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+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# Features must be added here to be accessible through the NimbusFeature API.
+
+"no-feature-firefox-desktop":
+ description: A dummy feature for experiments that target no feature.
+ owner: barret@mozilla.com
+ applications:
+ - firefox-desktop
+ - firefox-desktop-background-task
+ hasExposure: false
+ variables: {}
+
+testFeature:
+ description: Test only feature
+ owner: barret@mozilla.com
+ applications:
+ - firefox-desktop
+ - firefox-desktop-background-task
+ hasExposure: false
+ isEarlyStartup: true
+ variables:
+ enabled:
+ type: boolean
+ description: Whether or not this feature is enabled
+ testInt:
+ type: int
+ fallbackPref: nimbus.testing.testInt
+ description: Int pref used by platform API tests
+ testSetString:
+ type: string
+ setPref: nimbus.testing.testSetString
+ description: A string pref set by Nimbus tests
+
+nimbus-qa-1:
+ description: A feature for testing pref-setting on the default branch.
+ owner: barret@mozilla.com
+ hasExposure: false
+ variables:
+ value:
+ type: string
+ setPref: nimbus.qa.pref-1
+ description: The value to set for the pref.
+
+nimbus-qa-2:
+ description: A feature for testing pref-setting on the user branch.
+ owner: barret@mozilla.com
+ isEarlyStartup: true
+ hasExposure: false
+ variables:
+ value:
+ type: string
+ setPref: nimbus.qa.pref-2
+ description: The value to set for the pref.
+
+# `search` is for search engine experimentation features which do not require
+# isEarlyStartup to be set.
+search:
+ description: Search engine experimentation support and testing features.
+ owner: search-and-suggest-program@mozilla.com
+ hasExposure: false
+ variables:
+ extraParams:
+ type: json
+ description: >-
+ This allows extra parameters to be set for search engines requests including,
+ where calls to the suggestions API, the search engine configuration defines
+ those parameters.
+
+ The use of this field should be coordinated with the Search team.
+
+ The field value is an array of objects with key/value fields. For example:
+
+ [
+ {"key": "google_channel_row", "value": "foo"}
+ ]
+
+ This is matched to a section in the search configuration:
+
+ "extraParams": [
+ {
+ "name": "channel",
+ "pref": "google_channel_row",
+ "condition": "pref"
+ }
+ ],
+
+ In this case, the resulting URL for the appropriate search engine would have
+ `&channel=foo` added to the URL when doing searches.
+
+ If the key is not referenced in the search configuration, then no parameter
+ will be added. Only the search team can update the configuration.
+ cbhStudyUs:
+ type: string
+ setPref: browser.search.param.google_channel_us
+ description: >-
+ NOTE: Please use `extraParams` rather than this field.
+ A string pref set by Nimbus tests for US search cohort
+ cbhStudyRow:
+ type: string
+ setPref: browser.search.param.google_channel_row
+ description: >-
+ NOTE: Please use `extraParams` rather than this field.
+ A string pref set by Nimbus tests for Rest of World (ROW) search cohort
+ richSuggestionsFeatureGate:
+ type: boolean
+ setPref: browser.urlbar.richSuggestions.featureGate
+ description: >-
+ Feature gate that controls whether Rich Suggestions are enabled.
+ serpEventTelemetryEnabled:
+ type: boolean
+ setPref: browser.search.serpEventTelemetry.enabled
+ description: Whether the Glean SERP event telemetry is enabled.
+
+# `searchConfiguration` is for search experiment features for items that require
+# isEarlyStartup to be true. These items may require a reload of the search
+# engine configuration, and an additional reload may happen during the startup
+# process.
+searchConfiguration:
+ description: Search experimentation support for the engine configuration
+ owner: search-and-suggest-program@mozilla.com
+ isEarlyStartup: true
+ hasExposure: false
+ variables:
+ experiment:
+ type: string
+ fallbackPref: browser.search.experiment
+ description: >-
+ Used to activate only matching configurations that contain the value in
+ `experiment`
+ seperatePrivateDefaultUIEnabled:
+ type: boolean
+ description: Whether the UI for the separate private default feature is enabled.
+ seperatePrivateDefaultUrlbarResultEnabled:
+ type: boolean
+ description: Whether the urlbar result for the separate private default is shown.
+
+urlbar:
+ description: The Address Bar
+ owner: search-and-suggest-program@mozilla.com
+ hasExposure: true
+ exposureDescription: >-
+ The timing of the exposure event depends on the experiment, but generally
+ the event is recorded once per app session when the user first encounters
+ the UI of the experiment in which they're enrolled.
+ variables:
+ addonsFeatureGate:
+ type: boolean
+ fallbackPref: browser.urlbar.addons.featureGate
+ description: >-
+ Feature gate that controls whether all aspects of the addons suggestion
+ feature are exposed to the user.
+ addonsShowLessFrequentlyCap:
+ type: int
+ description: >-
+ If defined and non-zero, this is the maximum number of times the user
+ will be able to click the "Show less frequently" command for addon
+ suggestions. If undefined or zero, the user will be able to click the
+ command without any limit.
+ addonsUITreatment:
+ type: string
+ enum:
+ - a
+ - b
+ description: >-
+ Define the UI type for addon suggestions.
+ In case of "a", display rating stars and review volume on the bottom of
+ the suggestion. In case of "b", display a label explaining that the
+ addon suggestion is a recommendation.
+ autoFillAdaptiveHistoryEnabled:
+ type: boolean
+ fallbackPref: browser.urlbar.autoFill.adaptiveHistory.enabled
+ description: Whether enabling adaptive history autofill.
+ autoFillAdaptiveHistoryMinCharsThreshold:
+ type: int
+ fallbackPref: browser.urlbar.autoFill.adaptiveHistory.minCharsThreshold
+ description: Minimum char length of the user's search string to trigger adaptive history autofill.
+ autoFillAdaptiveHistoryUseCountThreshold:
+ type: string
+ description: This value assumes float expression like "0.47". Threshold for use count of input history that we handle as adaptive history autofill. If the use count is this value or more, it will be a candidate.
+ bestMatchBlockingEnabled:
+ type: boolean
+ fallbackPref: browser.urlbar.bestMatch.blockingEnabled
+ description: Whether best match Suggest suggestions can be blocked.
+ bestMatchEnabled:
+ type: boolean
+ fallbackPref: browser.urlbar.bestMatch.enabled
+ description: Gate for the best match feature. If false, the best match preferences UI and best match suggestions will not be shown. If true, the preferences UI will be shown, and the user can turn best match suggestions on or off.
+ experimentType:
+ type: string
+ description: The type of the experiment (or rollout). If "best-match", then the Nimbus exposure event will be recorded when the user first triggers a best match (or would have triggered a best match, for users in the control group). If "modal", the event will be recorded when the user first triggers to show the onbording dialog. If empty, the event will be recorded when the user first triggers any type of Suggest suggestion.
+ enum:
+ - best-match
+ - modal
+ - ""
+ isBestMatchExperiment:
+ type: boolean
+ description: >-
+ Whether the experiment (or rollout) is related to best match. If true, then the Nimbus exposure event will be recorded when the user first triggers a best match (or would have triggered a best match, for users in the control group). Deprecated, please use `experimentType: "best-match"` instead.
+ merinoClientVariants:
+ type: string
+ fallbackPref: browser.urlbar.merino.clientVariants
+ description: >-
+ Comma separated list of client variants to report to the Merino server.
+ May impact server behavior.
+ merinoEnabled:
+ type: boolean
+ fallbackPref: browser.urlbar.merino.enabled
+ description: Whether Merino is enabled as a quick suggest source
+ merinoEndpointURL:
+ type: string
+ fallbackPref: browser.urlbar.merino.endpointURL
+ description: The Merino endpoint URL, not including parameters.
+ merinoProviders:
+ type: string
+ fallbackPref: browser.urlbar.merino.providers
+ description: >-
+ Comma-separated list of providers to request from the Merino server.
+ Merino will return suggestions only for these providers.
