続きを取得しています...
+
+# LOCALIZATION NOTE (dominatorTree.state.error): The label describing the
+# dominator tree state ERROR.
+dominatorTree.state.error		=エラー
+
+# LOCALIZATION NOTE (dominatorTree.state.error.full): The label describing the
+# dominator tree state ERROR, used in the dominator tree view.
+dominatorTree.state.error.full		=ドミネータツリーの処理中にエラーが発生しました。
+
+# LOCALIZATION NOTE (snapshot.state.saving.full): The label describing the
+# snapshot state SAVING, used in the main heap view.
+snapshot.state.saving.full		=スナップショットを保存しています...
+
+# 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		=スナップショットを読み込んでいます...
+
+# 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	=総計レポートを生成しています...
+
+# 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	=ツリーマップを保存しています...
+
+# LOCALIZATION NOTE (snapshot.state.error.full): The label describing the
+# snapshot state ERROR, used in the main heap view.
+snapshot.state.error.full		=スナップショットの処理中にエラーが発生しました。
+
+# LOCALIZATION NOTE (individuals.state.error): The short message displayed when
+# there is an error fetching individuals from a group.
+individuals.state.error			=エラー
+
+# LOCALIZATION NOTE (individuals.state.error.full): The longer message displayed
+# when there is an error fetching individuals from a group.
+individuals.state.error.full		=グループ内の個別のノードの取得中にエラーが発生しました
+
+# LOCALIZATION NOTE (individuals.state.fetching): The short message displayed
+# while fetching individuals.
+individuals.state.fetching		=取得中...
+
+# LOCALIZATION NOTE (individuals.state.fetching.full): The longer message
+# displayed while fetching individuals.
+individuals.state.fetching.full		=グループ内の個別のノードを取得しています...
+
+# LOCALIZATION NOTE (individuals.field.node): The header label for an individual
+# node.
+individuals.field.node			=ノード
+
+# LOCALIZATION NOTE (individuals.field.node.tooltip): The tooltip for the header
+# label for an individual node.
+individuals.field.node.tooltip		=スナップショット内の個別のノード
+
+# LOCALIZATION NOTE (snapshot.state.saving): The label describing the snapshot
+# state SAVING, used in the snapshot list view
+snapshot.state.saving			=スナップショットの保存中...
+
+# LOCALIZATION NOTE (snapshot.state.importing): The label describing the
+# snapshot state IMPORTING, used in the snapshot list view
+snapshot.state.importing		=スナップショットのインポート中...
+
+# 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			=スナップショットの読み込み中...
+
+# LOCALIZATION NOTE (snapshot.state.saving-census): The label describing the
+# snapshot state SAVING, used in snapshot list view.
+snapshot.state.saving-census		=レポートの保存中...
+
+# LOCALIZATION NOTE (snapshot.state.saving-census): The label describing the
+# snapshot state SAVING, used in snapshot list view.
+snapshot.state.saving-tree-map		=ツリーマップの保存中...
+
+# LOCALIZATION NOTE (snapshot.state.error): The label describing the snapshot
+# state ERROR, used in the snapshot list view.
+snapshot.state.error			=エラー
+
+# LOCALIZATION NOTE (heapview.no-difference): Message displayed when there is no
+# difference between two snapshots.
+heapview.no-difference			=ベースラインとの比較で違いがありません。
+
+# LOCALIZATION NOTE (heapview.none-match): Message displayed when there are no
+# matches when filtering.
+heapview.none-match			=一致なし。
+
+# LOCALIZATION NOTE (heapview.none-match): Message displayed when there report
+# is empty.
+heapview.empty				=レポートなし。
+
+# 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		=コールスタックが見つかりませんでした。スナップショットを採取する前にコールスタックを記録してください。
+
+# LOCALIZATION NOTE (heapview.field.retainedSize): The name of the column in the
+# dominator tree view for retained byte sizes.
+heapview.field.retainedSize		=保持サイズ (バイト)
+
+# 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	=オブジェクト自身のサイズの合計です。このオブジェクトに関連する他の生存オブジェクトすべてのサイズを含みます
+
+# LOCALIZATION NOTE (heapview.field.shallowSize): The name of the column in the
+# dominator tree view for shallow byte sizes.
+heapview.field.shallowSize		=シャローサイズ (バイト)
+
+# 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	=オブジェクト自身のサイズです
+
+# LOCALIZATION NOTE (dominatortree.field.label): The name of the column in the
+# dominator tree for an object's label.
+dominatortree.field.label		=ドミネータ
+
+# 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	=メモリー内のオブジェクトのラベルです
+
+# LOCALIZATION NOTE (heapview.field.bytes): The name of the column in the heap
+# view for bytes.
+heapview.field.bytes			=バイト
+
+# LOCALIZATION NOTE (heapview.field.bytes.tooltip): The tooltip for the column
+# header in the heap view for bytes.
+heapview.field.bytes.tooltip		=このグループに占有されているバイト数です。サブグループは含みません
+
+# LOCALIZATION NOTE (heapview.field.count): The name of the column in the heap
+# view for count.
+heapview.field.count			=個数
+
+# LOCALIZATION NOTE (heapview.field.count.tooltip): The tooltip for the column
+# header in the heap view for count.
+heapview.field.count.tooltip		=このグループの到達可能オブジェクトの数です。サブグループは含みません
+
+# LOCALIZATION NOTE (heapview.field.totalbytes): The name of the column in the
+# heap view for total bytes.
+heapview.field.totalbytes		=合計バイト
+
+# LOCALIZATION NOTE (heapview.field.totalbytes.tooltip): The tooltip for the
+# column header in the heap view for total bytes.
+heapview.field.totalbytes.tooltip	=このグループに占有されているバイト数です。サブグループを含みます
+
+# LOCALIZATION NOTE (heapview.field.totalcount): The name of the column in the
+# heap view for total count.
+heapview.field.totalcount		=合計数
+
+# LOCALIZATION NOTE (heapview.field.totalcount.tooltip): The tooltip for the
+# column header in the heap view for total count.
+heapview.field.totalcount.tooltip	=このグループの到達可能オブジェクトの数です。サブグループを含みます
+
+# LOCALIZATION NOTE (heapview.field.name): The name of the column in the heap
+# view for name.
+heapview.field.name			=グループ
+
+# LOCALIZATION NOTE (heapview.field.name.tooltip): The tooltip for the column
+# header in the heap view for name.
+heapview.field.name.tooltip		=このグループの名前です
+
+# LOCALIZATION NOTE (shortest-paths.header): The header label for the shortest
+# paths pane.
+shortest-paths.header			=保持パス (Garbage Collector ルートから)
+
+# 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		=保持パスを表示するアイテムを選択してください
+
+# LOCALIZATION NOTE (tree-map.node-count): The label for the count value of a
+# node in the tree map
+tree-map.node-count			=ノード数
diff --git a/l10n-ja/devtools/client/menus.properties b/l10n-ja/devtools/client/menus.properties
new file mode 100644
index 0000000000..ced7c3da77
--- /dev/null
+++ b/l10n-ja/devtools/client/menus.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/.
+
+# 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		=リモートデバッグ
+devtoolsRemoteDebugging.accesskey	=R
+
+browserConsoleCmd.label			=ブラウザーコンソール
+browserConsoleCmd.accesskey		=B
+
+responsiveDesignMode.label		=レスポンシブデザインモード
+responsiveDesignMode.accesskey		=R
+
+eyedropper.label			=スポイト
+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		=ブラウザーツールボックス
+browserToolboxMenu.accesskey		=e
+
+# LOCALIZATION NOTE (browserContentToolboxMenu.label): This is the label for the
+# application menu item that opens the browser content toolbox UI in the Tools menu.
+# This toolbox allows to debug the chrome of the content process in multiprocess builds.
+browserContentToolboxMenu.label		=ブラウザーコンテンツツールボックス
+browserContentToolboxMenu.accesskey	=x
+
+devToolboxMenuItem.label		=開発ツールを表示
+devToolboxMenuItem.accesskey		=T
+
+getMoreDevtoolsCmd.label		=その他のツールを入手
+getMoreDevtoolsCmd.accesskey		=M
diff --git a/l10n-ja/devtools/client/netmonitor.properties b/l10n-ja/devtools/client/netmonitor.properties
new file mode 100644
index 0000000000..c68c6b52a3
--- /dev/null
+++ b/l10n-ja/devtools/client/netmonitor.properties
@@ -0,0 +1,1539 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. 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 (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	=このリソースの取得に使われる接続は暗号化されています。
+
+# 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	=このリソースの取得に使われる接続は安全ではありません。
+
+# 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	=暗号化に問題があるため、読み込まれたリソースを無視しました。
+
+# LOCALIZATION NOTE (netmonitor.security.state.weak)
+# This string is used as an tooltip for request that had minor security issues
+netmonitor.security.state.weak		=このリソースは、十分に保護できない暗号を使用した接続を通して転送されました。
+
+# 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		=有効
+
+# 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		=無効
+
+# 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		=ホスト %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	=<利用不可>
+
+# LOCALIZATION NOTE (collapseDetailsPane): This is the tooltip for the button
+# that collapses the network details pane in the UI.
+collapseDetailsPane	=要求の詳細を閉じる
+
+# LOCALIZATION NOTE (collapseActionPane): This is the tooltip for the button
+# that collapses the network action pane in the UI.
+collapseActionPane	=ネットワークアクションを閉じる
+
+# LOCALIZATION NOTE (allTabsMenuButton.tooltip): The tooltip that gets
+# displayed when hovering over the tabs overflow button.
+allTabsMenuButton.tooltip	=すべてのタブを表示します
+
+# LOCALIZATION NOTE (headersEmptyText): This is the text displayed in the
+# headers tab of the network details pane when there are no headers available.
+headersEmptyText	=この要求にはヘッダーがありません
+
+# LOCALIZATION NOTE (headersFilterText): This is the text displayed in the
+# headers tab of the network details pane for the filtering input.
+headersFilterText	=ヘッダーを検索
+
+# LOCALIZATION NOTE (messagesEmptyText): This is the text displayed in the
+# WebSockets tab of the network details pane when there are no frames available.
+messagesEmptyText	=この要求にはメッセージがありません
+
+# LOCALIZATION NOTE (cookiesEmptyText): This is the text displayed in the
+# cookies tab of the network details pane when there are no cookies available.
+cookiesEmptyText	=この要求には Cookie がありません
+
+# LOCALIZATION NOTE (cookiesFilterText): This is the text displayed in the
+# cookies tab of the network details pane for the filtering input.
+cookiesFilterText	=Cookie を検索
+
+# 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	=この要求には有効な応答データがありません
+
+# LOCALIZATION NOTE (paramsEmptyText): This is the text displayed in the
+# request tab of the network details pane when there are no params available.
+paramsEmptyText		=この要求にはパラメーターがありません
+
+# LOCALIZATION NOTE (paramsFilterText): This is the text displayed in the
+# request tab of the network details pane for the filtering input.
+paramsFilterText	=要求パラメーターを検索
+
+# LOCALIZATION NOTE (paramsQueryString): This is the label displayed
+# in the network details request tab identifying the query string.
+paramsQueryString	=クエリー文字列
+
+# LOCALIZATION NOTE (paramsFormData): This is the label displayed
+# in the network details request tab identifying the form data.
+paramsFormData		=フォームデータ
+
+# LOCALIZATION NOTE (paramsPostPayload): This is the label displayed
+# in the network details request tab identifying the request payload.
+paramsPostPayload	=要求ペイロード
+
+# LOCALIZATION NOTE (requestHeaders): This is the label displayed
+# in the network details headers tab identifying the request headers.
+requestHeaders		=要求ヘッダー
+
+# 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	=アップロードストリームからの要求ヘッダー
+
+# LOCALIZATION NOTE (responseHeaders): This is the label displayed
+# in the network details headers tab identifying the response headers.
+responseHeaders		=応答ヘッダー
+
+# LOCALIZATION NOTE (requestCookies): This is the label displayed
+# in the network details request tab identifying the request cookies.
+requestCookies		=要求 Cookie
+
+# LOCALIZATION NOTE (responseCookies): This is the label displayed
+# in the network details request tab identifying the response cookies.
+responseCookies		=応答 Cookie
+
+# LOCALIZATION NOTE (responsePayload): This is the label displayed
+# in the network details response tab identifying the response payload.
+responsePayload		=応答ペイロード
+
+# LOCALIZATION NOTE (jsonFilterText): This is the text displayed
+# in the response tab of the network details pane for the JSON filtering input.
+jsonFilterText		=プロパティを検索
+
+# 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 \u2192 コールバック %S()
+
+# 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	=応答が省略されています
+
+# 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	=要求が省略されています
+
+# LOCALIZATION NOTE (responsePreview): This is the text displayed
+# in the response tab of the network details pane for an HTML preview.
+responsePreview		=プレビュー
+
+# 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 (RCWN)
+
+# LOCALIZATION NOTE (networkMenu.sortedAsc): This is the tooltip displayed
+# in the network table toolbar, for any column that is sorted ascending.
+networkMenu.sortedAsc				=昇順
+
+# LOCALIZATION NOTE (networkMenu.sortedDesc): This is the tooltip displayed
+# in the network table toolbar, for any column that is sorted descending.
+networkMenu.sortedDesc				=降順
+
+# LOCALIZATION NOTE (networkMenu.summary.tooltip.perf): A tooltip explaining
+# what the perf button does
+networkMenu.summary.tooltip.perf		=パフォーマンス解析を開始
+
+# LOCALIZATION NOTE (networkMenu.summary.tooltip.domContentLoaded): A tooltip explaining
+# what the DOMContentLoaded label displays
+networkMenu.summary.tooltip.domContentLoaded	=“DOMContentLoad” イベント発生時の時刻
+
+# LOCALIZATION NOTE (networkMenu.summary.tooltip.load): A tooltip explaining
+# what the load label displays
+networkMenu.summary.tooltip.load		=“load” イベント発生時の時刻
+
+# 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		=要求 #1 件
+
+# LOCALIZATION NOTE (networkMenu.summary.requestsCountEmpty): This label is displayed
+# in the network table footer when there are no requests
+networkMenu.summary.requestsCountEmpty		=要求はありません
+
+# LOCALIZATION NOTE (networkMenu.summary.tooltip.requestsCount): A tooltip explaining
+# what the requestsCount label displays
+networkMenu.summary.tooltip.requestsCount	=要求件数
+
+# LOCALIZATION NOTE (networkMenu.summary.transferred): This label is displayed
+# in the network table footer providing the transferred size.
+networkMenu.summary.transferred			=%S / %S 転送済み
+
+# LOCALIZATION NOTE (networkMenu.summary.tooltip.transferred): A tooltip explaining
+# what the transferred label displays
+networkMenu.summary.tooltip.transferred		=サイズ/全要求の転送サイズ
+
+# LOCALIZATION NOTE (networkMenu.summary.finish): This label is displayed
+# in the network table footer providing the transfer time.
+networkMenu.summary.finish			=完了: %S
+
+# LOCALIZATION NOTE (networkMenu.summary.tooltip.finish): A tooltip explaining
+# what the finish label displays
+networkMenu.summary.tooltip.finish		=全要求の読み込みに必要な合計時間
+
+# 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		=メッセージ #1 件
+
+# LOCALIZATION NOTE (networkMenu.ws.summary.framesCountEmpty): This label is displayed
+# in the messages table footer when there are no frames
+networkMenu.ws.summary.framesCountEmpty		=メッセージはありません
+
+# LOCALIZATION NOTE (networkMenu.ws.summary.tooltip.framesCount): A tooltip explaining
+# what the framesCount label displays
+networkMenu.ws.summary.tooltip.framesCount	=メッセージ数です
+
+# LOCALIZATION NOTE (networkMenu.ws.summary.tooltip.framesTotalSize): A tooltip explaining
+# what the framesTotalSize label displays
+networkMenu.ws.summary.tooltip.framesTotalSize	=表示メッセージの合計サイズです
+
+# 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=合計 %1$S、送信 %2$S、受信 %3$S
+
+# LOCALIZATION NOTE (networkMenu.ws.summary.tooltip.framesTotalTime): A tooltip explaining
+# what framesTotalTime displays
+networkMenu.ws.summary.tooltip.framesTotalTime	=最初のメッセージから最後のメッセージまでの合計経過時間です
+
+# LOCALIZATION NOTE (networkMenu.sizeB): This is the label displayed
+# in the network menu specifying the size of a request (in bytes).
+networkMenu.sizeB	=%S バイト
+
+# LOCALIZATION NOTE (networkMenu.sizeKB): This is the label displayed
+# in the network menu specifying the size of a request (in kilobytes).
+networkMenu.sizeKB	=%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	=転送サイズは利用できません
+
+# 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		=キャッシュ
+
+# 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		=ブロック
+
+# 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		=%S によりブロックされました
+
+# LOCALIZATION NOTE (networkMenu.blockedTooltip): This is a the text displayed
+# as a tooltip for the blocked icon in the request list
+networkMenu.blockedTooltip	=ブロックされました
+
+# 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	=合計 %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	=ブロック %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	=接続 %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	=送信 %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	=待機 %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	=受信 %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	=要求タイミング
+
+# 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		=サーバータイミング
+
+# 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		=キュー開始: %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		=要求開始: %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		=ダウンロード開始: %S
+
+# LOCALIZATION NOTE (netmonitor.timings.noTimings): Message that displays in the
+# timings pane when thea request has been blocked
+netmonitor.timings.noTimings		=この要求のタイミング情報はありません
+
+# 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 秒
+
+# LOCALIZATION NOTE (networkMenu.minute): This is the label displayed
+# in the network menu specifying timing interval divisions (in minutes).
+networkMenu.minute	=%S 分
+
+# 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	=読み込み中
+
+# 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	=なし
+
+# 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	=お待ちください...
+
+# 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		=データがありません
+
+# LOCALIZATION NOTE (charts.sizeKB): This is the label displayed
+# in pie or table charts specifying the size of a request (in kilobytes).
+charts.sizeKB			=%S KB
+
+# LOCALIZATION NOTE (charts.transferredSizeKB): This is the label displayed
+# in pie or table charts specifying the size of a transferred request (in kilobytes).
+charts.transferredSizeKB	=%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 秒
+
+# LOCALIZATION NOTE (charts.totalTransferredSize): This is the label displayed
+# in the performance analysis view for total transferred size, in kilobytes.
