BlankAnchorTargetImpliesNoOpenerEnabled: type: bool defaultValue: true webcoreBinding: RuntimeEnabledFeatures humanReadableName: "Blank anchor target implies rel=noopener" humanReadableDescription: "target=_blank on anchor elements implies rel=noopener" category: experimental DeviceOrientationEventEnabled: type: bool defaultValue: true condition: ENABLE(DEVICE_ORIENTATION) webcoreName: deviceOrientationEventEnabled DeviceOrientationPermissionAPIEnabled: type: bool defaultValue: false condition: ENABLE(DEVICE_ORIENTATION) webcoreName: deviceOrientationPermissionAPIEnabled DisallowSyncXHRDuringPageDismissalEnabled: type: bool defaultValue: defaultDisallowSyncXHRDuringPageDismissalEnabled() humanReadableName: "Disallow sync XHR during page dismissal" humanReadableDescription: "Disallow synchronous XMLHttpRequest during page dismissal" category: experimental JavaScriptEnabled: type: bool defaultValue: true webcoreName: scriptEnabled JavaScriptMarkupEnabled: type: bool defaultValue: true webcoreName: scriptMarkupEnabled LoadsImagesAutomatically: type: bool defaultValue: true LoadsSiteIconsIgnoringImageLoadingPreference: type: bool defaultValue: false webcoreName: loadsSiteIconsIgnoringImageLoadingSetting PluginsEnabled: type: bool defaultValue: false HTTPSUpgradeEnabled: type: bool defaultValue: false humanReadableName: "Automatic HTTPS upgrade" humanReadableDescription: "Automatic HTTPS upgrade for known supported sites" category: experimental InProcessCookieCacheEnabled: type: bool defaultValue: true humanReadableName: "In-Process Cookie Cache" humanReadableDescription: "In-Process DOM Cookie Cache" category: experimental ThirdPartyIframeRedirectBlockingEnabled: type: bool defaultValue: true humanReadableName: "Block top-level redirects by third-party iframes" humanReadableDescription: "Block top-level redirects by third-party iframes" category: experimental GoogleAntiFlickerOptimizationQuirkEnabled: type: bool defaultValue: true humanReadableName: "Quirk to prevent delayed initial painting on sites using Google's Anti-Flicker optimization" humanReadableDescription: "Quirk to prevent delayed initial painting on sites using Google's Anti-Flicker optimization" category: experimental JavaEnabled: type: bool defaultValue: false JavaEnabledForLocalFiles: type: bool defaultValue: false OfflineWebApplicationCacheEnabled: type: bool defaultValue: true LocalStorageEnabled: type: bool defaultValue: true DatabasesEnabled: type: bool defaultValue: true webcoreBinding: custom XSSAuditorEnabled: type: bool defaultValue: true SafeBrowsingEnabled: type: bool defaultValue: true webcoreBinding: none TextAreasAreResizable: type: bool defaultValue: DEFAULT_TEXT_AREAS_ARE_RESIZABLE JavaScriptCanOpenWindowsAutomatically: type: bool defaultValue: DEFAULT_JAVASCRIPT_CAN_OPEN_WINDOWS_AUTOMATICALLY HyperlinkAuditingEnabled: type: bool defaultValue: true NeedsSiteSpecificQuirks: type: bool defaultValue: true AcceleratedCompositingEnabled: type: bool defaultValue: true ForceCompositingMode: type: bool defaultValue: false webcoreBinding: none CanvasUsesAcceleratedDrawing: type: bool defaultValue: true WebGLEnabled: type: bool defaultValue: true Accelerated2dCanvasEnabled: type: bool defaultValue: false ForceFTPDirectoryListings: type: bool defaultValue: false TabsToLinks: type: bool defaultValue: DEFAULT_WEBKIT_TABSTOLINKS_ENABLED webcoreBinding: none DNSPrefetchingEnabled: type: bool defaultValue: false DOMTimersThrottlingEnabled: type: bool defaultValue: true WebArchiveDebugModeEnabled: type: bool defaultValue: false condition: ENABLE(WEB_ARCHIVE) LocalFileContentSniffingEnabled: type: bool defaultValue: false UsesBackForwardCache: type: bool defaultValue: true BackForwardCacheSupportsPlugins: type: bool defaultValue: true AuthorAndUserStylesEnabled: type: bool defaultValue: true PaginateDuringLayoutEnabled: type: bool defaultValue: false DOMPasteAllowed: type: bool defaultValue: false JavaScriptCanAccessClipboard: type: bool defaultValue: false ShouldPrintBackgrounds: type: bool defaultValue: DEFAULT_SHOULD_PRINT_BACKGROUNDS LinkPreconnect: type: bool defaultValue: DEFAULT_LINK_PRECONNECT_ENABLED webcoreName: linkPreconnectEnabled AsynchronousSpellCheckingEnabled: type: bool defaultValue: false WebSecurityEnabled: type: bool defaultValue: true AllowUniversalAccessFromFileURLs: type: bool defaultValue: false AllowFileAccessFromFileURLs: type: bool defaultValue: false AllowSettingAnyXHRHeaderFromFileURLs: type: bool defaultValue: false AllowCrossOriginSubresourcesToAskForCredentials: type: bool defaultValue: false AllowTopNavigationToDataURLs: type: bool defaultValue: false ShouldRestrictBaseURLSchemes: type: bool defaultValue: false AVFoundationEnabled: type: bool defaultValue: DEFAULT_AVFOUNDATION_ENABLED getter: isAVFoundationEnabled webcoreBinding: DeprecatedGlobalSettings condition: USE(AVFOUNDATION) AVFoundationNSURLSessionEnabled: type: bool defaultValue: true getter: isAVFoundationNSURLSessionEnabled webcoreBinding: DeprecatedGlobalSettings condition: USE(AVFOUNDATION) GStreamerEnabled: type: bool defaultValue: true getter: isGStreamerEnabled webcoreBinding: DeprecatedGlobalSettings condition: USE(GSTREAMER) RequiresUserGestureForMediaPlayback: type: bool defaultValue: false webcoreBinding: custom RequiresUserGestureForVideoPlayback: type: bool defaultValue: false webcoreBinding: custom RequiresUserGestureForAudioPlayback: type: bool defaultValue: DEFAULT_REQUIRES_USER_GESTURE_FOR_AUDIO_PLAYBACK webcoreBinding: custom RequiresUserGestureToLoadVideo: type: bool defaultValue: false MainContentUserGestureOverrideEnabled: type: bool defaultValue: false MediaUserGestureInheritsFromDocument: type: bool defaultValue: false UserGesturePromisePropagationEnabled: type: bool defaultValue: true webcoreBinding: RuntimeEnabledFeatures humanReadableName: "UserGesture Promise Propagation" humanReadableDescription: "UserGesture Promise Propagation" category: experimental AllowsInlineMediaPlayback: type: bool defaultValue: DEFAULT_ALLOWS_INLINE_MEDIA_PLAYBACK AllowsInlineMediaPlaybackAfterFullscreen: type: bool defaultValue: DEFAULT_ALLOWS_INLINE_MEDIA_PLAYBACK_AFTER_FULLSCREEN InlineMediaPlaybackRequiresPlaysInlineAttribute: type: bool defaultValue: DEFAULT_INLINE_MEDIA_PLAYBACK_REQUIRES_PLAYS_INLINE_ATTRIBUTE InvisibleAutoplayNotPermitted: type: bool defaultValue: DEFAULT_INVISIBLE_AUTOPLAY_NOT_PERMITTED MediaDataLoadsAutomatically: type: bool defaultValue: DEFAULT_MEDIA_DATA_LOADS_AUTOMATICALLY AllowsPictureInPictureMediaPlayback: type: bool defaultValue: DEFAULT_ALLOWS_PICTURE_IN_PICTURE_MEDIA_PLAYBACK AllowsAirPlayForMediaPlayback: type: bool defaultValue: true condition: ENABLE(WIRELESS_PLAYBACK_TARGET) MediaControlsScaleWithPageZoom: type: bool defaultValue: DEFAULT_MEDIA_CONTROLS_SCALE_WITH_PAGE_ZOOM InspectorStartsAttached: type: bool defaultValue: true webcoreBinding: none ShowsToolTipOverTruncatedText: type: bool defaultValue: false MockScrollbarsEnabled: type: bool defaultValue: false webcoreBinding: DeprecatedGlobalSettings WebAudioEnabled: type: bool defaultValue: true condition: ENABLE(WEB_AUDIO) PrefixedWebAudioEnabled: type: bool defaultValue: true condition: ENABLE(WEB_AUDIO) humanReadableName: "Prefixed WebAudio API" humanReadableDescription: "Prefixed WebAudio API" category: internal ModernUnprefixedWebAudioEnabled: type: bool defaultValue: false condition: ENABLE(WEB_AUDIO) humanReadableName: "Modern WebAudio API" humanReadableDescription: "Modern and unprefixed WebAudio API" category: experimental AttachmentElementEnabled: type: bool defaultValue: false webcoreBinding: RuntimeEnabledFeatures condition: ENABLE(ATTACHMENT_ELEMENT) SuppressesIncrementalRendering: type: bool defaultValue: false BackspaceKeyNavigationEnabled: type: bool defaultValue: DEFAULT_BACKSPACE_KEY_NAVIGATION_ENABLED CaretBrowsingEnabled: type: bool defaultValue: false ShouldDisplaySubtitles: type: bool defaultValue: false condition: ENABLE(VIDEO) ShouldDisplayCaptions: type: bool defaultValue: false condition: ENABLE(VIDEO) ShouldDisplayTextDescriptions: type: bool defaultValue: false condition: ENABLE(VIDEO) NotificationsEnabled: type: bool defaultValue: true condition: ENABLE(NOTIFICATIONS) ShouldRespectImageOrientation: type: bool defaultValue: DEFAULT_SHOULD_RESPECT_IMAGE_ORIENTATION WantsBalancedSetDefersLoadingBehavior: type: bool defaultValue: false RequestAnimationFrameEnabled: type: bool defaultValue: true RequestIdleCallbackEnabled: type: bool defaultValue: false humanReadableName: "requestIdleCallback" humanReadableDescription: "Enable requestIdleCallback support" category: experimental DiagnosticLoggingEnabled: type: bool defaultValue: false AsynchronousPluginInitializationEnabled: type: bool defaultValue: false webcoreBinding: none AsynchronousPluginInitializationEnabledForAllPlugins: type: bool defaultValue: false webcoreBinding: none ArtificialPluginInitializationDelayEnabled: type: bool defaultValue: false webcoreBinding: none # FIXME: What is this? TabToLinksEnabled: type: bool defaultValue: false webcoreBinding: none ScrollingPerformanceLoggingEnabled: type: bool defaultValue: false webcoreBinding: custom ScrollAnimatorEnabled: type: bool defaultValue: DEFAULT_WEBKIT_SCROLL_ANIMATOR_ENABLED condition: ENABLE(SMOOTH_SCROLLING) ForceUpdateScrollbarsOnMainThreadForPerformanceTesting: type: bool defaultValue: false CookieEnabled: type: bool defaultValue: true PlugInSnapshottingEnabled: type: bool defaultValue: false SnapshotAllPlugIns: type: bool defaultValue: false AutostartOriginPlugInSnapshottingEnabled: type: bool defaultValue: true PrimaryPlugInSnapshotDetectionEnabled: type: bool defaultValue: true PDFPluginEnabled: type: bool defaultValue: DEFAULT_PDFPLUGIN_ENABLED webcoreBinding: none condition: PLATFORM(COCOA) UsesEncodingDetector: type: bool defaultValue: false TextAutosizingEnabled: type: bool defaultValue: WebCore::Settings::defaultTextAutosizingEnabled() condition: ENABLE(TEXT_AUTOSIZING) AggressiveTileRetentionEnabled: type: bool defaultValue: false TemporaryTileCohortRetentionEnabled: type: bool defaultValue: DEFAULT_TEMPORARY_TILE_COHORT_RETENTION_ENABLED PageVisibilityBasedProcessSuppressionEnabled: type: bool defaultValue: true webcoreBinding: none SmartInsertDeleteEnabled: type: bool defaultValue: true SelectTrailingWhitespaceEnabled: type: bool defaultValue: false ShowsURLsInToolTipsEnabled: type: bool defaultValue: false webcoreName: showsURLsInToolTips HiddenPageDOMTimerThrottlingEnabled: type: bool defaultValue: DEFAULT_HIDDEN_PAGE_DOM_TIMER_THROTTLING_ENABLED HiddenPageDOMTimerThrottlingAutoIncreases: type: bool defaultValue: false HiddenPageCSSAnimationSuspensionEnabled: type: bool defaultValue: DEFAULT_HIDDEN_PAGE_CSS_ANIMATION_SUSPENSION_ENABLED LowPowerVideoAudioBufferSizeEnabled: type: bool defaultValue: true webcoreBinding: DeprecatedGlobalSettings ThreadedScrollingEnabled: type: bool defaultValue: true webcoreBinding: none SimpleLineLayoutEnabled: type: bool defaultValue: true humanReadableName: "Simple line layout" humanReadableDescription: "Enable simple line layout path (SLL)" category: internal ContentChangeObserverEnabled: type: bool defaultValue: true condition: PLATFORM(IOS_FAMILY) SubpixelCSSOMElementMetricsEnabled: type: bool defaultValue: false UseGiantTiles: type: bool defaultValue: false MediaRecorderEnabled: type: bool defaultValue: defaultMediaRecorderEnabled() webcoreBinding: RuntimeEnabledFeatures condition: ENABLE(MEDIA_STREAM) humanReadableName: "MediaRecorder" humanReadableDescription: "MediaRecorder" category: experimental MediaDevicesEnabled: type: bool defaultValue: false webcoreBinding: RuntimeEnabledFeatures condition: ENABLE(MEDIA_STREAM) MediaStreamEnabled: type: bool defaultValue: true webcoreBinding: RuntimeEnabledFeatures condition: ENABLE(MEDIA_STREAM) MediaEnabled: type: bool defaultValue: true webcoreName: mediaEnabled condition: ENABLE(VIDEO) ScreenCaptureEnabled: type: bool defaultValue: true webcoreBinding: RuntimeEnabledFeatures condition: ENABLE(MEDIA_STREAM) && PLATFORM(MAC) humanReadableName: "ScreenCapture" humanReadableDescription: "Enable ScreenCapture" category: experimental PeerConnectionEnabled: type: bool defaultValue: WebCore::LibWebRTCProvider::webRTCAvailable() webcoreBinding: RuntimeEnabledFeatures condition: ENABLE(WEB_RTC) InterruptAudioOnPageVisibilityChangeEnabled: type: bool defaultValue: WebCore::RealtimeMediaSourceCenter::shouldInterruptAudioOnPageVisibilityChange() webcoreBinding: RuntimeEnabledFeatures condition: ENABLE(MEDIA_STREAM) WebRTCH264LowLatencyEncoderEnabled: type: bool defaultValue: defaultWebRTCH264LowLatencyEncoderEnabled() webcoreBinding: RuntimeEnabledFeatures condition: ENABLE(WEB_RTC) humanReadableName: "WebRTC H264 LowLatency encoder" humanReadableDescription: "Enable H264 LowLatency encoder" category: experimental WebRTCH265CodecEnabled: type: bool defaultValue: false webcoreBinding: RuntimeEnabledFeatures condition: ENABLE(WEB_RTC) humanReadableName: "WebRTC H265 codec" humanReadableDescription: "Enable WebRTC H265 codec" category: experimental WebRTCVP9CodecEnabled: type: bool defaultValue: false webcoreBinding: RuntimeEnabledFeatures condition: ENABLE(WEB_RTC) humanReadableName: "WebRTC VP9 codec" humanReadableDescription: "Enable WebRTC VP9 codec" category: experimental WebRTCPlatformCodecsInGPUProcessEnabled: type: bool defaultValue: defaultWebRTCCodecsInGPUProcess() webcoreBinding: RuntimeEnabledFeatures condition: ENABLE(WEB_RTC) humanReadableName: "WebRTC Platform Codecs in GPU Process" humanReadableDescription: "Enable WebRTC Platform Codecs in GPU Process" category: experimental WebRTCDTMFEnabled: type: bool defaultValue: true webcoreBinding: RuntimeEnabledFeatures condition: ENABLE(WEB_RTC) humanReadableName: "WebRTC DTMF" humanReadableDescription: "Enable WebRTC DTMF" category: internal WebRTCH264SimulcastEnabled: type: bool defaultValue: true webcoreBinding: RuntimeEnabledFeatures condition: ENABLE(WEB_RTC) humanReadableName: "WebRTC H264 Simulcast" humanReadableDescription: "Enable WebRTC H264 Simulcast" category: internal WebRTCMDNSICECandidatesEnabled: type: bool defaultValue: true humanReadableName: "WebRTC mDNS ICE candidates" humanReadableDescription: "Enable WebRTC mDNS ICE candidates" webcoreBinding: RuntimeEnabledFeatures category: internal condition: ENABLE(WEB_RTC) VP9DecoderEnabled: type: bool defaultValue: defaultVP9DecoderEnabled() webcoreBinding: none humanReadableName: "VP9 decoder" humanReadableDescription: "Enable VP9 decoder" category: experimental condition: ENABLE(VP9) VP9SWDecoderEnabledOnBattery: type: bool defaultValue: defaultVP9SWDecoderEnabledOnBattery() webcoreBinding: none humanReadableName: "VP9 SW decoder on battery" humanReadableDescription: "Enable VP9 SW decoder on battery" category: experimental condition: ENABLE(VP9) WebMParserEnabled: type: bool defaultValue: defaultWebMParserEnabled() webcoreBinding: RuntimeEnabledFeatures humanReadableName: "WebM MSE parser" humanReadableDescription: "Enable WebM MSE parser" category: experimental condition: ENABLE(MEDIA_SOURCE) && ENABLE(VP9) UseLegacyTextAlignPositionedElementBehavior: type: bool defaultValue: false SpatialNavigationEnabled: type: bool defaultValue: false MediaSourceEnabled: type: bool defaultValue: WebCore::Settings::platformDefaultMediaSourceEnabled() condition: ENABLE(MEDIA_SOURCE) webcoreBinding: none ViewGestureDebuggingEnabled: type: bool defaultValue: false webcoreBinding: none ShouldConvertPositionStyleOnCopy: type: bool defaultValue: false Standalone: type: bool defaultValue: false TelephoneNumberParsingEnabled: type: bool defaultValue: false AllowMultiElementImplicitSubmission: type: bool defaultValue: false AlwaysUseAcceleratedOverflowScroll: type: bool defaultValue: false PasswordEchoEnabled: type: bool defaultValue: DEFAULT_PASSWORD_ECHO_ENABLED ImageControlsEnabled: type: bool defaultValue: false condition: ENABLE(SERVICE_CONTROLS) EnableInheritURIQueryComponent: type: bool defaultValue: false ServiceControlsEnabled: type: bool defaultValue: false condition: ENABLE(SERVICE_CONTROLS) DeferredCSSParserEnabled: type: bool defaultValue: false HTTPEquivEnabled: type: bool defaultValue: true webcoreName: httpEquivEnabled MockCaptureDevicesPromptEnabled: type: bool defaultValue: true webcoreBinding: none # FIXME: What is this for? EnumeratingAllNetworkInterfacesEnabled: type: bool defaultValue: false webcoreBinding: none ShadowDOMEnabled: type: bool defaultValue: true humanReadableName: "Shadow DOM" humanReadableDescription: "HTML Shadow DOM prototype" webcoreBinding: RuntimeEnabledFeatures FetchAPIEnabled: type: bool defaultValue: true webcoreBinding: RuntimeEnabledFeatures DownloadAttributeEnabled: type: bool defaultValue: true webcoreBinding: RuntimeEnabledFeatures condition: ENABLE(DOWNLOAD_ATTRIBUTE) SelectionPaintingWithoutSelectionGapsEnabled: type: bool defaultValue: false ApplePayEnabled: type: bool defaultValue: DEFAULT_APPLE_PAY_ENABLED condition: ENABLE(APPLE_PAY) ApplePayCapabilityDisclosureAllowed: type: bool defaultValue: true condition: ENABLE(APPLE_PAY) LayoutViewportHeightExpansionFactor: type: double defaultValue: DEFAULT_VISUAL_VIEWPORT_HEIGHT_EXPANSION_FACTOR NeedsStorageAccessFromFileURLsQuirk: type: bool defaultValue: true LargeImageAsyncDecodingEnabled: type: bool defaultValue: true AnimatedImageAsyncDecodingEnabled: type: bool defaultValue: true CustomElementsEnabled: type: bool defaultValue: true webcoreBinding: RuntimeEnabledFeatures MenuItemElementEnabled: type: bool defaultValue: false webcoreBinding: RuntimeEnabledFeatures MediaPreloadingEnabled: type: bool defaultValue: false webcoreBinding: RuntimeEnabledFeatures InteractiveFormValidationEnabled: type: bool defaultValue: true humanReadableName: "HTML Interactive Form Validation" humanReadableDescription: "HTML interactive form validation" webcoreBinding: RuntimeEnabledFeatures ShouldSuppressTextInputFromEditingDuringProvisionalNavigation: type: bool defaultValue: false GamepadsEnabled: type: bool defaultValue: true humanReadableName: "Gamepads" humanReadableDescription: "Web Gamepad API support" webcoreBinding: RuntimeEnabledFeatures condition: ENABLE(GAMEPAD) HighlightAPIEnabled: type: bool defaultValue: false humanReadableName: "Highlight API" humanReadableDescription: "Highlight API support" webcoreBinding: RuntimeEnabledFeatures category: experimental InputEventsEnabled: type: bool defaultValue: true humanReadableName: "Input Events" humanReadableDescription: "Enable InputEvents support" webcoreBinding: RuntimeEnabledFeatures WebAuthenticationEnabled: type: bool defaultValue: false humanReadableName: "Web Authentication" humanReadableDescription: "Enable Web Authentication support" webcoreBinding: RuntimeEnabledFeatures category: experimental condition: ENABLE(WEB_AUTHN) WebAuthenticationLocalAuthenticatorEnabled: type: bool defaultValue: false humanReadableName: "Web Authentication Local Authenticator" humanReadableDescription: "Enable Web Authentication local authenticator support" webcoreBinding: RuntimeEnabledFeatures category: experimental condition: ENABLE(WEB_AUTHN) ModernMediaControlsEnabled: type: bool defaultValue: DEFAULT_MODERN_MEDIA_CONTROLS_ENABLED humanReadableName: "Modern Media Controls" humanReadableDescription: "Use modern media controls look" webcoreBinding: RuntimeEnabledFeatures PaintTimingEnabled: type: bool defaultValue: false humanReadableName: "Paint Timing" humanReadableDescription: "Enable PaintTiming API" webcoreBinding: RuntimeEnabledFeatures category: experimental ResourceTimingEnabled: type: bool defaultValue: true humanReadableName: "Resource Timing" humanReadableDescription: "Enable ResourceTiming API" webcoreBinding: RuntimeEnabledFeatures UserTimingEnabled: type: bool defaultValue: true humanReadableName: "User Timing" humanReadableDescription: "Enable UserTiming API" webcoreBinding: RuntimeEnabledFeatures BeaconAPIEnabled: type: bool defaultValue: true humanReadableName: "Beacon API" humanReadableDescription: "Beacon API" LegacyEncryptedMediaAPIEnabled: type: bool defaultValue: true humanReadableName: "Enable Legacy EME API" humanReadableDescription: "Enable legacy EME API" webcoreBinding: RuntimeEnabledFeatures condition: ENABLE(LEGACY_ENCRYPTED_MEDIA) AllowMediaContentTypesRequiringHardwareSupportAsFallback: type: bool defaultValue: DEFAULT_ALLOW_MEDIA_CONTENT_TYPES_REQUIRING_HARDWARE_SUPPORT_AS_FALLBACK humanReadableName: "Allow Media Content Types Requirining Hardware As Fallback" humanReadableDescription: "Allow Media Content Types Requirining