+ merinoTimeoutMs:
+ type: int
+ fallbackPref: browser.urlbar.merino.timeoutMs
+ description: Timeout for Merino fetches (ms)
+ exposureResults:
+ type: string
+ setPref: browser.urlbar.exposureResults
+ description: >-
+ Comma-separated list of result type combinations, that are used to determine if an exposure event should be fired.
+ showExposureResults:
+ type: boolean
+ setPref: browser.urlbar.showExposureResults
+ description: >-
+ Boolean used to determine if the results defined in `exposureResults` should be shown in search results. Should be false for Control branch of an experiment.
+ quickSuggestAllowPositionInSuggestions:
+ type: boolean
+ fallbackPref: browser.urlbar.quicksuggest.allowPositionInSuggestions
+ description: Whether quick suggest results can be shown in position specified in the suggestions.
+ quickSuggestBlockingEnabled:
+ type: boolean
+ fallbackPref: browser.urlbar.quicksuggest.blockingEnabled
+ description: Whether the usual non-best-match Suggest suggestions can be blocked.
+ quickSuggestDataCollectionEnabled:
+ type: boolean
+ description: Whether data collection should be enabled by default. If this variable is specified, it will override the value implied by the scenario. It will never override the user's local preference to disable (or enable) data collection, if the user has already toggled that preference.
+ quickSuggestEnabled:
+ type: boolean
+ fallbackPref: browser.urlbar.quicksuggest.enabled
+ description: Gate for the Firefox Suggest feature as a whole. If false, the Firefox Suggest preferences UI and Suggest suggestions will not be shown. If true, the preferences UI will be shown, and the user can turn suggestions on or off.
+ quickSuggestImpressionCapsSponsoredEnabled:
+ type: boolean
+ fallbackPref: browser.urlbar.quicksuggest.impressionCaps.sponsoredEnabled
+ description: Whether sponsored suggestions are subject to impression frequency caps. If false, sponsored suggestions can be shown an unlimited number of times over any given period. If true, sponsored suggestion impressions will be subject to the caps in the remote settings configuration.
+ quickSuggestImpressionCapsNonSponsoredEnabled:
+ type: boolean
+ fallbackPref: browser.urlbar.quicksuggest.impressionCaps.nonSponsoredEnabled
+ description: Whether non-sponsored suggestions are subject to impression frequency caps. If false, non-sponsored suggestions can be shown an unlimited number of times over any given period. If true, non-sponsored suggestion impressions will be subject to the caps in the remote settings configuration.
+ quickSuggestNonSponsoredEnabled:
+ type: boolean
+ description: Whether non-sponsored suggestions should be enabled by default. If this variable is specified, it will override the value implied by the scenario. It will never override the user's local preference to disable (or enable) non-sponsored suggestions, if the user has already toggled that preference.
+ quickSuggestNonSponsoredIndex:
+ type: int
+ fallbackPref: browser.urlbar.quicksuggest.nonSponsoredIndex
+ description: >-
+ The index of non-sponsored QuickSuggest results within the general
+ group. A negative index is relative to the end of the group
+ quickSuggestOnboardingDialogVariation:
+ type: string
+ description: >-
+ Specify the messages/UI variation for QuickSuggest onboarding dialog. This value is case insensitive.
+ quickSuggestRemoteSettingsDataType:
+ type: string
+ description: The `type` of the suggestions data in remote settings. If not specified, "data" is used.
+ quickSuggestRemoteSettingsEnabled:
+ type: boolean
+ fallbackPref: browser.urlbar.quicksuggest.remoteSettings.enabled
+ description: Whether Remote Settings is enabled as a quick suggest source
+ quickSuggestScenario:
+ # IMPORTANT: This should not have a fallbackPref. See UrlbarPrefs.jsm.
+ type: string
+ description: The Firefox Suggest scenario in which the user is enrolled
+ enum:
+ - history
+ - offline
+ - online
+ quickSuggestShouldShowOnboardingDialog:
+ type: boolean
+ fallbackPref: browser.urlbar.quicksuggest.shouldShowOnboardingDialog
+ description: Whether or not to show the QuickSuggest onboarding dialog
+ quickSuggestShowOnboardingDialogAfterNRestarts:
+ type: int
+ fallbackPref: browser.urlbar.quicksuggest.showOnboardingDialogAfterNRestarts
+ description: Show QuickSuggest onboarding dialog after N browser restarts
+ quickSuggestSponsoredEnabled:
+ type: boolean
+ description: Whether sponsored suggestions should be enabled by default. If this variable is specified, it will override the value implied by the scenario. It will never override the user's local preference to disable (or enable) sponsored suggestions, if the user has already toggled that preference.
+ quickSuggestSponsoredIndex:
+ type: int
+ fallbackPref: browser.urlbar.quicksuggest.sponsoredIndex
+ description: >-
+ The index of sponsored QuickSuggest results within the general group. A
+ negative index is relative to the end of the group
+ recordNavigationalSuggestionTelemetry:
+ type: boolean
+ description: Whether to record navigational suggestion telemetry. Defaults to false.
+ showSearchTermsFeatureGate:
+ type: boolean
+ fallbackPref: browser.urlbar.showSearchTerms.featureGate
+ description: Gate for the show search terms feature. If false, the preference#search will not show the search terms feature checkbox, and search terms will never persist in the urlbar. If true, the preference checkbox will be shown on preferences#search, and the user can choose to persist search terms on or off in the urlbar.
+ weatherFeatureGate:
+ type: boolean
+ fallbackPref: browser.urlbar.weather.featureGate
+ description: >-
+ Feature gate that controls whether all aspects of the weather suggestion
+ feature are exposed to the user. See also `weatherKeywords` and
+ `weatherKeywordsMinimumLength`. In summary: To enable the weather
+ suggestion, set `weatherFeatureGate` to true, `weatherKeywords` to an
+ array of full keyword strings, and `weatherKeywordsMinimumLength` to a
+ non-zero integer. To disable the weather suggestion, leave out all
+ weather-related variables.
+ weatherKeywords:
+ type: json
+ description: >-
+ An array of full keyword strings that will trigger the weather
+ suggestion when the user types them in the address bar. If absent or
+ null, Firefox will fall back to the weather keywords defined in remote
+ settings. If neither Nimbus nor remote settings defines any keywords,
+ the weather suggestion will be disabled. See also
+ `weatherKeywordsMinimumLength`.
+ weatherKeywordsMinimumLength:
+ type: int
+ description: >-
+ If defined and non-zero, the weather suggestion will be triggered by
+ typing any prefix of a full weather keyword when the prefix is at least
+ `weatherKeywordsMinimumLength` characters long. If this variable is
+ absent or zero, Firefox will fall back to the minimum length defined in
+ remote settings. If neither Nimbus nor remote settings defines a minimum
+ length, only full keywords will trigger the suggestion. See also
+ `weatherKeywords`.
+ weatherKeywordsMinimumLengthCap:
+ type: int
+ description: >-
+ If defined and non-zero, the user will not be able to increment the
+ minimum keyword length beyond this value. e.g., if this value is 6, the
+ current minimum length is 5, and the user clicks "Show less frequently",
+ then the minimum length will be incremented to 6, the "Show less
+ frequently" command will be hidden, and the user can continue to trigger
+ the weather suggestion by typing 6 characters, but they will not be able
+ to increment the minimum length any further. If this variable is absent
+ or zero, Firefox will fall back to the cap defined in remote settings.
+ If neither Nimbus nor remote settings defines a cap, no cap will be
+ used, and the user will be able to increment the minimum length without
+ any limit.
+
+frecency:
+ description: "The address bar ranking algorithm"
+ owner: search-and-suggest-program@mozilla.com
+ hasExposure: false
+ isEarlyStartup: true
+ variables:
+ originsAlternativeEnable:
+ description: >-
+ Use an alternative ranking algorithm for autofilling origins, that is
+ mainly domains of Web pages. When the user types the beginning of an
+ origin, we autofill the whole origin. Whether autofill happens depends
+ on the ranking algorithm. Bookmarks are always autofilled anyway.
