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Impressum FeatureManifest.yaml Sprache: unbekannt |
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Spracherkennung für: .yaml vermutete Sprache: Unknown {[0] [0] [0]} [Methode: Schwerpunktbildung, einfache Gewichte, sechs Dimensionen] # This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this # file, You can obtain one at http://mozilla.org/MPL/2.0/. # yaml-language-server: $schema=schemas/ExperimentFeatureManifest.schema.json # 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: beth@mozilla.com applications: - firefox-desktop - firefox-desktop-background-task hasExposure: false variables: {} testFeature: description: Test only feature owner: beth@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: branch: user pref: 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: beth@mozilla.com hasExposure: false variables: value: type: string setPref: branch: default pref: 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: beth@mozilla.com hasExposure: false variables: value: type: string setPref: branch: user pref: nimbus.qa.pref-2 description: The value to set for the pref. # Note: this feature is not for general use. If you want to run an experiment # that sets prefs, you *must* register your feature in this manifest and specify # the prefs you will control. prefFlips: description: Flip arbitrary prefs. Controlled by release management. owner: beth@mozilla.com hasExposure: false variables: prefs: type: json description: "The prefs to set." schema: uri: resource://nimbus/schemas/PrefFlipsFeature.schema.json path: toolkit/components/nimbus/schemas/PrefFlipsFeature.schema.json search: description: Search service related features. owner: search-and-suggest-program@mozilla.com hasExposure: false variables: scotchBonnetEnableOverride: type: boolean setPref: branch: default pref: browser.urlbar.scotchBonnet.enableOverride description: >- Whether or not enabling scotch bonnet feature. If this variable is true, the following features are available as default. * Unified search button * Secondary action buttons * Search term persistence * Intuitive search keywords * HTTP swap trendingRequireSearchMode: type: boolean setPref: branch: default pref: browser.urlbar.trending.requireSearchMode description: Controls whether trending suggestions are only shown in search mode or not. trendingMaxResultsNoSearchMode: type: int setPref: branch: default pref: browser.urlbar.trending.maxResultsNoSearchMode description: The maximum number of trending results mode outside search mode. targetExperiment: type: string description: >- Recorded in SERP telemetry, this is the slug of the experiment someone is requesting enrollment and branch information for. (Note that the featureId needs to be set to "search".) searchConfiguration: description: >- Search experimentation support for the engine configuration. Some of these options may cause an additional reload to occur during the startup phase. owner: search-and-suggest-program@mozilla.com hasExposure: false variables: experiment: type: string setPref: branch: user pref: browser.search.experiment description: >- Used to activate only matching configurations that contain the value in `experiment` 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: "params": [ { "name": "channel", "experimentConfig": "google_channel_row" } ], 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. If the parameter is in the search configuration, but there is no experiment, or the experiment does not set a value, then the parameter will not be included in the search url. Only the search team can update the configuration. separatePrivateDefaultUIEnabled: type: boolean setPref: branch: user pref: browser.search.separatePrivateDefault.ui.enabled description: Whether the UI for the separate private default feature is enabled. separatePrivateDefaultUrlbarResultEnabled: type: boolean setPref: branch: user pref: browser.search.separatePrivateDefault.urlbarResult.enabled 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: actionsOnboardingTimesToShow: type: int fallbackPref: browser.urlbar.quickactions.timesToShowOnboardingLabel description: >- The number of times a user should be shown the actions onboarding label. 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. ampMatchingStrategy: type: int fallbackPref: browser.urlbar.quicksuggest.ampMatchingStrategy description: >- The matching strategy for AMP suggestions. Leave undefined or set to zero to use the usual default exact-keyword strategy. Otherwise set to an integer value defined on `AmpMatchingStrategy` in `RustSuggest.sys.mjs` (corresponding to the `AmpMatchingStrategy` enum in the Rust component coerced to a 1-based integer value). 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 auto autoFillAdaptiveHistoryUseCountThreshold: type: string description: This value assumes float expression like "0.47". Threshold for use count of inpu fakespotFeatureGate: type: boolean fallbackPref: browser.urlbar.fakespot.featureGate description: >- Feature gate that controls whether all aspects of the Fakespot suggestion feature are exposed to the user. fakespotMinKeywordLength: type: int description: >- The minimum prefix length of a Fakespot keyword the user must type to trigger the suggestion. fakespotShowLessFrequentlyCap: type: int fallbackPref: browser.urlbar.fakespot.showLessFrequentlyCap 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 Fakespot suggestions. If undefined or zero, the user will be able to click the command without any limit. fakespotSuggestedIndex: type: int fallbackPref: browser.urlbar.fakespot.suggestedIndex description: >- The index of Fakespot results within the Firefox Suggest section. A negative index is relative to the end of the section. keywordExposureResults: type: string setPref: pref: browser.urlbar.keywordExposureResults branch: user description: >- Comma-separated list of result types that should trigger keyword-exposure telemetry. Keyword exposures can be recorded along with result exposures. To enable keyword exposures for a result type, you must add it both to this variable and to `exposureResults`. The only exception is the "rust_exposure" result type, which can be added to this variable even if it's not in `exposureResults` since it's enabled by setting the `quickSuggestExposureSuggestionTypes` variable. Keyword exposures are recorded in the `urlbar-keyword-exposure` ping. See that ping's description for more. mdnFeatureGate: type: boolean setPref: branch: default pref: browser.urlbar.mdn.featureGate description: >- Feature gate that controls whether all aspects of the mdn suggestion feature are exposed to the user. 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. merinoEndpointURL: type: string fallbackPref: browser.urlbar.merino.endpointURL description: >- The Merino endpoint URL, not including parameters. An empty string will cause Firefox not to fetch from Merino. 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: pref: browser.urlbar.exposureResults branch: user description: >- Comma-separated list of result types that should trigger exposure telemetry, which is recorded in the `exposure` event. By default exposure results are visible like usual, but they can be hidden by setting the `showExposureResults` variable to false. To also record keyword exposures for a result type, include it in the `keywordExposureResults` variable as well. showExposureResults: type: boolean setPref: pref: browser.urlbar.showExposureResults branch: user description: >- Boolean used to determine if the results defined in `exposureResults` should be shown in searc pocketFeatureGate: type: boolean fallbackPref: browser.urlbar.pocket.featureGate description: >- Feature gate that controls whether all aspects of the Pocket suggestions feature are exposed to the user. pocketShowLessFrequentlyCap: 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 Pocket suggestions. If undefined or zero, the user will be able to click the command without any limit. pocketSuggestIndex: type: int description: >- The group-relative suggestedIndex of Pocket suggestions within the Firefox Suggest section. quickSuggestAllowPositionInSuggestions: type: boolean fallbackPref: browser.urlbar.quicksuggest.allowPositionInSuggestions description: Whether quick suggest results can be shown in position specified in the suggesti quickSuggestAmpTopPickCharThreshold: type: int fallbackPref: browser.urlbar.quicksuggest.ampTopPickCharThreshold description: >- Character-count threshold (inclusive) for showing AMP suggestions as top picks. If an AMP suggestion is triggered by a keyword at least this many characters long, it will be shown as a top pick. When this variable is set, full keywords will also show AMP suggestions as top picks even if they have fewer characters than this threshold. quickSuggestContextualOptInEnabled: type: boolean setPref: branch: default pref: browser.urlbar.quicksuggest.contextualOptIn description: Whether the Firefox Suggest contextual opt-in result is enabled. If true, this i quickSuggestContextualOptInSayHello: type: boolean setPref: branch: default pref: browser.urlbar.quicksuggest.contextualOptIn.sayHello description: Controls which variant of the copy is used for the Firefox Suggest contextual opt quickSuggestContextualOptInTopPosition: type: boolean setPref: branch: default pref: browser.urlbar.quicksuggest.contextualOptIn.topPosition description: Controls whether the Firefox Suggest contextual opt-in result appears at the to quickSuggestDataCollectionEnabled: type: boolean description: Whether data collection should be enabled by default. If this variable is specif quickSuggestEnabled: type: boolean fallbackPref: browser.urlbar.quicksuggest.enabled description: Gate for the Firefox Suggest feature as a whole. If false, the Firefox Suggest pre quickSuggestExposureSuggestionTypes: type: string setPref: pref: browser.urlbar.quicksuggest.exposureSuggestionTypes branch: user description: >- Comma-separated list of Suggest exposure suggestion types to enable. Exposure suggestions are used to test potential exposures. They trigger exposure telemetry based on a set of keywords you provide but they are never visible. Set this variable to the `suggestion_type` defined in the remote settings record(s) that contains your keywords. If you want to test multiple suggestion types, separate them with commas, but also consider using one experiment branch per type, especially if you are also enabling keyword exposures. Exposure suggestions are recorded in telemetry with the "rust_exposure" result type. It's not necessary to include "rust_exposure" in `exposureResults`. Unless you are testing other results in the same experiment branch, it's also not necessary to set `showExposureResults: false`. To also record keyword exposures, include "rust_exposure" in `keywordExposureResults`. quickSuggestHideSettingsUI: type: boolean fallbackPref: browser.urlbar.quicksuggest.hideSettingsUI description: >- This variable is intended to be used in potential exposure experiments in regions and locales where Suggest normally isn't enabled. Potential exposure suggestions are implemented in Suggest, and this variable lets us enable core Suggest functionality but keep it hidden. Set both `quickSuggestEnabled` and `quickSuggestHideSettingsUI` to true, along with `quickSuggestExposureSuggestionTypes`. This variable does NOT hide visible suggestions and other UI that can be independently enabled with other Nimbus variables. But since all visible suggestions are disabled by default for users not in the Suggest population, as long as you don't set any Nimbus variables to enable other suggestions and UI, Suggest will remain hidden. quickSuggestImpressionCapsSponsoredEnabled: type: boolean fallbackPref: browser.urlbar.quicksuggest.impressionCaps.sponsoredEnabled description: Whether sponsored suggestions are subject to impression frequency caps. If fal quickSuggestImpressionCapsNonSponsoredEnabled: type: boolean fallbackPref: browser.urlbar.quicksuggest.impressionCaps.nonSponsoredEnabled description: Whether non-sponsored suggestions are subject to impression frequency caps. I quickSuggestMlEnabled: type: boolean fallbackPref: browser.urlbar.quicksuggest.mlEnabled description: >- Whether Suggest will use the ML backend in addition to Rust. quickSuggestNonSponsoredEnabled: type: boolean description: Whether non-sponsored suggestions should be enabled by default. If this variab 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 ins quickSuggestRankingMode: type: string fallbackPref: browser.urlbar.quicksuggest.rankingMode description: >- Specify the ranking mode for QuickSuggest. - "default": ranking by static scores specified by individual providers. - "interest": ranking by relevance scores provided by `ContentRelevancyManager`. - "random": ranking by randomly selecting a winner out of candidates. Note that this ranking mode can still be overridden by `quickSuggestScoreMap`. If the ranking mode is unspecified or set to any unknown values, it will default to the static score based ranking. enum: - default - interest - random quickSuggestScenario: # IMPORTANT: This should not have a fallbackPref. See UrlbarPrefs.sys.mjs. type: string description: The Firefox Suggest scenario in which the user is enrolled enum: - history - offline - online quickSuggestScoreMap: type: json description: >- A JSON object that maps telemetry result types to suggestion scores. If a telemetry result type is present in this map, the client will use the corresponding score as the score for all suggestions of the type, overriding all other sources of scores for the type. In other words, the scores in this map will override scores that are set in remote settings and Merino as well as scores that are hardcoded in the client. Example entries: `"amo": 0.5`, `"adm_sponsored": 0.9` 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 quickSuggestSponsoredIndex: type: int fallbackPref: browser.urlbar.quicksuggest.sponsoredIndex description: >- The index of sponsored Firefox Suggest results within the Firefox Suggest section when "Show search suggestions ahead of browsing history in address bar results" is checked. When not checked, the index is hardcoded as -1. Negative indexes are relative to the end of the section. quickSuggestSponsoredPriority: type: boolean fallbackPref: browser.urlbar.quicksuggest.sponsoredPriority description: >- Whether or not showing sponsored suggestion as priority. If this variable is true, the following things are processed. * "Sponsored" label is shown as the group label. * Change the suggested index to 1. * Handle as top pick. recentSearchesFeatureGate: type: boolean setPref: branch: default pref: browser.urlbar.recentsearches.featureGate description: Gate for the recent searches feature. recentSearchesMaxResults: type: int setPref: branch: default pref: browser.urlbar.recentsearches.maxResults description: The maximum number of recent searches to show. 