Hardware As Fallback" InspectorAdditionsEnabled: type: bool defaultValue: false humanReadableName: "Web Inspector Additions" humanReadableDescription: "Enable additional page APIs used by the Web Inspector frontend page" webcoreBinding: RuntimeEnabledFeatures DirectoryUploadEnabled: type: bool defaultValue: DEFAULT_DIRECTORY_UPLOAD_ENABLED humanReadableName: "Directory Upload" humanReadableDescription: "input.webkitdirectory / dataTransferItem.webkitGetAsEntry()" webcoreBinding: RuntimeEnabledFeatures DataTransferItemsEnabled: type: bool defaultValue: DEFAULT_DATA_TRANSFER_ITEMS_ENABLED humanReadableName: "Data Transfer Items" humanReadableDescription: "Enables DataTransferItem in the clipboard API" webcoreBinding: RuntimeEnabledFeatures CustomPasteboardDataEnabled: type: bool defaultValue: DEFAULT_CUSTOM_PASTEBOARD_DATA_ENABLED humanReadableName: "Custom pasteboard data" humanReadableDescription: "Enable custom clipboard types and better security model for clipboard API." webcoreBinding: RuntimeEnabledFeatures AsyncClipboardAPIEnabled: type: bool defaultValue: DEFAULT_ASYNC_CLIPBOARD_API_ENABLED humanReadableName: "Async clipboard API" humanReadableDescription: "Enable the async clipboard API" category: experimental WebShareEnabled: type: bool defaultValue: DEFAULT_WEB_SHARE_ENABLED humanReadableName: "Web Share" humanReadableDescription: "Enable support for share sheet via Web Share API" webcoreBinding: RuntimeEnabledFeatures ViewportFitEnabled: type: bool defaultValue: true humanReadableName: "Viewport Fit" humanReadableDescription: "Enable viewport-fit viewport parameter" IncrementalRenderingSuppressionTimeout: type: double defaultValue: 5 webcoreName: incrementalRenderingSuppressionTimeoutInSeconds MinimumFontSize: type: double defaultValue: 0 MinimumLogicalFontSize: type: double defaultValue: 9 MinimumZoomFontSize: type: double defaultValue: WebCore::Settings::defaultMinimumZoomFontSize() condition: ENABLE(TEXT_AUTOSIZING) DefaultFontSize: type: double defaultValue: 16 DefaultFixedFontSize: type: double defaultValue: 13 MaxParseDuration: type: double defaultValue: -1 PasswordEchoDuration: type: double defaultValue: 2 webcoreName: passwordEchoDurationInSeconds LayoutFallbackWidth: type: uint32_t defaultValue: 980 DeviceWidth: type: uint32_t defaultValue: 0 DeviceHeight: type: uint32_t defaultValue: 0 EditableLinkBehavior: type: uint32_t defaultValue: WebCore::EditableLinkNeverLive webcoreBinding: custom InspectorAttachedHeight: type: uint32_t defaultValue: 500 webcoreBinding: none InspectorAttachedWidth: type: uint32_t defaultValue: 750 webcoreBinding: none InspectorAttachmentSide: type: uint32_t defaultValue: 0 webcoreBinding: none StorageBlockingPolicy: type: uint32_t defaultValue: WebCore::SecurityOrigin::BlockThirdPartyStorage webcoreBinding: custom JavaScriptRuntimeFlags: type: uint32_t defaultValue: 0 webcoreBinding: custom DataDetectorTypes: type: uint32_t defaultValue: 0 webcoreBinding: custom condition: ENABLE(DATA_DETECTION) UserInterfaceDirectionPolicy: type: uint32_t defaultValue: 0 webcoreBinding: custom SystemLayoutDirection: type: uint32_t defaultValue: 0 webcoreBinding: custom FrameFlatteningEnabled: type: bool defaultValue: DEFAULT_FRAME_FLATTENING webcoreBinding: custom humanReadableName: "Frame flattening" humanReadableDescription: "Enable frame flattening, which adjusts the height of an iframe to fit its contents" category: internal StandardFontFamily: type: String defaultValue: DEFAULT_STANDARD_FONT_FAMILY CursiveFontFamily: type: String defaultValue: DEFAULT_CURSIVE_FONT_FAMILY FantasyFontFamily: type: String defaultValue: DEFAULT_FANTASY_FONT_FAMILY FixedFontFamily: type: String defaultValue: DEFAULT_FIXED_FONT_FAMILY SansSerifFontFamily: type: String defaultValue: DEFAULT_SANS_SERIF_FONT_FAMILY SerifFontFamily: type: String defaultValue: DEFAULT_SERIF_FONT_FAMILY PictographFontFamily: type: String defaultValue: DEFAULT_PICTOGRAPH_FONT_FAMILY DefaultTextEncodingName: type: String defaultValue: defaultTextEncodingNameForSystemLanguage() FTPDirectoryTemplatePath: type: String defaultValue: '""' MediaContentTypesRequiringHardwareSupport: type: String defaultValue: WebCore::Settings::defaultMediaContentTypesRequiringHardwareSupport() InspectorWindowFrame: type: String defaultValue: '""' webcoreBinding: none InactiveMediaCaptureSteamRepromptIntervalInMinutes: type: double defaultValue: DEFAULT_INTERACTIVE_MEDIA_CAPTURE_STREAM_REPROMPT_INTERVAL_IN_MINUTES webcoreBinding: none LongRunningMediaCaptureStreamRepromptIntervalInHours: type: double defaultValue: 24 webcoreBinding: none PassiveTouchListenersAsDefaultOnDocument: type: bool defaultValue: defaultPassiveTouchListenersAsDefaultOnDocument() webcoreName: passiveTouchListenersAsDefaultOnDocument ShouldIgnoreMetaViewport: type: bool defaultValue: false # Debug Preferences AcceleratedDrawingEnabled: type: bool defaultValue: true category: debug SubpixelAntialiasedLayerTextEnabled: type: bool defaultValue: DEFAULT_SUBPIXEL_ANTIALIASED_LAYER_TEXT_ENABLED category: debug DisplayListDrawingEnabled: type: bool defaultValue: false category: debug CompositingBordersVisible: type: bool defaultValue: false category: debug webcoreName: showDebugBorders CompositingRepaintCountersVisible: type: bool defaultValue: false category: debug webcoreName: showRepaintCounter TiledScrollingIndicatorVisible: type: bool defaultValue: false category: debug webcoreName: showTiledScrollingIndicator DisableScreenSizeOverride: type: bool defaultValue: false category: debug condition: PLATFORM(IOS_FAMILY) SimpleLineLayoutDebugBordersEnabled: type: bool defaultValue: false category: debug DeveloperExtrasEnabled: type: bool defaultValue: false category: debug LogsPageMessagesToSystemConsoleEnabled: type: bool defaultValue: false category: debug ForceAlwaysUserScalable: type: bool defaultValue: false category: debug webcoreBinding: none condition: PLATFORM(IOS_FAMILY) ResourceUsageOverlayVisible: type: bool defaultValue: false category: debug condition: ENABLE(RESOURCE_USAGE) VisibleDebugOverlayRegions: type: uint32_t defaultValue: 0 category: debug ShouldEnableTextAutosizingBoost: type: bool defaultValue: false condition: ENABLE(TEXT_AUTOSIZING) ShouldAllowUserInstalledFonts: type: bool defaultValue: true MediaCapabilitiesEnabled: type: bool defaultValue: true SystemPreviewEnabled: type: bool defaultValue: false webcoreBinding: RuntimeEnabledFeatures condition: USE(SYSTEM_PREVIEW) CacheAPIEnabled: type: bool defaultValue: true webcoreBinding: RuntimeEnabledFeatures ConstantPropertiesEnabled: type: bool defaultValue: true SubresourceIntegrityEnabled: type: bool defaultValue: true CrossOriginResourcePolicyEnabled: type: bool defaultValue: true webcoreBinding: RuntimeEnabledFeatures DisabledAdaptationsMetaTagEnabled: type: bool defaultValue: DISABLED_ADAPTATIONS_META_TAG_ENABLED