+ type: boolean
+ setPref: "places.frecency.origins.alternative.featureGate"
+ originsDaysCutOff:
+ description: >-
+ The alternative ranking algorithm only considers pages visited in the
+ last N days, where N is controlled by this variable.
+ type: int
+ setPref: "places.frecency.origins.alternative.daysCutOff"
+
+aboutwelcome:
+ description: "The about:welcome page"
+ owner: omc@mozilla.com
+ hasExposure: true
+ exposureDescription: >-
+ Exposure is sent once per browsing session when the about:welcome URL is
+ first accessed.
+ isEarlyStartup: true
+ variables:
+ enabled:
+ type: boolean
+ fallbackPref: browser.aboutwelcome.enabled
+ description: >-
+ Should users see about:welcome? If this is false, users will see a
+ regular new tab instead.
+ id:
+ type: string
+ description: >-
+ Descriptive ID for the about:welcome content
+ screens:
+ type: json
+ fallbackPref: browser.aboutwelcome.screens
+ description: Content to show in the onboarding flow
+ languageMismatchEnabled:
+ type: boolean
+ fallbackPref: intl.multilingual.aboutWelcome.languageMismatchEnabled
+ description: >-
+ Suggest to change the language on about:welcome when there is a mismatch with
+ the OS.
+ transitions:
+ type: boolean
+ description: Enable transition effect between screens
+ showModal:
+ type: boolean
+ fallbackPref: browser.aboutwelcome.showModal
+ description: >-
+ Should users see window modal onboarding
+ backdrop:
+ type: string
+ fallbackPref: browser.aboutwelcome.backdrop
+ description: >-
+ Specify the color to be used to update the background color
+
+moreFromMozilla:
+ description: "New page on about:preferences to suggest more Mozilla products"
+ owner: omc@mozilla.com
+ hasExposure: true
+ exposureDescription: >-
+ Exposure is sent once per browsing session when the about:preferences URL is
+ first accessed.
+ variables:
+ enabled:
+ type: boolean
+ fallbackPref: browser.preferences.moreFromMozilla
+ description: Should users see the new more from Mozilla section.
+ template:
+ type: string
+ fallbackPref: browser.preferences.moreFromMozilla.template
+ description: UI template used to display Mozilla products. Possible values simple, advanced. Default is simple.
+
+abouthomecache:
+ description: "The startup about:home cache."
+ owner: omc@mozilla.com
+ hasExposure: false
+ isEarlyStartup: true
+ variables:
+ enabled:
+ type: boolean
+ fallbackPref: browser.startup.homepage.abouthome_cache.enabled
+ description: Is the feature enabled?
+
+newtab:
+ description: "The about:newtab page"
+ owner: omc@mozilla.com
+ hasExposure: true
+ exposureDescription: >-
+ Exposure is sent once per browsing session when the first newtab page loads
+ (either about:newtab or about:home).
+ isEarlyStartup: true
+ variables:
+ newTheme:
+ type: boolean
+ description: Enable the new theme
+ customizationMenuEnabled:
+ type: boolean
+ fallbackPref: browser.newtabpage.activity-stream.customizationMenu.enabled
+ description: Enable the customization panel inside of the newtab
+ prefsButtonIcon:
+ type: string
+ description: Icon url to use for the preferences button
+ topSitesContileEnabled:
+ type: boolean
+ fallbackPref: browser.topsites.contile.enabled
+ description: Enable the Contile integration for Sponsored Top Sites
+ topSitesUseAdditionalTilesFromContile:
+ type: boolean
+ description: Allow Contile to use additonal sponsored top sites
+
+pocketNewtab:
+ description: The Pocket section in newtab
+ owner: sdowne@getpocket.com
+ hasExposure: false
+ isEarlyStartup: true
+ variables:
+ spocPositions:
+ type: string
+ fallbackPref: browser.newtabpage.activity-stream.discoverystream.spoc-positions
+ description: CSV string of spoc position indexes on newtab Pocket grid
+ spocTopsitesPositions:
+ type: string
+ fallbackPref: browser.newtabpage.activity-stream.discoverystream.spoc-topsites-positions
+ description: CSV string of spoc position indexes on newtab topsites section
+ spocAdTypes:
+ type: string
+ fallbackPref: browser.newtabpage.activity-stream.discoverystream.spocAdTypes
+ description: CSV string of data to set the spoc content.
+ spocZoneIds:
+ type: string
+ fallbackPref: browser.newtabpage.activity-stream.discoverystream.spocZoneIds
+ description: CSV string of data to set the spoc content.
+ spocTopsitesAdTypes:
+ type: string
+ fallbackPref: browser.newtabpage.activity-stream.discoverystream.spocTopsitesAdTypes
+ description: CSV string of data to set the spoc content.
+ spocTopsitesZoneIds:
+ type: string
+ fallbackPref: browser.newtabpage.activity-stream.discoverystream.spocTopsitesZoneIds
+ description: CSV string of data to set the spoc content.
+ spocSiteId:
+ type: string
+ fallbackPref: browser.newtabpage.activity-stream.discoverystream.spocSiteId
+ description: String ID to set the spoc content.
+ widgetPositions:
+ type: string
+ fallbackPref: browser.newtabpage.activity-stream.discoverystream.widget-positions
+ description: CSV string of widget position indexes on newtab grid
+ hybridLayout:
+ type: boolean
+ fallbackPref: browser.newtabpage.activity-stream.discoverystream.hybridLayout.enabled
+ description: Enable compact cards on newtab grid only for specific breakpoints
+ hideCardBackground:
+ type: boolean
+ fallbackPref: browser.newtabpage.activity-stream.discoverystream.hideCardBackground.enabled
+ description: Removes Pocket card background and borders.
+ fourCardLayout:
+ type: boolean
+ fallbackPref: browser.newtabpage.activity-stream.discoverystream.fourCardLayout.enabled
+ description: Enable four Pocket cards per row.
+ newFooterSection:
+ type: boolean
+ fallbackPref: >-
+ browser.newtabpage.activity-stream.discoverystream.newFooterSection.enabled
+ description: Enable an updated Pocket section topics footer
+ saveToPocketCard:
+ type: boolean
+ fallbackPref: >-
+ browser.newtabpage.activity-stream.discoverystream.saveToPocketCard.enabled
+ description: >-
+ A save to Pocket button inside the card, shown on the card thumbnail, on
+ hover.
+ saveToPocketCardRegions:
+ type: string
+ fallbackPref: >-
+ browser.newtabpage.activity-stream.discoverystream.saveToPocketCardRegions
+ description: >-
+ CSV string of regions that support the save to Pocket button inside the card.
+ hideDescriptions:
+ type: boolean
+ fallbackPref: >-
+ browser.newtabpage.activity-stream.discoverystream.hideDescriptions.enabled
+ description: >-
+ Hide or display descriptions for Pocket stories on newtab.
+ hideDescriptionsRegions:
+ type: string
+ fallbackPref: >-
+ browser.newtabpage.activity-stream.discoverystream.hideDescriptionsRegions
+ description: >-
+ CSV string of regions that hide descriptions for Pocket stories on newtab.
+ compactGrid:
+ type: boolean
+ fallbackPref: >-
+ browser.newtabpage.activity-stream.discoverystream.compactGrid.enabled
+ description: >-
+ Reduce the number of pixels between the Pocket cards on newtab.
+ compactImages:
+ type: boolean
+ fallbackPref: >-
+ browser.newtabpage.activity-stream.discoverystream.compactImages.enabled
+ description: >-
+ Reduce the height on Pocket card images on newtab.
+ imageGradient:
+ type: boolean
+ fallbackPref: >-
+ browser.newtabpage.activity-stream.discoverystream.imageGradient.enabled
+ description: >-
+ Add a gradient to the bottom of Pocket card images on newtab to blend the
+ image in with the card.
+ titleLines:
+ type: int
+ fallbackPref: >-
+ browser.newtabpage.activity-stream.discoverystream.titleLines
+ description: >-
+ Changes the maximum number of lines a title can be for Pocket cards on newtab.