+charts.totalTransferredSize	=転送済みサイズ: %S KB
+
+# LOCALIZATION NOTE (charts.cacheEnabled): This is the label displayed
+# in the performance analysis view for "cache enabled" charts.
+charts.cacheEnabled		=キャッシュ済み
+
+# LOCALIZATION NOTE (charts.cacheDisabled): This is the label displayed
+# in the performance analysis view for "cache disabled" charts.
+charts.cacheDisabled		=非キャッシュ
+
+# LOCALIZATION NOTE (charts.learnMore): This is the label displayed
+# in the performance analysis view, with a link to external documentation.
+charts.learnMore		=パフォーマンス解析の詳細
+
+# LOCALIZATION NOTE (charts.totalSize): This is the label displayed
+# in the performance analysis view for total requests size, in kilobytes.
+charts.totalSize		=サイズ: %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		=所要時間: #1 秒
+
+# 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	=所要時間 (ブロック以外): #1 秒
+
+# LOCALIZATION NOTE (charts.totalCached): This is the label displayed
+# in the performance analysis view for total cached responses.
+charts.totalCached		=キャッシュ済み応答: %S
+
+# LOCALIZATION NOTE (charts.totalCount): This is the label displayed
+# in the performance analysis view for total requests.
+charts.totalCount		=すべての応答: %S
+
+# 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			=サイズ
+
+# LOCALIZATION NOTE (charts.type): This is the label displayed
+# in the header column in the performance analysis view for type of request.
+charts.type			=種類
+
+# 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		=転送済み
+
+# LOCALIZATION NOTE (charts.time): This is the label displayed
+# in the header column in the performance analysis view for time of request.
+charts.time			=所要時間
+
+# 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		=所要時間 (ブロック以外)
+
+# 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	=元の URL: %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	=デコード済み URL: %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		=発行対象
+
+# LOCALIZATION NOTE (certmgr.certdetail.cn):
+# A label used for Issued To and Issued By sub-section in security tab
+certmgr.certdetail.cn			=一般名称 (CN):
+
+# LOCALIZATION NOTE (certmgr.certdetail.o):
+# A label used for Issued To and Issued By sub-section in security tab
+certmgr.certdetail.o			=組織 (O):
+
+# LOCALIZATION NOTE (certmgr.certdetail.ou):
+# A label used for Issued To and Issued By sub-section in security tab
+certmgr.certdetail.ou			=部門 (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		=発行者
+
+# 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		=証明書の有効期間
+
+# LOCALIZATION NOTE (certmgr.begins):
+# A label used for Period of Validity sub-section in security tab
+certmgr.begins				=発行日:
+
+# LOCALIZATION NOTE (certmgr.expires):
+# A label used for Period of Validity sub-section in security tab
+certmgr.expires				=有効期限:
+
+# 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		=フィンガープリント
+
+# LOCALIZATION NOTE (certmgr.certdetail.sha256fingerprint):
+# A label used for Fingerprints sub-section in security tab
+certmgr.certdetail.sha256fingerprint	=SHA-256 フィンガープリント:
+
+# LOCALIZATION NOTE (certmgr.certdetail.sha1fingerprint):
+# A label used for Fingerprints sub-section in security tab
+certmgr.certdetail.sha1fingerprint	=SHA1 フィンガープリント:
+
+# LOCALIZATION NOTE (certmgr.certificateTransparency.label):
+# This string is used as a label in the security tab.
+certmgr.certificateTransparency.label			=透明性:
+
+# 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		=SCT レコードは有効です
+
+# 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	=SCT が十分ではありません
+
+# 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	=SCT が複数個ありません
+
+# LOCALIZATION NOTE (netmonitor.perfNotice1/2/3): These are the labels displayed
+# in the network table when empty to start performance analysis.
+netmonitor.perfNotice1		=• 
+netmonitor.perfNotice2		=ボタンをクリックすると、パフォーマンス解析を開始します。
+netmonitor.perfNotice3		=解析
+
+# LOCALIZATION NOTE (netmonitor.reload1/2/3): These are the labels displayed
+# in the network table when empty to start logging network requests.
+netmonitor.reloadNotice1	=• 要求を送信するかページを
+netmonitor.reloadNotice2	=再読み込み
+netmonitor.reloadNotice3	=すると、ネットワークの稼働状況を確認できます。
+
+# LOCALIZATION NOTE (netmonitor.toolbar.status3): This is the label displayed
+# in the network table toolbar, above the "status" column.
+netmonitor.toolbar.status3		=ステータス
+
+# LOCALIZATION NOTE (netmonitor.toolbar.method): This is the label displayed
+# in the network table toolbar, above the "method" column.
+netmonitor.toolbar.method		=メソッド
+
+# LOCALIZATION NOTE (netmonitor.toolbar.file): This is the label displayed
+# in the network table toolbar, above the "file" column.
+netmonitor.toolbar.file			=ファイル
+
+# 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		=プロトコル
+
+# LOCALIZATION NOTE (netmonitor.toolbar.domain): This is the label displayed
+# in the network table toolbar, above the "domain" column.
+netmonitor.toolbar.domain		=ドメイン
+
+# LOCALIZATION NOTE (netmonitor.toolbar.remoteip): This is the label displayed
+# in the network table toolbar, above the "remoteip" column.
+netmonitor.toolbar.remoteip		=リモート IP
+
+# LOCALIZATION NOTE (netmonitor.toolbar.initiator): This is the label displayed
+# in the network table toolbar, above the "initiator" column.
+netmonitor.toolbar.initiator		=初期化
+
+# LOCALIZATION NOTE (netmonitor.toolbar.type): This is the label displayed
+# in the network table toolbar, above the "type" column.
+netmonitor.toolbar.type			=タイプ
+
+# LOCALIZATION NOTE (netmonitor.toolbar.cookies): This is the label displayed
+# in the network table toolbar, above the "cookies" column.
+netmonitor.toolbar.cookies		=Cookie
+
+# 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		=スキーム
+
+# 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		=開始時刻
+
+# 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		=終了時刻
+
+# 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		=応答時間
+
+# 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		=間隔
+
+# 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		=遅延
+
+# 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		=転送量
+
+# 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		=サイズ
+
+# LOCALIZATION NOTE (netmonitor.toolbar.waterfall): This is the label displayed
+# in the network table toolbar, above the "waterfall" column.
+netmonitor.toolbar.waterfall		=タイムライン
+
+# LOCALIZATION NOTE (netmonitor.ws.toolbar.size): This is the label displayed
+# in the messages table header, above the "size" column.
+netmonitor.ws.toolbar.size		=サイズ
+
+# LOCALIZATION NOTE (netmonitor.ws.toolbar.data): This is the label displayed
+# in the messages table header, above the "data" column.
+netmonitor.ws.toolbar.data		=データ
+
+# 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		=時間
+
+# LOCALIZATION NOTE (netmonitor.ws.toolbar.eventName): This is the label displayed
+# in the messages table header, above the "eventName" column.
+netmonitor.ws.toolbar.eventName		=イベント名
+
+# LOCALIZATION NOTE (netmonitor.ws.toolbar.retry): This is the label displayed
+# in the messages table header, above the "retry" column.
+netmonitor.ws.toolbar.retry		=再試行
+
+# LOCALIZATION NOTE (netmonitor.ws.toolbar.lastEventId): This is the label displayed
+# in the messages table header, above the "lastEventId" column.
+netmonitor.ws.toolbar.lastEventId	=最新イベント 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		=消去
+
+# 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	=メッセージを絞り込み
+
+# 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		=列をリセット
+
+# LOCALIZATION NOTE (netmonitor.ws.context.all): This is the label displayed
+# on the context menu that shows "All" WebSocket frames.
+netmonitor.ws.context.all			=すべて
+
+# 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			=送信
+
+# 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			=受信
+
+# 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		=制御
+
+# 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			=メッセージをコピー
+
+# 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.connection.closed): This is the text displayed in the
+# websocket messages panel when the connection is closed
+netmonitor.ws.connection.closed			=接続を閉じました
+
+# 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				=送信
+
+# 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			=受信
+
+# LOCALIZATION NOTE (netmonitor.ws.rawData.header): This is the label displayed
+# in the messages panel identifying the raw data.
+netmonitor.ws.rawData.header			=生データ (%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	=リソースを検索...
+
+# LOCALIZATION NOTE (netmonitor.search.toolbar.close): This is the label
+# displayed in the search toolbar to close the search panel.
+netmonitor.search.toolbar.close			=検索パネルを閉じる
+
+# LOCALIZATION NOTE (netmonitor.search.toolbar.clear): This is the label
+# displayed in the search toolbar to clear the search panel.
+netmonitor.search.toolbar.clear			=検索結果を消去
+
+# 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		=大文字/小文字を区別
+
+# 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	=検索中...
+
+# 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	=検索がキャンセルされました。
+
+# 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$S is the number of files in which matching lines were found (netmonitor.search.status.labels.fileCount)
+netmonitor.search.status.labels.done		=検索完了。%2$S %1$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	=#1 行見つかりました
+
+# 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	=#1 個のファイルから
+
+# 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		=検索エラー。
+
+# LOCALIZATION NOTE (netmonitor.toolbar.requestBlocking): This is the tooltip displayed
+# over the toolbar's Request Blocking buttonn
+netmonitor.toolbar.requestBlocking		=要求をブロックします
+
+# LOCALIZATION NOTE (netmonitor.actionbar.requestBlocking2): This is the label displayed
+# in the action bar's request blocking tab
+netmonitor.actionbar.requestBlocking2		=ブロック
+
+# 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		=要求のブロックを有効にする
+
+# LOCALIZATION NOTE (netmonitor.actionbar.blockSearchPlaceholder): This is the
+# placeholder text for the request addition form
+netmonitor.actionbar.blockSearchPlaceholder	=URL を含むリソースをブロック
+
+# LOCALIZATION NOTE (netmonitor.actionbar.removeBlockedUrl): This is the
+# tooltip shown over the remove button for blocked URL item
+netmonitor.actionbar.removeBlockedUrl		=パターンを削除
+
+# LOCALIZATION NOTE (netmonitor.actionbar.requestBlockingUsageNotice): This is the
+# usage notice displayed when network blocking list is empty
+netmonitor.actionbar.requestBlockingUsageNotice	=ブロックする要求に一致する URL パターンをここに追加してください。
+
+# 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	=パターンを追加するか、ネットワーク要求リストから行をドラッグするとブロックを開始します。
+
+# LOCALIZATION NOTE (netmonitor.requestBlockingMenu.removeAllBlockedUrls): This is the
+# context menu item for removing all blocked URLs
+netmonitor.requestBlockingMenu.removeAllBlockedUrls	=すべて削除
+
+# LOCALIZATION NOTE (netmonitor.requestBlockingMenu.enableAllBlockedUrls): This is the
+# context menu item for enabling all blocked URLs
+netmonitor.requestBlockingMenu.enableAllBlockedUrls	=すべて有効化
+
+# LOCALIZATION NOTE (netmonitor.requestBlockingMenu.disableAllBlockedUrls): This is the
+# context menu item for disabling all blocked URLs
+netmonitor.requestBlockingMenu.disableAllBlockedUrls	=すべて無効化
+
+# LOCALIZATION NOTE (netmonitor.actionbar.search): This is the label displayed
+# in the action bar's search tab
+netmonitor.actionbar.search			=検索
+
+# 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	=メモリーを節約するため #1 個のメッセージが省略されました
+
+# LOCALIZATION NOTE (disableMessagesTruncation): This is the text displayed
+# in the messages panel checkbox label for toggling message truncation.
+toggleMessagesTruncation		=今後のメッセージをすべて保持する
+
+# LOCALIZATION NOTE (toggleMessagesTruncation.title): This is the title used
+# to describe the checkbox used to toggle message truncation.
+toggleMessagesTruncation.title		=今後のメッセージをすべて保持し、省略されたメッセージも表示し続けます
+
+# LOCALIZATION NOTE (messageDataTruncated): This is the text displayed
+# to describe to describe data truncation in the messages panel.
+messageDataTruncated			=データは省略されました
+
+# LOCALIZATION NOTE (netmonitor.tab.headers): This is the label displayed
+# in the network details pane identifying the headers tab.
+netmonitor.tab.headers			=ヘッダー
+
+# LOCALIZATION NOTE (netmonitor.tab.messages): This is the label displayed
+# in the network details pane identifying the messages tab.
+netmonitor.tab.messages			=メッセージ
+
+# LOCALIZATION NOTE (netmonitor.tab.cookies): This is the label displayed
+# in the network details pane identifying the cookies tab.
+netmonitor.tab.cookies			=Cookie
+
+# LOCALIZATION NOTE (netmonitor.tab.cache): This is the label displayed
+# in the network details pane identifying the cache tab.
+netmonitor.tab.cache			=キャッシュ
+
+# LOCALIZATION NOTE (netmonitor.tab.params): This is the label displayed
+# in the network details pane identifying the params tab.
+netmonitor.tab.params			=パラメーター
+
+# LOCALIZATION NOTE (netmonitor.tab.request): This is the label displayed
+# in the network details pane identifying the request tab.
+netmonitor.tab.request			=要求
+
+# LOCALIZATION NOTE (netmonitor.tab.response): This is the label displayed
+# in the network details pane identifying the response tab.
+netmonitor.tab.response			=応答
+
+# LOCALIZATION NOTE (netmonitor.tab.timings): This is the label displayed
+# in the network details pane identifying the timings tab.
+netmonitor.tab.timings			=タイミング
+
+# LOCALIZATION NOTE (netmonitor.tab.stackTrace): This is the label displayed
+# in the network details pane identifying the stack-trace tab.
+netmonitor.tab.stackTrace		=スタックトレース
+
+# LOCALIZATION NOTE (netmonitor.tab.security): This is the label displayed
+# in the network details pane identifying the security tab.
+netmonitor.tab.security			=暗号化
+
+# LOCALIZATION NOTE (netmonitor.toolbar.filter.all): This is the label displayed
+# in the network toolbar for the "All" filtering button.
+netmonitor.toolbar.filter.all		=すべて
+
+# 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		=フォント
+
+# LOCALIZATION NOTE (netmonitor.toolbar.filter.images): This is the label displayed
+# in the network toolbar for the "Images" filtering button.
+netmonitor.toolbar.filter.images	=画像
+
+# LOCALIZATION NOTE (netmonitor.toolbar.filter.media): This is the label displayed
+# in the network toolbar for the "Media" filtering button.
+netmonitor.toolbar.filter.media		=メディア
+
+# 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		=その他
+
+# LOCALIZATION NOTE (netmonitor.toolbar.filterFreetext.label): This is the label
+# displayed in the network toolbar for the url filtering textbox.
+netmonitor.toolbar.filterFreetext.label	=URL で絞り込み
+
+# 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	=フィルタリングの詳細
+
+# LOCALIZATION NOTE (netmonitor.toolbar.enablePersistentLogs.label): This is the label
+# displayed for the checkbox for enabling persistent logs.
+netmonitor.toolbar.enablePersistentLogs.label	=永続ログ
+
+# LOCALIZATION NOTE (netmonitor.toolbar.enablePersistentLogs.tooltip): This is the tooltip
+# displayed for the checkbox for enabling persistent logs.
+netmonitor.toolbar.enablePersistentLogs.tooltip	=このオプションを有効にすると、新しいページへ移動しても要求リストが消去されなくなります。
+
+# LOCALIZATION NOTE (netmonitor.toolbar.disableCache.label): This is the label
+# displayed for the checkbox for disabling browser cache.
+netmonitor.toolbar.disableCache.label	=キャッシュを無効化
+
+# LOCALIZATION NOTE (netmonitor.toolbar.disableCache.tooltip): This is the tooltip
+# displayed for the checkbox for disabling browser cache.
+netmonitor.toolbar.disableCache.tooltip	=HTTP キャッシュを無効にします
+
+# LOCALIZATION NOTE (netmonitor.toolbar.clear): This is the label displayed
+# in the network toolbar for the "Clear" button.
+netmonitor.toolbar.clear		=消去
+
+# LOCALIZATION NOTE (netmonitor.toolbar.toggleRecording): This is the label displayed
+# in the network toolbar for the toggle recording button.
+netmonitor.toolbar.toggleRecording	=ネットワークログの記録を一時停止/再開
+
+# LOCALIZATION NOTE (netmonitor.toolbar.search): This is the tooltip label displayed
+# in the network toolbar for the search  button.
+netmonitor.toolbar.search		=検索します
+
+# LOCALIZATION NOTE (netmonitor.toolbar.resetColumns): This is the label
+# displayed in the network table header context menu.
+netmonitor.toolbar.resetColumns		=列表示をリセット
+
+# LOCALIZATION NOTE (netmonitor.toolbar.resetSorting): This is the label
+# displayed in the network table header context menu to reset sorting
+netmonitor.toolbar.resetSorting		=並べ替えをリセット
+
+# 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		=列の幅を内容に合わせる
+
+# 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	=ダブルクリックで列の幅を内容に合わせます
+
+# LOCALIZATION NOTE (netmonitor.toolbar.timings): This is the label
+# displayed in the network table header context menu for the timing submenu
+netmonitor.toolbar.timings		=タイミング
+
+# 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	=応答ヘッダー
+
+# 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	=ブロック
+
+# LOCALIZATION NOTE (netmonitor.headers.address): This is the label displayed
+# in the network details headers tab identifying the remote address.
+netmonitor.headers.address		=アドレス
+
+# LOCALIZATION NOTE (netmonitor.headers.status): This is the label displayed
+# in the network details headers tab identifying the status code.
+netmonitor.headers.status		=ステータス
+
+# LOCALIZATION NOTE (netmonitor.headers.size): This is the label displayed
+# in the network details headers tab identifying the size.
+netmonitor.headers.size			=サイズ
+
+# 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 サイズ)
+
+# LOCALIZATION NOTE (netmonitor.headers.version): This is the label displayed
+# in the network details headers tab identifying the http version.
+netmonitor.headers.version		=バージョン
+
+# 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		=ステータスコードの詳細
+
+# LOCALIZATION NOTE (netmonitor.headers.referrerPolicy): This is the label displayed
+# in the network details headers tab identifying the referrer policy.
+netmonitor.headers.referrerPolicy	=リファラーポリシー
+
+# LOCALIZATION NOTE (netmonitor.headers.contentBlocking): This is the label displayed
+# in the network details headers tab identifying the content blocking mode.
+netmonitor.headers.contentBlocking	=ブロッキング
+
+# 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	=編集して再送信
+
+# 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			=生ヘッダー
+
+# LOCALIZATION NOTE (netmonitor.response.name): This is the label displayed
+# in the network details response tab identifying an image's file name.