webcoreBinding: RuntimeEnabledFeatures ColorFilterEnabled: type: bool defaultValue: false PunchOutWhiteBackgroundsInDarkMode: type: bool defaultValue: false IncompleteImageBorderEnabled: type: bool defaultValue: false ShouldDeferAsynchronousScriptsUntilAfterDocumentLoadOrFirstPaint: type: bool defaultValue: true humanReadableName: "Defer async scripts until DOMContentLoaded or first-paint" humanReadableDescription: "Defer async scripts until DOMContentLoaded or first-paint" category: experimental StorageAccessAPIEnabled: type: bool defaultValue: true LinkPreloadEnabled: type: bool defaultValue: true webcoreBinding: RuntimeEnabledFeatures IsSecureContextAttributeEnabled: type: bool defaultValue: true webcoreBinding: RuntimeEnabledFeatures SourceBufferChangeTypeEnabled: type: bool defaultValue: true condition: ENABLE(MEDIA_SOURCE) KeygenElementEnabled: type: bool defaultValue: false webcoreBinding: RuntimeEnabledFeatures humanReadableName: "HTMLKeygenElement" humanReadableDescription: "Enables the deprecated and disabled-by-default HTML keygen element." category: internal EncryptedMediaAPIEnabled: type: bool defaultValue: true webcoreBinding: RuntimeEnabledFeatures condition: ENABLE(ENCRYPTED_MEDIA) VideoQualityIncludesDisplayCompositingEnabled: type: bool defaultValue: false condition: ENABLE(VIDEO) EditableImagesEnabled: type: bool defaultValue: false ShouldDecidePolicyBeforeLoadingQuickLookPreview: defaultValue: false type: bool ShouldUseServiceWorkerShortTimeout: defaultValue: false type: bool IsInAppBrowserPrivacyEnabled: type: bool defaultValue: defaultInAppBrowserPrivacy() humanReadableName: "In-App Browser Privacy" humanReadableDescription: "Enable In-App Browser Privacy" webcoreBinding: RuntimeEnabledFeatures category: debug NeedsInAppBrowserPrivacyQuirks: type: bool defaultValue: false humanReadableName: "Needs In-App Browser Privacy Quirks" humanReadableDescription: "Enable quirks needed to support In-App Browser privacy" webcoreBinding: RuntimeEnabledFeatures category: debug ServiceWorkerEntitlementDisabledForTesting: type: bool defaultValue: false webcoreBinding: none # For experimental features: # The type should be boolean. # You must provide a humanReadableName and humanReadableDescription for all experimental features. They # are the text exposed to the user from the WebKit client. # The default value may be either false (for unstable features) or # DEFAULT_EXPERIMENTAL_FEATURES_ENABLED (for features that are ready for # wider testing). SpringTimingFunctionEnabled: type: bool defaultValue: DEFAULT_EXPERIMENTAL_FEATURES_ENABLED humanReadableName: "CSS Spring Animations" humanReadableDescription: "CSS Spring Animation prototype" category: experimental ImageBitmapEnabled: type: bool defaultValue: DEFAULT_EXPERIMENTAL_FEATURES_ENABLED humanReadableName: "ImageBitmap" humanReadableDescription: "Support for the ImageBitmap APIs" category: experimental webcoreBinding: RuntimeEnabledFeatures HTTP3Enabled: type: bool defaultValue: false humanReadableName: "HTTP/3" humanReadableDescription: "Enable HTTP/3" category: experimental webcoreBinding: none condition: HAVE(CFNETWORK_ALTERNATIVE_SERVICE) OffscreenCanvasEnabled: type: bool defaultValue: DEFAULT_OFFSCREEN_CANVAS_ENABLED humanReadableName: "OffscreenCanvas" humanReadableDescription: "Support for the OffscreenCanvas APIs" category: internal webcoreBinding: RuntimeEnabledFeatures condition: ENABLE(OFFSCREEN_CANVAS) IntersectionObserverEnabled: type: bool defaultValue: true humanReadableName: "Intersection Observer" humanReadableDescription: "Enable Intersection Observer support" webcoreBinding: RuntimeEnabledFeatures category: experimental condition: ENABLE(INTERSECTION_OBSERVER) VisualViewportAPIEnabled: type: bool defaultValue: true humanReadableName: "Visual Viewport API" humanReadableDescription: "Enable Visual Viewport API" category: experimental SyntheticEditingCommandsEnabled: type: bool defaultValue: true humanReadableName: "Synthetic Editing Commands" humanReadableDescription: "Enable Synthetic Editing Commands" category: experimental CSSOMViewScrollingAPIEnabled: type: bool defaultValue: defaultCSSOMViewScrollingAPIEnabled() humanReadableName: "CSSOM View Scrolling API" humanReadableDescription: "Implement standard behavior for scrollLeft, scrollTop, scrollWidth, scrollHeight, scrollTo, scrollBy and scrollingElement." category: internal BlockingOfSmallPluginsEnabled: type: bool defaultValue: true humanReadableName: "Block small plugins" humanReadableDescription: "Stop plugins smaller than a certain threshold from loading." category: internal CSSOMViewSmoothScrollingEnabled: type: bool defaultValue: false humanReadableName: "CSSOM View Smooth Scrolling" humanReadableDescription: "Enable DOM API and CSS property for 'smooth' scroll behavior" category: experimental WebAnimationsEnabled: type: bool defaultValue: true humanReadableName: "Web Animations" humanReadableDescription: "Web Animations prototype" category: experimental webcoreBinding: RuntimeEnabledFeatures WebAnimationsCSSIntegrationEnabled: type: bool defaultValue: true humanReadableName: "CSS Animations via Web Animations" humanReadableDescription: "Expose CSS Animations and CSS Transitions through getAnimations()" category: experimental webcoreBinding: RuntimeEnabledFeatures WebAnimationsCompositeOperationsEnabled: type: bool defaultValue: DEFAULT_EXPERIMENTAL_FEATURES_ENABLED humanReadableName: "Web Animations composite operations" humanReadableDescription: "Support for the CompositeOperation enum and properties consuming it" category: experimental webcoreBinding: RuntimeEnabledFeatures WebAnimationsMutableTimelinesEnabled: type: bool defaultValue: DEFAULT_EXPERIMENTAL_FEATURES_ENABLED humanReadableName: "Web Animations mutable timelines" humanReadableDescription: "Support for setting the timeline property of an Animation object" category: experimental webcoreBinding: RuntimeEnabledFeatures WebGL2Enabled: type: bool defaultValue: false humanReadableName: "WebGL 2.0" humanReadableDescription: "WebGL 2 prototype" category: experimental webcoreBinding: RuntimeEnabledFeatures condition: ENABLE(WEBGL2) WebGPUEnabled: type: bool defaultValue: defaultWebGPUEnabled() humanReadableName: "WebGPU" humanReadableDescription: "WebGPU Sketch prototype" category: experimental webcoreBinding: RuntimeEnabledFeatures condition: ENABLE(WEBGPU) MaskWebGLStringsEnabled: type: bool defaultValue: true humanReadableName: "Mask WebGL Strings" humanReadableDescription: "Mask WebGL Vendor, Renderer, Shader Language Strings" category: experimental webcoreBinding: RuntimeEnabledFeatures condition: ENABLE(WEBGL) || ENABLE(WEBGL2) AccessibilityObjectModelEnabled: type: bool defaultValue: false humanReadableName: "Accessibility Object Model" humanReadableDescription: "Accessibility Object Model support" category: experimental