+ descLines:
+ type: int
+ fallbackPref: >-
+ browser.newtabpage.activity-stream.discoverystream.descLines
+ description: >-
+ Changes the maximum number of lines a description can be for Pocket cards on newtab.
+ onboardingExperience:
+ type: boolean
+ fallbackPref: >-
+ browser.newtabpage.activity-stream.discoverystream.onboardingExperience.enabled
+ description: >-
+ Enables an onboarding experience for Pocket section on newtab.
+ essentialReadsHeader:
+ type: boolean
+ fallbackPref: >-
+ browser.newtabpage.activity-stream.discoverystream.essentialReadsHeader.enabled
+ description: >-
+ Updates the Pocket section header and title to say "Today’s Essential Reads",
+ moves the "Recommended by Pocket" header to the right side.
+ editorsPicksHeader:
+ type: boolean
+ fallbackPref: >-
+ browser.newtabpage.activity-stream.discoverystream.editorsPicksHeader.enabled
+ description: >-
+ Updates the Pocket section header and title to say "Editor’s Picks", if used with
+ essentialReadsHeader, creates a second section 2 rows down for editorsPicksHeader.
+ recentSavesEnabled:
+ type: boolean
+ fallbackPref: >-
+ browser.newtabpage.activity-stream.discoverystream.recentSaves.enabled
+ description: >-
+ Updates the Pocket section with a new header and 1 row of recently saved Pocket stories.
+ readTime:
+ type: boolean
+ fallbackPref: >-
+ browser.newtabpage.activity-stream.discoverystream.readTime.enabled
+ description: >-
+ Displays an estimated read time for Pocket cards on newtab.
+ newSponsoredLabel:
+ type: boolean
+ fallbackPref: >-
+ browser.newtabpage.activity-stream.discoverystream.newSponsoredLabel.enabled
+ description: >-
+ Updates the sponsored label position to below the image for Pocket cards on newtab.
+ sendToPocket:
+ type: boolean
+ fallbackPref: >-
+ browser.newtabpage.activity-stream.discoverystream.sendToPocket.enabled
+ description: >-
+ Decides what to do when a logged out user click "Save to Pocket" from a Pocket card.
+ recsPersonalized:
+ type: boolean
+ fallbackPref: >-
+ browser.newtabpage.activity-stream.discoverystream.recs.personalized
+ description: >-
+ Enables Pocket stories personalization.
+ spocsPersonalized:
+ type: boolean
+ fallbackPref: >-
+ browser.newtabpage.activity-stream.discoverystream.spocs.personalized
+ description: >-
+ Enables Pocket sponsored content personalization.
+ spocsCacheTimeout:
+ type: int
+ fallbackPref: >-
+ browser.newtabpage.activity-stream.discoverystream.spocs.cacheTimeout
+ description: >-
+ Set sponsored content cache timeout in minutes.
+ discoveryStreamConfig:
+ description: A JSON blob of discovery stream configuration.
+ type: string
+ setPref: "browser.newtabpage.activity-stream.discoverystream.config"
+ spocsEndpoint:
+ description: The URL for the spocs endpoint.
+ type: string
+ setPref: "browser.newtabpage.activity-stream.discoverystream.spocs-endpoint"
+ regionStoriesConfig:
+ description: A comma-separated list of region to get stories for.
+ type: string
+ fallbackPref: >-
+ browser.newtabpage.activity-stream.discoverystream.region-stories-config
+ regionBffConfig:
+ type: string
+ fallbackPref: >-
+ browser.newtabpage.activity-stream.discoverystream.region-bff-config
+ description: A comma-separated list of regions to get stories from the recommendations BFF. Also requires region-stories-config.
+ regionStoriesBlock:
+ description: A comma-separated list of regions that do not get stories, regardless of locale-list-config.
+ type: string
+ fallbackPref: >-
+ browser.newtabpage.activity-stream.discoverystream.region-stories-block
+ localeListConfig:
+ description: A comma-separated list of locales that get stories, regardless of region-stories-config.
+ type: string
+ fallbackPref: >-
+ browser.newtabpage.activity-stream.discoverystream.locale-list-config
+ regionSpocsConfig:
+ description: A comma-separated list of regions that get spocs by default.
+ type: string
+ fallbackPref: >-
+ browser.newtabpage.activity-stream.discoverystream.region-spocs-config
+ topSitesMaxSponsored:
+ # Defined under `pocketNewtab` as it needs to be used along with other variables
+ type: int
+ description: The maximum number of sponsored Top Sites to be displayed
+ topSitesContileMaxSponsored:
+ # Defined under `pocketNewtab` as it needs to be used along with other variables
+ type: int
+ description: The maximum number of sponsored Top Sites used from Contile
+ topSitesContileSovEnabled:
+ # Defined under `pocketNewtab` as it needs to be used along with other variables
+ description: Enable the Share-of-Voice feature for Sponsored Topsites.
+ type: boolean
+ fallbackPref: >-
+ browser.topsites.contile.sov.enabled
+
+saveToPocket:
+ description: The save to Pocket feature
+ owner: sdowne@getpocket.com
+ hasExposure: false
+ isEarlyStartup: true
+ variables:
+ emailButton:
+ type: boolean
+ fallbackPref: extensions.pocket.refresh.emailButton.enabled
+ description: Just for the new Pocket panels, enables the email signup button.
+ hideRecentSaves:
+ type: boolean
+ fallbackPref: extensions.pocket.refresh.hideRecentSaves.enabled
+ description: Hides the recently saved section in the home panel.
+ bffRecentSaves:
+ type: boolean
+ fallbackPref: "extensions.pocket.bffRecentSaves"
+ description: Use the new BFF Proxy Service instead of the legacy Pocket Service for Recent Saves
+ bffApi:
+ type: string
+ fallbackPref: "extensions.pocket.bffApi"
+ description: BFF Proxy Service domain
+ oAuthConsumerKeyBff:
+ type: string
+ fallbackPref: "extensions.pocket.oAuthConsumerKeyBff"
+ description: BFF Proxy Service OAuth Consumer Key
+
+password-autocomplete:
+ description: A special autocomplete UI for password fields.
+ owner: sgalich@mozilla.com
+ hasExposure: false
+ variables:
+ directMigrateSingleProfile:
+ type: boolean
+ description: Enable direct migration?
+
+shellService:
+ description: "Interface with OS, e.g., pinning and set default"
+ owner: desktop-integrations@mozilla.com
+ hasExposure: false
+ isEarlyStartup: true
+ variables:
+ disablePin:
+ type: boolean
+ description: Disable pin to taskbar feature
+ setDefaultBrowserUserChoice:
+ type: boolean
+ fallbackPref: browser.shell.setDefaultBrowserUserChoice
+ description: Should it set as default browser
+ setDefaultPDFHandler:
+ type: boolean
+ fallbackPref: browser.shell.setDefaultPDFHandler
+ description: Should setting it as the default browser set it as the default PDF handler.
+ setDefaultPDFHandlerOnlyReplaceBrowsers:
+ type: boolean
+ fallbackPref: browser.shell.setDefaultPDFHandler.onlyReplaceBrowsers
+ description: >-
+ Should setting it as the default PDF handler only replace existing PDF
+ handlers that are browsers, and not other PDF handlers such as Acrobat
+ Reader or Nitro PDF.
+
+upgradeDialog:
+ description: The dialog shown for major upgrades
+ owner: omc@mozilla.com
+ hasExposure: false
+ isEarlyStartup: true
+ variables:
+ enabled:
+ type: boolean
+ fallbackPref: browser.startup.upgradeDialog.enabled
+ description: Is the feature enabled?
+
+readerMode:
+ description: Firefox Reader Mode
+ owner: sdowne@getpocket.com
+ hasExposure: false
+ isEarlyStartup: true
+ variables:
+ pocketCTAVersion:
+ type: string
+ fallbackPref: reader.pocket.ctaVersion
+ description: >-
+ What version of Pocket CTA to show in Reader Mode (Empty string is no
+ CTA)
+cfr:
+ description: "A Firefox Messaging System message for the cfr message channel"
+ owner: omc@mozilla.com
+ hasExposure: true
+ exposureDescription: "Exposure is sent if the message is about to be shown after trigger and targeting conditions on the message matched."