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. 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. weatherShowLessFrequentlyCap: 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 weather suggestions. If undefined or zero, the user will be able to click the command without any limit. weatherUiTreatment: type: int fallbackPref: browser.urlbar.weather.uiTreatment description: >- The UI treatment to use for weather suggestions. Possible values: 0: (default) Simplest UI with current temperature and location 1: Simpler UI, adds current conditions, high/low, and URL 2: Full UI, adds forecast yelpMinKeywordLength: type: int description: >- The minimum prefix length of a Yelp keyword the user must type to trigger the suggestion. yelpMlEnabled: type: boolean fallbackPref: browser.urlbar.yelp.mlEnabled description: >- Whether Yelp suggestions will be served from the Suggest ML backend instead of Rust. yelpFeatureGate: type: boolean fallbackPref: browser.urlbar.yelp.featureGate description: >- Feature gate that controls whether all aspects of the Yelp suggestion feature are exposed to the user. yelpShowLessFrequentlyCap: type: int fallbackPref: browser.urlbar.yelp.showLessFrequentlyCap 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 Yelp suggestions. If undefined or zero, the user will be able to click the command without any limit. yelpSuggestNonPriorityIndex: type: int description: >- The group-relative suggestedIndex of Yelp suggestions within the Firefox Suggest section. Ignored when `yelpSuggestPriority` is true. yelpSuggestPriority: type: boolean fallbackPref: browser.urlbar.yelp.priority description: >- Whether or not showing yelp suggestion as priority. If this variable is true, the following things are processed. * Change the suggested index to 1. * Handle as top pick. 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: branch: user pref: "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: branch: user pref: "places.frecency.origins.alternative.daysCutOff" pagesAlternativeEnable: description: >- Use an alternative ranking algorithm for sorting history and bookmarks among the urlbar results. type: boolean setPref: branch: user pref: "places.frecency.pages.alternative.featureGate" pagesNumSampledVisits: description: >- The number of recent visits to sample when calculating the ranking of a page. Examining all the visits would be expensive, so we only sample recent visits. type: int setPref: branch: user pref: "places.frecency.pages.alternative.numSampledVisits" pagesHalfLifeDays: description: >- The number of days after which the ranking halves. This implements the "recency" part of the algorithm. type: int setPref: branch: user pref: "places.frecency.pages.alternative.halfLifeDays" pagesHighWeight: description: >- The weight to use for the high importance bucket. type: int setPref: branch: user pref: "places.frecency.pages.alternative.highWeight" pagesMediumWeight: description: >- The weight to use for the medium importance bucket. type: int setPref: branch: user pref: "places.frecency.pages.alternative.mediumWeight" pagesLowWeight: description: >- The weight to use for the low importance bucket. type: int setPref: branch: user pref: "places.frecency.pages.alternative.lowWeight" 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 backdrop: type: string fallbackPref: browser.aboutwelcome.backdrop description: >- Specify the color to be used to update the background color toolbarButtonEnabled: type: boolean setPref: branch: user pref: browser.aboutwelcome.toolbarButtonEnabled description: >- Should the return to about:welcome toolbar button be shown preonboarding: description: "A modal that shows on first startup, typically on top of about:welcome" owner: omc@mozilla.com # Exposure is recorded by the spotlight feature used to show the modal hasExposure: false # Needed at `sessionstore-windows-restored`. isEarlyStartup: true variables: enabled: type: boolean fallbackPref: browser.preonboarding.enabled description: >- Should users see the preonboarding modal? screens: type: json fallbackPref: browser.preonboarding.screens description: Content to show in the onboarding flow requireAction: type: boolean fallbackPref: browser.preonboarding.requireAction description: >- When showModal is enabled, should action be required to proceed (show as a window modal with dis currentPolicyVersion: type: int fallbackPref: datareporting.policy.currentPolicyVersion description: >- The current policy version displayed by this preonboarding modal. minimumPolicyVersion: type: int fallbackPref: datareporting.policy.minimumPolicyVersion description: >- The minimum policy version which the user must have accepted to not see the preonboarding modal firstRunURL: type: string fallbackPref: datareporting.policy.firstRunURL description: >- URL of browser tab to be opened on first run instead of infobar. 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 windowsLaunchOnLogin: description: "New checkbox in about:preferences startup section to start Firefox on Windows 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 setPref: branch: default pref: browser.startup.windowsLaunchOnLogin.enabled description: Should users see the Windows launch on login checkbox. firefoxBridge: description: "Controls for Firefox Bridge extension and extension registration" owner: install-update@mozilla.com hasExposure: false variables: enabled: type: boolean setPref: branch: default pref: browser.firefoxbridge.enabled description: >- Should Firefox Bridge be registered within firefoxBridgeNativeMessaging startup idle task for use with native messaging proxy. abouthomecache: description: "The startup about:home cache." owner: omc@mozilla.com, mconley@mozilla.com hasExposure: false variables: enabled: type: boolean description: Is the feature enabled? setPref: branch: user pref: browser.startup.homepage.abouthome_cache.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 newtabUnifiedAds: description: Mozilla Ad Routing Service (MARS) unified ads service owner: mcrawford@mozilla.com, sdowne@mozilla.com hasExposure: false variables: unifiedAdsEndpoint: description: The URL for the MARS API endpoint. type: string setPref: branch: user pref: browser.newtabpage.activity-stream.unifiedAds.endpoint unifiedAdsSpocsEnabled: type: boolean description: >- Enable MARS endpoint to serve ads for recommended stories setPref: branch: user pref: browser.newtabpage.activity-stream.unifiedAds.spocs.enabled unifiedAdsTilesEnabled: type: boolean description: >- Enable MARS endpoint to serve content for top sites tiles setPref: branch: user pref: browser.newtabpage.activity-stream.unifiedAds.tiles.enabled unifiedAdsFeedEnabled: type: boolean description: >- Enable AdsFeed to manage all ads request/serving logic setPref: branch: user pref: browser.newtabpage.activity-stream.unifiedAds.adsFeed.enabled unifiedAdsFeedTilesEnabled: type: boolean description: >- Enable AdsFeed to query MARS server to fetch/serve top sites tiles setPref: branch: user pref: browser.newtabpage.activity-stream.unifiedAds.adsFeed.tiles.enabled newtabSpocsCache: description: The about:newtab sponsored content cache. owner: sdowne@mozilla.com hasExposure: false variables: spocsCacheTimeout: type: int setPref: branch: user pref: browser.newtabpage.activity-stream.discoverystream.spocs.cacheTimeout description: >- Set sponsored content cache timeout in minutes. spocsStartupCache: type: boolean setPref: branch: user pref: browser.newtabpage.activity-stream.discoverystream.spocs.startupCache.enabl description: >- Controls if spocs should be included in startup cache. newtabAdSizingExperiment: description: >- Change the default ad size and UI for certain ad formats. owner: achurchwell@mozilla.com, sdowne@mozilla.com hasExposure: false variables: variantA: type: boolean setPref: branch: user pref: browser.newtabpage.activity-stream.newtabAdSize.variant-a description: >- Variant A ad size and UI. variantB: type: boolean setPref: branch: user pref: browser.newtabpage.activity-stream.newtabAdSize.variant-b description: >- Variant B ad size and UI. leaderboard: type: boolean setPref: branch: user pref: browser.newtabpage.activity-stream.newtabAdSize.leaderboard description: >- Leaderboard ad size and UI. leaderboard_position: type: string setPref: branch: user pref: browser.newtabpage.activity-stream.newtabAdSize.leaderboard.position description: >- Leaderboard row position. billboard: type: boolean setPref: branch: user pref: browser.newtabpage.activity-stream.newtabAdSize.billboard description: >- Billboard ad size and UI. billboard_position: type: string setPref: branch: user pref: browser.newtabpage.activity-stream.newtabAdSize.billboard.position description: >- Billboard row position. newtabInlineTopicSelection: description: >- Adds Inline topic selection to sections layout owner: nbarrett@mozilla.com hasExposure: false variables: TopicSelectionEnabled: type: boolean setPref: branch: user pref: browser.newtabpage.activity-stream.discoverystream.sections.topicSelection. description: >- Enables inline topic selection newtabLayoutExperiment: description: >- Change the default layout of new tab by adjusting sizes and spacing of elements. owner: achurchwell@mozilla.com, sdowne@mozilla.com hasExposure: false variables: variantA: type: boolean setPref: branch: user pref: browser.newtabpage.activity-stream.newtabLayouts.variant-a description: >- Variant A in layouts experiment. variantB: type: boolean setPref: branch: user pref: browser.newtabpage.activity-stream.newtabLayouts.variant-b description: >- Variant B in layouts experiment. newtabShortcutsExperiment: description: >- Adjusting sizes and spacing of new tab shortcuts. owner: sdowne@mozilla.com hasExposure: false variables: refresh: type: boolean setPref: branch: user pref: browser.newtabpage.activity-stream.newtabShortcuts.refresh description: >- Adjusting sizes and spacing of new tab shortcuts. newtabAprilFools: description: >- Replaces logo and wordmark for April Fools Day. owner: achurchwell@mozilla.com hasExposure: false variables: isAprilFools: type: boolean setPref: branch: user pref: browser.newtabpage.activity-stream.newtabLogo.aprilfools description: >- Replaces logo and wordmark for April Fools Day. newtabSponsoredContent: description: >- Change and control the sponsored content on newtab. owner: sdowne@mozilla.com hasExposure: false variables: spocPositions: type: string setPref: branch: user pref: browser.newtabpage.activity-stream.discoverystream.spoc-positions description: CSV string of spoc position indexes on newtab Pocket grid spocPlacements: type: string setPref: branch: user pref: browser.newtabpage.activity-stream.discoverystream.placements.spocs description: CSV string of spoc placement ids on newtab Pocket grid. A placement id tells our ad spocCounts: type: string setPref: branch: user pref: browser.newtabpage.activity-stream.discoverystream.placements.spocs.counts description: CSV string of spoc placement counts on newtab Pocket grid. The count tells the ad s tilesPlacements: type: string setPref: branch: user pref: browser.newtabpage.activity-stream.discoverystream.placements.tiles description: CSV string of tiles placement ids on newtab tiles section. A placement id tells ou tilesCounts: type: string setPref: branch: user pref: browser.newtabpage.activity-stream.discoverystream.placements.tiles.counts description: CSV string of tiles placement counts on newtab tiles section. The count tells the newtabTopicSelection: description: the about:newtab topic selection experience. owner: nbarrett@mozilla.com hasExposure: false variables: availableTopics: type: string setPref: branch: user pref: browser.newtabpage.activity-stream.discoverystream.topicSelection.topics description: >- List of available topics to select for topic selection suggestedTopics: type: string setPref: branch: user pref: browser.newtabpage.activity-stream.discoverystream.topicSelection.suggested description: >- List of pre-selected topics to display on first run of topic selection modal topicSelectionOnboarding: type: boolean setPref: branch: user pref: browser.newtabpage.activity-stream.discoverystream.topicSelection.onboardin description: >- Turns on and off topic selection onbaording regionTopicsConfig: description: A comma-separated list of regions that get topics selection by default. type: string setPref: branch: user pref: browser.newtabpage.activity-stream.discoverystream.topicSelection.region-to localeTopicsConfig: description: A comma-separated list of locales that get topics selection by default. type: string setPref: branch: user pref: browser.newtabpage.activity-stream.discoverystream.topicSelection.locale-to regionTopicLabelConfig: description: A comma-separated list of regions that get topic labels by default. type: string setPref: branch: user pref: browser.newtabpage.activity-stream.discoverystream.topicLabels.region-topic localeTopicLabelConfig: description: A comma-separated list of locales that get topic Labels by default. type: string setPref: branch: user pref: browser.newtabpage.activity-stream.discoverystream.topicLabels.locale-topic newtabContextualContent: description: about:newtab contextual content feed owner: nbarrett@mozilla.com hasExposure: false variables: contextualContentEnabled: type: boolean setPref: branch: user pref: browser.newtabpage.activity-stream.discoverystream.contextualContent.enable description: >- Override the contextual content enabled value set via region/locale localeContextualContentConfig: type: string setPref: branch: user pref: browser.newtabpage.activity-stream.discoverystream.contextualContent.locale