+netmonitor.response.name		=名前:
+
+# LOCALIZATION NOTE (netmonitor.response.dimensions): This is the label displayed
+# in the network details response tab identifying an image's dimensions.
+netmonitor.response.dimensions		=寸法:
+
+# LOCALIZATION NOTE (netmonitor.response.mime): This is the label displayed
+# in the network details response tab identifying an image's mime.
+netmonitor.response.mime		=MIME タイプ:
+
+# 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		=ブロック:
+
+# 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 解決:
+
+# 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 セットアップ:
+
+# 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		=接続:
+
+# 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			=送信:
+
+# 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			=待機:
+
+# 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		=受信:
+
+# 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		=タイミングの詳細
+
+# 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$S is the slow threshold.
+netmonitor.audits.slowIconTooltip	=サーバーからの応答に時間がかかっています。(%1$S) 推奨される限界値は %2$S です。
+
+# LOCALIZATION NOTE (netmonitor.security.warning.cipher): A tooltip
+# for warning icon that indicates a connection uses insecure cipher suite.
+netmonitor.security.warning.cipher	=暗号化に使用されているアルゴリズムは安全ではないため推奨されません。
+
+# LOCALIZATION NOTE (netmonitor.security.error): This is the label displayed
+# in the security tab if a security error prevented the connection.
+netmonitor.security.error		=エラー:
+
+# LOCALIZATION NOTE (netmonitor.security.protocolVersion): This is the label displayed
+# in the security tab describing TLS/SSL protocol version.
+netmonitor.security.protocolVersion	=プロトコルバージョン:
+
+# 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		=暗号アルゴリズム:
+
+# 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		=鍵共有グループ:
+
+# 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	=なし
+
+# 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	=カスタム
+
+# LOCALIZATION NOTE (netmonitor.security.keaGroup.unknown): This is the value
+# displayed in the security tab describing an unknown group.
+netmonitor.security.keaGroup.unknown	=未知のグループ
+
+# 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	=署名スキーム:
+
+# 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	=なし
+
+# LOCALIZATION NOTE (netmonitor.security.signatureScheme.unknown): This is the
+# value displayed in the security tab describing an unknown signature scheme.
+netmonitor.security.signatureScheme.unknown	=未知の署名スキーム
+
+# 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		=公開鍵のピン留め:
+
+# 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		=接続:
+
+# LOCALIZATION NOTE (netmonitor.security.certificate): This is the label displayed
+# in the security tab describing the server certificate section.
+netmonitor.security.certificate		=証明書:
+
+# 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	=この URL は既知のトラッカーに一致するため、コンテンツブロッキングが有効な場合はブロックされます。
+
+# LOCALIZATION NOTE (netmonitor.trackingResource.enhancedTrackingProtection): This is
+# the label used in the Network monitor panel for showing enhanced tracking protection.
+netmonitor.trackingResource.enhancedTrackingProtection	=強化型トラッキング防止機能
+
+# 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		=強化型トラッキング防止機能についての詳細
+
+# LOCALIZATION NOTE (netmonitor.context.copy): This is the label displayed
+# for the copy sub-menu in the context menu for a request
+netmonitor.context.copy				=コピー
+
+# LOCALIZATION NOTE (netmonitor.context.copy.accesskey): This is the access key
+# for the copy menu/sub-menu displayed in the context menu for a request
+netmonitor.context.copy.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			=URL をコピー
+
+# 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		=URL パラメーターをコピー
+
+# 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		=%S データをコピー
+
+# 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.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			=cURL としてコピー
+
+# 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			=fetch としてコピー
+
+# 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		=要求ヘッダーをコピー
+
+# 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		=応答ヘッダーをコピー
+
+# 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			=応答をコピー
+
+# 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		=画像をデータ URI としてコピー
+
+# 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			=コンソールで fetch として使用
+
+# 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			=名前を付けて画像を保存
+
+# 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			=すべてコピー
+
+# 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			=HAR 形式ですべてコピー
+
+# 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			=HAR 形式ですべて保存
+
+# 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		=HAR ファイルのインポート
+
+# LOCALIZATION NOTE (netmonitor.har.importDialogHARFilter):
+# This string is displayed as a filter for importing HAR file
+netmonitor.har.importDialogHARFilter		=HAR ファイル
+
+# LOCALIZATION NOTE (netmonitor.har.importDialogAllFilter):
+# This string is displayed as a filter for importing HAR file
+netmonitor.har.importDialogAllFilter		=すべてのファイル
+
+# 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			=再送信
+
+# 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		=編集して再送信
+
+# 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			=URL をブロック
+
+# 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			=URL のブロックを解除
+
+# 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			=新しいタブで開く
+
+# 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		=デバッガーで開く
+
+# 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		=スタイルエディターで開く
+
+# 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			=パフォーマンス解析を開始...
+
+# 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		=新しい要求
+
+# 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	=メソッド
+
+# 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			=クエリー文字列
+
+# LOCALIZATION NOTE (netmonitor.custom.headers): This is the label displayed
+# above the request headers entry in the custom request form
+netmonitor.custom.headers		=要求ヘッダー
+
+# LOCALIZATION NOTE (netmonitor.custom.postData): This is the label displayed
+# above the request body entry in the custom request form
+netmonitor.custom.postData		=要求ボディ
+
+# LOCALIZATION NOTE (netmonitor.custom.send): This is the label displayed
+# on the button which sends the custom request
+netmonitor.custom.send			=送信
+
+# LOCALIZATION NOTE (netmonitor.custom.cancel): This is the label displayed
+# on the button which cancels and closes the custom request form
+netmonitor.custom.cancel		=キャンセル
+
+# LOCALIZATION NOTE (netmonitor.backButton): This is the label displayed
+# on the button which exists the performance statistics view
+netmonitor.backButton			=戻る
+
+# 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$S (キャッシュ)
+
+# LOCALIZATION NOTE (netmonitor.status.tooltip.worker): This is the tooltip of
+# the column status code, when the request is from a service worker
+# %1$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 (キャッシュ、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		=HAR ファイルをここにドロップ
+
+# 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 のエクスポート/インポート
+
+# LOCALIZATION NOTE (netmonitor.cache.cache): This is the label text for the parent
+# node in the TreeView.
+netmonitor.cache.cache			=キャッシュ
+
+# LOCALIZATION NOTE (netmonitor.cache.empty): This is the text displayed when cache
+# information is not available.
+netmonitor.cache.empty			=キャッシュ情報はありません
+
+# LOCALIZATION NOTE (netmonitor.cache.notAvailable): This is the text displayed under
+# a node that has no information available.
+netmonitor.cache.notAvailable		=利用不可
+
+# LOCALIZATION NOTE (netmonitor.cache.dataSize): This is the label text for
+# the datasize of the cached object.
+netmonitor.cache.dataSize		=サイズ
+
+# LOCALIZATION NOTE (netmonitor.cache.expires): This is the label text for the
+# expires time of the cached object.
+netmonitor.cache.expires		=期限日時
+
+# LOCALIZATION NOTE (netmonitor.cache.fetchCount): This is the label text for the
+# fetch count of the cached object.
+netmonitor.cache.fetchCount		=取得回数
+
+# LOCALIZATION NOTE (netmonitor.cache.lastFetched): This is the label text for the
+# last fetched date/time of the cached object.
+netmonitor.cache.lastFetched		=最終取得日時
+
+# LOCALIZATION NOTE (netmonitor.cache.lastModified): This is the label text for the
+# last modified date/time of the cached object.
+netmonitor.cache.lastModified		=最終更新日時
+
+# 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			=取得元デバイス
+
+# LOCALIZATION NOTE (netmonitor.settings.menuTooltip): This is the tooltip that gets displayed
+# when the settings menu button is hovered.
+netmonitor.settings.menuTooltip		=ネットワーク設定
+
+# LOCALIZATION NOTE (netmonitor.settings.importHarTooltip): This is the tooltip that gets displayed
+# when the HAR import menu item is hovered
+netmonitor.settings.importHarTooltip	=ネットワーク情報の HAR ファイルをインポートします
+
+# LOCALIZATION NOTE (netmonitor.settings.saveHarTooltip): This is the tooltip that gets displayed
+# when the HAR save menu item is hovered
+netmonitor.settings.saveHarTooltip	=ネットワーク情報を HAR ファイルに保存します
+
+# LOCALIZATION NOTE (netmonitor.settings.copyHarTooltip): This is the tooltip that gets displayed
+# when the HAR copy menu item is hovered
+netmonitor.settings.copyHarTooltip	=ネットワーク情報をクリップボードにコピーします
+
+# LOCALIZATION NOTE (netmonitor.errorpanel.description): This is the information displayed once the monitor errors out
+netmonitor.errorpanel.description	=ネットワークパネルがクラッシュしました。
+
+# LOCALIZATION NOTE (netmonitor.errorpanel.fileBugButton): This is the text that appears in the button to visit the bug filing link.
+netmonitor.errorpanel.fileBugButton	=バグ報告を送信
+
+# LOCALIZATION NOTE (netmonitor.errorpanel.reloadPanelInfo): This is the text that appears after Network panel errors to instruct the user to reload the panel.
+netmonitor.errorpanel.reloadPanelInfo	=ツールボックスを閉じて開きなおし、このエラーを消去します。
diff --git a/l10n-ja/devtools/client/network-throttling.properties b/l10n-ja/devtools/client/network-throttling.properties
new file mode 100644
index 0000000000..a7ed8b5273
--- /dev/null
+++ b/l10n-ja/devtools/client/network-throttling.properties
@@ -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/.
+
+# 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=帯域制限なし
diff --git a/l10n-ja/devtools/client/performance.dtd b/l10n-ja/devtools/client/performance.dtd
new file mode 100644
index 0000000000..b62d072dc6
--- /dev/null
+++ b/l10n-ja/devtools/client/performance.dtd
@@ -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 NOTE : FILE This file contains the Performance strings -->
+<!-- LOCALIZATION NOTE : FILE Do not translate commandkey -->
+
+<!-- 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 (performanceUI.bufferStatusTooltip): This string
+  -  is displayed as the tooltip for the buffer capacity during a recording. -->
+<!ENTITY performanceUI.bufferStatusTooltip "プロファイラはサンプルを環状バッファに保存します。記録容量の限界に達した場合、新しいサンプルはバッファの開始地点から上書きしていきます。">
+
+<!-- LOCALIZATION NOTE (performanceUI.disabledRealTime.disabledE10S): This string
+  -  is displayed as a message for why the real time overview graph is disabled
+  -  when running on a build that can run multiprocess Firefox, but just is not enabled. -->
+<!ENTITY performanceUI.disabledRealTime.disabledE10S "記録データのリアルタイム表示を有効にするには、設定でマルチプロセス Firefox を有効にしてください。">
+
+<!-- LOCALIZATION NOTE (performanceUI.bufferStatusFull): This string
+  -  is displayed when the profiler's circular buffer has started to overlap. -->
+<!ENTITY performanceUI.bufferStatusFull "バッファ容量が限界に達したため、古いサンプルが上書されます。">
+
+<!-- LOCALIZATION NOTE (performanceUI.unavailableNoticePB): This is the label shown
+  -  in the details view while the profiler is unavailable, for example, while
+  -  in Private Browsing mode. -->
+<!ENTITY performanceUI.unavailableNoticePB "プロファイルの記録は現在利用できません。プライベートウィンドウをすべて閉じてから試してください。">
+
+<!-- LOCALIZATION NOTE (performanceUI.loadingNotice): This is the label shown
+  -  in the details view while loading a profile. -->
+<!ENTITY performanceUI.loadingNotice "読み込み中...">
+
+<!-- LOCALIZATION NOTE (performanceUI.toolbar.*): These strings are displayed
+  -  in the toolbar on buttons that select which view is currently shown. -->
+<!ENTITY performanceUI.toolbar.waterfall		"タイムライン">
+<!ENTITY performanceUI.toolbar.waterfall.tooltiptext	"パフォーマンス情報の記録以外の動作を、連続したタイムラインとして表示します。">
+<!ENTITY performanceUI.toolbar.js-calltree		"呼び出しツリー">
+<!ENTITY performanceUI.toolbar.js-calltree.tooltiptext	"パフォーマンス情報の記録中にもっとも長時間動作していた JavaScript の関数をハイライトします。">
+<!ENTITY performanceUI.toolbar.memory-calltree		"メモリー割り当て">
+<!ENTITY performanceUI.toolbar.allocations.tooltiptext	"パフォーマンス情報の記録中に割り当てられたメモリーを表示します。">
+<!ENTITY performanceUI.toolbar.js-flamegraph		"JS フレームチャート">
+<!ENTITY performanceUI.toolbar.js-flamegraph.tooltiptext	"パフォーマンス情報の記録時の JavaScript コールスタックを表示します。">
+<!ENTITY performanceUI.toolbar.memory-flamegraph	"メモリー割り当てフレームチャート">
+
+<!-- LOCALIZATION NOTE (performanceUI.table.*): These strings are displayed
+  -  in the call tree headers for a recording. -->
+<!ENTITY performanceUI.table.totalDuration            "合計時間">
+<!ENTITY performanceUI.table.totalDuration.tooltip    "この関数と呼び出した関数の実行にかかった時間です。">
+<!ENTITY performanceUI.table.selfDuration             "時間">
+<!ENTITY performanceUI.table.selfDuration.tooltip     "この関数の実行にかかった時間です。">
+<!ENTITY performanceUI.table.totalPercentage          "合計コスト">
+<!ENTITY performanceUI.table.totalPercentage.tooltip  "この関数と呼び出した関数の実行にかかった時間の割合です。">
+<!ENTITY performanceUI.table.selfPercentage           "コスト">
+<!ENTITY performanceUI.table.selfPercentage.tooltip   "この関数の実行にかかった時間の割合です。">
+<!ENTITY performanceUI.table.samples                  "サンプル">
+<!ENTITY performanceUI.table.samples.tooltip          "プロファイラがサンプルを採取したときに、この関数がスタック上に現れた回数です。">
+<!ENTITY performanceUI.table.function                 "関数">
+<!ENTITY performanceUI.table.function.tooltip         "サンプル採取された関数の名前とソース上の場所です。">
+<!ENTITY performanceUI.table.totalAlloc               "割り当てサンプル合計">
+<!ENTITY performanceUI.table.totalAlloc.tooltip       "この場所と呼び出し先で割り当てられたオブジェクトの合計サンプル数です。">
+
+<!-- LOCALIZATION NOTE (performanceUI.options.filter.tooltiptext): This string
+  -  is displayed next to the filter button-->
+<!ENTITY performanceUI.options.filter.tooltiptext "タイムラインに表示するデータを選択します">
+
+<!-- LOCALIZATION NOTE (performanceUI.options.gear.tooltiptext): This is the
+  -  tooltip for the options button. -->
+<!ENTITY performanceUI.options.gear.tooltiptext "プロファイラの設定を行います。">
+
+<!-- LOCALIZATION NOTE (performanceUI.invertTree): This is the label shown next to
+  -  a checkbox that inverts and un-inverts the profiler's call tree. -->
+<!ENTITY performanceUI.invertTree             "呼び出しツリーを反転">
+<!ENTITY performanceUI.invertTree.tooltiptext "呼び出しツリーを反転すると、プロファイルされた呼び出し経路を新しい順に、展開した状態で表示します。">
+
+<!-- LOCALIZATION NOTE (performanceUI.invertFlameGraph): This is the label shown next to
+  -  a checkbox that inverts and un-inverts the profiler's flame graph. -->
+<!ENTITY performanceUI.invertFlameGraph             "フレームチャートを反転">
+<!ENTITY performanceUI.invertFlameGraph.tooltiptext "フレームチャートを反転すると、プロファイルされた呼び出し経路を新しい順に、展開した状態で表示します。">
+
+<!-- LOCALIZATION NOTE (performanceUI.showPlatformData): This is the
+  -  label for the checkbox that toggles whether or not Gecko platform data
+  -  is displayed in the profiler. -->
+<!ENTITY performanceUI.showPlatformData             "Gecko プラットフォームのデータを表示">
+<!ENTITY performanceUI.showPlatformData.tooltiptext "このオプションを有効にすると、JavaScript プロファイラの出力に Gecko プラットフォームのシンボルが含まれるようになります。">
+
+<!-- LOCALIZATION NOTE (performanceUI.showJITOptimizations): This string
+  -  is displayed next to a checkbox determining whether or not JIT optimization data
+  -  should be displayed. -->
+<!ENTITY performanceUI.showJITOptimizations             "JIT 最適化を表示">
+<!ENTITY performanceUI.showJITOptimizations.tooltiptext "JavaScript の各フレームに収集された、JIT 最適化データを表示します。">
+
+<!-- LOCALIZATION NOTE (performanceUI.flattenTreeRecursion): This is the
+  -  label for the checkbox that toggles the flattening of tree recursion in inspected
+  -  functions in the profiler. -->
+<!ENTITY performanceUI.flattenTreeRecursion             "呼び出しツリーを均す">
+<!ENTITY performanceUI.flattenTreeRecursion.tooltiptext "このオプションを有効にすると、関数インスペクト時の呼び出しツリーの表示を平らにします。">
+
+<!-- LOCALIZATION NOTE (performanceUI.enableMemory): This string
+  -  is displayed next to a checkbox determining whether or not memory
+  -  measurements are enabled. -->
+<!ENTITY performanceUI.enableMemory             "メモリー消費を記録">
+<!ENTITY performanceUI.enableMemory.tooltiptext "このオプションを有効にすると、プロファイル時のメモリー消費を記録します。">
+
+<!-- LOCALIZATION NOTE (performanceUI.enableAllocations): This string
+  -  is displayed next to a checkbox determining whether or not allocation
+  -  measurements are enabled. -->
+<!ENTITY performanceUI.enableAllocations             "メモリー割り当てを記録">
+<!ENTITY performanceUI.enableAllocations.tooltiptext "このオプションを有効にすると、プロファイル時のメモリー割り当てを記録します。">
+
+<!-- LOCALIZATION NOTE (performanceUI.enableFramerate): This string
+  -  is displayed next to a checkbox determining whether or not framerate
+  -  is recorded. -->
+<!ENTITY performanceUI.enableFramerate             "フレームレートを記録">
+<!ENTITY performanceUI.enableFramerate.tooltiptext "このオプションを有効にすると、プロファイル時のフレームレートを記録します。">
+
+<!-- LOCALIZATION NOTE (performanceUI.console.recordingNoticeStart/recordingNoticeEnd):
+  -  This string is displayed when a recording is selected that started via console.profile.