+ isEarlyStartup: false
+ schema:
+ uri: "resource://activity-stream/schemas/MessagingExperiment.schema.json"
+ path: "browser/components/newtab/content-src/asrouter/schemas/MessagingExperiment.schema.json"
+ variables: {}
+
+"moments-page":
+ description: "A Firefox Messaging System message for the moments-page message channel"
+ owner: omc@mozilla.com
+ hasExposure: true
+ exposureDescription: >-
+ "Exposure is sent if the message is about to be shown after trigger and targeting conditions on the message matched."
+ isEarlyStartup: false
+ schema:
+ uri: "resource://activity-stream/schemas/MessagingExperiment.schema.json"
+ path: "browser/components/newtab/content-src/asrouter/schemas/MessagingExperiment.schema.json"
+ variables: {}
+
+infobar:
+ description: "A Firefox Messaging system message for the infobar message channel"
+ owner: omc@mozilla.com
+ hasExposure: true
+ exposureDescription: >-
+ "Exposure is sent if the message is about to be shown after trigger and targeting conditions on the message matched."
+ isEarlyStartup: false
+ schema:
+ uri: "resource://activity-stream/schemas/MessagingExperiment.schema.json"
+ path: "browser/components/newtab/content-src/asrouter/schemas/MessagingExperiment.schema.json"
+ variables: {}
+
+spotlight:
+ description: "A Firefox Messaging System message for the spotlight message channel"
+ owner: omc@mozilla.com
+ hasExposure: true
+ exposureDescription: >-
+ "Exposure is sent if the message is about to be shown after trigger and targeting conditions on the message matched."
+ isEarlyStartup: false
+ schema:
+ uri: "resource://activity-stream/schemas/MessagingExperiment.schema.json"
+ path: "browser/components/newtab/content-src/asrouter/schemas/MessagingExperiment.schema.json"
+ variables: {}
+
+# More info about the fx-message-* feature id prototype is available at:
+# https://docs.google.com/document/d/1KdtaNycZL5j240nXofbibm9yKh7qVvu1-uZFLdmYM7Y/
+#
+# Before each Nightly leaves the station for Beta, we're currently
+# experimenting with ensuring that we have enough fx-messages-* messages to
+# accomodate all the rollout possibilities for Release that we're aware of,
+# plus one for a buffer just-in-case.
+#
+# When adding an fxms-message-* feature id, be sure to also add it to the
+# MESSAGING_EXPERIMENTS_DEFAULT_FEATURES list in ASRouter.
+
+# currently in use by 107+ exp/rollout pair of Import Bookmarks Infrequent
+# Existing Users with 5 bookmarks:
+# https://experimenter.services.mozilla.com/nimbus/import-infrequent-rollout-make-yourself-at-home/summary
+fxms-message-1:
+ description: "A Firefox Messaging System message"
+ owner: omc@mozilla.com
+ hasExposure: true
+ exposureDescription: >-
+ "Exposure is sent if the message is about to be shown after trigger and targeting conditions on the message matched."
+ isEarlyStartup: false
+ schema:
+ uri: "resource://activity-stream/schemas/MessagingExperiment.schema.json"
+ path: "browser/components/newtab/content-src/asrouter/schemas/MessagingExperiment.schema.json"
+ variables: {}
+
+# next planned use: 110+ exp/rollout pair of Fox Doodle: Pin experiment winner
+# (Existing Users)
+# More info about the fx-message-* feature id prototype is available at:
+# https://docs.google.com/document/d/1KdtaNycZL5j240nXofbibm9yKh7qVvu1-uZFLdmYM7Y/
+fxms-message-2:
+ description: "Firefox Messaging System message 2"
+ owner: omc@mozilla.com
+ hasExposure: true
+ exposureDescription: >-
+ "Exposure is sent if the message is about to be shown after trigger and targeting conditions on the message matched."
+ isEarlyStartup: false
+ schema:
+ uri: "resource://activity-stream/schemas/MessagingExperiment.schema.json"
+ path: "browser/components/newtab/content-src/asrouter/schemas/MessagingExperiment.schema.json"
+ variables: {}
+
+# next planned use: 110+ exp/rollout pair of Fox Doodle: Set Default (Existing
+# Users)
+# More info about the fx-message-* feature id prototype is available at:
+# https://docs.google.com/document/d/1KdtaNycZL5j240nXofbibm9yKh7qVvu1-uZFLdmYM7Y/
+fxms-message-3:
+ description: "Firefox Messaging System message 3"
+ owner: omc@mozilla.com
+ hasExposure: true
+ exposureDescription: >-
+ "Exposure is sent if the message is about to be shown after trigger and targeting conditions on the message matched."
+ isEarlyStartup: false
+ schema:
+ uri: "resource://activity-stream/schemas/MessagingExperiment.schema.json"
+ path: "browser/components/newtab/content-src/asrouter/schemas/MessagingExperiment.schema.json"
+ variables: {}
+
+# next potential planned use: 111+ exp/rollout pair for PDF annotations callout
+# (https://mozilla-hub.atlassian.net/browse/FXE-83) experiment.
+#
+# More info about the fx-message-* feature id prototype is available at:
+# https://docs.google.com/document/d/1KdtaNycZL5j240nXofbibm9yKh7qVvu1-uZFLdmYM7Y/
+fxms-message-4:
+ description: "Firefox Messaging System message 4"
+ owner: omc@mozilla.com
+ hasExposure: true
+ exposureDescription: >-
+ "Exposure is sent if the message is about to be shown after trigger and targeting conditions on the message matched."
+ isEarlyStartup: false
+ schema:
+ uri: "resource://activity-stream/schemas/MessagingExperiment.schema.json"
+ path: "browser/components/newtab/content-src/asrouter/schemas/MessagingExperiment.schema.json"
+ variables: {}
+
+# next potential planned use: 112+ holdback/rollout pair for default PDF handler
+# (https://mozilla-hub.atlassian.net/browse/FXE-91) experiment.
+#
+# More info about the fx-message-* feature id prototype is available at:
+# https://docs.google.com/document/d/1KdtaNycZL5j240nXofbibm9yKh7qVvu1-uZFLdmYM7Y/
+fxms-message-5:
+ description: "Firefox Messaging System message 5"
+ owner: omc@mozilla.com
+ hasExposure: true
+ exposureDescription: >-
+ "Exposure is sent if the message is about to be shown after trigger and targeting conditions on the message matched."
+ isEarlyStartup: false
+ schema:
+ uri: "resource://activity-stream/schemas/MessagingExperiment.schema.json"
+ path: "browser/components/newtab/content-src/asrouter/schemas/MessagingExperiment.schema.json"
+ variables: {}
+
+# next potential planned use: 114+ possible holdback/rollout pair (Device Migration):
+# https://mozilla-hub.atlassian.net/browse/FXE-271
+#
+# More info about the fx-message-* feature id prototype is available at:
+# https://docs.google.com/document/d/1KdtaNycZL5j240nXofbibm9yKh7qVvu1-uZFLdmYM7Y/
+fxms-message-6:
+ description: "Firefox Messaging System message 6"
+ owner: omc@mozilla.com
+ hasExposure: true
+ exposureDescription: >-
+ "Exposure is sent if the message is about to be shown after trigger and targeting conditions on the message matched."
+ isEarlyStartup: false
+ schema:
+ uri: "resource://activity-stream/schemas/MessagingExperiment.schema.json"
+ path: "browser/components/newtab/content-src/asrouter/schemas/MessagingExperiment.schema.json"
+ variables: {}
+
+# next planned use: buffer, for the unexpected
+#
+# More info about the fx-message-* feature id prototype is available at:
+# https://docs.google.com/document/d/1KdtaNycZL5j240nXofbibm9yKh7qVvu1-uZFLdmYM7Y/
+fxms-message-7:
+ description: "Firefox Messaging System message 7"
+ owner: omc@mozilla.com
+ hasExposure: true
+ exposureDescription: >-
+ "Exposure is sent if the message is about to be shown after trigger and targeting conditions on the message matched."