webcoreBinding: RuntimeEnabledFeatures ServerTimingEnabled: type: bool defaultValue: DEFAULT_SERVER_TIMING_ENABLED humanReadableName: "Server Timing" humanReadableDescription: "Enable Server Timing API" category: experimental webcoreBinding: RuntimeEnabledFeatures webcoreName: serverTimingEnabled CSSCustomPropertiesAndValuesEnabled: type: bool defaultValue: false humanReadableName: "CSS Custom Properties and Values API" humanReadableDescription: "Enable CSS Custom Properties and Values API" webcoreBinding: RuntimeEnabledFeatures category: experimental CSSPaintingAPIEnabled: type: bool defaultValue: DEFAULT_CSS_PAINTING_API_ENABLED humanReadableName: "CSS Painting API" humanReadableDescription: "Enable the CSS Painting API" webcoreBinding: RuntimeEnabledFeatures category: experimental condition: ENABLE(CSS_PAINTING_API) CSSTypedOMEnabled: type: bool defaultValue: DEFAULT_CSS_TYPED_OM_ENABLED humanReadableName: "CSS Typed OM" humanReadableDescription: "Enable the CSS Typed OM" webcoreBinding: RuntimeEnabledFeatures category: experimental condition: ENABLE(CSS_TYPED_OM) WebSQLDisabled: type: bool defaultValue: true humanReadableName: "Disable Web SQL" humanReadableDescription: "Disable Web SQL" webcoreBinding: RuntimeEnabledFeatures category: experimental ProcessSwapOnCrossSiteNavigationEnabled: type: bool defaultValue: DEFAULT_PROCESS_SWAP_ON_CROSS_SITE_NAVIGATION_ENABLED humanReadableName: "Swap Processes on Cross-Site Navigation" humanReadableDescription: "Swap WebContent Processes on cross-site navigations" category: experimental webcoreBinding: none MediaCapabilitiesExtensionsEnabled: type: bool defaultValue: true humanReadableName: "Media Capabilities Extensions" humanReadableDescription: "Media Capabilities Extensions" category: experimental HDRMediaCapabilitiesEnabled: type: bool defaultValue: true humanReadableName: "HDR Media Capabilities" humanReadableDescription: "HDR Media Capabilities" category: experimental ResizeObserverEnabled: type: bool defaultValue: true humanReadableName: "Resize Observer" humanReadableDescription: "Enable Resize Observer support" category: experimental condition: ENABLE(RESIZE_OBSERVER) AdClickAttributionEnabled: type: bool defaultValue: false humanReadableName: "Ad Click Attribution" humanReadableDescription: "Enable Ad Click Attribution for Cross-Site Link Navigations" webcoreBinding: RuntimeEnabledFeatures category: experimental AdClickAttributionDebugModeEnabled: type: bool defaultValue: false humanReadableName: "Ad Click Attribution Debug Mode" humanReadableDescription: "Enable Ad Click Attribution Debug Mode" webcoreBinding: RuntimeEnabledFeatures category: experimental FetchAPIKeepAliveEnabled: type: bool defaultValue: true humanReadableName: "Fetch API Request KeepAlive" humanReadableDescription: "Enable Fetch API Request KeepAlive" category: experimental webcoreBinding: RuntimeEnabledFeatures webcoreName: fetchAPIKeepAliveEnabled CSSShadowPartsEnabled: type: bool defaultValue: true humanReadableName: "CSS Shadow Parts" humanReadableDescription: "Enable CSS Shadow Parts" category: experimental webcoreBinding: RuntimeEnabledFeatures GenericCueAPIEnabled: type: bool defaultValue: true condition: ENABLE(VIDEO) humanReadableName: "Generic Text Track Cue API" humanReadableDescription: "Enable Generic Text Track Cue API" category: experimental webcoreName: genericCueAPIEnabled CaptureVideoInUIProcessEnabled: type: bool defaultValue: false humanReadableName: "Capture video in UI Process" humanReadableDescription: "Enable video capture in UI Process" category: experimental webcoreBinding: none condition: ENABLE(MEDIA_STREAM) CaptureVideoInGPUProcessEnabled: type: bool defaultValue: defaultCaptureVideoInGPUProcessEnabled() humanReadableName: "Capture video in GPU Process" humanReadableDescription: "Enable video capture in GPU Process" category: internal webcoreBinding: none condition: ENABLE(MEDIA_STREAM) AspectRatioOfImgFromWidthAndHeightEnabled: type: bool defaultValue: true humanReadableName: "Aspect ratio of from width and height" humanReadableDescription: "Map HTML attributes width/height to the default aspect ratio of " category: experimental # For internal features: # The type should be boolean. # You must provide a humanReadableName and humanReadableDescription for all debug features. They # are the text exposed to the user from the WebKit client. ExperimentalPlugInSandboxProfilesEnabled: type: bool defaultValue: false humanReadableName: "Sandbox Plug-Ins" humanReadableDescription: "Enable Plug-In sandboxing" category: internal webcoreBinding: RuntimeEnabledFeatures webcoreName: experimentalPlugInSandboxProfilesEnabled ItpDebugModeEnabled: type: bool defaultValue: false humanReadableName: "ITP Debug Mode" humanReadableDescription: "Intelligent Tracking Prevention Debug Mode" webcoreBinding: RuntimeEnabledFeatures IsITPDatabaseEnabled: type: bool defaultValue: true humanReadableName: "ITP Database Backend" humanReadableDescription: "Enable Intelligent Tracking Prevention Database Backend" webcoreBinding: RuntimeEnabledFeatures category: internal ReadableByteStreamAPIEnabled: type: bool defaultValue: false humanReadableName: "ReadableByteStream" humanReadableDescription: "Enable Readable Byte Streams" category: experimental webcoreBinding: RuntimeEnabledFeatures ServiceWorkersEnabled: type: bool defaultValue: DEFAULT_SERVICE_WORKERS_ENABLED humanReadableName: "Service Workers" humanReadableDescription: "Enable Service Workers" category: internal webcoreBinding: RuntimeEnabledFeatures webcoreName: serviceWorkerEnabled condition: ENABLE(SERVICE_WORKER) AsyncFrameScrollingEnabled: type: bool defaultValue: defaultAsyncFrameScrollingEnabled() humanReadableName: "Async Frame Scrolling" humanReadableDescription: "Perform frame scrolling off the main thread" category: internal AsyncOverflowScrollingEnabled: type: bool defaultValue: defaultAsyncOverflowScrollingEnabled() humanReadableName: "Async Overflow Scrolling" humanReadableDescription: "Perform overflow scrolling off the main thread" category: internal LegacyOverflowScrollingTouchEnabled: type: bool defaultValue: true humanReadableName: "Legacy -webkit-overflow-scrolling property" humanReadableDescription: "Support the legacy -webkit-overflow-scrolling CSS property" condition: ENABLE(OVERFLOW_SCROLLING_TOUCH) category: internal FullScreenEnabled: type: bool defaultValue: false condition: ENABLE(FULLSCREEN_API) hidden: EXPERIMENTAL_FULLSCREEN_API_HIDDEN humanReadableName: "Fullscreen API" humanReadableDescription: "Fullscreen API" category: internal AriaReflectionEnabled: type: bool defaultValue: true humanReadableName: "ARIA Reflection" humanReadableDescription: "ARIA Reflection support" category: internal webcoreBinding: RuntimeEnabledFeatures WebAPIStatisticsEnabled: type: bool defaultValue: false humanReadableName: "Web API