+  -  Wraps the command used to start, like "Currently recording via console.profile("label")" -->
+<!ENTITY performanceUI.console.recordingNoticeStart "">
+<!ENTITY performanceUI.console.recordingNoticeEnd   "で記録中です。">
+
+<!-- LOCALIZATION NOTE (performanceUI.console.stopCommandStart/stopCommandEnd):
+  -  This string is displayed when a recording is selected that started via console.profile.
+  -  Indicates how to stop the recording, wrapping the command, like
+  -  "Stop recording by entering console.profileEnd("label") into the console." -->
+<!ENTITY performanceUI.console.stopCommandStart "コンソールからの">
+<!ENTITY performanceUI.console.stopCommandEnd   "の入力により記録終了しました。">
diff --git a/l10n-ja/devtools/client/performance.properties b/l10n-ja/devtools/client/performance.properties
new file mode 100644
index 0000000000..06e6bef569
--- /dev/null
+++ b/l10n-ja/devtools/client/performance.properties
@@ -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/.
+
+# LOCALIZATION NOTE These strings are used inside the Performance Tools
+# which is available from the Web Developer sub-menu -> 'Performance'.
+# 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 (noRecordingsText): The text to display in the
+# recordings menu when there are no recorded profiles yet.
+noRecordingsText			=プロファイルはまだありません。
+
+# LOCALIZATION NOTE (recordingsList.itemLabel):
+# This string is displayed in the recordings list of the Performance Tools,
+# identifying a set of function calls. %S represents the number of recording,
+# iterating for every new recording, resulting in "Recording #1", "Recording #2", etc.
+recordingsList.itemLabel		=記録 #%S
+
+# LOCALIZATION NOTE (recordingsList.recordingLabel):
+# This string is displayed in the recordings list of the Performance Tools,
+# for an item that has not finished recording.
+recordingsList.recordingLabel		=記録中...
+
+# LOCALIZATION NOTE (recordingsList.loadingLabel):
+# This string is displayed in the recordings list of the Performance Tools,
+# for an item that is finished and is loading.
+recordingsList.loadingLabel		=読み込み中...
+
+# LOCALIZATION NOTE (recordingsList.durationLabel):
+# This string is displayed in the recordings list of the Performance Tools,
+# for an item that has finished recording.
+recordingsList.durationLabel		=%S ms
+
+# LOCALIZATION NOTE (recordingsList.saveLabel):
+# This string is displayed in the recordings list of the Performance Tools,
+# for saving an item to disk.
+recordingsList.saveLabel		=保存
+
+# LOCALIZATION NOTE (graphs.fps):
+# This string is displayed in the framerate graph of the Performance Tools,
+# as the unit used to measure frames per second. This label should be kept
+# AS SHORT AS POSSIBLE so it doesn't obstruct important parts of the graph.
+graphs.fps				=fps
+
+# LOCALIZATION NOTE (graphs.ms):
+# This string is displayed in the flamegraph of the Performance Tools,
+# as the unit used to measure time (in milliseconds). This label should be kept
+# AS SHORT AS POSSIBLE so it doesn't obstruct important parts of the graph.
+graphs.ms				=ms
+
+# LOCALIZATION NOTE (graphs.memory):
+# This string is displayed in the memory graph of the Performance tool,
+# as the unit used to memory consumption. This label should be kept
+# AS SHORT AS POSSIBLE so it doesn't obstruct important parts of the graph.
+graphs.memory				=MB
+
+# LOCALIZATION NOTE (category.*):
+# These strings are displayed in the categories graph of the Performance Tools,
+# as the legend for each block in every bar. These labels should be kept
+# AS SHORT AS POSSIBLE so they don't obstruct important parts of the graph.
+category.other				=Gecko
+category.layout				=レイアウト
+category.js				=JIT
+category.gc				=GC
+category.network			=ネットワーク
+category.graphics			=グラフィック
+category.dom				=DOM
+category.idle				=アイドル
+category.tools				=ツール
+
+# LOCALIZATION NOTE (table.bytes):
+# This string is displayed in the call tree after bytesize units.
+# %S represents the value in bytes.
+table.bytes				=%S バイト
+
+# LOCALIZATION NOTE (table.ms2):
+# This string is displayed in the call tree after units of time in milliseconds.
+# %S represents the value in milliseconds.
+table.ms2				=%S ms
+
+# LOCALIZATION NOTE (table.percentage3):
+# This string is displayed in the call tree after units representing percentages.
+# %S represents the value in percentage with two decimal points, localized.
+# there are two "%" after %S to escape and display "%"
+table.percentage3			=%S%%
+
+# LOCALIZATION NOTE (table.root):
+# This string is displayed in the call tree for the root node.
+table.root				=(ルート)
+
+# LOCALIZATION NOTE (table.idle):
+# This string is displayed in the call tree for the idle blocks.
+table.idle				=(待機)
+
+# LOCALIZATION NOTE (table.url.tooltiptext):
+# This string is displayed in the call tree as the tooltip text for the url
+# labels which, when clicked, jump to the debugger.
+table.url.tooltiptext			=デバッガーでソースを表示
+
+# LOCALIZATION NOTE (table.view-optimizations.tooltiptext2):
+# This string is displayed in the icon displayed next to frames that
+# have optimization data
+table.view-optimizations.tooltiptext2	=JIT 最適化データがフレームに含まれます
+
+# LOCALIZATION NOTE (recordingsList.importDialogTitle):
+# This string is displayed as a title for importing a recoring from disk.
+recordingsList.importDialogTitle	=記録をインポート...
+
+# LOCALIZATION NOTE (recordingsList.saveDialogTitle):
+# This string is displayed as a title for saving a recording to disk.
+recordingsList.saveDialogTitle		=記録を保存...
+
+# LOCALIZATION NOTE (recordingsList.saveDialogJSONFilter):
+# This string is displayed as a filter for saving a recording to disk.
+recordingsList.saveDialogJSONFilter	=JSON ファイル
+
+# LOCALIZATION NOTE (recordingsList.saveDialogAllFilter):
+# This string is displayed as a filter for saving a recording to disk.
+recordingsList.saveDialogAllFilter	=すべてのファイル
+
+# LOCALIZATION NOTE (timeline.tick):
+# This string is displayed in the timeline overview, for delimiting ticks
+# by time, in milliseconds.
+timeline.tick				=%S ms
+
+# LOCALIZATION NOTE (timeline.records):
+# This string is displayed in the timeline waterfall, as a title for the menu.
+timeline.records			=記録
+
+# LOCALIZATION NOTE (profiler.bufferFull):
+# This string is displayed when recording, indicating how much of the
+# buffer is currently be used.
+# %S is the percentage of the buffer used -- there are two "%"s after to escape
+# the % that is actually displayed.
+# Example: "Buffer 54% full"
+profiler.bufferFull			=バッファ使用量 %S%%
+
+# LOCALIZATION NOTE (recordings.start):
+# The label shown on the main recording buttons to start recording.
+recordings.start			=パフォーマンスの記録を開始
+
+# LOCALIZATION NOTE (recordings.stop):
+# The label shown on the main recording buttons to stop recording.
+recordings.stop				=パフォーマンスの記録を停止
+
+# LOCALIZATION NOTE (recordings.start.tooltip):
+# This string is displayed as a tooltip on a button that starts a new profile.
+recordings.start.tooltip		=パフォーマンス記録の状態を切り替えます。
+
+# LOCALIZATION NOTE (recordings.import.tooltip):
+# This string is displayed on a button that opens a dialog to import a saved profile data file.
+recordings.import.tooltip		=インポート...
+
+# LOCALIZATION NOTE (recordings.clear.tooltip):
+# This string is displayed on a button that removes all the recordings.
+recordings.clear.tooltip		=消去
diff --git a/l10n-ja/devtools/client/perftools.ftl b/l10n-ja/devtools/client/perftools.ftl
new file mode 100644
index 0000000000..218da8d95c
--- /dev/null
+++ b/l10n-ja/devtools/client/perftools.ftl
@@ -0,0 +1,103 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. 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 = プロファイラーの設定
+perftools-intro-description =
+  記録したデータは新しいタブの profiler.firefox.com で開きます。データはすべてローカルに保存されますが、アップロードして共有することもできます。
+
+## All of the headings for the various sections.
+
+perftools-heading-settings = すべての設定
+perftools-heading-buffer = バッファー設定
+perftools-heading-features = 機能
+perftools-heading-features-default = 機能 (既定で推奨)
+perftools-heading-features-disabled = 無効な機能
+perftools-heading-features-experimental = 実験的な機能
+perftools-heading-threads = スレッド
+perftools-heading-local-build = ローカルビルド
+
+##
+
+perftools-description-intro =
+  記録したデータは新しいタブの <a>profiler.firefox.com</a> で開きます。データはすべてローカルに保存されますが、アップロードして共有することもできます。
+perftools-description-local-build =
+  この端末で自身でビルドしたバイナリをプロファイリングする場合は、シンボル情報を利用可能にしてビルドした objdir を以下のリストに追加してください。
+
+## The controls for the interval at which the profiler samples the code.
+
+perftools-range-interval-label = サンプリング間隔:
+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 = バッファーサイズ:
+
+perftools-custom-threads-label = 名前でカスタムスレッドを追加:
+
+perftools-devtools-interval-label = 間隔:
+perftools-devtools-threads-label = スレッド:
+perftools-devtools-settings-label = 設定
+
+## Various statuses that affect the current state of profiling, not typically displayed.
+
+perftools-status-private-browsing-notice =
+  プライベートブラウジングが有効なときは、プロファイラーは無効になります。プライベートウィンドウをすべて閉じてから、再度プロファイラーを有効にしてください。
+perftools-status-recording-stopped-by-another-tool = 他のツールによって記録が停止されました。
+perftools-status-restart-required = この機能を有効にするには、ブラウザーを再起動する必要があります。
+
+## These are shown briefly when the user is waiting for the profiler to respond.
+
+perftools-request-to-stop-profiler = 記録を停止中
+perftools-request-to-get-profile-and-stop-profiler = プロファイルをキャプチャ中
+
+##
+
+perftools-button-start-recording = 記録を開始
+perftools-button-capture-recording = 記録をキャプチャ
+perftools-button-cancel-recording = 記録をキャンセル
+perftools-button-save-settings = 設定を保存して戻る
+perftools-button-restart = 再開
+perftools-button-add-directory = ディレクトリーを追加
+perftools-button-remove-directory = 選択したディレクトリーを削除
+perftools-button-edit-settings = 設定を編集...
+
+## These messages are descriptions of the threads that can be enabled for the profiler.
+
+perftools-thread-gecko-main =
+  .title = コンテンツプロセスと親プロセス両方のメインプロセスです
+perftools-thread-compositor =
+  .title = ページ上の異なる描画要素を合成します
+perftools-thread-dom-worker =
+  .title = これは Web Worker と Service Worker の両方を扱います
+perftools-thread-renderer =
+  .title = WebRender が有効なときに OpenGL 呼び出しを実行するスレッドです
+perftools-thread-render-backend =
+  .title = WebRender の RenderBackend スレッドです
+perftools-thread-paint-worker =
+  .title = メインスレッド外描画が有効なときに描画処理が発生するスレッドです
+perftools-thread-style-thread =
+  .title = 複数に分割されるスタイル計算のスレッドです
+pref-thread-stream-trans =
+  .title = ネットワークストリーム転送です
+perftools-thread-socket-thread =
+  .title = ソケット呼び出しをブロックするネットワークコードが実行されるスレッドです
+perftools-thread-img-decoder =
+  .title = 画像デコードスレッドです
+perftools-thread-dns-resolver =
+  .title = DNS の名前解決が行われるスレッドです
+perftools-thread-js-helper =
+  .title = メインスレッド外コンパイルなど、JS エンジンのバックエンド処理のスレッドです
+
+##
+
+perftools-record-all-registered-threads =
+  上記で選択したスレッドを優先しつつ、登録済みスレッドをすべて記録する
+
+perftools-tools-threads-input-label =
+  .title = プロファイリングを有効にするスレッド名をコンマ区切りのリストで入力します。名前はスレッド名が含まれる部分一致である必要があります。空白を区別します。
diff --git a/l10n-ja/devtools/client/responsive.properties b/l10n-ja/devtools/client/responsive.properties
new file mode 100644
index 0000000000..805698071c
--- /dev/null
+++ b/l10n-ja/devtools/client/responsive.properties
@@ -0,0 +1,173 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. 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 (responsive.editDeviceList2): Context menu item displayed in the
+# device selector.
+responsive.editDeviceList2	=リストを編集...
+
+# LOCALIZATION NOTE (responsive.exit): Tooltip text of the exit button.
+responsive.exit			=レスポンシブデザインモードを終了します
+
+# LOCALIZATION NOTE (responsive.rotate): Tooltip text of the rotate button.
+responsive.rotate		=ビューポートを回転
+
+# LOCALIZATION NOTE (responsive.responsiveMode): Placeholder text for the
+# device selector.
+responsive.responsiveMode	=レスポンシブ
+
+# LOCALIZATION NOTE (responsive.enableTouch): Tooltip text for the touch
+# simulation button when it's disabled.
+responsive.enableTouch		=タッチシミュレーションを有効にします
+
+# LOCALIZATION NOTE (responsive.disableTouch): Tooltip text for the touch
+# simulation button when it's enabled.
+responsive.disableTouch		=タッチシミュレーションを無効にします
+
+# LOCALIZATION NOTE  (responsive.screenshot): Tooltip of the screenshot button.
+responsive.screenshot		=ビューポートのスクリーンショットを撮影します
+
+# 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		=レスポンシブデザインモードは、マルチプロセス Firefox のウェブコンテンツで使用されるタブなど、リモートのブラウザータブにしか利用できません。
+
+# LOCALIZATION NOTE (responsive.changeDevicePixelRatio): Tooltip for the
+# device pixel ratio dropdown when is enabled.
+responsive.changeDevicePixelRatio	=ビューポートの端末ピクセル比を変更します
+
+# LOCALIZATION NOTE (responsive.devicePixelRatio.auto): Tooltip for the device pixel ratio
+# dropdown when it is disabled because a device is selected.
+# The argument (%1$S) is the selected device (e.g. iPhone 6) that set
+# automatically the device pixel ratio value.
+responsive.devicePixelRatio.auto	=端末ピクセル比は %1$S が自動的に設定します
+
+# 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		=カスタム端末
+
+# 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 (カスタム)
+
+# LOCALIZATION NOTE (responsive.addDevice2): Button text that reveals a form to
+# be used for adding custom devices.
+responsive.addDevice2			=カスタム端末を追加...
+
+# LOCALIZATION NOTE (responsive.deviceAdderName): Label of form field for the
+# name of a new device.
+responsive.deviceAdderName		=端末名
+
+# LOCALIZATION NOTE (responsive.deviceAdderSize): Label of form field for the
+# size of a new device.
+responsive.deviceAdderSize		=サイズ
+
+# LOCALIZATION NOTE (responsive.deviceAdderPixelRatio2): Label of form field for
+# the device pixel ratio of a new device.
+responsive.deviceAdderPixelRatio2	=端末ピクセル比
+
+# LOCALIZATION NOTE (responsive.deviceAdderUserAgent2): Label of form field for
+# the user agent of a new device.
+responsive.deviceAdderUserAgent2	=ユーザーエージェント文字列
+
+# LOCALIZATION NOTE (responsive.deviceAdderTouch2): Label of form field for the
+# touch input support of a new device.
+responsive.deviceAdderTouch2		=タッチスクリーン
+
+# LOCALIZATION NOTE (responsive.deviceAdderSave): Button text that submits a
+# form to add a new device.
+responsive.deviceAdderSave		=保存
+
+# LOCALIZATION NOTE (responsive.deviceAdderCancel): Button text that cancels a
+# form to add a new device.
+responsive.deviceAdderCancel		=キャンセル
+
+# 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$S is a boolean value
+# noting whether touch input is supported.
+responsive.deviceDetails		=サイズ: %1$S x %2$S\nDPR: %3$S\nUA: %4$S\nタッチ: %5$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	=%2$S 上の %1$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		=サイズ: %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$S: touch
+responsive.deviceDetails.touch		=タッチ: %1$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	=タッチシミュレーションが変更されたときに再読み込み
+
+# LOCALIZATION NOTE (responsive.reloadConditions.userAgent): Label on checkbox used
+# to select whether to reload when user agent is changed.
+responsive.reloadConditions.userAgent		=ユーザーエージェントが変更されたときに再読み込み
+
+# 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	=端末シミュレーションの変更を反映するには再読み込みが必要です。開発ツールでの変更内容が失われないよう、自動再読み込みは既定の設定で無効になっています。設定メニューで再読み込みを有効にできます。
+
+# LOCALIZATION NOTE (responsive.leftAlignViewport): Label on checkbox used in the settings
+# menu.
+responsive.leftAlignViewport			=左寄せビューポート
+
+# LOCALIZATION NOTE (responsive.customUserAgent): This is the placeholder for the user
+# agent input in the responsive design mode toolbar.
+responsive.customUserAgent			=カスタムユーザーエージェント
+
+responsive.showUserAgentInput			=ユーザーエージェントを表示
+
+# LOCALIZATION NOTE (responsive.deviceSettings): The header text for the device settings
+# view.
+responsive.deviceSettings			=端末設定
+
+# LOCALIZATION NOTE (responsive.deviceNameAlreadyInUse): This is the text shown when adding a new
+# device with an already existing device name.
+responsive.deviceNameAlreadyInUse		=端末名が重複しています
+
+# LOCALIZATION NOTE (responsive.deviceFormUpdate): Button text that updates a custom
+# device when the form is submitted.
