2024

Jun 2024

May 2024

Browsers released:

• {'browser':'firefox','version':'126'}

These Features became stable across all major browsers:

• css.properties.writing-mode.vertical_oriented_form_controls
• html.elements.input.type_range.vertical_orientation

Apr 2024

Browsers released:

• {'browser':'chrome','version':'124'}
• {'browser':'edge','version':'124'}
• {'browser':'firefox','version':'125'}

These Features became stable across all major browsers:

• api.AbortSignal.any_static
• api.DOMMatrixReadOnly.scaleNonUniform
• api.Element.ariaDescription
• api.Element.checkVisibility
• api.Navigator.wakeLock
• api.SVGFESpecularLightingElement.kernelUnitLengthX
• api.SVGFESpecularLightingElement.kernelUnitLengthY
• api.WakeLock
• api.WakeLockSentinel
• css.properties.paint-order
• css.properties.text-decoration-thickness.percentage
• css.properties.text-wrap
• css.selectors.backdrop.inherit_from_originating_element
• http.headers.Permissions-Policy.screen-wake-lock
• javascript.builtins.ArrayBuffer.detached
• javascript.builtins.ArrayBuffer.transfer
• javascript.builtins.ArrayBuffer.transferToFixedLength
• javascript.builtins.Map.groupBy
• javascript.builtins.Object.groupBy
• javascript.builtins.Promise.withResolvers
• svg.elements.feSpecularLighting.kernelUnitLength
• webassembly.extended-constant-expressions

Mar 2024

Browsers released:

• {'browser':'chrome','version':'123'}
• {'browser':'edge','version':'123'}
• {'browser':'firefox','version':'124'}
• {'browser':'safari','version':'17.4'}
• {'browser':'safari_ios','version':'17.4'}

These Features became stable across all major browsers:

• api.HTMLTemplateElement.shadowRootMode
• html.elements.template.shadowrootmode

Feb 2024

Browsers released:

• {'browser':'chrome','version':'122'}
• {'browser':'edge','version':'122'}
• {'browser':'firefox','version':'123'}

These Features became stable across all major browsers:

• api.HTMLVideoElement.disablePictureInPicture
• css.properties.offset-path.ray
• css.properties.offset-path.url
• css.properties.offset-position
• css.types.basic-shape.rect
• css.types.basic-shape.xywh
• css.types.ray
• html.elements.video.disablepictureinpicture
• javascript.builtins.Array.fromAsync

Jan 2024

Browsers released:

• {'browser':'chrome','version':'121'}
• {'browser':'edge','version':'121'}
• {'browser':'firefox','version':'122'}
• {'browser':'safari','version':'17.3'}
• {'browser':'safari_ios','version':'17.3'}

These Features became stable across all major browsers:

• api.CanvasRenderingContext2D.reset
• api.FontFaceSet.check
• api.HTMLIFrameElement.loading
• api.HTMLLinkElement.imageSizes
• api.HTMLLinkElement.imageSrcset
• api.HTMLMediaElement.preservesPitch
• api.OffscreenCanvasRenderingContext2D.reset
• api.SVGImageElement.crossOrigin
• api.URL.canParse_static
• css.at-rules.media.scripting
• css.properties.background-clip.text
• css.properties.counter-set
• css.properties.mask-clip
• css.properties.mask-composite
• css.properties.mask-image
• css.properties.mask-mode
• css.properties.mask-origin
• css.properties.mask-position
• css.properties.mask-repeat
• css.properties.mask-size
• css.selectors.dir
• css.selectors.has
• css.selectors.nesting
• css.types.easing-function.linear-function
• css.types.exp
• css.types.hypot
• css.types.length.cap
• css.types.log
• css.types.pow
• css.types.sqrt
• html.elements.iframe.loading
• html.elements.link.imagesizes
• html.elements.link.imagesrcset
• svg.elements.image.crossorigin

2023

Dec 2023

Browsers released:

• {'browser':'chrome','version':'120'}
• {'browser':'edge','version':'120'}
• {'browser':'firefox','version':'121'}
• {'browser':'safari','version':'17.2'}
• {'browser':'safari_ios','version':'17.2'}

These Features became stable across all major browsers:

• api.BeforeUnloadEvent.returnValue
• api.Navigator.userActivation
• api.PublicKeyCredential.authenticatorAttachment
• api.ToggleEvent
• api.UserActivation
• css.properties.clip-path.fill-box
• css.properties.clip-path.stroke-box
• css.selectors.user-invalid
• css.selectors.user-valid
• css.types.length.lh
• css.types.length.rlh

Nov 2023

Browsers released:

• {'browser':'edge','version':'119'}
• {'browser':'firefox','version':'120'}

These Features became stable across all major browsers:

• api.AuthenticatorAttestationResponse.getAuthenticatorData
• api.AuthenticatorAttestationResponse.getPublicKey
• api.AuthenticatorAttestationResponse.getPublicKeyAlgorithm
• api.AuthenticatorAttestationResponse.getTransports
• api.Document.hasStorageAccess
• api.Document.requestStorageAccess
• api.Element.ariaAtomic
• api.Element.ariaAutoComplete
• api.Element.ariaBusy
• api.Element.ariaChecked
• api.Element.ariaColCount
• api.Element.ariaColIndex
• api.Element.ariaColSpan
• api.Element.ariaCurrent
• api.Element.ariaDisabled
• api.Element.ariaExpanded
• api.Element.ariaHasPopup
• api.Element.ariaHidden
• api.Element.ariaInvalid
• api.Element.ariaKeyShortcuts
• api.Element.ariaLabel
• api.Element.ariaLevel
• api.Element.ariaLive
• api.Element.ariaModal
• api.Element.ariaMultiLine
• api.Element.ariaMultiSelectable
• api.Element.ariaOrientation
• api.Element.ariaPlaceholder
• api.Element.ariaPosInSet
• api.Element.ariaPressed
• api.Element.ariaReadOnly
• api.Element.ariaRelevant
• api.Element.ariaRequired
• api.Element.ariaRoleDescription
• api.Element.ariaRowCount
• api.Element.ariaRowIndex
• api.Element.ariaRowSpan
• api.Element.ariaSelected
• api.Element.ariaSetSize
• api.Element.ariaSort
• api.Element.ariaValueMax
• api.Element.ariaValueMin
• api.Element.ariaValueNow
• api.Element.ariaValueText
• api.Element.role
• api.ElementInternals.ariaAtomic
• api.ElementInternals.ariaAutoComplete
• api.ElementInternals.ariaBusy
• api.ElementInternals.ariaChecked
• api.ElementInternals.ariaColCount
• api.ElementInternals.ariaColIndex
• api.ElementInternals.ariaColSpan
• api.ElementInternals.ariaCurrent
• api.ElementInternals.ariaDisabled
• api.ElementInternals.ariaExpanded
• api.ElementInternals.ariaHasPopup
• api.ElementInternals.ariaHidden
• api.ElementInternals.ariaInvalid
• api.ElementInternals.ariaKeyShortcuts
• api.ElementInternals.ariaLabel
• api.ElementInternals.ariaLevel
• api.ElementInternals.ariaLive
• api.ElementInternals.ariaModal
• api.ElementInternals.ariaMultiLine
• api.ElementInternals.ariaMultiSelectable
• api.ElementInternals.ariaOrientation
• api.ElementInternals.ariaPlaceholder
• api.ElementInternals.ariaPosInSet
• api.ElementInternals.ariaPressed
• api.ElementInternals.ariaReadOnly
• api.ElementInternals.ariaRelevant
• api.ElementInternals.ariaRequired
• api.ElementInternals.ariaRoleDescription
• api.ElementInternals.ariaRowCount
• api.ElementInternals.ariaRowIndex
• api.ElementInternals.ariaRowSpan
• api.ElementInternals.ariaSelected
• api.ElementInternals.ariaSetSize
• api.ElementInternals.ariaSort
• api.ElementInternals.ariaValueMax
• api.ElementInternals.ariaValueMin
• api.ElementInternals.ariaValueNow
• api.ElementInternals.ariaValueText
• api.ElementInternals.role
• api.TextMetrics.alphabeticBaseline
• api.TextMetrics.hangingBaseline
• api.TextMetrics.ideographicBaseline
• css.properties.clear.inline-end
• css.properties.clear.inline-start
• css.properties.float.inline-end
• css.properties.float.inline-start
• css.properties.resize.block
• css.properties.resize.inline
• css.properties.transform-box.border-box
• html.elements.search
• javascript.builtins.String.isWellFormed
• javascript.builtins.String.toWellFormed
• webextensions.api.action.openPopup

Oct 2023

Browsers released:

• {'browser':'chrome','version':'119'}
• {'browser':'edge','version':'118'}
• {'browser':'firefox','version':'119'}
• {'browser':'safari','version':'17.1'}
• {'browser':'safari_ios','version':'17.1'}

These Features became stable across all major browsers:

• api.CSSContainerRule.containerName
• api.CSSContainerRule.containerQuery
• api.CSSCounterStyleRule
• api.CanvasRenderingContext2D.drawImage.SVGImageElement_source_image
• api.CredentialsContainer.preventSilentAccess
• api.CustomElementRegistry.getName
• api.DeviceMotionEvent
• api.DeviceOrientationEvent
• api.Headers.getSetCookie
• api.Response.json_static
• api.Selection.removeRange
• api.StorageManager.estimate
• api.URLSearchParams.size
• api.Window.devicemotion_event
• api.Window.deviceorientation_event
• css.at-rules.counter-style
• css.at-rules.font-face.size-adjust
• css.at-rules.media.overflow-block
• css.at-rules.media.overflow-inline
• css.at-rules.media.update
• css.at-rules.supports.font-format
• css.at-rules.supports.font-tech
• css.properties.contain-intrinsic-block-size
• css.properties.contain-intrinsic-height
• css.properties.contain-intrinsic-inline-size
• css.properties.contain-intrinsic-size
• css.properties.contain-intrinsic-width
• css.properties.font-variant-position
• css.properties.grid-template-columns.subgrid
• css.properties.grid-template-rows.subgrid
• css.properties.hyphenate-character
• css.properties.hyphens
• css.properties.list-style-type.ethiopic-halehame
• css.properties.list-style-type.ethiopic-halehame-am
• javascript.builtins.RegExp.unicodeSets
• mathml.elements.mtd.columnspan
• mathml.elements.mtd.rowspan
• webextensions.api.scripting.executeScript.InjectionResult