description: >- A comma-separated list of locales that get contextual content by default. regionContextualContentConfig: type: string setPref: branch: user pref: browser.newtabpage.activity-stream.discoverystream.contextualContent.region description: >- A comma-separated list of regions that get contextual content by default. contextualContentFeeds: type: string setPref: branch: user pref: browser.newtabpage.activity-stream.discoverystream.contextualContent.feeds description: >- CSV list of possible feeds for the contextual content feed contextualContentSelectedFeed: type: string setPref: branch: user pref: browser.newtabpage.activity-stream.discoverystream.contextualContent.select description: >- currently selected feed to display in the Contextual Content component newTabSectionsExperiment: description: about:newtab section UI update owner: nbarrett@mozilla.com, mcrawford@mozilla.com hasExposure: false variables: sectionsEnabled: type: boolean setPref: branch: user pref: browser.newtabpage.activity-stream.discoverystream.sections.enabled description: >- Enable the Section UI for recommended stories on newtab cardRefreshThumbsUpDownEnabled: type: boolean setPref: branch: user pref: browser.newtabpage.activity-stream.discoverystream.sections.cards.thumbsUpD description: >- Enable the thumbs up/down buttons in the revised pocket story card UI in recommended stories on newtab cardRefreshEnabled: type: boolean setPref: branch: user pref: browser.newtabpage.activity-stream.discoverystream.sections.cards.enabled description: >- Enable the revised pocket story card UI in recommended stories on newtab localeSectionstConfig: type: string setPref: branch: user pref: browser.newtabpage.activity-stream.discoverystream.sections.locale-content- description: >- A comma-separated list of locales that get contextual content by default. regionSectionsConfig: type: string setPref: branch: user pref: browser.newtabpage.activity-stream.discoverystream.sections.region-content- description: >- A comma-separated list of regions that get contextual content by default. sectionsPersonalization: type: boolean setPref: branch: user pref: browser.newtabpage.activity-stream.discoverystream.sections.personalization description: >- Enable personalized sections layout. Allow users to follow/unfollow topic sections. pocketNewtab: description: The Pocket section in newtab owner: sdowne@mozilla.com hasExposure: false isEarlyStartup: true variables: spocTopsitesPositions: type: string fallbackPref: browser.newtabpage.activity-stream.discoverystream.spoc-topsites-po description: CSV string of spoc position indexes on newtab topsites section contileTopsitesPositions: type: string fallbackPref: browser.newtabpage.activity-stream.discoverystream.contile-topsites description: CSV string of contile 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.spocTopsitesAdTy description: CSV string of data to set the spoc content. spocTopsitesZoneIds: type: string fallbackPref: browser.newtabpage.activity-stream.discoverystream.spocTopsitesZone description: CSV string of data to set the spoc content. spocTopsitesPlacementEnabled: type: boolean fallbackPref: browser.newtabpage.activity-stream.discoverystream.spocTopsitesPlac description: Tuns on and off the sponsored topsites placement. 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.ena description: Enable compact cards on newtab grid only for specific breakpoints hideCardBackground: type: boolean fallbackPref: browser.newtabpage.activity-stream.discoverystream.hideCardBackgrou description: Removes Pocket card background and borders. fourCardLayout: type: boolean fallbackPref: browser.newtabpage.activity-stream.discoverystream.fourCardLayout.e 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. wallpapers: type: boolean setPref: branch: user pref: browser.newtabpage.activity-stream.newtabWallpapers.enabled description: >- Turns on and off wallpaper support. wallpapersV2: type: boolean setPref: branch: user pref: browser.newtabpage.activity-stream.newtabWallpapers.v2.enabled description: >- Turns on and off updated wallpaper experience. wallpapersHighlightEnabled: type: boolean setPref: branch: user pref: browser.newtabpage.activity-stream.newtabWallpapers.highlightEnabled description: >- Turns on and off wallpaper feature highlight. wallpaperHighlightHeaderText: type: string setPref: branch: user pref: browser.newtabpage.activity-stream.newtabWallpapers.highlightHeaderText description: >- Changes the wallpaper feature highlight header wallpaperHighlightContentText: type: string setPref: branch: user pref: browser.newtabpage.activity-stream.newtabWallpapers.highlightContentText description: >- Changes the wallpaper feature highlight content wallpaperHighlightCtaText: type: string setPref: branch: user pref: browser.newtabpage.activity-stream.newtabWallpapers.highlightCtaText description: >- Changes the wallpaper feature highlight cta currentWallpaper: type: string setPref: branch: user pref: browser.newtabpage.activity-stream.newtabWallpapers.wallpaper description: >- Changes the currently selected wallpaper weatherLocationSearch: type: boolean setPref: branch: user pref: browser.newtabpage.activity-stream.weather.locationSearchEnabled description: >- Turns on and off location search for newtab weather widget 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. discoveryStreamConfig: description: A JSON blob of discovery stream configuration. type: string setPref: branch: user pref: "browser.newtabpage.activity-stream.discoverystream.config" spocsEndpoint: description: The URL for the spocs endpoint. type: string setPref: branch: user pref: "browser.newtabpage.activity-stream.discoverystream.spocs-endpoint" spocsEndpointAllowlist: description: Comma separated list of allowed endpoints for fetching spocs type: string setPref: branch: user pref: "browser.newtabpage.activity-stream.discoverystream.endpoints" spocsClearEndpoint: description: URL for deleting any server data when a user opts out of sponsored content type: string setPref: branch: user pref: "browser.newtabpage.activity-stream.discoverystream.endpointSpocsClear" ctaButtonSponsors: description: A CSV list of sponsors that should use a button CTA. type: string fallbackPref: >- browser.newtabpage.activity-stream.discoverystream.ctaButtonSponsors ctaButtonVariant: description: Specifies which variant to use for any sponsors in ctaButtonSponsors type: string fallbackPref: >- browser.newtabpage.activity-stream.discoverystream.ctaButtonVariant spocMessageVariant: description: Adds some message dialogs explainging sponsored content to the user type: string fallbackPref: >- browser.newtabpage.activity-stream.discoverystream.spocMessageVariant 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. A merinoProviderEnabled: type: boolean fallbackPref: >- browser.newtabpage.activity-stream.discoverystream.merino-provider.enabled description: Sets the recommendations provider service to Merino. merinoProviderEndpoint: type: string fallbackPref: >- browser.newtabpage.activity-stream.discoverystream.merino-provider.endpoint description: Merino endpoint to use for recommendations. regionStoriesBlock: description: A comma-separated list of regions that do not get stories, regardless of locale- 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-stori 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 regionWeatherConfig: description: A comma-separated list of regions that get weather by default. type: string setPref: branch: user pref: browser.newtabpage.activity-stream.discoverystream.region-weather-config localeWeatherConfig: description: A comma-separated list of locales that weather widget supports. type: string setPref: branch: user pref: browser.newtabpage.activity-stream.discoverystream.locale-weather-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 pocketFeedParameters: type: string fallbackPref: >- browser.newtabpage.activity-stream.discoverystream.pocket-feed-parameters description: >- Add parameters to Pocket feed URL. merinoFeedExperiment: type: boolean setPref: branch: user pref: browser.newtabpage.activity-stream.discoverystream.merino-feed-experiment description: >- Should we pass the experiment branch and slug to the Merino feed request. thumbsUpDown: type: boolean setPref: branch: user pref: browser.newtabpage.activity-stream.discoverystream.thumbsUpDown.enabled description: Display thumbs up and down buttons on recommended stories regionThumbsUpDownConfig: description: A comma-separated list of regions that get thumbs up and down buttons by default. type: string setPref: branch: user pref: browser.newtabpage.activity-stream.discoverystream.thumbsUpDown.region-thum description: Display thumbs up and down buttons on recommended stories localeThumbsUpDownConfig: description: A comma-separated list of locales that get thumbs up and down buttons by default. type: string setPref: branch: user pref: browser.newtabpage.activity-stream.discoverystream.thumbsUpDown.locale-thum thumbsUpDownCompactLayout: type: boolean setPref: branch: user pref: browser.newtabpage.activity-stream.discoverystream.thumbsUpDown.searchTopsi description: >- Change the layout of the sections to be more compact to account for the added card height with the saveToPocket: description: The save to Pocket feature owner: sdowne@mozilla.com hasExposure: false variables: emailButton: type: boolean setPref: branch: user pref: extensions.pocket.refresh.emailButton.enabled description: Just for the new Pocket panels, enables the email signup button. hideRecentSaves: type: boolean setPref: branch: user pref: extensions.pocket.refresh.hideRecentSaves.enabled description: Hides the recently saved section in the home panel. bffRecentSaves: type: boolean setPref: branch: user pref: extensions.pocket.bffRecentSaves description: Use the new BFF Proxy Service instead of the legacy Pocket Service for Recent Save bffApi: type: string setPref: branch: user pref: extensions.pocket.bffApi description: BFF Proxy Service domain oAuthConsumerKeyBff: type: string setPref: branch: user pref: 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? # Experiment for different Relay UI treatments. Variations at: # https://www.figma.com/design/gnyElr1Wtce3RdQT54y8kS/Relay-%26-Firefox-Integrati email-autocomplete-relay: description: Relay UI for email fields. exposureDescription: Exposure is sent each time a user sees the Relay autocomplete dropdown i hasExposure: true owner: lcrouch@mozilla.com variables: firstOfferVersion: type: string description: Which Relay UI treatment to show fallbackPref: signon.firefoxRelay.firstOfferVersionFallback showToAllBrowsers: type: boolean setPref: branch: user pref: signon.firefoxRelay.showToAllBrowsers description: Whether to show Relay to Firefox users who are NOT signed into FXA. # This feature flag mirrors the one used for ios # https://github.com/mozilla-mobile/firefox-ios/blob/main/nimbus-features/address address-autofill-feature: description: Enabling address autofill feature owner: issozi@mozilla.com hasExposure: false variables: status: type: boolean setPref: branch: default pref: extensions.formautofill.addresses.experiments.enabled description: If true, we will allow user to use address autofill creditcards-autofill-enabled: description: Credit card autofill is enabled in all regions owner: issozi@mozilla.com hasExposure: false variables: creditcardsSupported: description: Enable credit card autofill in all regions type: string setPref: branch: default pref: extensions.formautofill.creditCards.supported shellService: description: "Interface with OS, e.g., pinning and set default" owner: desktop-integrations@mozilla.com hasExposure: false variables: disablePin: type: boolean description: Disable pin to taskbar feature disableStartMenuPin: type: boolean setPref: branch: user pref: browser.shell.disableStartMenuPin description: Disable pin to start menu feature setDefaultBrowserUserChoice: type: boolean setPref: branch: user pref: browser.shell.setDefaultBrowserUserChoice description: Should it set as default browser setDefaultBrowserUserChoiceRegRename: type: boolean setPref: branch: user pref: browser.shell.setDefaultBrowserUserChoice.regRename description: When setting default via UserChoice, rename the underlying registry key to prev 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. setDefaultGuidanceNotifications: type: boolean fallbackPref: browser.shell.setDefaultGuidanceNotifications description: Whether or not the user should see the guidance notifications when setting Firef 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? 