+responsive.deviceFormUpdate			=更新
diff --git a/l10n-ja/devtools/client/shared.properties b/l10n-ja/devtools/client/shared.properties
new file mode 100644
index 0000000000..c8e318c300
--- /dev/null
+++ b/l10n-ja/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		=サイズ: 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		=寸法: 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-ja/devtools/client/sourceeditor.dtd b/l10n-ja/devtools/client/sourceeditor.dtd
new file mode 100644
index 0000000000..386551b5ab
--- /dev/null
+++ b/l10n-ja/devtools/client/sourceeditor.dtd
@@ -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/. -->
+
+<!-- LOCALIZATION NOTE : FILE This file contains the Source Editor component
+  - strings. The source editor component is used within the Style Editor. -->
+
+<!-- LOCALIZATION NOTE : FILE Do not translate commandkeys -->
+
+<!-- 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. -->
+
+<!ENTITY gotoLineCmd.label		"指定行へ移動...">
+<!ENTITY gotoLineCmd.key		"J">
+<!ENTITY gotoLineCmd.accesskey		"J">
diff --git a/l10n-ja/devtools/client/sourceeditor.properties b/l10n-ja/devtools/client/sourceeditor.properties
new file mode 100644
index 0000000000..f5f386bc00
--- /dev/null
+++ b/l10n-ja/devtools/client/sourceeditor.properties
@@ -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/.
+
+# 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		=検索:
+
+# 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		=指定行へ移動...
+
+# LOCALIZATION NOTE  (autocompletion.docsLink): This is the text shown on
+# the link inside of the documentation popup, used in the source editor.
+autocompletion.docsLink		=ドキュメント
+
+# 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		=見つかりません
+
+# 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.
+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
+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-ja/devtools/client/startup.properties b/l10n-ja/devtools/client/startup.properties
new file mode 100644
index 0000000000..e0abb186e4
--- /dev/null
+++ b/l10n-ja/devtools/client/startup.properties
@@ -0,0 +1,252 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. 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		=開発ツールのオプション
+
+# LOCALIZATION NOTE (options.label): This is used as the label of the tab in
+# the devtools window.
+options.label			=オプション
+
+# LOCALIZATION NOTE (options.panelLabel): This is used as the label for the
+# toolbox panel.
+options.panelLabel		=開発ツールのオプションパネル
+
+# 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		=パフォーマンス
+
+# LOCALIZATION NOTE (performance.panelLabel):
+# This is used as the label for the toolbox panel.
+performance.panelLabel		=パフォーマンスパネル
+
+# 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		=パフォーマンス (%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		=ウェブコンソール
+
+# LOCALIZATION NOTE (ToolboxTabWebconsole.label): the string displayed as the
+# label of the tab in the devtools window.
+ToolboxTabWebconsole.label	=コンソール
+
+# LOCALIZATION NOTE (ToolboxWebConsole.panelLabel): the string used as the
+# label for the toolbox panel.
+ToolboxWebConsole.panelLabel	=コンソールパネル
+
+# 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	=ウェブコンソール (%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		=デバッガー
+
+# LOCALIZATION NOTE (ToolboxDebugger.panelLabel):
+# This is used as the label for the toolbox panel.
+ToolboxDebugger.panelLabel	=デバッガーパネル
+
+# 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 デバッガー (%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	=スタイルエディター
+
+# LOCALIZATION NOTE (ToolboxStyleEditor.panelLabel):
+# This is used as the label for the toolbox panel.
+ToolboxStyleEditor.panelLabel	=スタイルエディターパネル
+
+# 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	=スタイルシートエディター (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			=インスペクター
+inspector.accesskey		=I
+
+# LOCALIZATION NOTE (inspector.panelLabel)
+# Labels applied to the panel and views within the panel in the toolbox
+inspector.panelLabel		=インスペクターパネル
+
+# LOCALIZATION NOTE (inspector.tooltip2)
+# Keyboard shortcut for DOM and Style Inspector will be shown inside brackets.
+inspector.tooltip2		=DOM とスタイルシートの調査 (%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 とスタイルシートの調査 (%1$S または %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		=ネットワーク
+
+# LOCALIZATION NOTE (netmonitor.panelLabel):
+# This is used as the label for the toolbox panel.
+netmonitor.panelLabel		=ネットワークパネル
+
+# 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		=ネットワークモニター (%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			=ストレージ
+
+# 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		=ストレージインスペクター
+
+# 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		=ストレージパネル
+
+# 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		=ストレージインスペクター (Cookie、ローカルストレージ ...) (%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			=メモリー
+
+# LOCALIZATION NOTE (memory.panelLabel): This is used as the label for the
+# toolbox panel.
+memory.panelLabel		=メモリーパネル
+
+# 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			=メモリー
+
+# 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 パネル
+
+# 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		=アクセシビリティ
+
+# LOCALIZATION NOTE (accessibility.panelLabel):
+# This is used as the label for the toolbox panel.
+accessibility.panelLabel	=アクセシビリティパネル
+
+# 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		=アクセシビリティ (%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		=アプリケーション
+
+# LOCALIZATION NOTE (application.panelLabel):
+# This is used as the label for the toolbox panel.
+application.panelLabel		=アプリケーションパネル
+
+# 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		=アプリケーションパネル
+
+# 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	=レスポンシブデザインモード (%S)
+
+# LOCALIZATION NOTE (toolbox.buttons.paintflashing):
+# This is the tooltip of the paintflashing button in the toolbox toolbar
+# that toggles paintflashing.
+toolbox.buttons.paintflashing	=描画域のフラッシュ切り替え
+
+# 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	=ページ全体のスクリーンショット撮影
+
+# 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		=ページに目盛りを表示
+
+# LOCALIZATION NOTE (toolbox.buttons.measure):
+# This is the tooltip of the button in the toolbox toolbar that toggles the
+# measuring tools
+toolbox.buttons.measure		=ページの部分サイズを計測
diff --git a/l10n-ja/devtools/client/storage.dtd b/l10n-ja/devtools/client/storage.dtd
new file mode 100644
index 0000000000..0719b59730
--- /dev/null
+++ b/l10n-ja/devtools/client/storage.dtd
@@ -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/. -->
+
+<!-- LOCALIZATION NOTE : This file contains the Storage Inspector strings. -->
+
+<!-- LOCALIZATION NOTE : Placeholder for the searchbox that allows you to filter the table items. -->
+<!ENTITY searchBox.placeholder			"項目を絞り込み">
+
+<!-- LOCALIZATION NOTE : Label of popup menu action to delete all storage items. -->
+<!ENTITY storage.popupMenu.deleteAllLabel	"すべて削除">
+
+<!-- LOCALIZATION NOTE : Label of popup menu action to delete all session cookies. -->
+<!ENTITY storage.popupMenu.deleteAllSessionCookiesLabel	"すべてのセッション Cookie を削除">
+
+<!-- LOCALIZATION NOTE : Label of popup menu action to copy a storage item. -->
+<!ENTITY storage.popupMenu.copyLabel		"コピー">
diff --git a/l10n-ja/devtools/client/storage.ftl b/l10n-ja/devtools/client/storage.ftl
new file mode 100644
index 0000000000..0462ca9d4f
--- /dev/null
+++ b/l10n-ja/devtools/client/storage.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/.
+
+### These strings are used inside the Storage Inspector.
+
+# Hint shown when the selected storage host does not contain any data
+storage-table-empty-text = 選択されたホストには表示できるデータがありません
+
+# 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 = ホストを選択すると Cookie の表示と編集が可能です。<a data-l10n-name="learn-more-link">詳細</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 = ホストを選択するとローカルストレージの表示と編集が可能です。<a data-l10n-name="learn-more-link">詳細</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 = ホストを選択するとセッションストレージの表示と編集が可能です。<a data-l10n-name="learn-more-link">詳細</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 = ホストを選択すると Indexed DB のエントリーの表示と削除が可能です。<a data-l10n-name="learn-more-link">詳細</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 = ホストを選択するとキャッシュストレージのエントリーの表示と削除が可能です。<a data-l10n-name="learn-more-link">詳細</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 = ホストを選択すると拡張機能ストレージの表示と編集が可能です。<a data-l10n-name="learn-more-link">詳細</a>
diff --git a/l10n-ja/devtools/client/storage.properties b/l10n-ja/devtools/client/storage.properties
new file mode 100644
index 0000000000..145bf87231
--- /dev/null
+++ b/l10n-ja/devtools/client/storage.properties
@@ -0,0 +1,102 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. 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 Storage Editor 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 (storage.filter.key):
+# Key shortcut used to focus the filter box on top of the data view
+storage.filter.key			=CmdOrCtrl+F
+
+# LOCALIZATION NOTE (tree.labels.*):
+# These strings are the labels for Storage type groups present in the Storage
+# Tree, like cookies, local storage etc.
+tree.labels.cookies			=Cookie
+tree.labels.localStorage		=ローカルストレージ
+tree.labels.sessionStorage		=セッションストレージ
+tree.labels.indexedDB			=Indexed DB
+tree.labels.Cache			=キャッシュストレージ
+tree.labels.extensionStorage		=拡張機能ストレージ
+
+# LOCALIZATION NOTE (table.headers.*.*):
+# These strings are the header names of the columns in the Storage Table for
+# each type of storage available through the Storage Tree to the side.
+table.headers.cookies.name		=名前
+table.headers.cookies.value		=値
+table.headers.cookies.expires2		=有効期限
+table.headers.cookies.size		=サイズ
+table.headers.cookies.lastAccessed2	=アクセス日時
+table.headers.cookies.creationTime2	=作成日時
+
+table.headers.Cache.status		=状態
+
+table.headers.indexedDB.uniqueKey	=ユニークキー
+table.headers.indexedDB.name		=名前
+table.headers.indexedDB.db		=データベース名
+table.headers.indexedDB.storage		=ストレージ
+table.headers.indexedDB.objectStore	=オブジェクトストア名
+table.headers.indexedDB.value		=値
+table.headers.indexedDB.origin		=オリジン
+table.headers.indexedDB.version		=バージョン
+table.headers.indexedDB.objectStores	=オブジェクトストア
+table.headers.indexedDB.keyPath2	=キーパス
+table.headers.indexedDB.autoIncrement	=自動インクリメント
+table.headers.indexedDB.indexes		=インデックス
+
+table.headers.extensionStorage.area	=ストレージ領域
+
+# LOCALIZATION NOTE (label.expires.session):
+# This string is displayed in the expires column when the cookie is Session
+# Cookie
+label.expires.session			=セッション
+
+# LOCALIZATION NOTE (storage.search.placeholder):
+# This is the placeholder text in the sidebar search box
+storage.search.placeholder		=値を絞り込み
+
+# LOCALIZATION NOTE (storage.data.label):
+# This is the heading displayed over the item value in the sidebar
+storage.data.label			=データ
+
+# LOCALIZATION NOTE (storage.parsedValue.label):
+# This is the heading displayed over the item parsed value in the sidebar
+storage.parsedValue.label		=パース済みの値
+
+# LOCALIZATION NOTE (storage.popupMenu.deleteLabel):
+# Label of popup menu action to delete storage item.
+storage.popupMenu.deleteLabel		="%S" を削除
+
+# LOCALIZATION NOTE (storage.popupMenu.addItemLabel):
+# Label of popup menu action to add an item.
+storage.popupMenu.addItemLabel		=アイテムを追加
+
+# LOCALIZATION NOTE (storage.popupMenu.refreshItemLabel):
+# Label of popup menu action to refresh an item.
+storage.popupMenu.refreshItemLabel	=アイテムを再読み込み
+
+# LOCALIZATION NOTE (storage.popupMenu.deleteAllFromLabel):
+# Label of popup menu action to delete all storage items.
+storage.popupMenu.deleteAllFromLabel	="%S" のすべてのアイテムを削除
+
+# LOCALIZATION NOTE (storage.idb.deleteBlocked):
+# Warning notification when IndexedDB database could not be deleted immediately.
+storage.idb.deleteBlocked		=データベース "%S" はすべての接続が切断されてから削除されます。
+
+# LOCALIZATION NOTE (storage.idb.deleteError):
+# Error notification when IndexedDB database could not be deleted.
+storage.idb.deleteError			=データベース "%S" を削除できませんでした。
+
+# LOCALIZATION NOTE (storage.expandPane):
+# This is the tooltip for the button that collapses the right panel in the
+# storage UI when the panel is closed.
+storage.expandPane			=ペインを展開します
+
+# LOCALIZATION NOTE (storage.collapsePane):
+# This is the tooltip for the button that collapses the right panel in the
+# storage UI when the panel is open.
+storage.collapsePane			=ペインを折りたたみます
diff --git a/l10n-ja/devtools/client/styleeditor.ftl b/l10n-ja/devtools/client/styleeditor.ftl
new file mode 100644
index 0000000000..b2aa4f961d
--- /dev/null
+++ b/l10n-ja/devtools/client/styleeditor.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/.
+
+styleeditor-new-button =
+    .tooltiptext = 新しいスタイルシートを作成して、ドキュメントにインポートする
+    .accesskey = N
+styleeditor-import-button =
+    .tooltiptext = 既存のスタイルシートをドキュメントにインポートする
+    .accesskey = I
+styleeditor-visibility-toggle =
+    .tooltiptext = スタイルシートのオン/オフを切り替える
+    .accesskey = S
+styleeditor-save-button = 保存
+    .tooltiptext = このスタイルシートをファイルに保存する
+    .accesskey = S
+styleeditor-options-button =
+    .tooltiptext = スタイルエディターのオプション
+styleeditor-media-rules = メディアクエリー
+styleeditor-editor-textbox =
+    .data-placeholder = ここに CSS を入力します。
+styleeditor-no-stylesheet = このページにはスタイルシートがありません。
+styleeditor-no-stylesheet-tip = それとも、<a data-l10n-name="append-new-stylesheet">新しいスタイルシートを追加</a>しますか？
+styleeditor-open-link-new-tab =
+    .label = リンクを新しいタブで開く
+styleeditor-copy-url =
+    .label = URL をコピー
diff --git a/l10n-ja/devtools/client/styleeditor.properties b/l10n-ja/devtools/client/styleeditor.properties
new file mode 100644
index 0000000000..80a5ce5771
--- /dev/null
+++ b/l10n-ja/devtools/client/styleeditor.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 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		=<インラインスタイルシート #%S>
+
+# LOCALIZATION NOTE  (newStyleSheet): This is the default name for a new
+# user-created style sheet.
+newStyleSheet			=新しいスタイルシート #%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 個のルール
+
+# LOCALIZATION NOTE  (error-load): This is shown when loading fails.
+error-load			=スタイルシートを読み込めませんでした。
+
+# LOCALIZATION NOTE  (error-save): This is shown when saving fails.
+error-save			=スタイルシートを保存できませんでした。
+
+# LOCALIZATION NOTE  (importStyleSheet.title): This is the file picker title,
+# when you import a style sheet into the Style Editor.
+importStyleSheet.title		=スタイルシートのインポート
+
+# LOCALIZATION NOTE  (importStyleSheet.filter): This is the *.css filter title
+importStyleSheet.filter		=CSS ファイル
+
+# LOCALIZATION NOTE  (saveStyleSheet.title): This is the file picker title,
+# when you save a style sheet from the Style Editor.
+saveStyleSheet.title		=スタイルシートを保存
+
+# LOCALIZATION NOTE  (saveStyleSheet.filter): This is the *.css filter title
+saveStyleSheet.filter		=CSS ファイル
+
+# 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  (showOriginalSources.label): This is the label on the context
+# menu item to toggle showing original sources in the editor.
+showOriginalSources.label	=元のソースを表示
+
+# 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  (showMediaSidebar.label): This is the label on the context
+# menu item to toggle showing @media rule shortcuts in a sidebar.
+showMediaSidebar.label		=@media サイドバーを表示
+
+# LOCALIZATION NOTE  (showMediaSidebar.accesskey): This is the access key for
+# the menu item to toggle showing the @media sidebar.
+showMediaSidebar.accesskey	=m
diff --git a/l10n-ja/devtools/client/toolbox-options.ftl b/l10n-ja/devtools/client/toolbox-options.ftl
new file mode 100644
index 0000000000..34cf806710
--- /dev/null
+++ b/l10n-ja/devtools/client/toolbox-options.ftl
@@ -0,0 +1,123 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. 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 = 標準の開発ツール
+# 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 = * 現在のツールボックスには対応していません
+# 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 = 開発ツールのアドオン
+# The label for the heading of group of checkboxes corresponding to the default developer
+# tool buttons.
+options-select-enabled-toolbox-buttons-label = 利用可能なツールボックスボタン
+# The label for the heading of the radiobox corresponding to the theme
+options-select-dev-tools-theme-label = テーマ
+
+## Inspector section
+
+# The heading
+options-context-inspector = 調査
+# The label for the checkbox option to show user agent styles
+options-show-user-agent-styles-label = ブラウザー CSS を表示
+options-show-user-agent-styles-tooltip =
+    .title = このオプションを有効にすると、ブラウザーが読み込んだ既定のスタイルを表示します。
+# The label for the checkbox option to enable collapse attributes
+options-collapse-attrs-label = DOM 属性値を省略
+options-collapse-attrs-tooltip =
+    .title = 値の長い属性を省略します
+
+## "Default Color Unit" options for the Inspector
+
+options-default-color-unit-label = 既定の色単位
+options-default-color-unit-authored = 記述通りの単位
+options-default-color-unit-hex = 16 進数
+options-default-color-unit-hsl = HSL(A)
+options-default-color-unit-rgb = RGB(A)
+options-default-color-unit-name = 色の名前
+
+## Style Editor section
+
+# The heading
+options-styleeditor-label = スタイルエディター
+# The label for the checkbox that toggles autocompletion of css in the Style Editor
+options-stylesheet-autocompletion-label = CSS 自動補完
+options-stylesheet-autocompletion-tooltip =
+    .title = スタイルエディターで CSS プロパティ、値、セレクター入力時に自動補完します
+
+## Screenshot section
+
+# The heading
+options-screenshot-label = スクリーンショットの動作
+# Label for the checkbox that toggles screenshot to clipboard feature
+options-screenshot-clipboard-label = スクリーンショットをクリップボードへコピー
+options-screenshot-clipboard-tooltip =
+    .title = スクリーンショットをクリップボードに直接保存します
+# Label for the checkbox that toggles the camera shutter audio for screenshot tool
+options-screenshot-audio-label = カメラのシャッター音を再生
+options-screenshot-audio-tooltip =
+    .title = スクリーンショット撮影時のカメラ音声を有効にします
+
+## Editor section
+
+# The heading
+options-sourceeditor-label = エディター設定
+options-sourceeditor-detectindentation-tooltip =
+    .title = ソースの内容からインデントを推測します
+options-sourceeditor-detectindentation-label = インデントを検知
+options-sourceeditor-autoclosebrackets-tooltip =
+    .title = 閉じ括弧を自動的に入力します
+options-sourceeditor-autoclosebrackets-label = 閉じ括弧自動入力
+options-sourceeditor-expandtab-tooltip =
+    .title = タブ文字の代わりにスペース文字を使います
+options-sourceeditor-expandtab-label = インデントにスペース文字を使う
+options-sourceeditor-tabsize-label = タブ幅
+options-sourceeditor-keybinding-label = キー割り当て
+options-sourceeditor-keybinding-default-label = 既定
+
+## Advanced section
+
+# The heading
+options-context-advanced-settings = 詳細設定
+# The label for the checkbox that toggles the HTTP cache on or off
+options-disable-http-cache-label = HTTP キャッシュを無効化 (ツールボックスを開いているとき)
+options-disable-http-cache-tooltip =
+    .title = このオプションを有効にすると、ツールボックスを開いているときはすべてのタブの HTTP キャッシュを無効にします。ただし、Service Worker はこのオプションに影響されません
+# The label for checkbox that toggles JavaScript on or off
+options-disable-javascript-label = JavaScript を無効化 *
+options-disable-javascript-tooltip =
+    .title = このオプションを有効にすると、現在のタブの JavaScript を無効にします。タブまたはツールボックスを閉じると、この設定は元に戻されます
+# The label for checkbox that toggles chrome debugging, i.e. the devtools.chrome.enabled preference
+options-enable-chrome-label = ブラウザーとアドオンのデバッガーを有効化
+options-enable-chrome-tooltip =
+    .title = さまざまな開発ツールがブラウザーコンテキスト (ツール > ウェブ開発 > ブラウザーツールボックス) とアドオンマネージャーからのアドオンデバッグで使えるようになります
+
+# The label for checkbox that toggles remote debugging, i.e. the devtools.debugger.remote-enabled preference
+options-enable-remote-label = リモートデバッガーを有効化
+options-enable-remote-tooltip2 =
+    .title = このオプションを有効にすると、このブラウザーインスタンスをリモートでデバッグできるようになります
+
+# The label for checkbox that toggles the service workers testing over HTTP on or off.