Sep 2023

Browsers released:

• {'browser':'chrome','version':'117'}
• {'browser':'edge','version':'117'}
• {'browser':'firefox','version':'118'}
• {'browser':'safari','version':'17'}
• {'browser':'safari_ios','version':'17'}

These Features became stable across all major browsers:

• api.CSSStyleRule.cssRules
• api.CSSStyleRule.deleteRule
• api.CSSStyleRule.insertRule
• api.CanvasRenderingContext2D.getContextAttributes
• api.RTCEncodedAudioFrame
• api.RTCEncodedVideoFrame
• css.properties.math-style
• css.properties.offset-anchor
• css.types.color.lab.mixed_type_parameters
• css.types.color.lch.mixed_type_parameters
• css.types.color.oklab.mixed_type_parameters
• css.types.color.oklch.mixed_type_parameters
• http.headers.Range.cors_safe

Aug 2023

Browsers released:

• {'browser':'chrome','version':'116'}
• {'browser':'edge','version':'116'}
• {'browser':'firefox','version':'117'}

These Features became stable across all major browsers:

• api.HTMLInputElement.dirName
• api.HTMLTextAreaElement.dirName
• api.MediaDevices.enumerateDevices
• api.TextMetrics.fontBoundingBoxAscent
• api.TextMetrics.fontBoundingBoxDescent
• css.properties.animation-composition
• css.properties.display.multi-keyword_values
• css.selectors.first
• html.elements.input.dirname
• html.elements.textarea.dirname
• javascript.builtins.Array.toReversed
• javascript.builtins.Array.toSorted
• javascript.builtins.Array.toSpliced
• javascript.builtins.Array.with
• javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_roundingIncrement_parameter
• javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_roundingMode_parameter
• javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_roundingPriority_parameter
• javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_signDisplay_parameter.negative
• javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_trailingZeroDisplay_parameter
• javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_useGrouping_parameter.string_values
• javascript.builtins.Intl.NumberFormat.format.number_parameter-string_decimal
• javascript.builtins.Intl.NumberFormat.formatRange
• javascript.builtins.Intl.NumberFormat.formatRangeToParts
• javascript.builtins.Intl.PluralRules.selectRange
• javascript.builtins.TypedArray.toReversed
• javascript.builtins.TypedArray.toSorted
• javascript.builtins.TypedArray.with
• webextensions.api.runtime.setUninstallURL
• webextensions.api.storage.session

Jul 2023

Browsers released:

• {'browser':'chrome','version':'115'}
• {'browser':'edge','version':'115'}
• {'browser':'firefox','version':'116'}
• {'browser':'safari','version':'16.6'}
• {'browser':'safari_ios','version':'16.6'}

These Features became stable across all major browsers:

• api.SharedWorker.SharedWorker.ecmascript_modules
• api.Worker.Worker.ecmascript_modules
• api.Worklet.ecmascript_modules
• css.properties.-webkit-text-security
• css.types.calc-constant.NaN
• css.types.calc-constant.infinity
• javascript.operators.import.worker_support
• javascript.statements.import.service_worker_support
• javascript.statements.import.worker_support

Jun 2023

Browsers released:

• {'browser':'edge','version':'114'}
• {'browser':'firefox','version':'114'}

These Features became stable across all major browsers:

• api.CompressionStream
• api.DecompressionStream
• api.HTMLInputElement.cancel_event
• api.RTCPeerConnection.connectionState
• api.RTCPeerConnection.connectionstatechange_event
• api.RTCPeerConnection.sctp
• api.RTCRtpReceiver.getCapabilities_static
• api.RTCRtpSender.getCapabilities_static
• api.RTCRtpSender.setStreams
• api.RTCSctpTransport
• api.RTCStatsReport.type_media-source
• api.RTCStatsReport.type_peer-connection
• css.properties.background-image.image-set
• css.properties.content.gradient
• css.selectors.nth-child.of_syntax
• css.selectors.nth-last-child.of_syntax
• css.types.color.color
• css.types.color.color-mix
• css.types.color.lab
• css.types.color.lch
• css.types.color.oklab
• css.types.color.oklch
• css.types.image.image-set
• webextensions.api.declarativeNetRequest.MAX_NUMBER_OF_DYNAMIC_AND_SESSION_RULES
• webextensions.api.declarativeNetRequest.MAX_NUMBER_OF_ENABLED_STATIC_RULESETS
• webextensions.api.declarativeNetRequest.MAX_NUMBER_OF_STATIC_RULESETS
• webextensions.api.declarativeNetRequest.Redirect
• webextensions.api.declarativeNetRequest.ResourceType
• webextensions.api.declarativeNetRequest.Rule
• webextensions.api.declarativeNetRequest.RuleAction
• webextensions.api.declarativeNetRequest.RuleCondition
• webextensions.api.declarativeNetRequest.URLTransform
• webextensions.api.declarativeNetRequest.getDynamicRules
• webextensions.api.declarativeNetRequest.getEnabledRulesets
• webextensions.api.declarativeNetRequest.getSessionRules
• webextensions.api.declarativeNetRequest.isRegexSupported
• webextensions.api.declarativeNetRequest.updateDynamicRules
• webextensions.api.declarativeNetRequest.updateEnabledRulesets
• webextensions.api.declarativeNetRequest.updateSessionRules
• webextensions.manifest.declarative_net_request
• webextensions.manifest.optional_permissions.declarativeNetRequestFeedback
• webextensions.manifest.permissions.declarativeNetRequest
• webextensions.manifest.permissions.declarativeNetRequestFeedback
• webextensions.manifest.permissions.declarativeNetRequestWithHostAccess