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 ta schema: uri: "chrome://browser/content/asrouter/schemas/MessagingExperiment.schema.json" path: "browser/components/asrouter/content-src/schemas/MessagingExperiment.schema 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 t schema: uri: "chrome://browser/content/asrouter/schemas/MessagingExperiment.schema.json" path: "browser/components/asrouter/content-src/schemas/MessagingExperiment.schema 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 t schema: uri: "chrome://browser/content/asrouter/schemas/MessagingExperiment.schema.json" path: "browser/components/asrouter/content-src/schemas/MessagingExperiment.schema 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 t schema: uri: "chrome://browser/content/asrouter/schemas/MessagingExperiment.schema.json" path: "browser/components/asrouter/content-src/schemas/MessagingExperiment.schema variables: {} # Before 117, this feature only included one variable, pdfJsTourProgress. So, # the minimum version for messaging experiments using this feature ID is 117. featureCallout: description: "A Firefox Messaging System message for the Feature Callout 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 t schema: uri: "chrome://browser/content/asrouter/schemas/MessagingExperiment.schema.json" path: "browser/components/asrouter/content-src/schemas/MessagingExperiment.schema variables: {} fullPageTranslation: description: This feature opens a popup panel to offer to translate a page. owner: gtatum@mozilla.com hasExposure: false variables: boolean: description: Set to true to enable the translations feature type: boolean setPref: branch: user pref: browser.translations.enable fullPageTranslationAutomaticPopup: description: Controls whether the popup automatically shows for translations. owner: gtatum@mozilla.com hasExposure: false variables: boolean: description: Set to true to automatically popup, and false to only show the button. type: boolean setPref: branch: user pref: browser.translations.automaticallyPopup selectTranslation: description: This feature enables the option to translate selected text from the context menu owner: enordin@mozilla.com hasExposure: false variables: enabled: description: Set to true to enable the select-translations feature type: boolean setPref: branch: user pref: browser.translations.select.enable pdfjs: description: The Firefox pdf reader. owner: pdfjs-team@mozilla.com hasExposure: true exposureDescription: >- Exposure is sent each time a pdf is displayed. variables: enableAltText: description: Set to true to enable alt text generation. type: boolean setPref: branch: default pref: pdfjs.enableAltText enableUpdatedAddImage: description: Set to true to enable updated add image with alt text flow. type: boolean setPref: branch: default pref: pdfjs.enableUpdatedAddImage browserMlEnable: description: Set to true to enable local inference engine type: boolean setPref: branch: default pref: browser.ml.enable # fxms-message-* placeholder feature ids # # https://docs.google.com/spreadsheets/d/119YbeKStLL0Fg2QkK-yN93mrtD1rlneGZGTl_jA # has info on using these placeholder feature ids, as well as (very short) instructions on # checking to see if we need more (which we do once per Nightly) and how to add them. # # Instructions for adding a new fxms-message-* placeholder feature id # 1) clone an existing one here # 2) update the YAML feature id to the next unused number # 3) update the YAML description # 4) add the new feature id to MESSAGING_EXPERIMENTS_DEFAULT_FEATURES list in MessagingExpe # 5) add the new feature id and the version it landed to the spreadsheet tab linked to above 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 t schema: uri: "chrome://browser/content/asrouter/schemas/MessagingExperiment.schema.json" path: "browser/components/asrouter/content-src/schemas/MessagingExperiment.schema variables: {} 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 t schema: uri: "chrome://browser/content/asrouter/schemas/MessagingExperiment.schema.json" path: "browser/components/asrouter/content-src/schemas/MessagingExperiment.schema variables: {} 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 t schema: uri: "chrome://browser/content/asrouter/schemas/MessagingExperiment.schema.json" path: "browser/components/asrouter/content-src/schemas/MessagingExperiment.schema variables: {} 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 t schema: uri: "chrome://browser/content/asrouter/schemas/MessagingExperiment.schema.json" path: "browser/components/asrouter/content-src/schemas/MessagingExperiment.schema variables: {} 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 t schema: uri: "chrome://browser/content/asrouter/schemas/MessagingExperiment.schema.json" path: "browser/components/asrouter/content-src/schemas/MessagingExperiment.schema variables: {} 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 t schema: uri: "chrome://browser/content/asrouter/schemas/MessagingExperiment.schema.json" path: "browser/components/asrouter/content-src/schemas/MessagingExperiment.schema variables: {} 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 t schema: uri: "chrome://browser/content/asrouter/schemas/MessagingExperiment.schema.json" path: "browser/components/asrouter/content-src/schemas/MessagingExperiment.schema variables: {} 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 t schema: uri: "chrome://browser/content/asrouter/schemas/MessagingExperiment.schema.json" path: "browser/components/asrouter/content-src/schemas/MessagingExperiment.schema variables: {} 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 t schema: uri: "chrome://browser/content/asrouter/schemas/MessagingExperiment.schema.json" path: "browser/components/asrouter/content-src/schemas/MessagingExperiment.schema variables: {} 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 t schema: uri: "chrome://browser/content/asrouter/schemas/MessagingExperiment.schema.json" path: "browser/components/asrouter/content-src/schemas/MessagingExperiment.schema variables: {} 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 t schema: uri: "chrome://browser/content/asrouter/schemas/MessagingExperiment.schema.json" path: "browser/components/asrouter/content-src/schemas/MessagingExperiment.schema variables: {} fxms-message-12: description: "Firefox Messaging System message 12" owner: omc@mozilla.com hasExposure: true exposureDescription: >- "Exposure is sent if the message is about to be shown after trigger and targeting conditions on t schema: uri: "chrome://browser/content/asrouter/schemas/MessagingExperiment.schema.json" path: "browser/components/asrouter/content-src/schemas/MessagingExperiment.schema variables: {} fxms-message-13: description: "Firefox Messaging System message 13" owner: omc@mozilla.com hasExposure: true exposureDescription: >- "Exposure is sent if the message is about to be shown after trigger and targeting conditions on t schema: uri: "chrome://browser/content/asrouter/schemas/MessagingExperiment.schema.json" path: "browser/components/asrouter/content-src/schemas/MessagingExperiment.schema variables: {} fxms-message-14: description: "Firefox Messaging System message 14" owner: omc@mozilla.com hasExposure: true exposureDescription: >- "Exposure is sent if the message is about to be shown after trigger and targeting conditions on t schema: uri: "chrome://browser/content/asrouter/schemas/MessagingExperiment.schema.json" path: "browser/components/asrouter/content-src/schemas/MessagingExperiment.schema variables: {} fxms-message-15: description: "Firefox Messaging System message 15" owner: omc@mozilla.com hasExposure: true exposureDescription: >- "Exposure is sent if the message is about to be shown after trigger and targeting conditions on t schema: uri: "chrome://browser/content/asrouter/schemas/MessagingExperiment.schema.json" path: "browser/components/asrouter/content-src/schemas/MessagingExperiment.schema variables: {} whatsNewPage: description: "A Firefox Messaging System message for the What's new page 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 t variables: overrideUrl: description: URL of the What's new page type: string setPref: branch: user pref: startup.homepage_override_url_nimbus maxVersion: description: Maximum Firefox update version type: string setPref: branch: user pref: startup.homepage_override_nimbus_maxVersion minVersion: description: Minimum Firefox update version type: string setPref: branch: user pref: startup.homepage_override_nimbus_minVersion disableWNP: description: >- Block all What's New Pages. Used to compare no-WNP control branches to WNP treatment branches. type: boolean setPref: branch: user pref: startup.homepage_override_nimbus_disable_wnp 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 th schema: uri: "chrome://browser/content/asrouter/schemas/MessagingExperiment.schema.json" path: "browser/components/asrouter/content-src/schemas/MessagingExperiment.schema 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 th schema: uri: "chrome://browser/content/asrouter/schemas/BackgroundTaskMessagingExperiment path: "browser/components/asrouter/content-src/schemas/BackgroundTaskMessagingExp variables: {} backgroundUpdateAutomaticRestart: description: "Whether to automatically restart when the background update task could make mo owner: nalexander@mozilla.com applications: - firefox-desktop-background-task hasExposure: false variables: enabled: type: boolean fallbackPref: app.update.background.automaticRestartEnabled description: >- When true, make the background update task restart when the final update state is `READY_FOR_R Generally, this will finish applying a staged update, completing the update earlier than it otherwise would have been completed. 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 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 ti displayDuration: type: int description: Duration of PiP first time toggle display in days before switching to PiP icon tog glean: description: "The Glean data-control-plane feature within Firefox Desktop for controlling owner: glean-team@mozilla.com hasExposure: false variables: 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 'enabled' flag for t This variable is intended for interacting with the Glean data-control-plane via the Server Kn to remotely configure metrics to be enabled or disabled. gleanInternalSdk: description: "The Glean internal SDK feature intended only for internal Glean Team use" owner: glean-team@mozilla.com hasExposure: false variables: finalInactive: type: "boolean" description: "Enables FOG early shutdown pings when true" setPref: branch: user pref: telemetry.glean.internal.finalInactive gleanMetricConfiguration: type: json description: | A map of metric base-identifiers to booleans representing the state of the 'enabled' flag for t This is not for public use! For data-control-plane use, please refer to the Glean documentatio `gleanMetricConfiguration` found in the `glean` feature for this. gleanMaxPingsPerMinute: type: int description: >- Maximum number of pings that can be sent in a 60 second interval setPref: branch: user pref: telemetry.glean.internal.maxPingsPerMinute 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: branch: default pref: "browser.lowMemoryResponseMask" lowMemoryResponseOnWarn: description: Controls which macOS memory-pressure levels trigger the browser low memory res type: boolean setPref: branch: default pref: "browser.lowMemoryResponseOnWarn" tabsUnloadOnLowMemory: description: Whether to unload tabs when available memory is running low. type: boolean setPref: branch: default pref: "browser.tabs.unloadOnLowMemory" 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: branch: default pref: "network.dns.echconfig.enabled" h3Enabled: description: Whether to enable ECH for connections using H3/QUIC type: boolean setPref: branch: default pref: "network.dns.http3_echconfig.enabled" forceWaitHttpsRR: description: Whether to force waiting for HTTPS DNS records, which ECH requires. type: boolean setPref: branch: default pref: "network.dns.force_waiting_https_rr" insecureFallback: description: Whether to fallback to non-ECH connections if all ECH RRs fail. type: boolean setPref: branch: default pref: "network.dns.echconfig.fallback_to_origin_when_all_failed" tlsGreaseProb: description: Probability of GREASEing a TLS connection with ECH (0-100). type: int setPref: branch: default pref: "security.tls.ech.grease_probability" h3GreaseEnabled: description: Whether to apply GREASE settings to H3/QUIC connections. type: boolean setPref: branch: default pref: "security.tls.ech.grease_http3" disableGreaseOnFallback: description: Whether to disable GREASE when retrying a connection. type: boolean setPref: branch: default pref: "security.tls.ech.disable_grease_on_fallback" greasePaddingSize: description: Assumed echConfig padding length for GREASE extensions (1-255). type: int setPref: branch: default pref: "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: branch: default pref: "network.trr.mode" trrUri: description: The URL of the DNS over HTTPS endpoint type: string setPref: branch: default pref: "network.trr.uri" dohMode: description: Same as trrMode, but set by the DoHController module. type: int setPref: branch: default pref: "doh-rollout.mode" dohUri: description: Same as trrUri, but set by the DoHController module. type: string setPref: branch: default pref: "doh-rollout.uri" enableFallbackWarningPage: description: Whether DoH fallback warning page will be displayed when DoH doesn't work in TRR f type: boolean setPref: branch: default pref: "network.trr.display_fallback_warning" showFallbackCheckbox: description: Whether the checkbox to enable the fallback warning page is displayed in the sett type: boolean setPref: branch: default pref: "network.trr_ui.show_fallback_warning_option" nativeHTTPSRecords: description: Whether we can perform native DNS HTTPS lookups type: boolean setPref: branch: default pref: "network.dns.native_https_query" 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: branch: default pref: "network.trr.use_ohttp" ohttpRelayUri: description: The URL of the Oblivious HTTP relay type: string setPref: branch: default pref: "network.trr.ohttp.relay_uri" ohttpConfigUri: description: The URL used to fetch the configuration of the Oblivious HTTP gateway type: string setPref: branch: default pref: "network.trr.ohttp.config_uri" ohttpUri: description: The URL of the Oblivious DNS over HTTPS target resource type: string setPref: branch: default pref: "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: branch: default pref: "network.early-hints.enabled" ehPreconnectEnabled: description: Whether Early Hints preconnect is enabled type: boolean setPref: branch: default pref: "network.early-hints.preconnect.enabled" dnsMaxPriorityThreads: description: The maximum number of high priority DNS threads that can be created. type: int setPref: branch: default pref: "network.dns.max_high_priority_threads" dnsMaxAnyPriorityThreads: description: The maximum number of DNS threads that can be created to handle any priority DNS re type: int setPref: branch: default pref: "network.dns.max_any_priority_threads" preconnect: description: Whether the rel=preconnect feature is enabled type: boolean setPref: branch: default pref: "network.preconnect" networkPredictor: description: Whether the Necko predictor is enabled type: boolean setPref: branch: default pref: "network.predictor.enabled" http3CCalgorithm: description: The congestion control algorithm with which to configure neqo. 0 for NewReno, 1 f type: int setPref: branch: default pref: "network.http.http3.cc_algorithm" sendOnDataFinished: description: Whether we can send OnDataFinished in the content process type: boolean setPref: branch: default pref: "network.send_OnDataFinished" sendOnDataFinshedFromInputStreamPump: description: Whether we can send OnDataFinished to the content process from InputStreamPump type: boolean setPref: branch: default pref: "network.send_OnDataFinished.nsInputStreamPump" sendOnDataFinishedToHtml5parser: description: Whether we can send OnDataFinished to the html5parser in content process type: boolean setPref: branch: default pref: "network.send_OnDataFinished.html5parser" sendOnDataFinishedToCssLoader: description: Whether we can send OnDataFinished to the cssLoader in content process type: boolean setPref: branch: default pref: "network.send_OnDataFinished.cssLoader" enableOffMainThreadStreamDecompression: description: Whether to enable decompression of network streams off-main-thread type: boolean setPref: branch: default pref: "network.decompression_off_mainthread2" offMainThreadStreamDecompressionThreshold: description: Minimum content length for off-main-thread decompression type: int setPref: branch: default pref: "network.decompression_off_mainthread_min_size" httpMaxConnections: description: The maximum number of http connections. type: int setPref: branch: default pref: "network.http.max-connections" httpMaxPersistentConnectionsPerServer: description: The maximum number of persistent connections to a server type: int setPref: branch: default pref: "network.http.max-persistent-connections-per-server" speculativeConnectionLimit: description: The maximum number of half-open sockets allowed for speculative connections type: int setPref: branch: default pref: "network.http.speculative-parallel-limit" chipsEnabled: description: Whether CHIPS is enabled or not type: boolean setPref: branch: default pref: "network.cookie.CHIPS.enabled" chipsMigrationTarget: description: What CHIPS migration count target the browser should reach. type: int setPref: branch: default pref: "network.cookie.CHIPS.migrateDatabaseTarget" chipsPartitionLimitEnabled: description: Whether we enforce CHIPS partition limit type: boolean setPref: branch: default pref: "network.cookie.chips.partitionLimitEnabled" chipsPartitionLimitDryRun: description: Whether we actually perform purging/rejection, used to report telemetry witho type: boolean setPref: branch: default pref: "network.cookie.chips.partitionLimitDryRun" chipsPartitionLimitByteCapacity: description: The actual value of the CHIPS partition limit in bytes type: boolean setPref: branch: default pref: "network.cookie.chips.partitionLimitByteCapacity" dnsGracePeriod: description: The grace period allows the DNS cache to use expired entries, while kicking off a r type: int setPref: branch: default pref: "network.dnsCacheExpirationGracePeriod" maxDnsCacheEntries: description: This is the number of dns cache entries allowed type: int setPref: branch: default pref: "network.dnsCacheEntries" disableHttp3: description: "Whether HTTP/3 is disabled" owner: kershaw@mozilla.com hasExposure: false variables: withThirdPartyRoots: description: If third party roots are detected, disable HTTP/3 type: boolean setPref: branch: default pref: "network.http.http3.disable_when_third_party_roots_found" networkPrioritization: description: "Network request prioritization" owner: vgosu@mozilla.com hasExposure: false variables: priorityHeader: description: Whether to set the Priority header on each request. type: boolean setPref: branch: default pref: "network.http.priority_header.enabled" fetchPriority: description: Whether fetch priority is enabled type: boolean setPref: branch: default pref: "network.fetchpriority.enabled" h3FetchPriority: description: Whether to send HTTP3 priority frames type: boolean setPref: branch: default pref: "network.http.http3.priority" sendNoRFC7540Setting: description: Whether to send the SETTINGS_NO_RFC7540_PRIORITIES for the HTTP2 session. type: boolean setPref: branch: default pref: "network.http.http2.send_NO_RFC7540_PRI" h2deps: description: Whether RFC7540 priorities / stream dependencies are enabled type: boolean setPref: branch: default pref: "network.http.http2.enabled.deps" h3BackgroundTabDeprioritization: description: Lowers the priority when the tab is in the background. Potential privacy concern type: boolean setPref: branch: default pref: "network.http.http3.send_background_tabs_deprioritization" documentPriorityIncremental: description: Sets the incremental flag on the Priority header for document requests type: boolean setPref: branch: default pref: "dom.document_priority.incremental" imagePriorityIncremental: description: Sets the incremental flag on the Priority header for image requests type: boolean setPref: branch: default pref: "image.priority.incremental" imageAdjustLayoutPriority: description: Whether the network request priority should be adjusted according the layout an type: boolean setPref: branch: default pref: "image.layout_network_priority" adjustLinkPreloadScriptLow: description: Priority adjustment low for link-preload-script type: int setPref: branch: default pref: "network.fetchpriority.adjustments.link-preload-script.low" adjustLinkPreloadScriptHigh: description: Priority adjustment high for link-preload-script type: int setPref: branch: default pref: "network.fetchpriority.adjustments.link-preload-script.high" adjustLinkPreloadScriptAuto: description: Priority adjustment auto for link-preload-script type: int setPref: branch: default pref: "network.fetchpriority.adjustments.link-preload-script.auto" adjustModuleScriptLow: description: Priority adjustment low for module-script type: int setPref: branch: default pref: "network.fetchpriority.adjustments.module-script.low" adjustModuleScriptHigh: description: Priority adjustment high for module-script type: int setPref: branch: default pref: "network.fetchpriority.adjustments.module-script.high" adjustModuleScriptAuto: description: Priority adjustment auto for module-script type: int setPref: branch: default pref: "network.fetchpriority.adjustments.module-script.auto" adjustAsyncOrDeferScriptLow: description: Priority adjustment low for async-or-defer-script type: int setPref: branch: default pref: "network.fetchpriority.adjustments.async-or-defer-script.low" adjustAsyncOrDeferScriptHigh: description: Priority adjustment high for async-or-defer-script type: int setPref: branch: default pref: "network.fetchpriority.adjustments.async-or-defer-script.high" adjustAsyncOrDeferScriptAuto: description: Priority adjustment auto for async-or-defer-script type: int setPref: branch: default pref: "network.fetchpriority.adjustments.async-or-defer-script.auto" adjustScriptInHeadLow: description: Priority adjustment low for script-in-head type: int setPref: branch: default pref: "network.fetchpriority.adjustments.script-in-head.low" adjustScriptInHeadHigh: description: Priority adjustment high for script-in-head type: int setPref: branch: default pref: "network.fetchpriority.adjustments.script-in-head.high" adjustScriptInHeadAuto: description: Priority adjustment auto for script-in-head type: int setPref: branch: default pref: "network.fetchpriority.adjustments.script-in-head.auto" adjustOtherScriptLow: description: Priority adjustment low for other-script type: int setPref: branch: default pref: "network.fetchpriority.adjustments.other-script.low" adjustOtherScriptHigh: description: Priority adjustment high for other-script type: int setPref: branch: default pref: "network.fetchpriority.adjustments.other-script.high" adjustOtherScriptAuto: description: Priority adjustment auto for other-script type: int setPref: branch: default pref: "network.fetchpriority.adjustments.other-script.auto" adjustLinkPreloadFontLow: description: Priority adjustment low for link-preload-font type: int setPref: branch: default pref: "network.fetchpriority.adjustments.link-preload-font.low" adjustLinkPreloadFontHigh: description: Priority adjustment high for link-preload-font type: int setPref: branch: default pref: "network.fetchpriority.adjustments.link-preload-font.high" adjustLinkPreloadFontAuto: description: Priority adjustment auto for link-preload-font type: int setPref: branch: default pref: "network.fetchpriority.adjustments.link-preload-font.auto" adjustLinkPreloadFetchLow: description: Priority adjustment low for link-preload-fetch type: int setPref: branch: default pref: "network.fetchpriority.adjustments.link-preload-fetch.low" adjustLinkPreloadFetchHigh: description: Priority adjustment high for link-preload-fetch type: int setPref: branch: default pref: "network.fetchpriority.adjustments.link-preload-fetch.high" adjustLinkPreloadFetchAuto: description: Priority adjustment auto for link-preload-fetch type: int setPref: branch: default pref: "network.fetchpriority.adjustments.link-preload-fetch.auto" adjustDeferredStyleLow: description: Priority adjustment low for deferred-style type: int setPref: branch: default pref: "network.fetchpriority.adjustments.deferred-style.low" adjustDeferredStyleHigh: description: Priority adjustment high for deferred-style type: int setPref: branch: default pref: "network.fetchpriority.adjustments.deferred-style.high" adjustDeferredStyleAuto: description: Priority adjustment auto for deferred-style type: int setPref: branch: default pref: "network.fetchpriority.adjustments.deferred-style.auto" adjustLinkPreloadStyleLow: description: Priority adjustment low for link-preload-style type: int setPref: branch: default pref: "network.fetchpriority.adjustments.link-preload-style.low" adjustLinkPreloadStyleHigh: description: Priority adjustment high for link-preload-style type: int setPref: branch: default pref: "network.fetchpriority.adjustments.link-preload-style.high" adjustLinkPreloadStyleAuto: description: Priority adjustment auto for link-preload-style type: int setPref: branch: default pref: "network.fetchpriority.adjustments.link-preload-style.auto" adjustNonDeferredStyleLow: description: Priority adjustment low for non-deferred-style type: int setPref: branch: default pref: "network.fetchpriority.adjustments.non-deferred-style.low" adjustNonDeferredStyleHigh: description: Priority adjustment high for non-deferred-style type: int setPref: branch: default pref: "network.fetchpriority.adjustments.non-deferred-style.high" adjustNonDeferredStyleAuto: description: Priority adjustment auto for non-deferred-style type: int setPref: branch: default pref: "network.fetchpriority.adjustments.non-deferred-style.auto" adjustGlobalFetchApiLow: description: Priority adjustment low for global-fetch-api type: int setPref: branch: default pref: "network.fetchpriority.adjustments.global-fetch-api.low" adjustGlobalFetchApiHigh: description: Priority adjustment high for global-fetch-api type: int setPref: branch: default pref: "network.fetchpriority.adjustments.global-fetch-api.high" adjustGlobalFetchApiAuto: description: Priority adjustment auto for global-fetch-api type: int setPref: branch: default pref: "network.fetchpriority.adjustments.global-fetch-api.auto" adjustImagesLow: description: Priority adjustment low for images type: int setPref: branch: default pref: "network.fetchpriority.adjustments.images.low" adjustImagesHigh: description: Priority adjustment high for images type: int setPref: branch: default pref: "network.fetchpriority.adjustments.images.high" adjustImagesAuto: description: Priority adjustment auto for images type: int setPref: branch: default pref: "network.fetchpriority.adjustments.images.auto" lowerTrackersPriority: description: Whether to lower priority of resources on the tracking protection list type: boolean setPref: branch: default pref: "privacy.trackingprotection.lower_network_priority" enableHttpTailing: description: Whether certain requests, mainly trackers, are put to the "tail", behind other r type: boolean setPref: branch: default pref: "network.http.tailing.enabled" httpTailingUrgency: description: Priority urgency of tailed request type: int setPref: branch: default pref: "network.http.tailing.urgency" httpTailingDelayQuantum: description: When the page load has not yet reached DOMContentLoaded point, tail requestes ar type: int setPref: branch: default pref: "network.http.tailing.delay-quantum" httpTailingDelayQuantumAfterDCL: description: After the page load reached DOMContentLoaded point, tail requestes are delayed type: int setPref: branch: default pref: "network.http.tailing.delay-quantum-after-domcontentloaded" httpTailingMaxDelay: description: Upper limit for the calculated delay, prevents long standing and comet-like req type: int setPref: branch: default pref: "network.http.tailing.delay-max" httpTailingTotalMaxDelay: description: Total limit we delay tailed requests since page load start type: int setPref: branch: default pref: "network.http.tailing.total-max" networkingAuth: description: "Firefox Networking (Necko) Authentication" owner: vgosu@mozilla.com hasExposure: false variables: redirectForAuthRetriesEnabled: description: Whether to enable redirects for auth retries type: boolean setPref: branch: default pref: "network.auth.use_redirect_for_retries" networkingDenyIpAddrAny: description: "Firefox Networking (Necko) Deny IP Address Any" owner: vgosu@mozilla.com hasExposure: false variables: denyIpAddrAny: description: Whether to deny empty (0.0.0.0) IP addresses type: boolean setPref: branch: default pref: "network.socket.ip_addr_any.disabled" 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 variables: enabled: type: boolean description: Whether to automatically send DAP measurements. task1Enabled: type: boolean description: Whether to send fake measurements for task 1. task1TaskId: type: string description: The task ID to use for task 1 measurements. visitCountingEnabled: type: boolean description: Whether to count visits to the provided list of URLs. visitCountingExperimentList: type: json description: A list of experiments with URLs for which we want to count visits. dapAggregators: description: Aggregator server configuration to use for submitting DAP reports. owner: tcampbell@mozilla.com hasExposure: false variables: leader_url: description: The URL of the DAP Leader server where reports are submitted. type: string setPref: branch: default pref: "toolkit.telemetry.dap.leader.url" leader_hpke: description: The base64-encode HPKE key to encrypt leader shares with. type: string setPref: branch: default pref: "toolkit.telemetry.dap.leader.hpke" helper_url: description: The URL of the DAP Helper server. type: string setPref: branch: default pref: "toolkit.telemetry.dap.helper.url" helper_hpke: description: The base64-encode HPKE key to encrypt helper shares