+options-enable-service-workers-http-label = HTTP による Service Worker を有効化 (ツールボックスを開いたとき)
+options-enable-service-workers-http-tooltip =
+    .title = このオプションを有効にすると、ツールボックスを開いているすべてのタブで HTTP による Service Worker を有効にします
+# The label for the checkbox that toggles source maps in all tools.
+options-source-maps-label = ソースマップを有効化
+options-source-maps-tooltip =
+    .title = このオプションを有効にすると、ソースがツールにマッピングされます
+# The message shown for settings that trigger page reload
+options-context-triggers-page-refresh = * 現在のセッションのみ有効。再読み込みで復帰
+
+# The label for the checkbox that toggles the display of the platform data in the
+# Profiler i.e. devtools.profiler.ui.show-platform-data a boolean preference in about:config
+options-show-platform-data-label = Gecko プラットフォームのデータを表示
+options-show-platform-data-tooltip =
+    .title = このオプションを有効にすると、JavaScript プロファイラの出力に Gecko プラットフォームのシンボルが含まれるようになります
diff --git a/l10n-ja/devtools/client/toolbox.properties b/l10n-ja/devtools/client/toolbox.properties
new file mode 100644
index 0000000000..142e3d8d02
--- /dev/null
+++ b/l10n-ja/devtools/client/toolbox.properties
@@ -0,0 +1,285 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. 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			=開発ツール — %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$S.
+toolbox.titleTemplate2			=開発ツール — %1$S — %2$S
+
+# LOCALIZATION NOTE (toolbox.multiProcessBrowserToolboxTitle): Title used for
+# the Browser Toolbox when the pref `devtools.browsertoolbox.fission` is true.
+# This Browser Toolbox allows to debug the parent process as well as the content
+# processes in the same toolbox.
+toolbox.multiProcessBrowserToolboxTitle	=マルチプロセスブラウザーツールボックス
+
+# LOCALIZATION NOTE (toolbox.defaultTitle): This is used as the tool
+# name when no tool is selected.
+toolbox.defaultTitle			=開発ツール
+
+# LOCALIZATION NOTE (toolbox.label): This is used as the label for the
+# toolbox as a whole
+toolbox.label				=開発ツール
+
+# LOCALIZATION NOTE (options.toolNotSupportedMarker): This is the template
+# used to add a * marker to the label for the Options Panel tool checkbox for the
+# tool which is not supported for the current toolbox target.
+# The name of the tool: %1$S.
+options.toolNotSupportedMarker		=%1$S *
+
+# LOCALIZATION NOTE (toolbox.pickButton.tooltip)
+# This is the tooltip of the element picker button in the toolbox toolbar.
+# %S is the keyboard shortcut that toggles the element picker.
+toolbox.elementPicker.tooltip		=ページから要素を選択 (%S)
+
+# LOCALIZATION NOTE (toolbox.pickButton.mac.tooltip)
+# Like toolbox.pickButton.tooltip, but for macOS there are two possible keyboard
+# shortcuts: Cmd+Shift+C or Cmd+Opt+C
+toolbox.elementPicker.mac.tooltip	=ページから要素を選択 (%1$S または %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.noContentProcessForTab.message)
+# Used as a message in the alert displayed when trying to open a browser
+# content toolbox and there is no content process running for the current tab
+toolbox.noContentProcessForTab.message	=このタブにコンテンツプロセスはありません。
+
+# 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	=スタイルエディターでファイルを開く
+
+# 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	=デバッガーでファイルを開く
+
+toolbox.resumeOrderWarning		=デバッガーの追加後にページを再開できませんでした。ツールボックスを閉じ、開き直してください。
+
+# 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 fullZoom*Cmd.commandkey values from browser.dtd
+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		=現在の対象ドキュメントとして読み込む iframe を選択
+
+# 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	=このボタンは複数の iframe があるページでのみ有効です。
+
+# 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	=開発ツールのカスタマイズとヘルプ
+
+# LOCALIZATION NOTE (toolbox.meatballMenu.dock.*.label): These labels are shown
+# in the "..." menu in the toolbox and represent the different arrangements for
+# docking (or undocking) the developer tools toolbox.
+toolbox.meatballMenu.dock.bottom.label	=下側に表示
+toolbox.meatballMenu.dock.left.label	=左側に表示
+toolbox.meatballMenu.dock.right.label	=右側に表示
+toolbox.meatballMenu.dock.separateWindow.label	=ウィンドウ分割
+
+# LOCALIZATION NOTE (toolbox.meatballMenu.{splitconsole,hideconsole}.label):
+# These are the labels in the "..." menu in the toolbox for toggling the split
+# console window.
+# The keyboard shortcut will be shown to the side of the label.
+toolbox.meatballMenu.splitconsole.label	=コンソールペインを表示
+toolbox.meatballMenu.hideconsole.label	=コンソールペインを隠す
+
+# LOCALIZATION NOTE (toolbox.meatballMenu.noautohide.label): This is the label
+# in the "..." menu in the toolbox to force the popups/panels to stay visible on
+# blur.
+# This is only visible in the browser toolbox as it is meant for
+# addon developers and Firefox contributors.
+toolbox.meatballMenu.noautohide.label	=ポップアップを自動で隠さない
+
+# LOCALIZATION NOTE (toolbox.meatballMenu.settings.label): This is the label for
+# the item in the "..." menu in the toolbox that brings up the Settings
+# (Options) panel.
+# The keyboard shortcut will be shown to the side of the label.
+toolbox.meatballMenu.settings.label	=設定
+
+# LOCALIZATION NOTE (toolbox.meatballMenu.documentation.label): This is the
+# label for the Documentation menu item.
+toolbox.meatballMenu.documentation.label	=ドキュメント...
+
+# LOCALIZATION NOTE (toolbox.meatballMenu.community.label): This is the label
+# for the Community menu item.
+toolbox.meatballMenu.community.label		=コミュニティ...
+
+# LOCALIZATION NOTE (toolbox.closebutton.tooltip): This is the tooltip for
+# the close button the developer tools toolbox.
+toolbox.closebutton.tooltip	=開発ツールを閉じます
+
+# LOCALIZATION NOTE (toolbox.errorCountButton.tooltip): This is the tooltip for
+# the error count button displayed in the developer tools toolbox.
+toolbox.errorCountButton.tooltip		=コンソールペインを表示
+
+# 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		=ページで発生したエラーの数を表示
+
+# 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	=ソースマップエラー: %1$S\nリソース URL: %2$S\nソースマップ 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$S
+toolbox.sourceMapSourceFailure	=元のソースの取得中にエラーが発生しました: %1$S\nソース 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$S)
+
+# LOCALIZATION NOTE (toolbox.debugTargetInfo.runtimeLabel.thisFirefox): this is displayed
+# as a toolbox header in about:devtools-toolbox, when inspecting the current Firefox runtime
+# (for instance, when inspecting one of its tabs in about:debugging)
+# e.g. This Firefox (65.0a1)
+# The version of runtime: %S
+toolbox.debugTargetInfo.runtimeLabel.thisFirefox	=この Firefox (%S)
+
+# LOCALIZATION NOTE (toolbox.debugTargetInfo.tabTitleRemote):
+# Used as the tab title for about:devtools-toolbox when connected to a remote target.
+# The connection type (see toolbox.debugTargetInfo.connection.*): %1$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			=ツールボックス (%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$S
+toolbox.debugTargetInfo.tabTitleLocal			=ツールボックス - %1$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			=ツールボックス - エラー発生
+
+# 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		=ネットワーク
+
+# LOCALIZATION NOTE (toolbox.debugTargetInfo.reload):
+# Used as the reload button tooltip
+toolbox.debugTargetInfo.reload				=再読み込み
+
+# LOCALIZATION NOTE (toolbox.debugTargetInfo.forward):
+# Used as the navigation's "forward" button tooltip
+toolbox.debugTargetInfo.forward				=進む
+
+# LOCALIZATION NOTE (toolbox.debugTargetInfo.back):
+# Used as the navigation's "back" button tooltip
+toolbox.debugTargetInfo.back				=戻る
+
+# 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		=拡張機能
+toolbox.debugTargetInfo.targetType.process		=プロセス
+toolbox.debugTargetInfo.targetType.tab			=タブ
+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	=ブラウザーツールボックスの接続状態:
+
+# 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		=エラー
+
+# 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	=デバッグ対象に接続できません。以下の詳細なエラーを確認してください:
+
+# 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			=非推奨です。詳細...
+
+# 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		=マルチプロセスブラウザーツールボックスを有効化 (ブラウザーツールボックスの再起動が必要です)
diff --git a/l10n-ja/devtools/client/tooltips.ftl b/l10n-ja/devtools/client/tooltips.ftl
new file mode 100644
index 0000000000..62872afc27
--- /dev/null
+++ b/l10n-ja/devtools/client/tooltips.ftl
@@ -0,0 +1,109 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. 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">詳細</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 = この要素はフレックスコンテナーでもグリッドコンテナーでもないため、<strong>{ $property }</strong> はこの要素に影響を及ぼしません。
+
+inactive-css-not-grid-or-flex-container-or-multicol-container = この要素はフレックスコンテナーでもグリッドコンテナーでも、段組みコンテナーないため、<strong>{ $property }</strong> はこの要素に影響を及ぼしません。
+
+inactive-css-not-grid-or-flex-item = この要素はグリッドアイテムでもフレックスアイテムでもないため、<strong>{ $property }</strong> はこの要素に影響を及ぼしません。
+
+inactive-css-not-grid-item = この要素はグリッドアイテムではないため、<strong>{ $property }</strong> はこの要素に影響を及ぼしません。
+
+inactive-css-not-grid-container = この要素はグリッドコンテナーではないため、<strong>{ $property }</strong> はこの要素に影響を及ぼしません。
+
+inactive-css-not-flex-item = この要素はフレックスアイテムではないため、<strong>{ $property }</strong> はこの要素に影響を及ぼしません。
+
+inactive-css-not-flex-container = この要素はフレックスコンテナーではないため、<strong>{ $property }</strong> はこの要素に影響を及ぼしません。
+
+inactive-css-not-inline-or-tablecell = この要素はインライン要素でもテーブルのセル要素でもないため、<strong>{ $property }</strong> はこの要素に影響を及ぼしません。
+
+inactive-css-property-because-of-display = この要素は <strong>{ $display }</strong> の display プロパティを持つため、<strong>{ $property }</strong> はこの要素に影響を及ぼしません。
+
+inactive-css-not-display-block-on-floated = この要素は <strong>floated<strong> であるため、<strong>display</strong> の値はエンジンによって <strong>block</strong> に変更されました。
+
+inactive-css-property-is-impossible-to-override-in-visited = <strong>:visited</strong> の制限により、<strong>{ $property }</strong> をオーバーライドすることはできません。
+
+inactive-css-position-property-on-unpositioned-box = この要素は配置の指定がないため、<strong>{ $property }</strong> はこの要素に影響を及ぼしません。
+
+inactive-text-overflow-when-no-overflow = <strong>overflow:hidden</strong> が設定されてないため、<strong>{ $property }</strong> はこの要素に影響を及ぼしません。
+
+inactive-outline-radius-when-outline-style-auto-or-none = この要素の <strong>outline-style</strong> は <strong>auto</strong> または <strong>none</strong> となっているため、<strong>{ $property }</strong> はこの要素に影響を及ぼしません。
+
+inactive-css-not-for-internal-table-elements = <strong>{ $property }</strong> はテーブルを構成する要素に影響を及ぼしません。
+
+inactive-css-not-for-internal-table-elements-except-table-cells = <strong>{ $property }</strong> はセル以外のテーブルを構成する要素に影響を及ぼしません。
+
+inactive-css-not-table = テーブルではないため、<strong>{ $property }</strong> はこの要素に影響を及ぼしません。
+
+## 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 = <strong>display:grid</strong> または <strong>display:flex</strong> を追加してみてください。{ learn-more }
+
+inactive-css-not-grid-or-flex-container-or-multicol-container-fix = <strong>display:grid</strong>, <strong>display:flex</strong>, または <strong>columns:2</strong> のいずれかを追加してみてください。{ learn-more }
+
+inactive-css-not-grid-or-flex-item-fix-2 = <strong>display:grid</strong>, <strong>display:flex</strong>, <strong>display:inline-grid</strong>, または <strong>display:inline-flex</strong> を追加してみてください。{ learn-more }
+
+inactive-css-not-grid-item-fix-2 =<strong>display:grid</strong> または <strong>display:inline-grid</strong> を要素の親に追加してみてください。{ learn-more }
+
+inactive-css-not-grid-container-fix = <strong>display:grid</strong> または <strong>display:inline-grid</strong> を追加してみてください。{ learn-more }
+
+inactive-css-not-flex-item-fix-2 = <strong>display:flex</strong> または <strong>display:inline-flex</strong> を要素の親に追加してみてください。{ learn-more }
+
+inactive-css-not-flex-container-fix = <strong>display:flex</strong> または <strong>display:inline-flex</strong> を追加してみてください。{ learn-more }
+
+inactive-css-not-inline-or-tablecell-fix = <strong>display:inline</strong> または <strong>display:table-cell</strong> を追加してみてください。{ learn-more }
+
+inactive-css-non-replaced-inline-or-table-row-or-row-group-fix = <strong>display:inline-block</strong> または <strong>display:block</strong> を追加してみてください。{ learn-more }
+
+inactive-css-non-replaced-inline-or-table-column-or-column-group-fix = <strong>display:inline-block</strong> を追加してみてください。{ learn-more }
+
+inactive-css-not-display-block-on-floated-fix = <strong>float</strong> を削除、または <strong>display:block</strong> を追加してみてください。{ learn-more }
+
+inactive-css-position-property-on-unpositioned-box-fix = <strong>position</strong> プロパティに <strong>static</strong> 以外の値を設定してみてください。{ learn-more }
+
+inactive-text-overflow-when-no-overflow-fix = <strong>overflow:hidden</strong> を追加してみてください。 { learn-more }
+
+inactive-css-not-for-internal-table-elements-fix = <strong>セル</strong>、<strong>列</strong>、<strong>行</strong>、<strong>列グループ</strong>、<strong>行グループ</strong> または <strong>フッターグループ</strong> 以外の要素に <strong>display</strong> プロパティを設定してみてください。{ learn-more }
+
+inactive-css-not-for-internal-table-elements-except-table-cells-fix = <strong>列</strong>、<strong>行</strong>、<strong>列グループ</strong>、<strong>行グループ</strong> または <strong>フッターグループ</strong> 以外の要素に <strong>display</strong> プロパティを設定してみてください。{ learn-more }
+
+inactive-outline-radius-when-outline-style-auto-or-none-fix = <strong>outline-style</strong> プロパティに <strong>auto</strong> または <strong>none</strong> 以外の値を設定してみてください。{ learn-more }
+
+inactive-css-not-table-fix = <strong>display:table</strong> または <strong>display:inline-table</strong> を追加してみてください。{ 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> はこれらのブラウザーではサポートされていません:
+
+css-compatibility-deprecated-experimental-message = <strong>{ $property }</strong> は実験的なプロパティでしたが、現在は W3C 標準により非推奨とされています。これらのブラウザーではサポートされていません:
+
+css-compatibility-deprecated-experimental-supported-message = <strong>{ $property }</strong> は実験的なプロパティでしたが、現在は W3C 標準により非推奨とされています。
+
+css-compatibility-deprecated-message = <strong>{ $property }</strong> は W3C 標準により非推奨とされています。これらのブラウザーではサポートされていません:
+
+css-compatibility-deprecated-supported-message = <strong>{ $property }</strong> は W3C 標準により非推奨とされています。
+
+css-compatibility-experimental-message = <strong>{ $property }</strong> は実験的なプロパティです。これらのブラウザーではサポートされていません:
+
+css-compatibility-experimental-supported-message = <strong>{ $property }</strong> は実験的なプロパティです。
+
+css-compatibility-learn-more-message = <strong>{ $rootProperty }</strong> についての <span data-l10n-name="link">詳細</span>
diff --git a/l10n-ja/devtools/client/webconsole.properties b/l10n-ja/devtools/client/webconsole.properties
new file mode 100644
index 0000000000..ef9d188093
--- /dev/null
+++ b/l10n-ja/devtools/client/webconsole.properties
@@ -0,0 +1,561 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. 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 (browserConsole.title): shown as the
+# title when opening the browser console popup
+browserConsole.title		=ブラウザーコンソール
+
+# LOCALIZATION NOTE (multiProcessBrowserConsole.title): Title of the Browser
+# Console window when the pref `devtools.browsertoolbox.fission` is true. This
+# Browser Console will log messages from all processes, not just the the parent
+# process.