May 2023

Browsers released:

• {'browser':'chrome','version':'114'}
• {'browser':'edge','version':'113'}
• {'browser':'firefox','version':'113'}
• {'browser':'safari','version':'16.5'}
• {'browser':'safari_ios','version':'16.5'}

These Features became stable across all major browsers:

• api.CanvasRenderingContext2D.createConicGradient
• api.CanvasRenderingContext2D.roundRect
• api.FormData.FormData.submitter
• api.HTMLElement.inert
• api.OffscreenCanvasRenderingContext2D.roundRect
• api.Path2D.roundRect
• css.properties.hyphens.language_dutch
• css.properties.hyphens.language_italian
• css.properties.hyphens.language_russian
• css.properties.hyphens.language_swedish
• css.properties.hyphens.language_ukrainian
• html.global_attributes.inert
• webextensions.manifest.background.type

Apr 2023

Browsers released:

• {'browser':'chrome','version':'112'}
• {'browser':'edge','version':'112'}
• {'browser':'firefox','version':'112'}

These Features became stable across all major browsers:

• api.CSSFontFeatureValuesRule
• api.CSSStyleSheet.CSSStyleSheet
• api.CSSStyleSheet.replace
• api.CSSStyleSheet.replaceSync
• api.DedicatedWorkerGlobalScope.cancelAnimationFrame
• api.DedicatedWorkerGlobalScope.messageerror_event
• api.DedicatedWorkerGlobalScope.requestAnimationFrame
• api.Document.adoptedStyleSheets
• api.Document.exitFullscreen
• api.Document.fullscreen
• api.Document.fullscreenElement
• api.Document.fullscreenEnabled
• api.Document.fullscreenchange_event
• api.Document.fullscreenerror_event
• api.Element.fullscreenchange_event
• api.Element.fullscreenerror_event
• api.Element.requestFullscreen
• api.ElementInternals
• api.FileSystemDirectoryHandle
• api.FileSystemFileHandle
• api.FileSystemHandle
• api.FileSystemSyncAccessHandle
• api.GamepadHapticActuator
• api.HTMLCanvasElement.transferControlToOffscreen
• api.HTMLElement.attachInternals
• api.HTMLElement.translate
• api.HTMLFormElement.rel
• api.HTMLFormElement.relList
• api.HTMLSlotElement.assign
• api.InputEvent.isComposing
• api.MessagePort.messageerror_event
• api.Navigator.pdfViewerEnabled
• api.Notification
• api.NotificationEvent
• api.OffscreenCanvas
• api.OffscreenCanvasRenderingContext2D
• api.PerformanceResourceTiming.decodedBodySize
• api.PerformanceResourceTiming.encodedBodySize
• api.PerformanceResourceTiming.serverTiming
• api.PerformanceResourceTiming.transferSize
• api.PerformanceServerTiming
• api.PermissionStatus.change_event
• api.PushEvent
• api.PushManager
• api.PushMessageData
• api.PushSubscription
• api.PushSubscriptionOptions
• api.RTCStatsReport.type_inbound-rtp.trackIdentifier
• api.SVGStyleElement.sheet
• api.Screen.orientation
• api.ScreenOrientation
• api.ServiceWorkerContainer.messageerror_event
• api.ServiceWorkerRegistration.getNotifications
• api.ServiceWorkerRegistration.pushManager
• api.ServiceWorkerRegistration.showNotification
• api.ShadowRoot.adoptedStyleSheets
• api.ShadowRoot.fullscreenElement
• api.ShadowRoot.slotAssignment
• api.StorageManager.getDirectory
• api.Window.messageerror_event
• api.WritableStreamDefaultController.signal
• css.at-rules.font-feature-values
• css.at-rules.media.or_syntax
• css.at-rules.media.range_syntax
• css.properties.font-size.xxx-large
• css.properties.font-synthesis-small-caps
• css.properties.font-synthesis-style
• css.properties.font-synthesis-weight
• css.properties.font-variant.historical-forms
• css.properties.font-variant-alternates
• css.properties.outline
• css.selectors.backdrop.fullscreen
• css.selectors.fullscreen
• css.types.acos
• css.types.asin
• css.types.atan
• css.types.atan2
• css.types.cos
• css.types.sin
• css.types.tan
• html.elements.form.rel
• html.elements.script.type.importmap
• html.global_attributes.translate
• http.headers.Sec-Fetch-Dest
• http.headers.Sec-Fetch-Mode
• http.headers.Sec-Fetch-Site
• http.headers.Sec-Fetch-User
• javascript.classes.static_initialization_blocks
• javascript.operators.import_meta.resolve
• javascript.regular_expressions.lookbehind_assertion
• webassembly.fixed-width-SIMD
• webextensions.api.scripting.RegisteredContentScript
• webextensions.api.scripting.getRegisteredContentScripts
• webextensions.api.scripting.registerContentScripts
• webextensions.api.scripting.unregisterContentScripts
• webextensions.api.scripting.updateContentScripts