Statistics" humanReadableDescription: "Enable Web API Statistics" webcoreBinding: RuntimeEnabledFeatures category: internal SecureContextChecksEnabled: type: bool defaultValue: true humanReadableName: "Secure Context Checks" humanReadableDescription: "Allow access to HTTPS-only Web APIs over HTTP" webcoreBinding: RuntimeEnabledFeatures category: internal SelectionAcrossShadowBoundariesEnabled: type: bool defaultValue: true humanReadableName: "Selection across shadow DOM" humanReadableDescription: "Allow user-initiated selection across shadow DOM boundaries" category: internal webcoreName: selectionAcrossShadowBoundariesEnabled FasterClicksEnabled: type: bool defaultValue: true condition: PLATFORM(IOS_FAMILY) humanReadableName: "Fast clicks" humanReadableDescription: "Support faster clicks on zoomable pages" webcoreBinding: none category: internal PreferFasterClickOverDoubleTap: type: bool defaultValue: DEFAULT_PREFER_FASTER_CLICK_OVER_DOUBLE_TAP condition: PLATFORM(IOS_FAMILY) humanReadableName: "Fast clicks beat DTTZ" humanReadableDescription: "Prefer a faster click over a double tap" webcoreBinding: none category: internal ZoomOnDoubleTapWhenRoot: type: bool defaultValue: false condition: PLATFORM(IOS_FAMILY) humanReadableName: "DTTZ also when root" humanReadableDescription: "Double taps zoom, even if we dispatched a click on the root nodes" webcoreBinding: none category: internal AlwaysZoomOnDoubleTap: type: bool defaultValue: false condition: PLATFORM(IOS_FAMILY) humanReadableName: "DTTZ always" humanReadableDescription: "Double taps zoom, even if we dispatched a click anywhere" webcoreBinding: none category: internal InputTypeColorEnabled: type: bool defaultValue: DEFAULT_INPUT_TYPE_COLOR_ENABLED humanReadableName: "Color Inputs" humanReadableDescription: "Enable input elements of type color" category: internal condition: ENABLE(INPUT_TYPE_COLOR) InputTypeDateEnabled: type: bool defaultValue: DEFAULT_INPUT_TYPE_DATE_ENABLED humanReadableName: "Date Input" humanReadableDescription: "Enable input elements of type date" category: internal condition: ENABLE(INPUT_TYPE_DATE) InputTypeDateTimeLocalEnabled: type: bool defaultValue: DEFAULT_INPUT_TYPE_DATETIMELOCAL_ENABLED humanReadableName: "datetime-local Inputs" humanReadableDescription: "Enable input elements of type datetime-local" category: internal condition: ENABLE(INPUT_TYPE_DATETIMELOCAL) InputTypeMonthEnabled: type: bool defaultValue: DEFAULT_INPUT_TYPE_MONTH_ENABLED humanReadableName: "Month Input" humanReadableDescription: "Enable input elements of type month" category: internal condition: ENABLE(INPUT_TYPE_MONTH) InputTypeTimeEnabled: type: bool defaultValue: DEFAULT_INPUT_TYPE_TIME_ENABLED humanReadableName: "Time Input" humanReadableDescription: "Enable input elements of type time" category: internal condition: ENABLE(INPUT_TYPE_TIME) InputTypeWeekEnabled: type: bool defaultValue: DEFAULT_INPUT_TYPE_WEEK_ENABLED humanReadableName: "Week Input" humanReadableDescription: "Enable input elements of type week" category: internal condition: ENABLE(INPUT_TYPE_WEEK) DateTimeInputsEditableComponentsEnabled: type: bool defaultValue: DEFAULT_DATE_TIME_INPUTS_EDITABLE_COMPONENTS_ENABLED humanReadableName: "Date/Time inputs have editable components" humanReadableDescription: "Enable multiple editable components in date/time inputs" category: internal webcoreName: dateTimeInputsEditableComponentsEnabled condition: ENABLE(DATE_AND_TIME_INPUT_TYPES) DataListElementEnabled: type: bool defaultValue: DEFAULT_DATALIST_ELEMENT_ENABLED humanReadableName: "DataList Element" humanReadableDescription: "Enable datalist elements" category: internal webcoreBinding: RuntimeEnabledFeatures condition: ENABLE(DATALIST_ELEMENT) LayoutFormattingContextEnabled: type: bool defaultValue: false humanReadableName: "Full next-generation layout (LFC)" humanReadableDescription: "Enable full next-generation layout (LFC)" category: internal webcoreBinding: RuntimeEnabledFeatures condition: ENABLE(LAYOUT_FORMATTING_CONTEXT) LayoutFormattingContextIntegrationEnabled: type: bool defaultValue: true humanReadableName: "Next-generation line layout integration (LFC)" humanReadableDescription: "Enable next-generation line layout integration (LFC)" category: internal webcoreBinding: RuntimeEnabledFeatures condition: ENABLE(LAYOUT_FORMATTING_CONTEXT) CaptureAudioInUIProcessEnabled: type: bool defaultValue: defaultCaptureAudioInUIProcessEnabled() humanReadableName: "Capture audio in UI Process" humanReadableDescription: "Enable audio capture in UI Process" category: internal webcoreBinding: none condition: ENABLE(MEDIA_STREAM) CaptureAudioInGPUProcessEnabled: type: bool defaultValue: defaultCaptureAudioInGPUProcessEnabled() humanReadableName: "Capture audio in GPU Process" humanReadableDescription: "Enable audio capture in GPU Process" category: internal webcoreBinding: none condition: ENABLE(MEDIA_STREAM) RenderCanvasInGPUProcessEnabled: type: bool defaultValue: defaultRenderCanvasInGPUProcessEnabled() humanReadableName: "Render canvas in GPU Process" humanReadableDescription: "Enable canvas rendering in GPU Process" category: internal webcoreBinding: none RestrictedHTTPResponseAccess: type: bool defaultValue: true humanReadableName: "Filter HTTP Response for Web Processes" humanReadableDescription: "Enable HTTP Response filtering for Web Processes" category: internal webcoreBinding: RuntimeEnabledFeatures UndoManagerAPIEnabled: type: bool defaultValue: false humanReadableName: "UndoManager DOM API" humanReadableDescription: "Enable the UndoManager DOM API" category: internal webcoreBinding: RuntimeEnabledFeatures CSSLogicalEnabled: type: bool defaultValue: false humanReadableName: "CSS Logical Properties and Values" humanReadableDescription: "Enable CSS Logical Properties and Values" webcoreBinding: RuntimeEnabledFeatures category: internal LineHeightUnitsEnabled: type: bool defaultValue: false humanReadableName: "lh / rlh units" humanReadableDescription: "Enable the lh and lhr units" webcoreBinding: RuntimeEnabledFeatures category: internal DOMPasteAccessRequestsEnabled: type: bool defaultValue: DEFAULT_DOM_PASTE_ACCESS_REQUESTS_ENABLED humanReadableName: "DOM Paste Access Requests" humanReadableDescription: "Enable DOM Paste Access Requests" category: internal MouseEventsSimulationEnabled: type: bool defaultValue: false humanReadableName: "Mouse events simulation" humanReadableDescription: "Enable mouse events dispatch along with touch events on iOS" webcoreBinding: RuntimeEnabledFeatures category: internal condition: ENABLE(TOUCH_EVENTS) TextAutosizingUsesIdempotentMode: type: bool defaultValue: defaultTextAutosizingUsesIdempotentMode() humanReadableName: "Idempotent Text Autosizing" humanReadableDescription: "Use idempotent text autosizing mode" category: internal condition: ENABLE(TEXT_AUTOSIZING) AllowViewportShrinkToFitContent: type: bool defaultValue: true humanReadableName: "Allow Viewport Shrink to Fit Content" humanReadableDescription: "Allow the viewport shrink to fit content heuristic when appropriate" category: internal condition: PLATFORM(IOS_FAMILY) EnterKeyHintEnabled: type: bool defaultValue: DEFAULT_ENTER_KEY_HINT_ENABLED humanReadableName: "Enter Key Hint" humanReadableDescription: "Enable the enterKeyHint HTML attribute" category: internal ReferrerPolicyAttributeEnabled: type: bool defaultValue: true humanReadableName: "Referrer Policy attribute" humanReadableDescription: "Enable Referrer Policy attribute" category: experimental webcoreBinding: RuntimeEnabledFeatures PageAtRuleSupportEnabled: type: bool defaultValue: false humanReadableName: "@page CSS at-rule support" humanReadableDescription: "Enable @page support" category: experimental webcoreBinding: RuntimeEnabledFeatures CoreMathMLEnabled: type: bool defaultValue: DEFAULT_CORE_MATHML_ENABLED humanReadableName: "MathML Core" humanReadableDescription: "Disable features removed from the MathML Core spec." category: experimental ApplePayRemoteUIEnabled: category: internal condition: ENABLE(APPLE_PAY_REMOTE_UI) defaultValue: true humanReadableDescription: "Enable Apple Pay Remote UI" humanReadableName: "Apple Pay Remote UI" type: bool LinkPrefetchEnabled: type: bool defaultValue: false humanReadableName: "LinkPrefetch" humanReadableDescription: "Enable LinkedPrefetch" webcoreBinding: RuntimeEnabledFeatures category: experimental LinkPreloadResponsiveImagesEnabled: type: bool defaultValue: false humanReadableName: "Link preload responsive images" humanReadableDescription: "Enable link preload responsive images" webcoreBinding: RuntimeEnabledFeatures category: experimental IsNSURLSessionWebSocketEnabled: type: bool defaultValue: false humanReadableName: "NSURLSession WebSocket" humanReadableDescription: "Use NSURLSession WebSocket API" category: experimental webcoreBinding: RuntimeEnabledFeatures condition: HAVE(NSURLSESSION_WEBSOCKET) LazyImageLoadingEnabled: type: bool defaultValue: false humanReadableName: "Lazy Image Loading" humanReadableDescription: "Enable Lazy Image Loading support" webcoreBinding: RuntimeEnabledFeatures category: experimental IsThirdPartyCookieBlockingDisabled: type: bool defaultValue: false humanReadableName: "Disable Full 3rd-Party Cookie Blocking (ITP)" humanReadableDescription: "Disable full third-party cookie blocking when Intelligent Tracking Prevention is enabled" category: experimental IsFirstPartyWebsiteDataRemovalDisabled: type: bool defaultValue: false humanReadableName: "Disable Removal of Non-Cookie Data After 7 Days of No User Interaction (ITP)" humanReadableDescription: "Disable removal of all non-cookie website data after seven days of no user interaction when Intelligent Tracking Prevention is enabled" category: experimental IsFirstPartyWebsiteDataRemovalLiveOnTestingEnabled: type: bool defaultValue: false humanReadableName: "[ITP Live-On] 1 Hour Timeout For Non-Cookie Data Removal" humanReadableDescription: "Remove all non-cookie website data after just one hour of no user interaction when Intelligent Tracking Prevention is enabled" category: internal IsFirstPartyWebsiteDataRemovalReproTestingEnabled: type: bool defaultValue: false humanReadableName: "[ITP Repro] 30 Second Timeout For Non-Cookie Data Removal" humanReadableDescription: "Remove all non-cookie website data after just 30 seconds of no user interaction when Intelligent Tracking Prevention is enabled" category: internal IsSameSiteStrictEnforcementEnabled: type: bool defaultValue: false humanReadableName: "SameSite strict enforcement (ITP)" humanReadableDescription: "Enable SameSite strict enforcement to mitigate bounce tracking" category: experimental IsLoggedInAPIEnabled: type: bool defaultValue: false humanReadableName: "IsLoggedIn web API" humanReadableDescription: "Enable the proposed IsLoggedIn web API" category: experimental PictureInPictureAPIEnabled: type: bool defaultValue: true condition: ENABLE(PICTURE_IN_PICTURE_API) RemotePlaybackEnabled: category: experimental condition: ENABLE(WIRELESS_PLAYBACK_TARGET) type: bool defaultValue: true humanReadableName: "Remote Playback API" humanReadableDescription: "Enable Remote Playback API" UseGPUProcessForMedia: type: bool defaultValue: defaultUseGPUProcessForMedia() condition: ENABLE(GPU_PROCESS) humanReadableName: "Media in GPU Process" humanReadableDescription: "Do all media loading and playback in the GPU Process" category: internal webcoreName: useGPUProcessForMedia DialogElementEnabled: type: bool defaultValue: false humanReadableName: "Dialog Element" humanReadableDescription: "Enable the Dialog Element" webcoreBinding: RuntimeEnabledFeatures category: experimental IsAccessibilityIsolatedTreeEnabled: type: bool defaultValue: false humanReadableName: "Isolated Accessibility Tree Mode" humanReadableDescription: "Enable an accessibility hierarchy for VoiceOver that can be accessed on a secondary thread for improved performance" webcoreBinding: RuntimeEnabledFeatures category: experimental condition: ENABLE(ACCESSIBILITY_ISOLATED_TREE) WebShareFileAPIEnabled: type: bool defaultValue: false humanReadableName: "Web Share API Level 2" humanReadableDescription: "Enable level 2 of Web Share API" webcoreBinding: RuntimeEnabledFeatures category: experimental IncrementalPDFLoadingEnabled: type: bool defaultValue: defaultIncrementalPDFEnabled() humanReadableName: "Incremental PDF Loading" humanReadableDescription: "Enable Incremental PDF Loading on supported platforms" category: experimental condition: HAVE(INCREMENTAL_PDF_APIS) webcoreBinding: RuntimeEnabledFeatures WebXREnabled: type: bool defaultValue: defaultWebXREnabled() humanReadableName: "WebXR Device API" humanReadableDescription: "Adds support for accessing virtual reality (VR) and augmented reality (AR) devices, including sensors and head-mounted displays, on the Web" category: experimental webcoreBinding: RuntimeEnabledFeatures condition: ENABLE(WEBXR) WritableStreamAPIEnabled: type: bool defaultValue: false humanReadableName: "WritableStream API" humanReadableDescription: "Enable Writable Stream API" category: experimental webcoreBinding: RuntimeEnabledFeatures # Deprecated ICECandidateFilteringEnabled: type: bool defaultValue: true MockCaptureDevicesEnabled: type: bool defaultValue: DEFAULT_MOCK_CAPTURE_DEVICES_ENABLED condition: ENABLE(MEDIA_STREAM) MediaCaptureRequiresSecureConnection: type: bool defaultValue: true condition: ENABLE(MEDIA_STREAM) CoreImageAcceleratedFilterRenderEnabled: type: bool defaultValue: false humanReadableName: "CoreImage-Accelerated Filter Rendering" humanReadableDescription: "Accelerated CSS and SVG filter rendering using CoreImage" category: experimental condition: ENABLE(CORE_IMAGE_ACCELERATED_FILTER_RENDER)