with. type: string setPref: branch: default pref: "toolkit.telemetry.dap.helper.hpke" 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: branch: default pref: "privacy.annotate_channels.strict_list.pbmode.enabled" etpStrictFeatures: description: Prefs to control the strict ETP features owner: tihuang@mozilla.com hasExposure: false variables: features: description: The list of strict ETP features to enable in ETP strict mode. type: string setPref: branch: default pref: "browser.contentblocking.features.strict" thirdPartyCookieBlocking: description: Prefs to control third-party cookie blocking owner: tihuang@mozilla.com hasExposure: false variables: enabled: description: Whether to enable third-party cookie blocking type: boolean setPref: branch: default pref: "network.cookie.cookieBehavior.optInPartitioning" enabledPBM: description: Whether to enable third-party cookie blocking in private browsing mode type: boolean setPref: branch: default pref: "network.cookie.cookieBehavior.optInPartitioning.pbmode" thirdPartyTrackerCookieBlocking: description: Prefs to control third-party tracker cookie blocking owner: tihuang@mozilla.com hasExposure: false variables: enabled: description: Whether to enable third-party tracker cookie blocking. type: boolean setPref: branch: default pref: "network.cookie.cookieBehavior.trackerCookieBlocking" fxaButtonVisibility: description: Prefs to control the visibility of the Firefox Accounts toolbar button when not s owner: mconley@mozilla.com hasExposure: false variables: boolean: description: True if the Firefox Accounts toolbar button should be visible when not signed in. type: boolean setPref: branch: user pref: identity.fxaccounts.toolbar.defaultVisible pxiToolbarEnabled: description: >- True if we're enabling the PXI dropdown menu for the FxA toolbar button instead of taking the user straight to login type: boolean setPref: branch: user pref: identity.fxaccounts.toolbar.pxiToolbarEnabled monitorEnabled: description: >- Toggle the Monitor CTA type: boolean setPref: branch: user pref: identity.fxaccounts.toolbar.pxiToolbarEnabled.monitorEnabled relayEnabled: description: >- Toggle the Relay CTA type: boolean setPref: branch: user pref: identity.fxaccounts.toolbar.pxiToolbarEnabled.relayEnabled vpnEnabled: description: >- Toggle the VPN CTA type: boolean setPref: branch: user pref: identity.fxaccounts.toolbar.pxiToolbarEnabled.vpnEnabled avatarIconVariant: description: >- Controls the icon that appears in the toolbar button when in the signed-out state. One of the following values: - control - human-circle - fox-circle type: string syncSetupFlow: description: Prefs to control the updated Mozilla account panel flow for users without sync en owner: skhamis@mozilla.com hasExposure: true exposureDescription: >- Exposure is recorded when the user is enrolled in an experiment using this feature and the avatar menu or app (hamburger) menu -> account on Firefox Desktop is opened variables: enabled: description: True if we should show the user the updated sync set-up UI type: boolean setPref: branch: user pref: identity.fxaccounts.toolbar.syncSetup.enabled fxaClientAssociation: description: Prefs to control the client association ping. owner: mconley@mozilla.com hasExposure: false variables: pingEnabled: description: >- True if the client association ping should be sent. type: boolean setPref: branch: user pref: identity.fxaccounts.telemetry.clientAssociationPing.enabled fxaAppMenuItem: description: >- Prefs to control the appearance and copy of the FxA sign-in button in the AppMenu when signed out. owner: mconley@mozilla.com hasExposure: true exposureDescription: >- Exposure is recorded when the user is enrolled in an experiment using this feature and the AppMenu on Firefox Desktop is opened. variables: ctaCopyVariant: description: >- One of the following values: - control - sync-devices - backup-data - backup-sync - mobile type: string fxaAvatarMenuItem: description: >- Prefs to control the appearance and copy of the FxA sign-in button in the FxA avatar menu when signed out. owner: mconley@mozilla.com hasExposure: true exposureDescription: >- Exposure is recorded when the user is enrolled in an experiment using this feature and the FxA avatar menu on Firefox Desktop is opened. variables: ctaCopyVariant: description: >- One of the following values: - control - sync-devices - backup-data - backup-sync - mobile type: string legacyHeartbeat: description: Normandy Heartbeat exposed to Nimbus owner: beth@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: emz@mozilla.com hasExposure: false variables: enabledNormalBrowsing: type: boolean setPref: branch: default pref: privacy.query_stripping.enabled description: Enables / disables URL query string stripping in normal browsing mode. enabledPrivateBrowsing: type: boolean setPref: branch: default pref: privacy.query_stripping.enabled.pbmode description: Enables / disables URL query string stripping in private browsing mode. allowList: type: string setPref: branch: default pref: 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: branch: default pref: 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: branch: default pref: layout.css.font-visibility.trackingprotection description: Set the Font Visibility level when Enhanced Tracking Protection is enabled enabledStandard: type: int setPref: branch: default pref: layout.css.font-visibility.standard description: Set the Font Visibility level for normal browsing enabledPBM: type: int setPref: branch: default pref: 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: branch: default pref: privacy.fingerprintingProtection description: Enables / disables fingerprinting protection in normal browsing mode. enabledPrivate: type: boolean setPref: branch: default pref: privacy.fingerprintingProtection.pbmode description: Enables / disables fingerprinting protection in private browsing mode. overrides: type: string setPref: branch: default pref: privacy.fingerprintingProtection.overrides description: >- The protection overrides to add or remove fingerprinting protection targets. Please check RFPTargets.inc for all supported targets. fdlibm_math: type: boolean setPref: branch: default pref: javascript.options.use_fdlibm_for_sin_cos_tan description: >- Uses a different math backend for Math.sin/cos/tan in JavaScript that exposes less entropy canvas_random_use_siphash: type: boolean setPref: branch: default pref: privacy.resistFingerprinting.randomization.canvas.use_siphash description: >- Uses the SipHash function for canvas randomization. userCharacteristics: description: Control user characteristic data collection owner: tihuang@mozilla.com hasExposure: false variables: currentVersion: type: int setPref: branch: user pref: toolkit.telemetry.user_characteristics_ping.current_version description: The current collection version of the user characteristics. migrationWizard: description: Prefs to control the Migration Wizard UI. owner: mconley@mozilla.com hasExposure: false variables: showImportAll: description: True if the "Variant 2" of the Migration Wizard browser / profile selection UI sho type: boolean setPref: branch: user pref: browser.migrate.content-modal.import-all.enabled showPreferencesEntrypoint: description: True if an entrypoint to the migration wizard should be visible in about:prefere type: boolean setPref: branch: user pref: 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. "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: branch: user pref: browser.migrate.content-modal.about-welcome-behavior migrateExtensions: description: True if importing extensions is enabled. type: boolean setPref: branch: user pref: browser.migrate.chrome.extensions.enabled chromeCanRequestPermissions: description: >- True if Chrome-based browsers can request read permissions on platforms where the browser is restricted from reading the contents of a Chrome-based browser's user data directory. In practice, this is only relevant to the Linux platform when the browser is installed as a Snap package. type: boolean setPref: branch: user pref: browser.migrate.chrome.get_permissions.enabled mixedContentUpgrading: description: Prefs to control whether we upgrade mixed passive content (images, audio, video owner: fbraun@mozilla.com hasExposure: false variables: enabled: description: True if the mixed content upgrading pref is enabled type: boolean setPref: branch: default pref: security.mixed_content.upgrade_display_content image: description: True if the mixed content upgrading is enabled for images type: boolean setPref: branch: default pref: security.mixed_content.upgrade_display_content.image audio: description: True if the mixed content upgrading is enabled for audio type: boolean setPref: branch: default pref: security.mixed_content.upgrade_display_content.audio video: description: True if the mixed content upgrading is enabled for videos type: boolean setPref: branch: default pref: security.mixed_content.upgrade_display_content.video gc: description: Prefs that control gc heuristics. owner: dpalmeiro@mozilla.com hasExposure: false variables: max_nursery_size: description: Set the maximum size of the GC nursery, in kb. type: int setPref: branch: user pref: "javascript.options.mem.nursery.max_kb" min_nursery_size: description: Set the minimum size of the GC nursery, in kb. type: int setPref: branch: user pref: "javascript.options.mem.nursery.min_kb" gc_allocation_threshold_mb: description: Lower limit for collecting a zone, in MB. type: int setPref: branch: user pref: "javascript.options.mem.gc_allocation_threshold_mb" gc_balanced_heap_limits: description: Whether balanced heap limits are enabled. type: boolean setPref: branch: user pref: "javascript.options.mem.gc_balanced_heap_limits" gc_compacting: description: Whether compacting GC is enabled. type: boolean setPref: branch: user pref: "javascript.options.mem.gc_compacting" gc_generational: description: Whether generational GC is enabled. type: boolean setPref: branch: user pref: "javascript.options.mem.gc_generational" gc_heap_growth_factor: description: Heap growth parameter for balanced heap limit calculation. type: int setPref: branch: user pref: "javascript.options.mem.gc_heap_growth_factor" gc_helper_thread_ratio: description: Number of threads to use for parallel GC work. type: int setPref: branch: user pref: "javascript.options.mem.gc_helper_thread_ratio" gc_high_frequency_large_heap_growth: description: Heap growth factor for large heaps in the high-frequency GC state. type: int setPref: branch: user pref: "javascript.options.mem.gc_high_frequency_large_heap_growth" gc_high_frequency_small_heap_growth: description: Heap growth factor for small heaps in the high-frequency GC state. type: int setPref: branch: user pref: "javascript.options.mem.gc_high_frequency_small_heap_growth" gc_high_frequency_time_limit_ms: description: GCs less than this far apart in milliseconds will be considered high-frequency GCs. type: int setPref: branch: user pref: "javascript.options.mem.gc_high_frequency_time_limit_ms" gc_incremental: description: Whether incremental GC is enabled. If not, GC will always run to completion. type: boolean setPref: branch: user pref: "javascript.options.mem.gc_incremental" incremental_weakmap: description: Enable incremental weakmap marking. type: boolean setPref: branch: user pref: "javascript.options.mem.incremental_weakmap" gc_incremental_slice_ms: description: Max milliseconds to spend in an incremental GC slice. type: int setPref: branch: user pref: "javascript.options.mem.gc_incremental_slice_ms" gc_large_heap_incremental_limit: description: Limit of how far over the incremental trigger threshold we allow the heap to grow before finishing a collection non-incrementally, for large heaps. type: int setPref: branch: user pref: "javascript.options.mem.gc_large_heap_incremental_limit" gc_large_heap_size_min_mb: description: Lower limit for classifying a heap as large, in MB. type: int setPref: branch: user pref: "javascript.options.mem.gc_large_heap_size_min_mb" gc_low_frequency_heap_growth: description: Heap growth factor for low frequency GCs. type: int setPref: branch: user pref: "javascript.options.mem.gc_low_frequency_heap_growth" gc_malloc_threshold_base_mb: description: Set the malloc threshold base value in MB. type: int setPref: branch: user pref: "javascript.options.mem.gc_malloc_threshold_base_mb" gc_max_empty_chunk_count: description: Do not keep more than this many unused chunks in the free chunk pool. type: int setPref: branch: user pref: "javascript.options.mem.gc_max_empty_chunk_count" gc_max_helper_threads: description: The maximum number of background threads to use for parallel GC work. type: int setPref: branch: user pref: "javascript.options.mem.gc_max_helper_threads" gc_min_empty_chunk_count: description: We try to keep at least this many unused chunks in the free chunk pool at all times, even after a shrinking GC. type: int setPref: branch: user pref: "javascript.options.mem.gc_min_empty_chunk_count" gc_parallel_marking: description: Enable parallel marking. type: boolean setPref: branch: user pref: "javascript.options.mem.gc_parallel_marking" gc_parallel_marking_threshold_mb: description: The heap size above which to use parallel marking. type: int setPref: branch: user pref: "javascript.options.mem.gc_parallel_marking_threshold_mb" gc_max_parallel_marking_threads: description: The maximum number of threads to use for parallel marking, if enabled. type: int setPref: branch: user pref: "javascript.options.mem.gc_max_parallel_marking_threads" gc_per_zone: description: Whether per-zone GC is enabled. If not, all zones are collected every time. type: boolean setPref: branch: user pref: "javascript.options.mem.gc_per_zone" gc_small_heap_incremental_limit: description: Limit of how far over the incremental trigger threshold we allow the heap to grow before finishing a collection non-incrementally, for small heaps. type: int setPref: branch: user pref: "javascript.options.mem.gc_small_heap_incremental_limit" gc_small_heap_size_max_mb: description: Upper limit for classifying a heap as small, in MB. type: int setPref: branch: user pref: "javascript.options.mem.gc_small_heap_size_max_mb" gc_urgent_threshold_mb: description: Set the urgent threshold, in MB. type: int setPref: branch: user pref: "javascript.options.mem.gc_urgent_threshold_mb" nursery_eager_collection_threshold_kb: description: Set the eager collection threshold, in kb, for the nursery. type: int setPref: branch: user pref: "javascript.options.mem.nursery_eager_collection_threshold_kb" nursery_eager_collection_threshold_percent: description: Set the eager collection percent threshold for the nursery. type: int setPref: branch: user pref: "javascript.options.mem.nursery_eager_collection_threshold_percent" nursery_eager_collection_timeout_ms: description: Set the eager collection timeout, in ms, for the nursery. type: int setPref: branch: user pref: "javascript.options.mem.nursery_eager_collection_timeout_ms" jsParallelParsing: description: Pref to toggle JS parallel parsing. owner: dpalmeiro@mozilla.com, nbp@mozilla.com hasExposure: false variables: enabled: description: True to enable parallel parsing. type: boolean setPref: branch: user pref: "javascript.options.parallel_parsing" jitThresholds: description: Prefs that control jit tier thresholds. owner: dpalmeiro@mozilla.com, jdemooij@mozilla.com hasExposure: false variables: blinterp_threshold: description: Set the threshold to enable blinterp compilation. type: int setPref: branch: user pref: "javascript.options.blinterp.threshold" baseline_threshold: description: Set the threshold to enable baseline compilation. type: int setPref: branch: user pref: "javascript.options.baselinejit.threshold" ion_threshold: description: Set the threshold to enable ion compilation. type: int setPref: branch: user pref: "javascript.options.ion.threshold" ion_bailout_threshold: description: Set the ion frequent bailout threshold. type: int setPref: branch: user pref: "javascript.options.ion.frequent_bailout_threshold" ion_offthread_compilation: description: True to enable offthread ion compilations. type: boolean setPref: branch: user pref: "javascript.options.ion.offthread_compilation" inlining_max_length: description: Set the max bytecode length considered for inlining. type: int setPref: branch: user pref: "javascript.options.inlining_bytecode_max_length" jitHintsCache: description: Pref to toggle the JIT hints cache. owner: dpalmeiro@mozilla.com hasExposure: false variables: enabled: description: True to enable the hints cache. type: boolean setPref: branch: user pref: "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: branch: default pref: "network.http.rcwn.enabled" shopping2023: description: Prefs to control the 2023 shopping experiment. owner: jhirsch@mozilla.com hasExposure: true exposureDescription: >- The timing of the exposure event depends on the experiment, but generally the event is recorded when the user first encounters onboarding UI for the shopping feature. variables: enabled: description: True if the experience is enabled (experimental treatment group) type: boolean fallbackPref: browser.shopping.experience2023.enabled control: description: True if the experiment is enabled but experience is disabled (experimental cont type: boolean fallbackPref: browser.shopping.experience2023.control adsEnabled: description: True if showing recommended products is enabled type: boolean setPref: branch: default pref: browser.shopping.experience2023.ads.enabled adsExposure: description: True if we want to record ad inventory for opted-in users, even if ads are disabled type: boolean setPref: branch: default pref: browser.shopping.experience2023.ads.exposure surveyEnabled: description: True if showing survey is enabled type: boolean fallbackPref: browser.shopping.experience2023.survey.enabled autoOpenEnabled: description: True if auto-open behavior for the sidebar is enabled type: boolean setPref: branch: default pref: browser.shopping.experience2023.autoOpen.enabled shoppingOHTTP: description: Prefs to control the OHTTP URLs used for shopping. owner: gijs@mozilla.com hasExposure: false variables: ohttpRelayURL: description: What OHTTP relay URL to use type: string setPref: branch: default pref: toolkit.shopping.ohttpRelayURL ohttpConfigURL: description: URL for the OHTTP config to use type: string setPref: branch: default pref: toolkit.shopping.ohttpConfigURL opaqueResponseBlocking: description: Prefs to enable Opaque Response Blocking owner: farre@mozilla.com hasExposure: true exposureDescription: Exposure is sent when a response is blocked variables: enabled: description: Whether ORB is enabled type: boolean setPref: branch: user pref: "browser.opaqueResponseBlocking" javascriptValidator: description: Whether JavaScript validation for ORB is enabled type: boolean setPref: branch: user pref: "browser.opaqueResponseBlocking.javascriptValidator" filterFetchResponse: description: Whether filtering of internal responses in the parent ORB is enabled type: int setPref: branch: user pref: "browser.opaqueResponseBlocking.filterFetchResponse" mediaExceptionsStrategy: description: >- If we partially or wholly allow audio and video MIME types in conflict with spec. type: int setPref: branch: user pref: "browser.opaqueResponseBlocking.mediaExceptionsStrategy" updatePrompt: description: Prefs to control content and behavior of update notifications owner: omc@mozilla.com hasExposure: true exposureDescription: >- Exposure is sent at most once per browsing session when an update notification prompt is displayed. variables: showReleaseNotesLink: type: boolean description: >- If true, the "Learn More" link will be shown in the update prompt. If false or omitted, the link will only be shown for supported locales. releaseNotesURL: type: string fallbackPref: app.releaseNotesURL.prompt description: >- Template for the URL opened when the user clicks the "Learn More" link in the update prompt. If an empty string, the link will not be shown. powerSaver: description: Prefs to control power saving behaviors owner: florian@mozilla.com hasExposure: false variables: reduceFrameRates: type: int setPref: branch: user pref: "gfx.display.max-frame-rate" description: >- Limit the number of frames displayed per second. If omitted, the refresh rate of the screen will be used. mediaAutoPlay: type: int setPref: branch: user pref: "media.autoplay.default" description: >- Control if media is allowed to auto-play, with and without sound. backgroundTimerMinTime: type: int setPref: branch: user pref: "dom.min_background_timeout_value" description: >- Limit how frequently timers are allowed to run in background tabs. backgroundTimerRegenerationRate: type: int setPref: branch: user pref: "dom.timeout.background_budget_regeneration_rate" description: >- Limit how quickly the background tab timer budget regenerates. backgroundUpdate: description: Prefs to control aspects of the background update process. owner: install-update@mozilla.com hasExposure: true exposureDescription: >- The exposure event is sent when scheduling the background task and both the feature is enabled and the service registry key (Mozilla Maintenance Service) is *not* available for this installation. That is the first time the feature can impact Firefox behaviour and the user experience. variables: enableUpdatesForUnelevatedInstallations: description: >- Allow the background update process to download and apply updates when the Mozilla Maintenance Service is unavailable but the installation directory can be written. type: boolean setPref: branch: user pref: app.update.background.allowUpdatesForUnelevatedInstallations bookmarks: description: Prefs to control aspects of the bookmarks system. owner: omc@mozilla.com hasExposure: false variables: enableBookmarksToolbar: type: string setPref: branch: user pref: browser.toolbars.bookmarks.visibility description: If the bookmarks toolbar should never, always, or only show on newtab. showOtherBookmarks: type: boolean setPref: branch: user pref: browser.toolbars.bookmarks.showOtherBookmarks description: Display state of the "Other Bookmarks" toolbar button. cookieBannerHandling: description: Automatically handle cookie banners on the user's behalf. owner: emz@mozilla.com hasExposure: false variables: modeNormalBrowsing: type: int setPref: branch: default pref: cookiebanners.service.mode description: >- Controls the cookie banner handling mode in normal browsing. Values: 0 - disabled, 1 - reject all, 2 - reject all with accept all fallback. modePrivateBrowsing: type: int setPref: branch: default pref: cookiebanners.service.mode.privateBrowsing description: >- Controls the cookie banner handling mode in private browsing. Values: 0 - disabled, 1 - reject all, 2 - reject all with accept all fallback. enableGlobalRules: type: boolean setPref: branch: default pref: cookiebanners.service.enableGlobalRules description: >- Enables use of global CookieBannerRules, which apply to all sites. This enables handling of CMPs across sites without the use of site-specific rules. enableGlobalRulesSubFrames: type: boolean setPref: branch: default pref: cookiebanners.service.enableGlobalRules.subFrames description: >- Whether global rules are allowed to run in sub-frames. Running query selectors in every sub-frame may negatively impact performance, but is required for some CMPs. enableDetectOnly: type: boolean setPref: branch: default pref: cookiebanners.service.detectOnly description: >- When set to true, cookie banners are detected and detection events are dispatched, but they will not be handled. This pref applies to both normal and private browsing windows. enableFirefoxDesktopUI: type: boolean setPref: branch: default pref: cookiebanners.ui.desktop.enabled description: Enables the cookie banner desktop UI. enablePromo: type: boolean setPref: branch: default pref: browser.promo.cookiebanners.enabled description: Enables the cookie banner promo in about:privatebrowsing. enableDesktopFeatureCallout: type: boolean setPref: branch: default pref: cookiebanners.ui.desktop.showCallout description: Enables the cookie banner feature callout on desktop. backgroundThreads: description: Prefs to control MacOS thread priorities for power savings. owner: kwright@mozilla.com hasExposure: false variables: use_low_power: description: >- Use the MacOS QoS libraries to deprioritize select threads. type: boolean setPref: branch: user pref: threads.use_low_power.enabled lower_mainthread_priority_in_background: description: >- When a browsing context is put in the background and isn't actively playing media, deprioritize its main thread. type: boolean setPref: branch: user pref: threads.lower_mainthread_priority_in_background.enabled reportBrokenSite: description: The Report Broken Site feature owner: twisniewski@mozilla.com hasExposure: false variables: enabled: type: boolean setPref: branch: user pref: ui.new-webcompat-reporter.enabled description: >- Whether Report Broken Site is enabled sendMoreInfo: type: boolean setPref: branch: user pref: ui.new-webcompat-reporter.send-more-info-link description: >- Whether Report Broken Site shows the send more info link directing users to webcompat.com (defaults to true for prerelease channels) reasonDropdown: type: int setPref: branch: user pref: ui.new-webcompat-reporter.reason-dropdown description: >- 0 = do not show the "reason" dropdown 1 = show an optional "reason" dropdown 2 = show a required "reason" dropdown feltPrivacy: description: Prefs for Felt Privacy v1 experiments owner: cmeador@mozilla.com hasExposure: true exposureDescription: Exposure when user opens a private browsing window. variables: feltPrivacy: type: boolean setPref: branch: default pref: browser.privatebrowsing.felt-privacy-v1 description: >- When true, new styles and copy enabled on about:privatebrowsing. When true, a toggle for showing or hiding quick suggestions appears in about:preferences. resetPBMAction: type: boolean setPref: branch: default pref: browser.privatebrowsing.resetPBM.enabled description: >- Enables the reset PBM feature button and confirmation panel. phc: description: Prefs to control the Probabalistic Heap Checker (PHC) owner: pbone@mozilla.com hasExposure: false variables: phcEnabled: description: Whether to enable PHC type: boolean setPref: branch: user pref: memory.phc.enabled phcMinRamMB: description: The minimum amount of RAM required to enable PHC type: int setPref: branch: user pref: memory.phc.min_ram_mb phcAvgDelayFirst: description: The delay before the first PHC allocation type: int setPref: branch: user pref: memory.phc.avg_delay.first phcAvgDelayNormal: description: The delay between PHC allocations type: int setPref: branch: user pref: memory.phc.avg_delay.normal phcAvgDelayPageReuse: description: The delay before reusing a PHC page type: int setPref: branch: user pref: memory.phc.avg_delay.page_reuse mailto: description: Prefs to control aspects of the mailto handler owner: install-update@mozilla.com hasExposure: true exposureDescription: >- The exposure event is sent when a webmail site calls the registerProtocolHandler function and when users use mailto links in Firefox. variables: dualPrompt: type: boolean description: >- Can be used to toggle the entire feature on and off. fallbackPref: browser.mailto.dualPrompt dualPrompt.onLocationChange: type: boolean description: >- Display a reminder prompt for known webmailers if the prompt was not dismissed before the next visit of that webmailer. fallbackPref: browser.mailto.dualPrompt.onLocationChange dualPrompt.dismissXClickMinutes: type: int description: >- This pref controls after how many minutes the mailto prompt can be shown again, which has been dismissed by clicking the 'X' button before. fallbackPref: browser.mailto.dualPrompt.dismissXClickMinutes dualPrompt.dismissNotNowMinutes: type: int description: >- This pref controls after how many minutes the mailto prompt can be shown again, which has been dismissed by clicking a 'not now' button on it. fallbackPref: browser.mailto.dualPrompt.dismissNotNowMinutes nimbusIsReady: description: A feature that provides the number of Nimbus is_ready events to send when Nimbus is ready. owner: chumphreys@mozilla.com hasExposure: false applications: - firefox-desktop variables: eventCount: description: The number of events that should be sent. type: int nimbusTelemetry: description: A feature that enables or disables Nimbus telemetry. owner: nimbus-team@mozilla.com hasExposure: false applications: - firefox-desktop variables: gleanMetricConfiguration: description: > A Glean metric configuration JSON