Mar 2023

Browsers released:

• {'browser':'chrome','version':'111'}
• {'browser':'edge','version':'111'}
• {'browser':'firefox','version':'111'}
• {'browser':'safari','version':'16.4'}
• {'browser':'safari_ios','version':'16.4'}

These Features became stable across all major browsers:

• api.CSSContainerRule
• api.CSSPageRule.selectorText
• api.HTMLElement.autofocus
• api.MathMLElement.autofocus
• api.RTCPeerConnection.addTransceiver.init_sendEncodings_parameter
• api.SVGElement.autofocus
• css.at-rules.container
• css.at-rules.media.color-gamut
• css.properties.container
• css.properties.container-name
• css.properties.container-type
• css.properties.font-variant.sub
• css.properties.font-variant.super
• css.selectors.autofill
• css.types.length.container_query_length_units
• html.elements.input.type_color.list
• html.global_attributes.autofocus

Feb 2023

Browsers released:

• {'browser':'chrome','version':'110'}
• {'browser':'edge','version':'110'}
• {'browser':'firefox','version':'110'}

These Features became stable across all major browsers:

• api.MathMLElement
• http.headers.Content-Security-Policy.unsafe-hashes
• mathml.elements.maction
• mathml.elements.math
• mathml.elements.merror
• mathml.elements.mfrac
• mathml.elements.mi
• mathml.elements.mmultiscripts
• mathml.elements.mn
• mathml.elements.mo
• mathml.elements.mover
• mathml.elements.mpadded
• mathml.elements.mphantom
• mathml.elements.mroot
• mathml.elements.mrow
• mathml.elements.ms
• mathml.elements.mspace
• mathml.elements.msqrt
• mathml.elements.mstyle
• mathml.elements.msub
• mathml.elements.msubsup
• mathml.elements.msup
• mathml.elements.mtable
• mathml.elements.mtd
• mathml.elements.mtext
• mathml.elements.mtr
• mathml.elements.munder
• mathml.elements.munderover
• mathml.elements.semantics
• mathml.global_attributes.dir
• mathml.global_attributes.displaystyle
• mathml.global_attributes.mathbackground
• mathml.global_attributes.mathcolor
• mathml.global_attributes.mathsize
• svg.global_attributes.requiredExtensions.mathml
• webextensions.api.action
• webextensions.manifest.action
• webextensions.manifest.host_permissions
• webextensions.manifest.manifest_version.v3
• webextensions.manifest.web_accessible_resources.matches
• webextensions.manifest.web_accessible_resources.resources

Jan 2023

Browsers released:

• {'browser':'chrome','version':'109'}
• {'browser':'edge','version':'109'}
• {'browser':'firefox','version':'109'}
• {'browser':'safari','version':'16.3'}
• {'browser':'safari_ios','version':'16.3'}

These Features became stable across all major browsers:

• api.HTMLMediaElement.srcObject
• api.HTMLSourceElement.height
• api.HTMLSourceElement.width
• api.OES_draw_buffers_indexed
• css.properties.align-items.flex_context.last_baseline
• css.properties.align-self.flex_context.last_baseline
• css.types.calc-constant
• css.types.length.vb
• css.types.length.vi
• css.types.length.viewport_percentage_units_dynamic
• css.types.length.viewport_percentage_units_large
• css.types.length.viewport_percentage_units_small
• html.elements.source.height
• html.elements.source.width
• http.headers.Content-Security-Policy.script-src-attr
• http.headers.Content-Security-Policy.script-src-elem
• http.headers.Content-Security-Policy.style-src-attr
• http.headers.Content-Security-Policy.style-src-elem

2022

Dec 2022

Browsers released:

• {'browser':'edge','version':'108'}
• {'browser':'firefox','version':'108'}
• {'browser':'safari','version':'16.2'}
• {'browser':'safari_ios','version':'16.2'}

These Features became stable across all major browsers:

• api.CSSFontPaletteValuesRule
• css.at-rules.font-palette-values
• css.properties.font-palette

Nov 2022

Browsers released:

• {'browser':'chrome','version':'108'}
• {'browser':'firefox','version':'107'}

These Features became stable across all major browsers:

• api.HTMLMetaElement.media
• api.RTCStatsReport.type_inbound-rtp.concealmentEvents
• api.RTCStatsReport.type_inbound-rtp.fecPacketsDiscarded
• api.RTCStatsReport.type_inbound-rtp.fecPacketsReceived
• api.RTCStatsReport.type_inbound-rtp.headerBytesReceived
• api.RTCStatsReport.type_inbound-rtp.insertedSamplesForDeceleration
• api.RTCStatsReport.type_inbound-rtp.removedSamplesForAcceleration
• api.RTCStatsReport.type_inbound-rtp.totalAudioEnergy
• api.RTCStatsReport.type_inbound-rtp.totalSamplesDuration
• css.properties.grid-template-columns.animation
• css.properties.grid-template-rows.animation
• css.types.length.ic

Oct 2022

Browsers released:

• {'browser':'chrome','version':'107'}
• {'browser':'edge','version':'107'}
• {'browser':'firefox','version':'106'}
• {'browser':'safari','version':'16.1'}
• {'browser':'safari_ios','version':'16.1'}

These Features became stable across all major browsers:

• api.AbortSignal.timeout_static
• api.Element.animate.options_composite_parameter
• api.FetchEvent.handled
• api.FetchEvent.resultingClientId
• api.HTMLFormElement.requestSubmit
• api.HTMLInputElement.showPicker
• api.HTMLScriptElement.supports_static
• api.KeyframeEffect.composite
• api.Navigator.permissions
• api.PermissionStatus
• api.Permissions
• api.SharedWorker
• api.SharedWorkerGlobalScope
• api.SpeechSynthesis.voiceschanged_event
• api.SpeechSynthesisErrorEvent.SpeechSynthesisErrorEvent
• api.SpeechSynthesisEvent.SpeechSynthesisEvent
• api.SpeechSynthesisEvent.charLength
• api.TextDecoderStream
• api.TextEncoderStream
• api.WindowClient.navigate
• api.WorkerGlobalScope.fonts
• api.WorkerGlobalScope.importScripts.mime_checks
• css.at-rules.media.forced-colors
• css.at-rules.media.resolution
• css.properties.contain.inline-size
• css.properties.flex-basis.fit-content
• css.properties.flex-basis.max-content
• css.properties.flex-basis.min-content
• css.properties.offset
• css.properties.offset-distance
• css.properties.offset-path.path
• css.properties.offset-rotate
• css.properties.overflow.clip
• css.properties.overflow-x.clip
• css.properties.overflow-y.clip
• css.properties.overscroll-behavior
• css.properties.overscroll-behavior-block
• css.properties.overscroll-behavior-inline
• css.properties.overscroll-behavior-x
• css.properties.overscroll-behavior-y
• css.properties.text-align-last
• css.properties.user-select.all
• css.selectors.modal
• css.types.basic-shape.path
• css.types.overflow.clip
• http.headers.Content-Security-Policy.script-src.wasm-unsafe-eval
• webextensions.manifest.permissions.unlimitedStorage

Sep 2022

Browsers released:

• {'browser':'chrome','version':'106'}
• {'browser':'firefox','version':'105'}
• {'browser':'safari','version':'16'}
• {'browser':'safari_ios','version':'16'}

These Features became stable across all major browsers:

• api.RTCStatsReport.type_inbound-rtp.concealedSamples
• api.RTCStatsReport.type_inbound-rtp.jitterBufferDelay
• api.RTCStatsReport.type_inbound-rtp.jitterBufferEmittedCount
• api.RTCStatsReport.type_inbound-rtp.silentConcealedSamples
• api.RTCStatsReport.type_inbound-rtp.totalSamplesReceived
• api.SVGStyleElement.disabled
• css.properties.rotate
• css.properties.scale
• css.properties.translate
• javascript.builtins.Array.findLast
• javascript.builtins.Array.findLastIndex
• javascript.builtins.TypedArray.findLast
• javascript.builtins.TypedArray.findLastIndex

Aug 2022

Browsers released:

• {'browser':'chrome','version':'104'}
• {'browser':'edge','version':'105'}
• {'browser':'firefox','version':'104'}

These Features became stable across all major browsers:

• api.Performance.measure.measureOptions_parameter
• api.Performance.measure.returns_performancemeasure
• api.PerformanceMeasure.detail
• api.caches.secure_context_required
• css.properties.align-content.flex_context.start_end
• css.properties.backdrop-filter
• css.properties.contain.style
• css.properties.scroll-snap-stop

Jul 2022

Browsers released:

• {'browser':'firefox','version':'103'}
• {'browser':'safari','version':'15.6'}
• {'browser':'safari_ios','version':'15.6'}

These Features became stable across all major browsers:

• api.ReadableStream.pipeThrough
• api.TransformStream
• api.TransformStreamDefaultController
• webextensions.api.scripting
• webextensions.manifest.optional_permissions.scripting
• webextensions.manifest.permissions.scripting

Jun 2022

Browsers released:

• {'browser':'chrome','version':'103'}
• {'browser':'edge','version':'103'}
• {'browser':'firefox','version':'102'}

These Features became stable across all major browsers:

• api.CanvasRenderingContext2D.direction
• api.HTMLElement.focus.options_preventScroll_parameter
• api.Performance.mark.markOptions_parameter
• api.Performance.mark.returns_performancemark
• api.PerformanceMark.PerformanceMark
• api.PerformanceMark.detail
• api.RTCRtpSender.setParameters.parameters_encodings_parameter.maxFramerate
• api.RTCStatsReport.type_outbound-rtp.headerBytesSent
• api.RTCStatsReport.type_outbound-rtp.retransmittedBytesSent
• api.RTCStatsReport.type_outbound-rtp.retransmittedPacketsSent
• api.ReadableStream.pipeTo
• api.WritableStream
• api.WritableStreamDefaultController
• api.WritableStreamDefaultWriter
• css.at-rules.media.dynamic-range
• css.at-rules.media.prefers-contrast
• http.headers.Content-Security-Policy.worker-src
• webassembly.api.Exception
• webassembly.api.Tag
• webassembly.exception-handling
• webextensions.api.storage.StorageArea.onChanged

May 2022

Browsers released:

• {'browser':'chrome','version':'102'}
• {'browser':'edge','version':'102'}
• {'browser':'firefox','version':'101'}
• {'browser':'safari','version':'15.5'}
• {'browser':'safari_ios','version':'15.5'}

These Features became stable across all major browsers:

• api.FetchEvent.preloadResponse
• api.MediaCapabilities.encodingInfo
• api.NavigationPreloadManager
• api.RTCPeerConnection.setConfiguration
• api.ServiceWorkerRegistration.navigationPreload
• css.properties.mix-blend-mode.plus-lighter
• css.properties.scroll-snap-type
• css.types.color.hwb

Apr 2022

Browsers released:

• {'browser':'chrome','version':'101'}
• {'browser':'edge','version':'101'}
• {'browser':'firefox','version':'99'}

These Features became stable across all major browsers:

• api.AbortSignal.abort_static.reason_parameter
• api.AbortSignal.reason
• api.AbortSignal.throwIfAborted
• api.BroadcastChannel
• api.CSSImportRule.layerName
• api.CSSLayerBlockRule
• api.CSSLayerStatementRule
• api.Crypto.randomUUID
• api.Document.securitypolicyviolation_event
• api.HTMLDialogElement
• api.HTMLElement.nonce
• api.HTMLElement.outerText
• api.HTMLImageElement.loading
• api.Lock
• api.LockManager
• api.Navigator.locks
• api.RTCDtlsTransport
• api.RTCPeerConnection.canTrickleIceCandidates
• api.RTCPeerConnection.setRemoteDescription.implicit_rollback
• api.RTCRtpReceiver.transport
• api.RTCRtpSender.transport
• api.RTCStatsReport.type_codec
• api.RTCStatsReport.type_inbound-rtp.packetsDiscarded
• api.RTCStatsReport.type_outbound-rtp.codecId
• api.RTCStatsReport.type_outbound-rtp.nackCount
• api.RTCStatsReport.type_remote-inbound-rtp.codecId
• api.RTCStatsReport.type_remote-outbound-rtp.codecId
• api.ResizeObserverEntry.borderBoxSize
• api.ResizeObserverEntry.contentBoxSize
• api.ResizeObserverSize
• api.SVGElement.nonce
• api.SubmitEvent.submitter
• api.Window.moveTo.relative-multi-screen
• api.Window.open.relative-multi-screen
• api.Window.screenLeft.relative-multi-screen
• api.Window.screenTop.relative-multi-screen
• api.Window.screenX.relative-multi-screen
• api.Window.screenY.relative-multi-screen
• api.WorkerNavigator.locks
• api.WorkerNavigator.mediaCapabilities
• api.createImageBitmap.options_colorSpaceConversion_parameter
• api.createImageBitmap.options_resizeHeight_parameter
• api.createImageBitmap.options_resizeWidth_parameter
• api.reportError
• api.structuredClone
• css.at-rules.import.layer
• css.at-rules.layer
• css.properties.accent-color
• css.properties.align-items.flex_context.start_end
• css.properties.align-self.flex_context.start_end
• css.properties.appearance
• css.properties.backface-visibility
• css.properties.background-attachment.fixed
• css.properties.background-attachment.local
• css.properties.contain
• css.properties.flex-basis.content
• css.properties.hyphenate-character.auto
• css.properties.justify-content.flex_context.start_end
• css.properties.mask
• css.properties.offset-path
• css.properties.overflow-wrap.anywhere
• css.properties.print-color-adjust
• css.properties.scroll-behavior
• css.properties.text-align.match-parent
• css.properties.text-combine-upright
• css.properties.text-decoration-skip-ink
• css.properties.text-emphasis
• css.properties.text-emphasis-color
• css.properties.text-emphasis-position
• css.properties.text-emphasis-style
• css.selectors.backdrop
• css.selectors.focus-visible
• html.elements.dialog
• html.elements.img.loading
• http.headers.Content-Security-Policy.strict-dynamic
• javascript.builtins.Array.at
• javascript.builtins.Intl.DateTimeFormat.DateTimeFormat.options_parameter.options_timeZoneName_parameter.extended_values
• javascript.builtins.Intl.supportedValuesOf
• javascript.builtins.Object.hasOwn
• javascript.builtins.String.at
• javascript.builtins.TypedArray.at
• webextensions.api.runtime.onMessageExternal
• webextensions.manifest.background.persistent
• webextensions.manifest.content_security_policy.extension_pages