+multiProcessBrowserConsole.title	=マルチプロセスブラウザーコンソール
+
+# LOCALIZATION NOTE (timestampFormat): %1$02S = hours (24-hour clock),
+# %2$02S = minutes, %3$02S = seconds, %4$03S = milliseconds.
+timestampFormat			=%1$02S:%2$02S:%3$02S.%4$03S
+
+ConsoleAPIDisabled		=ウェブコンソールのログ記録 API (console.log, console.info, console.warn, console.error) は、このページ上のスクリプトにより無効化されています。
+
+# LOCALIZATION NOTE (webConsoleXhrIndicator): the indicator displayed before
+# a URL in the Web Console that was requested using an XMLHttpRequest.
+webConsoleXhrIndicator		=XHR
+
+# LOCALIZATION NOTE (webConsoleMoreInfoLabel): the more info tag displayed
+# after security related web console messages.
+webConsoleMoreInfoLabel		=詳細
+
+# LOCALIZATION NOTE (stacktrace.anonymousFunction): this string is used to
+# display JavaScript functions that have no given name - they are said to be
+# anonymous. Test console.trace() in the webconsole.
+stacktrace.anonymousFunction	=<匿名関数>
+
+# LOCALIZATION NOTE (stacktrace.asyncStack): this string is used to
+# indicate that a given stack frame has an async parent.
+# %S is the "Async Cause" of the frame.
+stacktrace.asyncStack		=(非同期: %S)
+
+# LOCALIZATION NOTE (timeLog): this string is used to display the result of
+# the console.timeLog() call. Parameters: %1$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 - タイマー終了
+
+# 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			=コンソールの内容が消去されました。
+
+# LOCALIZATION NOTE (noCounterLabel): this string is used to display
+# count-messages with no label provided.
+noCounterLabel			=<ラベルなし>
+
+# LOCALIZATION NOTE (counterDoesntExist): this string is displayed when
+# console.countReset() is called with a counter that doesn't exist.
+counterDoesntExist		=カウンター “%S” は存在しません。
+
+# LOCALIZATION NOTE (noGroupLabel): this string is used to display
+# console.group messages with no label provided.
+noGroupLabel			=<グループラベルなし>
+
+maxTimersExceeded		=ページ内で使用可能なタイマー数が上限に達しました。
+timerAlreadyExists		=タイマー “%S” はすでに存在します。
+timerDoesntExist		=タイマー “%S” は存在しません。
+timerJSError			=タイマー名の処理に失敗しました。
+
+# LOCALIZATION NOTE (connectionTimeout): message displayed when the Remote Web
+# Console fails to connect to the server due to a timeout.
+connectionTimeout				=接続がタイムアウトしました。原因と思われるエラーメッセージを、エラーコンソールで確認してください。ウェブコンソールを開きなおして、やり直してください。
+
+# LOCALIZATION NOTE (propertiesFilterPlaceholder): this is the text that
+# appears in the filter text box for the properties view container.
+propertiesFilterPlaceholder			=プロパティを絞り込み
+
+# 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 回
+
+# 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				=クリックするとインスペクターでノードを選択します
+
+# LOCALIZATION NOTE (cdFunctionInvalidArgument): the text that is displayed when
+# cd() is invoked with an invalid argument.
+cdFunctionInvalidArgument			=指定のウィンドウに cd() できません。引数が不正です。
+
+# 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					=重大な警告: 自分で理解していないものを貼り付けるときは、よく注意してください。あなたの認証情報が傍受されたり、コンピューターが乗っ取られる可能性があります。貼り付けを許可するには、以下に '%S' と入力してください。Enter キーは不要です。
+
+# 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 (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				=メッセージの詳細を表示または隠します。
+
+# LOCALIZATION NOTE (groupToggle): the text that is displayed when
+# you hover the arrow for expanding/collapsing the messages of a group.
+groupToggle					=グループを表示または隠します。
+
+# LOCALIZATION NOTE (table.index, table.iterationIndex, table.key, table.value):
+# the column header displayed in the console table widget.
+table.index		=(添字)
+table.iterationIndex	=(イテレーション添字)
+table.key		=名前
+table.value		=値
+
+# LOCALIZATION NOTE (level.error, level.warn, level.info, level.log, level.debug):
+# tooltip for icons next to console output
+level.error		=エラー
+level.warn		=警告
+level.info		=メッセージ
+level.log		=ログ
+level.debug		=デバッグ
+
+# LOCALIZATION NOTE (logpoint.title)
+# Tooltip shown for logpoints sent from the debugger
+logpoint.title		=デバッガーからのログポイント
+
+# LOCALIZATION NOTE (blockedReason.title)
+# Tooltip shown for blocked network events sent from the network panel
+blockedrequest.label	=開発ツールによりブロックされました
+
+# 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		=リンクの URL をコピー
+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		=URL を新しいタブで開く
+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	=ネットワークパネルで開く
+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	=要求を再送
+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	=インスペクターで確認
+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		=グローバル変数として格納
+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	=メッセージをコピー
+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	=オブジェクトをコピー
+webconsole.menu.copyObject.accesskey	=o
+
+# LOCALIZATION NOTE (webconsole.menu.selectAll.label)
+# Label used for a context-menu item that will select all the content of the webconsole
+# output.
+webconsole.menu.selectAll.label		=すべて選択
+webconsole.menu.selectAll.accesskey	=A
+
+# 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	=サイドバーでオブジェクトを調査
+webconsole.menu.openInSidebar.accesskey	=V
+
+# LOCALIZATION NOTE (webconsole.menu.exportSubmenu.label)
+# Label used for a context-menu item displayed on the output. Clicking on it
+# opens a submenu where the user can select how to export messages.
+webconsole.menu.exportSubmenu.label			=表示メッセージをエクスポート:
+
+# LOCALIZATION NOTE (webconsole.menu.exportClipboard.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.exportSubmenu.exportCliboard.label	=クリップボード
+
+# LOCALIZATION NOTE (webconsole.menu.exportFile.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.exportSubmenu.exportFile.label		=ファイル
+
+# 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		=ウェブコンソールの出力を消去します
+
+# 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	=フィルターバーを表示します
+
+# LOCALIZATION NOTE (webconsole.filterInput.placeholder)
+# Label used for for the placeholder on the filter input, in the console top toolbar.
+webconsole.filterInput.placeholder	=出力を絞り込み
+
+# 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	=エラー
+
+# 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	=警告
+
+# 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	=ログ
+
+# 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	=情報
+
+# 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	=デバッグ
+
+# 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	=エラーチェックのため CSS が再パースされます。ページを再読み込みすると Javascript で変更された CSS のエラーも確認できます。
+
+# 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	=要求
+
+# 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 個の隠れアイテム
+
+# 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 個のアイテムがテキストフィルターで隠れています
+
+# 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				=コンソール設定
+
+# 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		=ツールバーを小さくする
+
+# 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			=タイムスタンプを表示
+# LOCALIZATION NOTE (webconsole.console.settings.menu.item.timestamps.tooltip)
+webconsole.console.settings.menu.item.timestamps.tooltip		=このオプションを有効にすると、ウェブコンソールにタイムスタンプを表示します
+
+# 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		=類似メッセージをグループ化
+# LOCALIZATION NOTE (webconsole.console.settings.menu.item.warningGroups.tooltip)
+webconsole.console.settings.menu.item.warningGroups.tooltip		=このオプションを有効にすると、類似するメッセージをグループにまとめます
+
+# 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		=入力候補の表示
+# LOCALIZATION NOTE (webconsole.console.settings.menu.item.autocomplete.tooltip)
+webconsole.console.settings.menu.item.autocomplete.tooltip		=このオプションを有効にすると、キー入力時に入力候補を表示します
+
+# LOCALIZATION NOTE (webconsole.console.settings.menu.item.enablePersistentLogs.label)
+webconsole.console.settings.menu.item.enablePersistentLogs.label	=永続ログ
+# LOCALIZATION NOTE (webconsole.console.settings.menu.item.enablePersistentLogs.tooltip)
+webconsole.console.settings.menu.item.enablePersistentLogs.tooltip	=このオプションを有効にすると、新しいページへ移動しても出力が消去されなくなります
+
+# LOCALIZATION NOTE (webconsole.console.settings.menu.item.instantEvaluation.label)
+webconsole.console.settings.menu.item.instantEvaluation.label		=即時評価
+# LOCALIZATION NOTE (webconsole.console.settings.menu.item.instantEvaluation.tooltip)
+webconsole.console.settings.menu.item.instantEvaluation.tooltip		=このオプションを有効にすると、キー入力時に即時評価が行われます
+
+# LOCALIZATION NOTE (browserconsole.contentMessagesCheckbox.label)
+# Label used in the browser console filter bar. This label is used for a checkbox that
+# allows the user to show or hide console messages from the content process in the browser
+# console.
+browserconsole.contentMessagesCheckbox.label	=コンテンツメッセージを表示
+# LOCALIZATION NOTE (browserconsole.contentMessagesCheckbox.tooltip)
+# Tooltip for the "Show content messages" checkbox in the Browser Console filter bar.
+browserconsole.contentMessagesCheckbox.tooltip	=このオプションを有効にすると、コンテンツプロセスからのメッセージを出力します。
+
+# 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			=%S に移動しました
+
+# LOCALIZATION NOTE (webconsole.closeSplitConsoleButton.tooltip): This is the tooltip for
+# the close button of the split console.
+webconsole.closeSplitConsoleButton.tooltip	=分割コンソールを閉じます (Esc)
+
+# LOCALIZATION NOTE (webconsole.closeSidebarButton.tooltip): This is the tooltip for
+# the close button of the sidebar.
+webconsole.closeSidebarButton.tooltip		=サイドバーを閉じます
+
+# 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	=検索履歴
+
+# 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	=閉じます (%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 件中 #1 件目
+
+# 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		=見つかりませんでした
+
+# 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	=前を検索 (%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	=次を検索 (%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			=プロパティリストの取得に %S の getter を呼び出しますか？
+
+# 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	=呼び出し (%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		=閉じる (%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			=次のセレクターにマッチする要素: %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		=[開発ツールエラー] 申し訳ありません。メッセージを表示できませんでした。起こりえないエラーが発生しました - %S にバグ報告して、説明のメッセージのメタデータを貼りつけてもらえますでしょうか？
+
+# LOCALIZATION NOTE (webconsole.message.commands.blockedURL)
+# Label displayed when the :block <url> command is successful
+# Parameters: %S is the URL filter
+webconsole.message.commands.blockedURL		=“%S” が含まれる URL の要求をブロックするようにしました
+
+# 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	=ブロッキングフィルター “%S” を解除しました
+
+# LOCALIZATION NOTE (webconsole.messages.commands.blockArgMissing)
+# Message displayed when no filter is passed to block/unblock command
+webconsole.messages.commands.blockArgMissing	=フィルターが指定されませんでした
+
+# 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	=メッセージのメタデータをクリップボードにコピー
+
+
+# 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		=実行
+
+# 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		=履歴の逆検索を開きます (%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	=履歴の逆検索を閉じます (%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		=式を実行します。(%S) 入力した式は消去されません。
+
+# 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	=式を整形します
+
+# 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	=前の式へ戻ります
+
+
+# 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	=次の式へ進みます
+
+# 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			=インラインモードに戻ります (%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			=マルチラインモードに切り替えます (%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 個のメッセージ
+
+# 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$S is the shorcut to evaluate the expression (
+# Ctrl+Enter or Cmd+Enter on OSX).
+webconsole.input.editor.onboarding.label			=マルチラインモードにすると、コードをより早く繰り返し実行できます。行を追加するときは %1$S を、実行するときは %2$S を使います。
+
+# 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		=試してみる
+
+# 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				=JavaScript ファイルを開く
+
+# LOCALIZATION NOTE (webconsole.input.openJavaScriptFileFilter):
+# This string is displayed as a filter when opening a file in the console input.
+webconsole.input.openJavaScriptFileFilter			=JavaScript ファイル
+
+# 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		=トップ
+
+# 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	=評価コンテキストを選択します
+
+# LOCALIZATION NOTE (webconsole.group.cookieSameSiteLaxByDefaultEnabled): do not translate 'sameSite'.
+webconsole.group.cookieSameSiteLaxByDefaultEnabled	=一部の Cookie は “sameSite“ 属性がないため、期待通りの動作にはなりません
+# LOCALIZATION NOTE (webconsole.group.cookieSameSiteLaxByDefaultDisabled): do not translate 'sameSite'.
+webconsole.group.cookieSameSiteLaxByDefaultDisabled	=一部の Cookie は推奨される “sameSite“ 属性がありません
+
+# LOCALIZATION NOTE (webconsole.group.cookieSameSiteLaxByDefaultEnabled2): do not translate 'SameSite'.
+webconsole.group.cookieSameSiteLaxByDefaultEnabled2	=一部の Cookie は “sameSite“ 属性がないため、期待通りの動作にはなりません
+# LOCALIZATION NOTE (webconsole.group.cookieSameSiteLaxByDefaultDisabled2): do not translate 'SameSite'.
+webconsole.group.cookieSameSiteLaxByDefaultDisabled2	=一部の Cookie は推奨される “sameSite“ 属性がありません
diff --git a/l10n-ja/devtools/shared/accessibility.properties b/l10n-ja/devtools/shared/accessibility.properties
new file mode 100644
index 0000000000..80f3627d64
--- /dev/null
+++ b/l10n-ja/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		=コントラスト: %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	=計算できません
+
+# 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	=コントラスト:
+
+# 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	=コントラスト (大きな文字):
+
+# 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		=“alt” 属性を使って “href” 属性を持つ “area” 要素にラベルをつけてください。
+
+# 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		=ダイアログにはラベルをつけるべきです。
+
+# 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	=ドキュメントには title が必要です。
+
+# 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		=埋め込みコンテンツにはラベルをつける必要があります。
+
+# 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		=キャプションのついた figure にはラベルをつけるべきです。
+
+# 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” 要素にはラベルをつける必要があります。
+
+# 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	=“legend” 要素を使って “fieldset” にラベルをつけてください。
+
+# 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		=フォームの各要素にはラベルをつける必要があります。
+
+# 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	=フォームの各要素には目視可能なテキストのラベルをつけるべきです。
+
+# 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” 要素にはラベルをつける必要があります。
+
+# 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		=“alt” 属性を使って “mglyph” 要素にラベルをつけてください。
+
+# 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		=見出しにはラベルをつける必要があります。
+
+# 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	=見出しには目視可能なテキストの内容があるべきです。
+
+# 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		=“title” 属性を使って “iframe” の内容を記述してください。
+
+# 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		=画像を含むコンテンツにはラベルをつける必要があります。
+
+# 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	=インタラクティブな要素にはラベルをつける必要があります。
+
+# 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	=“label” 属性を使って “optgroup” にラベルをつけてください。
+
+# 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		=複数のツールバーがある場合は、ラベルをつける必要があります。
+
+# 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		=フォーカス可能な要素は、対話的なセマンティクスを持つべきです。
+
+# 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		=“tabindex” 属性に 0 より大きい値を指定することは避けてください。
+
+# 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		=インタラクティブな要素はキーボード操作でアクティブにできるようにする必要があります。
+
+# 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		=インタラクティブな要素はフォーカス可能にする必要があります。
+
+# 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	=フォーカス可能な要素にフォーカス時のスタイル付けが足りない可能性があります。
+
+# 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		=クリック可能な要素は、フォーカス可能かつ対話的なセマンティクスを持つべきです。
diff --git a/l10n-ja/devtools/shared/debugger.properties b/l10n-ja/devtools/shared/debugger.properties
new file mode 100644
index 0000000000..1eeda67b4c
--- /dev/null
+++ b/l10n-ja/devtools/shared/debugger.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/.
+
+# 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 (remoteIncomingPromptTitle): The title displayed on the
+# dialog that prompts the user to allow the incoming connection.
+remoteIncomingPromptTitle		=リモートデバッグ接続要求
+
+# LOCALIZATION NOTE (remoteIncomingPromptHeader): Header displayed on the
+# dialog that prompts the user to allow the incoming connection.
+remoteIncomingPromptHeader		=リモートデバッグの接続許可を求められています。リモートクライアントがあなたのブラウザーを操作できるようになります！
+# 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	=クライアント側エンドポイント: %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	=サーバー側エンドポイント: %1$S
+# LOCALIZATION NOTE (remoteIncomingPromptFooter): Footer displayed on the
+# dialog that prompts the user to allow the incoming connection.
+remoteIncomingPromptFooter		=接続を許可しますか？
+
+# LOCALIZATION NOTE (remoteIncomingPromptDisable): The label displayed on the
+# third button in the incoming connection dialog that lets the user disable the
+# remote debugger server.
+remoteIncomingPromptDisable		=無効化
+
+# LOCALIZATION NOTE (clientSendOOBTitle): The title displayed on the dialog that
+# instructs the user to transfer an authentication token to the server.
+clientSendOOBTitle			=クライアント識別
+# LOCALIZATION NOTE (clientSendOOBHeader): Header displayed on the dialog that
+# instructs the user to transfer an authentication token to the server.
+clientSendOOBHeader			=接続先のエンドポイントがこの接続の認証情報を必要としています。以下のトークンを接続先に表示されるプロンプトに提供してください。
+# LOCALIZATION NOTE (clientSendOOBHash): Part of the dialog that instructs the
+# user to transfer an authentication token to the server.
+# %1$S: The client's cert fingerprint
+clientSendOOBHash			=証明書フィンガープリント: %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			=トークン: %1$S
+
+# LOCALIZATION NOTE (serverReceiveOOBTitle): The title displayed on the dialog
+# that instructs the user to provide an authentication token from the client.
+serverReceiveOOBTitle			=クライアントトークンの提供
+# LOCALIZATION NOTE (serverReceiveOOBBody): Main text displayed on the dialog
+# that instructs the user to provide an authentication token from the client.
+serverReceiveOOBBody			=クライアント側にトークン値が表示されているはずです。ここのトークン値を入力し、このクライアントの認証を完了してください。
diff --git a/l10n-ja/devtools/shared/eyedropper.properties b/l10n-ja/devtools/shared/eyedropper.properties
new file mode 100644
index 0000000000..8cbf96f8b4
--- /dev/null
+++ b/l10n-ja/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=コピーしました
diff --git a/l10n-ja/devtools/shared/highlighters.properties b/l10n-ja/devtools/shared/highlighters.properties
new file mode 100644
index 0000000000..b4b22bc49a
--- /dev/null
+++ b/l10n-ja/devtools/shared/highlighters.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/.