blob. This is limited to configuring the following categories: - nimbus_events - nimbus_targeting_context - nimbus_targeting_environment type: json nimbusTargetingEnvironment: description: > Configuration for the nimbus_targeting_environment telemetry category. type: json schema: uri: resource://nimbus/schemas/NimbusTelemetryFeature.schema.json path: toolkit/components/nimbus/schemas/NimbusTelemetryFeature.schema.json httpsFirst: description: >- Prefs for HTTPS-First, which upgrades all top-level page loads to HTTPS and provides a automatic fallback to HTTP if the site isn't available via HTTPS. owner: mjurgens@mozilla.com, seceng-telemetry@mozilla.com hasExposure: false variables: enabled: description: Enable HTTPS-First type: boolean setPref: branch: default pref: dom.security.https_first enabledPbm: description: Enable HTTPS-First in private browsing only type: boolean setPref: branch: default pref: dom.security.https_first_pbm enabledSchemeless: description: >- Enables schemeless HTTPS-First, which will only apply HTTPS-First to address bar inputs without a scheme. This essentially makes HTTPS the default scheme in the address bar, while providing a fallback to HTTP. type: boolean setPref: branch: default pref: dom.security.https_first_schemeless backgroundTimerMs: description: >- After a request gets upgraded to HTTPS, specifies the time after which a second HTTP request is fired to check if the site is available via HTTPS, but timing out via HTTPS. This also applies to HTTPS-Only, not just HTTPS-First. type: int setPref: branch: default pref: dom.security.https_only_fire_http_request_background_timer_ms contentRelevancy: description: >- A feature for interest-based content relevance ranking and personalization for Firefox. owner: disco-team@mozilla.com hasExposure: false variables: enabled: description: Enable this feature type: boolean fallbackPref: toolkit.contentRelevancy.enabled maxInputUrls: description: The maximum number of input URLs for interest classification type: int minInputUrls: description: The minimal number of input URLs for interest classification type: int timerInterval: description: >- The interval (in seconds) of the background update timer for the content relevancy manager type: int setPref: branch: user pref: toolkit.contentRelevancy.timerInterval ingestEnabled: description: Enable the ingestion through the Rust component type: boolean fallbackPref: toolkit.contentRelevancy.ingestEnabled backupService: description: Prefs to control the profile backup service owner: mconley@mozilla.com hasExposure: false variables: enabled: type: boolean setPref: branch: default pref: browser.backup.enabled description: >- When true, the profile backup service will be initialized soon after startup. prefsUIEnabled: type: boolean setPref: branch: default pref: browser.backup.preferences.ui.enabled description: >- When true, the section in about:preferences to control the backup feature is visible. sqlitePagesPerStep: description: >- The number of database pages to backup per step when backing up an SQLite database. type: int setPref: branch: user pref: browser.backup.sqlite.pages_per_step sqliteStepDelayMs: description: >- The delay between SQLite database backup steps in milliseconds. type: int setPref: branch: user pref: browser.backup.sqlite.step_delay_ms idleThresholdSeconds: description: >- The number of seconds of user idle time to wait for before considering to schedule a backup. type: int setPref: branch: user pref: browser.backup.scheduled.idle-threshold-seconds minTimeBetweenBackupsSeconds: description: >- The minimum number of seconds since the last known backup that must pass before we might schedule a backup. type: int setPref: branch: user pref: browser.backup.scheduled.minimum-time-between-backups-seconds pqcrypto: description: Prefs that control the use of post-quantum cryptography. owner: jschanck@mozilla.com hasExposure: false variables: tlsEnableMlkem: type: boolean setPref: branch: default pref: security.tls.enable_kyber description: >- Whether to enable mlkem768x25519 for TLS. h3EnableMlkem: type: boolean setPref: branch: default pref: network.http.http3.enable_kyber description: >- Whether to enable mlkem768x25519 for H3/QUIC. sendP256: type: boolean setPref: branch: default pref: security.tls.client_hello.send_p256_keyshare description: >- Whether to send a P256 share in the client hello in QUIC and TLS. dtlsWebRTCEnableMlkem: type: boolean setPref: branch: default pref: media.webrtc.enable_pq_dtls description: >- Whether to enable mlkem768x25519 for DTLS in WebRTC. dtlsWebRTC: description: Pref that controls the use of DTLS. owner: nkulatova@mozilla.com hasExposure: false variables: tlsVersionDTLS: type: int setPref: branch: default pref: media.peerconnection.dtls.version.max description: >- The maximum version of DTLS protocol used in WebRTC (770 = DTLS 1.0, 771 = DTLS 1.2, 772 = DTLS 1.3) certCompression: description: Prefs that control the use of certificate compression decoders. owner: anna.weine@mozilla.com hasExposure: false variables: tlsEnableZlib: type: boolean setPref: branch: default pref: security.tls.enable_certificate_compression_zlib description: >- Whether to enable Zlib for TLS certificate compression. tlsEnableBrotli: type: boolean setPref: branch: default pref: security.tls.enable_certificate_compression_brotli description: >- Whether to enable Brotli for TLS certificate compression. tlsEnableZstd: type: boolean setPref: branch: default pref: security.tls.enable_certificate_compression_zstd description: >- Whether to enable Zstd for TLS certificate compression. bounceTrackingProtection: description: Controls the Bounce Tracking Protection feature. owner: emz@mozilla.com isEarlyStartup: true hasExposure: true exposureDescription: >- Exposure is recored after every purge run which purged at least one tracker. Exposure is only recorded when the feature is fully enabled and not in dry-run mode. variables: mode: type: int setPref: branch: default pref: privacy.bounceTrackingProtection.mode description: >- Mode to run the feature in. See nsIBounceTrackingProtection.idl for documentation. requireStatefulBounces: type: boolean setPref: branch: default pref: privacy.bounceTrackingProtection.requireStatefulBounces description: >- If true, only bounce redirects where the middle hop/s access cookies or storage will be considered to be bounce trackers. If false, all redirects that fit the bounce tracker heuristic will be considered. remoteTabManagement: description: > Features that let users manage tabs on other devices that are connected to the same Mozilla account. owner: skhamis@mozilla.com hasExposure: false variables: closeTabsEnabled: description: >- When true, the user can close tabs on other devices connected to the same Mozilla account from the synced tabs menu. type: boolean fallbackPref: identity.fxaccounts.commands.remoteTabManagement.enabled crlite: description: Prefs that control the use of CRLite owner: jschanck@mozilla.com hasExposure: false variables: enabled: type: boolean setPref: branch: default pref: security.remote_settings.crlite_filters.enabled description: >- Whether CRLite artifacts will be downloaded. channel: type: string setPref: branch: default pref: security.pki.crlite_channel description: >- The channel from which CRLite artifacts will be downloaded. mode: type: int setPref: branch: default pref: security.pki.crlite_mode description: >- How CRLite results will be interpreted. timestamps_for_coverage: type: int setPref: branch: default pref: security.pki.crlite_timestamps_for_coverage description: >- How many covered timestamps do we need to see before we enforce a CRLite result. chatbot: description: AI chatbot feature configuration owner: elee@mozilla.com hasExposure: false variables: minVersion: type: string description: Minimum Firefox version to apply prefs prefs: type: json description: >- The prefs to set under browser.ml.chat.* with object keys as the sub-pref and values objects indicating the desired branch and value defaulting to clearing the user branch value. sidebar: description: Sidebar feature configuration owner: elee@mozilla.com hasExposure: false variables: minVersion: type: string description: Minimum Firefox version to apply prefs main.tools: type: string description: sidebar.main.tools pref value to set on user branch; which tools for sidebar pan revamp: type: boolean description: sidebar.revamp pref value to set on user branch; true for new experience verticalTabs: type: boolean description: sidebar.verticalTabs pref value to set on user branch; true to enable vertical t visibility: type: string description: sidebar.visibility pref value ("hide" or "always-show") to set on user branch fxms_bmb_button: description: A feature for the Firefox Messaging System Bookmarks Bar button surface 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. schema: uri: chrome://browser/content/asrouter/schemas/MessagingExperiment.schema.json path: browser/components/asrouter/content-src/schemas/MessagingExperiment.schema. variables: {} contentProcessSandbox: description: Prefs that control the content process sandbox. owner: bowen@mozilla.com hasExposure: false variables: Level: description: Content process sandbox level type: int setPref: branch: user pref: security.sandbox.content.level certificateTransparency: description: Certificate Transparency configuration owner: dkeeler@mozilla.com hasExposure: false variables: mode: type: int setPref: branch: default pref: security.pki.certificate_transparency.mode description: >- What mode Certificate Transparency is in (0=disable, 1=telemetry only, 2=enforce). setToDefaultPrompt: description: "Experimental set to default spotlight" owner: omc@mozilla.com hasExposure: true exposureDescription: >- "Exposure is sent if the message is about to be shown after trigger and targeting conditions on t variables: showSpotlightPrompt: description: Show experimental set to default spotlight message instead of default prompt type: boolean message: description: Message to show instead of the default prompt type: json tabGroups: description: Prefs to control Tab Groups owner: dao@mozilla.com hasExposure: false variables: enabled: type: boolean fallbackPref: browser.tabs.groups.enabled description: Controls whether users can create new tab groups via drag and drop or the tab conte smartblockEmbeds: description: Pref to control Smartblock Embeds owner: emz@mozilla.com hasExposure: false variables: enabled: type: boolean setPref: branch: default pref: extensions.webcompat.smartblockEmbeds.enabled description: >- Controls whether smartblock embed placeholders and protections panel toggles will be shown t selectableProfiles: description: "Multiple profile management using selectableProfileService" owner: jhirsch@mozilla.com hasExposure: false variables: enabled: type: boolean description: Enables the multiple profiles feature when true. Turning off this variable will storageAccessHeuristics: description: Heuristics that grant cookie access automatically for foreign resources owner: bvandersloot@mozilla.com hasExposure: false variables: popup_past_interaction: type: boolean setPref: branch: default pref: privacy.restrict3rdpartystorage.heuristic.window_open description: >- Do we grant cookie access to a third party when it is opened in a popup if it has been interacted with in the recent past? popup_interaction: type: boolean setPref: branch: default pref: privacy.restrict3rdpartystorage.heuristic.opened_window_after_interaction description: >- Do we grant cookie access to a third party when it is opened in a popup if it has the opener relationship and the user interacts with the popup? navigation: type: boolean setPref: branch: default pref: privacy.restrict3rdpartystorage.heuristic.navigation description: >- Do we grant cookie access to a third party when it is interacted with earlier in this tab's history, and the current first party is even further back in the history? redirect: type: boolean setPref: branch: default pref: privacy.restrict3rdpartystorage.heuristic.recently_visited description: >- Do we grant cookie access to a third party when it has been interacted with in the recent past, has been visited in the past few minutes, and redirects itself to another top level site? redirect_tracker: type: boolean setPref: branch: default pref: privacy.restrict3rdpartystorage.heuristic.redirect description: >- Do we grant cookie access to a tracker third party when it has been interacted with in the recent past and redirects itself to another top level site? auto-pip: description: "Automatic Picture-in-Picture" owner: mconley@mozilla.com hasExposure: false variables: enabled: type: boolean description: Whether or not to auto-open PiP when switching tabs. setPref: branch: user pref: "media.videocontrols.picture-in-picture.enable-when-switching-tabs.enabled" urlbar-ime-search: description: "Urlbar IME" owner: search-and-suggest-program@mozilla.com hasExposure: false variables: enabled: type: boolean description: Whether or not to keep the urlbar panel open during IME composition. setPref: branch: user pref: "browser.urlbar.keepPanelOpenDuringImeComposition" web-rtc-global-mute-toggles: description: "WebRTC Global Mute Toggles" owner: mconley@mozilla.com hasExposure: false variables: enabled: type: boolean description: Whether or not to enable global mute toggles to the WebRTC indicator. setPref: branch: user pref: "privacy.webrtc.globalMuteToggles" jpeg-xl: description: "JPEG-XL" owner: krosylight@mozilla.com hasExposure: false variables: enabled: type: boolean description: Whether or not to enable JPEG-XL support. setPref: branch: user pref: "image.jxl.enabled" css-masonry: description: "CSS Masonry Layout" owner: dholbert@mozilla.com hasExposure: false variables: enabled: type: boolean description: Whether or not to enable CSS masonry layout. setPref: branch: user pref: "layout.css.grid-template-masonry-value.enabled" h1-in-section-styles: description: "H1 in section user agent styles" owner: zcorpan@mozilla.com hasExposure: false variables: enabled: type: boolean description: Whether to enable H1 in section UA styles, see https://github.com/whatwg/html setPref: branch: user pref: layout.css.h1-in-section-ua-styles.enabled [Seitenstruktur0.98Druckenetwas mehr zur Ethik2026-04-29] |
2026-05-26