+ isEarlyStartup: false
+ schema:
+ uri: "resource://activity-stream/schemas/MessagingExperiment.schema.json"
+ path: "browser/components/newtab/content-src/asrouter/schemas/MessagingExperiment.schema.json"
+ variables: {}
+
+
+# next planned use: buffer, for the unexpected
+#
+# More info about the fx-message-* feature id prototype is available at:
+# https://docs.google.com/document/d/1KdtaNycZL5j240nXofbibm9yKh7qVvu1-uZFLdmYM7Y/
+fxms-message-8:
+ description: "Firefox Messaging System message 8"
+ owner: omc@mozilla.com
+ hasExposure: true
+ exposureDescription: >-
+ "Exposure is sent if the message is about to be shown after trigger and targeting conditions on the message matched."
+ isEarlyStartup: false
+ schema:
+ uri: "resource://activity-stream/schemas/MessagingExperiment.schema.json"
+ path: "browser/components/newtab/content-src/asrouter/schemas/MessagingExperiment.schema.json"
+ variables: {}
+
+# next planned use: buffer, for the unexpected
+#
+# More info about the fx-message-* feature id prototype is available at:
+# https://docs.google.com/document/d/1KdtaNycZL5j240nXofbibm9yKh7qVvu1-uZFLdmYM7Y/
+fxms-message-9:
+ description: "Firefox Messaging System message 9"
+ owner: omc@mozilla.com
+ hasExposure: true
+ exposureDescription: >-
+ "Exposure is sent if the message is about to be shown after trigger and targeting conditions on the message matched."
+ isEarlyStartup: false
+ schema:
+ uri: "resource://activity-stream/schemas/MessagingExperiment.schema.json"
+ path: "browser/components/newtab/content-src/asrouter/schemas/MessagingExperiment.schema.json"
+ variables: {}
+
+# next planned use: buffer, for the unexpected
+#
+# More info about the fx-message-* feature id prototype is available at:
+# https://docs.google.com/document/d/1KdtaNycZL5j240nXofbibm9yKh7qVvu1-uZFLdmYM7Y/
+fxms-message-10:
+ description: "Firefox Messaging System message 10"
+ owner: omc@mozilla.com
+ hasExposure: true
+ exposureDescription: >-
+ "Exposure is sent if the message is about to be shown after trigger and targeting conditions on the message matched."
+ isEarlyStartup: false
+ schema:
+ uri: "resource://activity-stream/schemas/MessagingExperiment.schema.json"
+ path: "browser/components/newtab/content-src/asrouter/schemas/MessagingExperiment.schema.json"
+ variables: {}
+
+# next planned use: buffer, for the unexpected
+#
+# More info about the fx-message-* feature id prototype is available at:
+# https://docs.google.com/document/d/1KdtaNycZL5j240nXofbibm9yKh7qVvu1-uZFLdmYM7Y/
+fxms-message-11:
+ description: "Firefox Messaging System message 11"
+ owner: omc@mozilla.com
+ hasExposure: true
+ exposureDescription: >-
+ "Exposure is sent if the message is about to be shown after trigger and targeting conditions on the message matched."
+ isEarlyStartup: false
+ schema:
+ uri: "resource://activity-stream/schemas/MessagingExperiment.schema.json"
+ path: "browser/components/newtab/content-src/asrouter/schemas/MessagingExperiment.schema.json"
+ variables: {}
+
+pbNewtab:
+ description: "A Firefox Messaging System message for the pbNewtab message channel"
+ owner: omc@mozilla.com
+ hasExposure: true
+ exposureDescription: >-
+ Exposure is sent if the message is about to be shown after trigger and targeting conditions on the message matched.
+ isEarlyStartup: false
+ schema:
+ uri: "resource://activity-stream/schemas/MessagingExperiment.schema.json"
+ path: "browser/components/newtab/content-src/asrouter/schemas/MessagingExperiment.schema.json"
+ variables: {}
+
+backgroundTaskMessage:
+ description: "A Firefox Messaging System message for the background task message channel"
+ owner: nalexander@mozilla.com
+ applications:
+ - firefox-desktop-background-task
+ hasExposure: true
+ exposureDescription: >-
+ Exposure is sent if the message is about to be shown after trigger and targeting conditions on the message matched.
+ isEarlyStartup: false
+ schema:
+ uri: "resource://activity-stream/schemas/BackgroundTaskMessagingExperiment.schema.json"
+ path: "browser/components/newtab/content-src/asrouter/schemas/BackgroundTaskMessagingExperiment.schema.json"
+ variables: {}
+
+pictureinpicture:
+ description: Message for first time Picture-in-Picture users
+ owner: nbaumgardner@mozilla.com
+ hasExposure: true
+ exposureDescription: Exposure is sent when a user hovers over a video and Picture-in-Picture has not been used before
+ variables:
+ title:
+ type: string
+ description: The title to be used for the PiP toggle
+ message:
+ type: string
+ description: The message to be used in the PiP toggle
+ showIconOnly:
+ type: boolean
+ description: Whether to show the first time PiP toggle or show the PiP icon only
+ oldToggle:
+ type: boolean
+ description: Whether to show the control style (true) or variant style (false) for the first time PiP toggle
+ displayDuration:
+ type: int
+ description: Duration of PiP first time toggle display in days before switching to PiP icon toggle
+
+glean:
+ description: "The Glean data collection SDK within Firefox Desktop"
+ owner: glean-team@mozilla.com
+ hasExposure: false
+ variables:
+ finalInactive:
+ type: "boolean"
+ description: "Enables FOG early shutdown pings when true"
+ newtabPingEnabled:
+ type: "boolean"
+ fallbackPref: "browser.newtabpage.ping.enabled"
+ description: "Whether to submit the 'newtab' ping"
+ gleanMetricConfiguration:
+ type: json
+ description: >-
+ "A map of metric base-identifiers to booleans representing the state of the 'disabled' flag for that metric"
+
+majorRelease2022:
+ description: Major Release 2022
+ owner: firefoxview@mozilla.com
+ hasExposure: false
+ isEarlyStartup: true
+ variables:
+ feltPrivacyPBMDarkTheme:
+ type: boolean
+ fallbackPref: "browser.theme.dark-private-windows"
+ description: "Use dark theme variant for PBM windows. This is only supported if the theme sets darkTheme data."
+ feltPrivacyPBMNewIndicator:
+ type: boolean
+ fallbackPref: "browser.privatebrowsing.enable-new-indicator"
+ description: "Enables the new private browsing indicator."
+ feltPrivacyPBMNewLogo:
+ type: boolean
+ fallbackPref: "browser.privatebrowsing.enable-new-logo"
+ description: "Enables the new about:privatebrowsing logo."
+ feltPrivacyShowPreferencesSection:
+ type: boolean
+ fallbackPref: "browser.privacySegmentation.preferences.show"
+ description: "Controls visibility of the privacy segmentation preferences section."
+ feltPrivacyWindowSeparation:
+ type: boolean
+ fallbackPref: "browser.privateWindowSeparation.enabled"
+ description: "Whether or not private browsing windows use a separate icon in the Windows taskbar"
+ colorwayCloset:
+ type: boolean
+ fallbackPref: "browser.theme.colorway-closet"
+ description: "Whether or not to show the colorway closet modal"
+ firefoxView:
+ type: boolean
+ fallbackPref: "browser.tabs.firefox-view"
+ description: "Whether or not to show the firefox view tab"
+ onboarding:
+ type: boolean
+ fallbackPref: "browser.majorrelease.onboarding"
+ description: "Whether or not to use the MR2022 onboarding settings."
+
+featureCallout:
+ description: "Prefs that control users' progress through Feature Callout tours"
+ owner: omc@mozilla.com
+ hasExposure: false
+ isEarlyStartup: false
+ variables:
+ pdfJsTourProgress:
+ description: A JSON String representing the intitial state of the pref that holds the progress of the PDF.js feature tour.