+
+# LOCALIZATION NOTE This file contains strings used in highlighters.
+# Highlighters are visualizations that DevTools draws on top of content to aid
+# in understanding content sizing, etc.
+
+# LOCALIZATION NOTE (grid.rowColumnPositions): The row and column position of a grid
+# cell shown in the grid cell infobar when hovering over the CSS grid outline.
+grid.rowColumnPositions=行 %S / 列 %S
+
+# LOCALIZATION NOTE (gridType.container): the layout type of an element shown in
+# the infobar when hovering over a DOM element and it is a grid container.
+gridType.container=グリッドコンテナー
+
+# LOCALIZATION NOTE (gridType.item): the layout type of an element shown in
+# the infobar when hovering over a DOM element and it is a grid item.
+gridType.item=グリッドアイテム
+
+# LOCALIZATION NOTE (gridType.dual): 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=グリッドコンテナー / アイテム
+
+# LOCALIZATION NOTE (flexType.container): the layout type of an element shown in
+# the infobar when hovering over a DOM element and it is a flex container.
+flexType.container=フレックスコンテナー
+
+# LOCALIZATION NOTE (flexType.item): the layout type of an element shown in
+# the infobar when hovering over a DOM element and it is a flex item.
+flexType.item=フレックスアイテム
+
+# LOCALIZATION NOTE (flexType.dual): 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=フレックスコンテナー / アイテム
diff --git a/l10n-ja/devtools/shared/screenshot.properties b/l10n-ja/devtools/shared/screenshot.properties
new file mode 100644
index 0000000000..08b1178986
--- /dev/null
+++ b/l10n-ja/devtools/shared/screenshot.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 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 (screenshotDesc) A very short description of the
+# 'screenshot' command. Displayed when the --help flag is passed to
+# the screenshot command.
+screenshotDesc			=ページのスクリーンショット画像を保存します
+
+# 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		=保存ファイル名
+
+# LOCALIZATION NOTE (screenshotFilenameManual) A fuller description of the
+# 'filename' parameter to the 'screenshot' command.
+screenshotFilenameManual	=保存する画像ファイルの名前 (拡張子は ‘.png’ になります)。
+
+# 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		=画像をクリップボードにコピーします (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	=ファイルに保存せずにクリップボードにコピーする場合は、true を指定します。
+
+# 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		=オプション
+
+# 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		=タイマー (秒)
+
+# 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		=保存するタイミングを遅らすタイマーを設定します (秒単位)
+
+# 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		=端末のピクセル比
+
+# 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		=スクリーンショット撮影に使用する端末のピクセル比
+
+# 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		=ウェブページ全体を保存します (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	=現在の表示範囲外の領域も画像に含める場合は、true を指定します。
+
+# 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		=ファイルに保存します (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		=他のオプション (クリップボードへのコピー) が有効な場合でもスクリーンショットをファイルに保存する場合は、true を指定します。
+
+# 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	=%1$S の保存時にエラーが発生しました
+
+# LOCALIZATION NOTE (screenshotSavedToFile) Text displayed to user when the
+# screenshot is successfully saved to the file specified.
+# The argument (%1$S) is the filename.
+screenshotSavedToFile		=%1$S に保存しました
+
+# LOCALIZATION NOTE (screenshotErrorCopying) Text displayed to user upon
+# encountering error while copying the screenshot to clipboard.
+screenshotErrorCopying		=クリップボードへのコピー時にエラーが発生しました。
+
+# LOCALIZATION NOTE (screenshotCopied) Text displayed to user when the
+# screenshot is successfully copied to the clipboard.
+screenshotCopied		=クリップボードにコピーしました。
+
+# LOCALIZATION NOTE (inspectNodeDesc) A very short string to describe the
+# 'node' parameter to the 'inspect' command. Displayed when the
+# --help flag is passed to the `screenshot command.
+inspectNodeDesc			=CSS セレクター
+
+# LOCALIZATION NOTE (inspectNodeManual) A fuller description of the 'node'
+# parameter to the 'inspect' command. Displayed when the --help flag is
+# passed to the `screenshot command.
+inspectNodeManual		=document.querySelector() で一意に識別可能な CSS セレクター
+
+# LOCALIZATION NOTE (screenshotTruncationWarning) Text displayed to user when the image
+# that would be created by the screenshot is too big and needs to be truncated to avoid
+# errors.
+# The first parameter is the width of the final image and the second parameter is the
+# height of the image.
+screenshotTruncationWarning	=画像が大きすぎたため、%1$S×%2$S のサイズに切り抜きました。
+
+# LOCALIZATION NOTE (screenshotDPRDecreasedWarning2) Text displayed to user when
+# taking the screenshot initially failed. When the Device Pixel Ratio is larger
+# than 1.0 a second try immediately after displaying this message is attempted.
+screenshotDPRDecreasedWarning	=画像が大きすぎたため、devicePixelRatio を 1 にしました。
+
+# LOCALIZATION NOTE (screenshotRenderingError) Text displayed to user upon
+# encountering an error while rendering the screenshot. This most often happens when the
+# resulting image is too large to be rendered.
+screenshotRenderingError	=画像の作成でエラーが発生しました。おそらく画像が大きすぎます。
+
+# LOCALIZATION NOTE (screenshotNoSelectorMatchWarning) Text displayed to user when the
+# provided selector for the screenshot does not match any element on the page.
+# The argument (%1$S) is selector.
+screenshotNoSelectorMatchWarning	=セレクター ‘%S’ に一致する要素はこのページにありません。
diff --git a/l10n-ja/devtools/shared/shared.properties b/l10n-ja/devtools/shared/shared.properties
new file mode 100644
index 0000000000..db9161a02f
--- /dev/null
+++ b/l10n-ja/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-ja/devtools/shared/styleinspector.properties b/l10n-ja/devtools/shared/styleinspector.properties
new file mode 100644
index 0000000000..07b3415910
--- /dev/null
+++ b/l10n-ja/devtools/shared/styleinspector.properties
@@ -0,0 +1,242 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. 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		=適用
+rule.status.MATCHED		=適用候補
+rule.status.PARENT_MATCH	=親要素
+
+# LOCALIZATION NOTE (rule.sourceElement, rule.sourceInline): 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), or from the element itself (element).
+rule.sourceInline		=インライン
+rule.sourceElement		=要素
+
+# 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		=%S から継承
+
+# LOCALIZATION NOTE (rule.keyframe): Shown for CSS Rules keyframe header.
+# Will be passed an identifier of the keyframe animation name.
+rule.keyframe			=キーフレーム %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		=(ユーザーエージェント)
+
+# LOCALIZATION NOTE (rule.pseudoElement): Shown for CSS rules
+# pseudo element header
+rule.pseudoElement		=疑似要素
+
+# LOCALIZATION NOTE (rule.selectedElement): Shown for CSS rules element header if
+# pseudo elements are present in the rule view.
+rule.selectedElement		=この要素
+
+# 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		=無効な値
+
+# 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		=無効な名前
+
+# 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	=このプロパティを含むフィルタールール
+
+# LOCALIZATION NOTE (rule.empty): Text displayed when the highlighter is
+# first opened and there's no node selected in the rule view.
+rule.empty			=要素が選択されていません。
+
+# 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 は未設定です
+
+# 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		=このセレクターと一致するすべての要素を強調します
+
+# 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			=クリックでカラーピッカーを開き、Shift+クリックでカラー書式を変更します
+
+# 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			=クリックでタイミング関数エディターを開きます
+
+# 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			=クリックでフィルターエディターを開きます
+
+# 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+クリックで角度書式を変更します
+
+# 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				=クリックで flexbox のハイライト表示を切り替えます
+
+# 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				=クリックで CSS グリッド枠の表示を切り替えます
+
+# 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		=スタイルを絞り込み
+
+# 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			=新しいルールを追加します
+
+# 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		=疑似クラスを切り替えます
+
+# 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	=クラスを切り替えます
+
+# 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	=新しいクラスを追加
+
+# 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		=この要素にはクラスがありません
+
+# 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		=このページの print メディアのシミュレーションを切り替えます。
+
+# 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	=このページのカラースキームのシミュレーションを切り替えます。
+
+# LOCALIZATION NOTE (rule.twistyCollapse.label): The text a screen reader
+# speaks when the header of a rule is expanded.
+rule.twistyCollapse.label		=折りたたみます
+
+# LOCALIZATION NOTE (rule.twistyExpand.label): The text a screen reader
+# speaks when the header of a rule is collapsed.
+rule.twistyExpand.label			=展開します
+
+# LOCALIZATION NOTE (styleinspector.contextmenu.copyColor): Text displayed in the rule
+# and computed view context menu when a color value was clicked.
+styleinspector.contextmenu.copyColor		=色をコピー
+
+# 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		=URL をコピー
+
+# 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	=画像のデータ URL をコピー
+
+# 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		=画像のデータ URL のコピーに失敗しました
+
+# LOCALIZATION NOTE (styleinspector.contextmenu.toggleOrigSources): Text displayed in the rule view
+# context menu.
+styleinspector.contextmenu.toggleOrigSources	=元のソースを表示
+
+# 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		=新しいルールを追加
+
+# 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		=すべて選択
+
+# 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			=コピー
+
+# 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		=URL をコピー
+
+# LOCALIZATION NOTE (styleinspector.contextmenu.copyDeclaration): Text
+# displayed in the rule view context menu for copying the CSS declaration.
+styleinspector.contextmenu.copyDeclaration	=CSS 宣言をコピー
+
+# LOCALIZATION NOTE (styleinspector.contextmenu.copyPropertyName): Text displayed in
+# the rule view context menu for copying the property name.
+styleinspector.contextmenu.copyPropertyName	=プロパティ名をコピー
+
+# LOCALIZATION NOTE (styleinspector.contextmenu.copyPropertyValue): Text displayed in
+# the rule view context menu for copying the property value.
+styleinspector.contextmenu.copyPropertyValue	=プロパティの値をコピー
+
+# LOCALIZATION NOTE (styleinspector.contextmenu.copyRule): Text displayed in the
+# rule view context menu for copying the rule.
+styleinspector.contextmenu.copyRule		=ルールをコピー
+
+# LOCALIZATION NOTE (styleinspector.contextmenu.copySelector): Text displayed in the
+# rule view context menu for copying the selector.
+styleinspector.contextmenu.copySelector		=セレクターをコピー
diff --git a/l10n-ja/devtools/startup/aboutDevTools.ftl b/l10n-ja/devtools/startup/aboutDevTools.ftl
new file mode 100644
index 0000000000..e45d260af2
--- /dev/null
+++ b/l10n-ja/devtools/startup/aboutDevTools.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/.
+
+head-title = 開発ツールについて
+enable-title = Firefox 開発ツールを有効にする
+enable-inspect-element-title = Firefox 開発ツールを有効にして、要素を調査する
+enable-inspect-element-message = 開発ツールの要素調査機能で HTML と CSS の調査や編集ができます。
+enable-about-debugging-message = Firefox 開発ツールで、ブラウザー拡張機能や Web Worker、Service Worker を開発、デバッグできます。
+enable-key-shortcut-message = 開発ツールのショートカットを有効にしました。誤操作だった場合はこのタブを閉じてください。
+enable-menu-message = インスペクターやデバッガーなどのツールで、あなたのサイトの HTML や CSS、JavaScript が完璧になります。
+enable-common-message = ブラウザをより詳細にコントロールできる Firefox 開発ツールは既定の設定では無効になっています。
+enable-learn-more-link = 開発ツールの詳細
+enable-enable-button = Firefox 開発ツールを有効にする
+enable-close-button = このタブを閉じる
+welcome-title = Firefox 開発ツールにようこそ！
+newsletter-title = Mozilla Developer Newsletter
+newsletter-message = 開発者向けのニュースや小技、リソースをメールでお届けします。
+newsletter-email-placeholder =
+    .placeholder = メールアドレス
+newsletter-privacy-label = <a data-l10n-name="privacy-policy">Mozilla プライバシーポリシー</a>で説明される個人情報の取扱いに同意します。
+newsletter-subscribe-button = 購読
+newsletter-thanks-title = ありがとうございます！
+newsletter-thanks-message = 今までに Mozilla 関連のニュースレターを購読したことがない場合は、受信トレイやスパムフィルターを確認してください。
+footer-title = Firefox Developer Edition
+footer-message = 単なる開発ツール以上のものをお探しですか？ 開発者と新しい作業フローのために特別にビルドされた Firefox をお試しください。
+footer-learn-more-link = 詳細
+features-learn-more = 詳細
+features-inspector-title = インスペクター
+features-inspector-desc = コードの調査と最適化をして、ピクセルパーフェクトなレイアウトを構築できます。 <a data-l10n-name="learn-more">{ features-learn-more }</a>
+features-console-title = コンソール
+features-console-desc = CSS や JavaScript、セキュリティ、ネットワーク問題を追跡できます。 <a data-l10n-name="learn-more">{ features-learn-more }</a>
+features-debugger-title = デバッガー
+features-debugger-desc = あなたのフレームワークもサポートする強力な JavaScript デバッガーです。 <a data-l10n-name="learn-more">{ features-learn-more }</a>
+features-network-title = ネットワーク
+features-network-desc = あなたのサイトで問題となるネットワークリクエストを監視できます。 <a data-l10n-name="learn-more">{ features-learn-more }</a>
+features-storage-title = ストレージ
+features-storage-desc = キャッシュや Cookie、データベース、セッションデータの追加や削除、変更ができます。 <a data-l10n-name="learn-more">{ features-learn-more }</a>
+features-responsive-title = レスポンシブデザインモード
+features-responsive-desc = ブラウザーで端末をエミュレートして、サイトをテストできます。 <a data-l10n-name="learn-more">{ features-learn-more }</a>
+features-visual-editing-title = スタイルエディター
+features-visual-editing-desc = アニメーションや文字寄せ、余白の微調整ができます。 <a data-l10n-name="learn-more">{ features-learn-more }</a>
+features-performance-title = パフォーマンス
+features-performance-desc = ボトルネックを取り除き、プロセスとアセットを最適化できます。 <a data-l10n-name="learn-more">{ features-learn-more }</a>
+features-memory-title = メモリー
+features-memory-desc = メモリーリークを発見して、アプリケーションを高速化できます。 <a data-l10n-name="learn-more">{ features-learn-more }</a>
+# Variables:
+#   $errorDescription (String) - The error that occurred e.g. 404 - Not Found
+newsletter-error-common = 購読を申し込めませんでした。({ $errorDescription })
+newsletter-error-unknown = 予期しないエラーが発生しました。
+newsletter-error-timeout = 購読の申し込みがタイムアウトしました。
+# Variables:
+#   $shortcut (String) - The keyboard shortcut used for the tool
+welcome-message = 開発ツールを有効にしました！ ウェブ開発メニューを開くか、{ $shortcut } でツールを開くと、開発ツールが使えます。
diff --git a/l10n-ja/devtools/startup/key-shortcuts.properties b/l10n-ja/devtools/startup/key-shortcuts.properties
new file mode 100644
index 0000000000..c2700241d9
--- /dev/null
+++ b/l10n-ja/devtools/startup/key-shortcuts.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 (toggleToolbox.commandkey):
+# Key pressed to open a toolbox with the default panel selected
+toggleToolbox.commandkey	=I
+
+# LOCALIZATION NOTE (toggleToolboxF12.commandkey):
+# Alternative key pressed to open a toolbox with the default panel selected
+toggleToolboxF12.commandkey	=VK_F12
+
+# LOCALIZATION NOTE (browserToolbox.commandkey):
+# Key pressed to open the Browser Toolbox, used for debugging Firefox itself
+browserToolbox.commandkey	=I
+
+# LOCALIZATION NOTE (browserConsole.commandkey):
+# Key pressed to open the Browser Console, used for debugging Firefox itself
+browserConsole.commandkey	=J
+
+# LOCALIZATION NOTE (responsiveDesignMode.commandkey):
+# Key pressed to toggle on the Responsive Design Mode
+responsiveDesignMode.commandkey	=M
+
+# LOCALIZATION NOTE (inspector.commandkey):
+# Key pressed to open a toolbox with the inspector panel selected
+inspector.commandkey		=C
+
+# LOCALIZATION NOTE (webconsole.commandkey):
+# Key pressed to open a toolbox with the web console panel selected
+webconsole.commandkey		=K
+
+# LOCALIZATION NOTE (jsdebugger.commandkey2):
+# Key pressed to open a toolbox with the debugger panel selected
+jsdebugger.commandkey2		=Z
+
+# LOCALIZATION NOTE (netmonitor.commandkey):
+# Key pressed to open a toolbox with the network monitor panel selected
+netmonitor.commandkey		=E
+
+# LOCALIZATION NOTE (styleeditor.commandkey):
+# Key pressed to open a toolbox with the style editor panel selected
+styleeditor.commandkey		=VK_F7
+
+# LOCALIZATION NOTE (performance.commandkey):
+# Key pressed to open a toolbox with the performance panel selected
+performance.commandkey		=VK_F5
+
+# LOCALIZATION NOTE (storage.commandkey):
+# Key pressed to open a toolbox with the storage panel selected
+storage.commandkey		=VK_F9
+
+# LOCALIZATION NOTE (dom.commandkey):
+# Key pressed to open a toolbox with the DOM panel selected
+dom.commandkey			=W
+
+# LOCALIZATION NOTE (accessibilityF12.commandkey):
+# Key pressed to open a toolbox with the accessibility panel selected
+accessibilityF12.commandkey	=VK_F12
+
+# LOCALIZATION NOTE (profilerStartStop.commandkey):
+# Key pressed to start or stop the performance profiler
+profilerStartStop.commandkey	=VK_1
+
+# LOCALIZATION NOTE (profilerCapture.commandkey):
+# Key pressed to capture a recorded performance profile
+profilerCapture.commandkey	=VK_2
diff --git a/l10n-ja/devtools/startup/startup.properties b/l10n-ja/devtools/startup/startup.properties
new file mode 100644
index 0000000000..f29a9b73e1
--- /dev/null
+++ b/l10n-ja/devtools/startup/startup.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/.
+
+# LOCALIZATION NOTE (enableDevTools.label):
+# Label for the menu item displayed in Tools > Developer Tools when DevTools are disabled.
+enableDevTools.label		=開発ツールを有効化...
+enableDevTools.accesskey	=E