+ type: string
+ setPref: "browser.pdfjs.feature-tour"
+browserLowMemoryPrefs:
+ description: Prefs which control the browser's behaviour under low memory.
+ owner: haftandilian@mozilla.com
+ hasExposure: false
+ variables:
+ lowMemoryResponseMask:
+ description: Control the response on macOS when under memory pressure.
+ type: int
+ setPref: "browser.lowMemoryResponseMask"
+ lowMemoryResponseOnWarn:
+ description: Controls which macOS memory-pressure levels trigger the browser low memory response.
+ type: boolean
+ setPref: "browser.lowMemoryResponseOnWarn"
+ tabsUnloadOnLowMemory:
+ description: Whether to unload tabs when available memory is running low.
+ type: boolean
+ setPref: "browser.tabs.unloadOnLowMemory"
+
+scriptLoaderPrefs:
+ description: Prefs that control the script loader.
+ owner: npierron@mozilla.com
+ hasExposure: false
+ variables:
+ delazificationStrategy:
+ description: >-
+ Selects which parsing/delazification strategy should be used while
+ parsing scripts off-main-thread. See DelazificationOption in
+ CompileOptions.h for values.
+ type: int
+ setPref: "dom.script_loader.delazification.strategy"
+
+echPrefs:
+ description: Prefs that control Encrypted Client Hello.
+ owner: djackson@mozilla.com
+ hasExposure: false
+ variables:
+ tlsEnabled:
+ description: Whether to enable ECH for connections using TLS
+ type: boolean
+ setPref: "network.dns.echconfig.enabled"
+ h3Enabled:
+ description: Whether to enable ECH for connections using H3/QUIC
+ type: boolean
+ setPref: "network.dns.http3_echconfig.enabled"
+ forceWaitHttpsRR:
+ description: Whether to force waiting for HTTPS DNS records, which ECH requires.
+ type: boolean
+ setPref: "network.dns.force_waiting_https_rr"
+ insecureFallback:
+ description: Whether to fallback to non-ECH connections if all ECH RRs fail.
+ type: boolean
+ setPref: "network.dns.echconfig.fallback_to_origin_when_all_failed"
+ tlsGreaseProb:
+ description: Probability of GREASEing a TLS connection with ECH (0-100).
+ type: int
+ setPref: "security.tls.ech.grease_probability"
+ h3GreaseEnabled:
+ description: Whether to apply GREASE settings to H3/QUIC connections.
+ type: boolean
+ setPref: "security.tls.ech.grease_http3"
+ disableGreaseOnFallback:
+ description: Whether to disable GREASE when retrying a connection.
+ type: boolean
+ setPref: "security.tls.ech.disable_grease_on_fallback"
+ greasePaddingSize:
+ description: Assumed echConfig padding length for GREASE extensions (1-255).
+ type: int
+ setPref: "security.tls.ech.grease_size"
+
+dohPrefs:
+ description: Prefs that control DNS over HTTPS.
+ owner: vgosu@mozilla.com
+ hasExposure: false
+ variables:
+ trrMode:
+ description: Has a value of 2 for TRR first, 3 for TRR only, 0 for off.
+ type: int
+ setPref: "network.trr.mode"
+ trrUri:
+ description: The URL of the DNS over HTTPS endpoint
+ type: string
+ setPref: "network.trr.uri"
+ dohMode:
+ description: Same as trrMode, but set by the DoHController module.
+ type: int
+ setPref: "doh-rollout.mode"
+ dohUri:
+ description: Same as trrUri, but set by the DoHController module.
+ type: string
+ setPref: "doh-rollout.uri"
+ enableFallbackWarningPage:
+ description: Whether DoH fallback warning page will be displayed when DoH doesn't work in TRR first mode.
+ type: boolean
+ setPref: "network.trr.display_fallback_warning"
+ showFallbackCheckbox:
+ description: Whether the checkbox to enable the fallback warning page is displayed in the settings UI.
+ type: boolean
+ setPref: "network.trr_ui.show_fallback_warning_option"
+
+dooh:
+ description: "DNS over Oblivious HTTP"
+ owner: vgosu@mozilla.com
+ hasExposure: false
+ variables:
+ ohttpEnabled:
+ description: Whether to use Oblivious HTTP for the resolution
+ type: boolean
+ setPref: "network.trr.use_ohttp"
+ ohttpRelayUri:
+ description: The URL of the Oblivious HTTP relay
+ type: string
+ setPref: "network.trr.ohttp.relay_uri"
+ ohttpConfigUri:
+ description: The URL used to fetch the configuration of the Oblivious HTTP gateway
+ type: string
+ setPref: "network.trr.ohttp.config_uri"
+ ohttpUri:
+ description: The URL of the Oblivious DNS over HTTPS target resource
+ type: string
+ setPref: "network.trr.ohttp.uri"
+
+networking:
+ description: "Firefox Networking (Necko)"
+ owner: vgosu@mozilla.com
+ hasExposure: false
+ variables:
+ ehPreloadEnabled:
+ description: Whether Early Hints preload is enabled
+ type: boolean
+ setPref: "network.early-hints.enabled"
+ ehPreconnectEnabled:
+ description: Whether Early Hints preconnect is enabled
+ type: boolean
+ setPref: "network.early-hints.preconnect.enabled"
+
+pingsender:
+ description: "In-product usage of the pingsender telemetry reporter."
+ owner: nalexander@mozilla.com
+ hasExposure: false
+ variables:
+ backgroundTaskEnabled:
+ type: "boolean"
+ fallbackPref: "toolkit.telemetry.shutdownPingSender.backgroundtask.enabled"
+ description: "Whether to use the `pingsender` background task to send shutdown telemetry"
+
+dapTelemetry:
+ description: DAP Telemetry
+ owner: simon@mozilla.com
+ hasExposure: false
+ isEarlyStartup: true # Data is sent on startup with a trigger in BrowserGlue.sys.mjs
+ variables:
+ enabled:
+ type: boolean
+ fallbackPref: toolkit.telemetry.dap_enabled
+ description: Whether to automatically send DAP measurements.
+ task1Enabled:
+ type: boolean
+ fallbackPref: toolkit.telemetry.dap_task1_enabled
+ description: Whether to send fake measurements for verification task 1.
+
+etpLevel2PBMPref:
+ description: The pref that controls the ETP level 2 list in the private browsing mode
+ owner: tihuang@mozilla.com
+ hasExposure: false
+ variables:
+ enabled:
+ description: Whether to enable ETP level 2 list in the private browsing mode.
+ type: boolean
+ setPref: "privacy.annotate_channels.strict_list.pbmode.enabled"
+
+fxaButtonVisibility:
+ description: Prefs to control the visibility of the Firefox Accounts toolbar button when not signed in.
+ owner: mconley@mozilla.com
+ hasExposure: false
+ isEarlyStartup: true
+ variables:
+ boolean:
+ description: True if the Firefox Accounts toolbar button should be visible when not signed in.
+ type: boolean
+ setPref: identity.fxaccounts.toolbar.defaultVisible
+
+legacyHeartbeat:
+ description: Normandy Heartbeat exposed to Nimbus
+ owner: barret@mozilla.com
+ hasExposure: false
+ schema:
+ uri: "resource://normandy/schemas/LegacyHeartbeat.schema.json"
+ path: "toolkit/components/normandy/schemas/LegacyHeartbeat.schema.json"
+ variables:
+ survey:
+ type: json
+ description: The Heartbeat survey parameters.
+
+queryStripping:
+ description: Query parameter stripping anti-tracking feature.
+ owner: pbz@mozilla.com
+ hasExposure: false
+ variables:
+ enabledNormalBrowsing:
+ type: boolean
+ setPref: privacy.query_stripping.enabled
+ description: Enables / disables URL query string stripping in normal browsing mode.
+ enabledPrivateBrowsing:
+ type: boolean
+ setPref: privacy.query_stripping.enabled.pbmode
+ description: Enables / disables URL query string stripping in private browsing mode.
+ allowList:
+ type: string
+ setPref: privacy.query_stripping.allow_list
+ description: >-
+ List of sites exempt from query stripping. This list will be merged with
+ records coming from RemoteSettings.
+ stripList:
+ type: string
+ setPref: privacy.query_stripping.strip_list
+ description: >-
+ List of query params to be stripped from URIs. This list will be merged
+ with records coming from RemoteSettings.
+
+fontvisibility:
+ description: Control Font Visibility in PBM
+ owner: tom@mozilla.com
+ hasExposure: false
+ variables:
+ enabledETP:
+ type: int
+ setPref: layout.css.font-visibility.trackingprotection
+ description: Set the Font Visibility level when Enhanced Tracking Protection is enabled
+ enabledStandard:
+ type: int
+ setPref: layout.css.font-visibility.standard
+ description: Set the Font Visibility level for normal browsing
+ enabledPBM:
+ type: int
+ setPref: layout.css.font-visibility.private
+ description: Set the Font Visibility level for private browsing (will override ETP)
+
+fingerprintingProtection:
+ description: Control Fingerprinting Protection
+ owner: tihuang@mozilla.com
+ hasExposure: false
+ variables:
+ enabledNormal:
+ type: boolean
+ setPref: privacy.fingerprintingProtection
+ description: Enables / disables fingerprinting protection in normal browsing mode.
+ enabledPrivate:
+ type: boolean
+ setPref: privacy.fingerprintingProtection.pbmode
+ description: Enables / disables fingerprinting protection in private browsing mode.
+ overrides:
+ type: string
+ setPref: privacy.fingerprintingProtection.overrides
+ description: >-
+ The protection overrides to add or remove fingerprinting protection
+ targets. Please check RFPTargets.inc for all supported targets.
+
+migrationWizard:
+ description: Prefs to control the Migration Wizard UI.
+ owner: mconley@mozilla.com
+ hasExposure: false
+ isEarlyStartup: true
+ variables:
+ useNewWizard:
+ description: True if the new migration wizard should be used.
+ type: boolean
+ setPref: browser.migrate.content-modal.enabled
+ showImportAll:
+ description: True if the "Variant 2" of the Migration Wizard browser / profile selection UI should be used. This is only meaningful in the new Migration Wizard.
+ type: boolean
+ setPref: browser.migrate.content-modal.import-all.enabled
+ showPreferencesEntrypoint:
+ description: True if an entrypoint to the migration wizard should be visible in about:preferences.
+ type: boolean
+ setPref: browser.migrate.preferences-entrypoint.enabled
+ aboutWelcomeBehavior:
+ description: >-
+ When migration is kicked off from about:welcome, there are
+ a few different behaviors that we want to test, controlled
+ by a preference that is instrumented for Nimbus. The pref
+ has the following possible states:
+
+ "autoclose":
+ The user will be directed to the migration wizard in
+ about:preferences, but once the wizard is dismissed,
+ the tab will close.
+
+ "embedded":
+ The migration wizard is embedded in about:welcome.
+
+ "standalone":
+ The migration wizard will open in a new top-level content
+ window.
+
+ "legacy":
+ The legacy wizard will be opened from about:welcome, even if
+ the new wizard is enabled by default.
+
+ "default" / other
+ The user will be directed to the migration wizard in
+ about:preferences. The tab will not close once the
+ user closes the wizard.
+ type: string
+ setPref: browser.migrate.content-modal.about-welcome-behavior
+
+mixedContentUpgrading:
+ description: Prefs to control whether we upgrade mixed passive content (images, audio, video) from http to https
+ owner: fbraun@mozilla.com
+ hasExposure: false
+ variables:
+ boolean:
+ description: True if the mixed content upgrading pref is enabled
+ type: boolean
+ setPref: security.mixed_content.upgrade_display_content
+
+jsParallelParsing:
+ description: Pref to toggle JS parallel parsing.
+ owner: dpalmeiro@mozilla.com, nbp@mozilla.com
+ isEarlyStartup: true
+ hasExposure: false
+ variables:
+ enabled:
+ description: True to enable parallel parsing.
+ type: boolean
+ setPref: "javascript.options.parallel_parsing"
+
+gcParallelMarking:
+ description: Pref to toggle parallel marking in the GC.
+ owner: dpalmeiro@mozilla.com, jonco@mozilla.com
+ isEarlyStartup: true
+ hasExposure: false
+ variables:
+ enabled:
+ description: True to enable parallel marking.
+ type: boolean
+ setPref: "javascript.options.mem.gc_parallel_marking"
+
+jitThresholds:
+ description: Prefs that control jit tier thresholds.
+ owner: dpalmeiro@mozilla.com, jdemooij@mozilla.com
+ isEarlyStartup: true
+ hasExposure: false
+ variables:
+ blinterp_threshold:
+ description: Set the threshold to enable blinterp compilation.
+ type: int
+ setPref: "javascript.options.blinterp.threshold"
+ baseline_threshold:
+ description: Set the threshold to enable baseline compilation.
+ type: int
+ setPref: "javascript.options.baselinejit.threshold"
+ ion_threshold:
+ description: Set the threshold to enable ion compilation.
+ type: int
+ setPref: "javascript.options.ion.threshold"
+ ion_bailout_threshold:
+ description: Set the ion frequent bailout threshold.
+ type: int
+ setPref: "javascript.options.ion.frequent_bailout_threshold"
+ ion_offthread_compilation:
+ description: True to enable offthread ion compilations.
+ type: boolean
+ setPref: "javascript.options.ion.offthread_compilation"
+ inlining_max_length:
+ description: Set the max bytecode length considered for inlining.
+ type: int
+ setPref: "javascript.options.inlining_bytecode_max_length"
+
+jitHintsCache:
+ description: Pref to toggle the JIT hints cache.
+ owner: dpalmeiro@mozilla.com
+ isEarlyStartup: true
+ hasExposure: false
+ variables:
+ enabled:
+ description: True to enable the hints cache.
+ type: boolean
+ setPref: "javascript.options.jithints"
+
+raceCacheWithNetwork:
+ description: Prefs to toggle the race cache with network.
+ owner: dpalmeiro@mozilla.com, acreskey@mozilla.com
+ hasExposure: false
+ variables:
+ enabled:
+ description: True to enable the rcwn feature.
+ type: boolean
+ setPref: "network.http.rcwn.enabled"
+
+httpSpeculativeParallelLimit:
+ description: Prefs to control the http speculative parallel limit.
+ owner: dpalmeiro@mozilla.com, acreskey@mozilla.com
+ hasExposure: false
+ variables:
+ speculative_parallel_limit:
+ description: Maximum number of parallel speculative connections.
+ type: int
+ setPref: "network.http.speculative-parallel-limit"
+
+deviceMigration:
+ description: Prefs to control aspects of the new device migration experiment
+ owner: hjones@mozilla.com
+ hasExposure: false
+ isEarlyStartup: true
+ variables:
+ helpMenuHidden:
+ description: True if new help menu item should be hidden
+ type: boolean
+ fallbackPref: browser.device-migration.help-menu.hidden
+
+opaqueResponseBlocking:
+ description: Prefs to enable Opaque Response Blocking
+ owner: farre@mozilla.com
+ isEarlyStartup: true
+ hasExposure: true
+ exposureDescription: Exposure is sent when a response is blocked
+ variables:
+ enabled:
+ description: Whether ORB is enabled
+ type: boolean
+ setPref: "browser.opaqueResponseBlocking"
+ javascriptValidator:
+ description: Whether JavaScript validation for ORB is enabled
+ type: boolean
+ setPref: "browser.opaqueResponseBlocking.javascriptValidator"
+ filterFetchResponse:
+ description: Whether filtering of internal responses in the parent ORB is enabled
+ type: int
+ setPref: "browser.opaqueResponseBlocking.filterFetchResponse"
+ mediaExceptionsStrategy:
+ description: >-
+ If we partially or wholly allow audio and video MIME types in conflict with spec.
+ type: int
+ setPref: "browser.opaqueResponseBlocking.mediaExceptionsStrategy" \ No newline at end of file