Mar 2022

Browsers released:

• {'browser':'chrome','version':'100'}
• {'browser':'edge','version':'100'}
• {'browser':'firefox','version':'98'}
• {'browser':'safari','version':'15.4'}
• {'browser':'safari_ios','version':'15.4'}

These Features became stable across all major browsers:

• api.ImageBitmapRenderingContext.canvas
• css.properties.color-scheme.only_dark
• css.properties.color-scheme.only_light

Feb 2022

Browsers released:

• {'browser':'chrome','version':'99'}
• {'browser':'edge','version':'98'}
• {'browser':'firefox','version':'97'}

These Features became stable across all major browsers:

• api.Navigator.canShare.data_text_parameter
• api.RTCStatsReport.type_remote-inbound-rtp.roundTripTime
• css.properties.color-scheme
• css.properties.font-synthesis
• html.elements.meta.name.color-scheme

Jan 2022

Browsers released:

• {'browser':'chrome','version':'98'}
• {'browser':'edge','version':'97'}
• {'browser':'firefox','version':'96'}
• {'browser':'safari','version':'15.3'}
• {'browser':'safari_ios','version':'15.3'}

These Features became stable across all major browsers:

• api.HTMLElement.inputMode
• api.Navigator.storage
• api.StorageManager
• api.WorkerNavigator.storage
• api.crossOriginIsolated
• http.headers.Cross-Origin-Embedder-Policy
• http.headers.Cross-Origin-Opener-Policy
• javascript.builtins.Atomics
• javascript.builtins.DataView.DataView.sharedarraybuffer_support
• javascript.builtins.SharedArrayBuffer
• webassembly.api.Memory.Memory.shared
• webassembly.threads-and-atomics

2021

Dec 2021

Browsers released:

• {'browser':'firefox','version':'95'}
• {'browser':'safari','version':'15.2'}
• {'browser':'safari_ios','version':'15.2'}

These Features became stable across all major browsers:

• api.Element.attachShadow.init_delegatesFocus_parameter
• api.HTMLElement.enterKeyHint
• api.ShadowRoot.delegatesFocus
• css.properties.block-size.fit-content
• css.properties.height.fit-content
• css.properties.inline-size.fit-content
• css.properties.max-block-size.fit-content
• css.properties.max-height.fit-content
• css.properties.max-inline-size.fit-content
• css.properties.max-width.fit-content
• css.properties.min-block-size.fit-content
• css.properties.min-height.fit-content
• css.properties.min-inline-size.fit-content
• css.properties.min-width.fit-content
• css.properties.width.fit-content
• html.global_attributes.enterkeyhint
• webassembly.reference-types

Nov 2021

Browsers released:

• {'browser':'chrome','version':'96'}
• {'browser':'edge','version':'96'}
• {'browser':'firefox','version':'94'}

These Features became stable across all major browsers:

• api.PerformanceNavigationTiming
• api.SVGAnimationElement.beginEvent_event
• api.SVGAnimationElement.endEvent_event
• api.SVGAnimationElement.repeatEvent_event
• api.createImageBitmap.options_imageOrientation_parameter
• api.createImageBitmap.options_premultiplyAlpha_parameter
• css.properties.image-rendering.pixelated
• html.elements.input.type_datetime-local

Oct 2021

Browsers released:

• {'browser':'chrome','version':'95'}
• {'browser':'edge','version':'95'}
• {'browser':'firefox','version':'93'}
• {'browser':'safari','version':'15.1'}
• {'browser':'safari_ios','version':'15.1'}

These Features became stable across all major browsers:

• api.AbortSignal.abort_static
• api.CanvasRenderingContext2D.drawImage.ImageBitmap_source_image
• api.Crypto.subtle.secure_context_required
• api.EXT_color_buffer_float
• api.EventTarget.addEventListener.options_parameter.options_signal_parameter
• api.FormDataEvent
• api.HTMLCanvasElement.getContext.webgl2_context
• api.HTMLFormElement.formdata_event
• api.IDBCursor.request
• api.IDBTransaction.commit
• api.ImageBitmap
• api.MediaError.message
• api.MediaSession
• api.Navigator.mediaSession
• api.Navigator.share.data_text_parameter
• api.Performance.timeOrigin
• api.PerformanceObserver.takeRecords
• api.SecurityPolicyViolationEvent.disposition
• api.SecurityPolicyViolationEvent.sample
• api.SubmitEvent
• api.SubtleCrypto.secure_context_required
• api.WEBGL_color_buffer_float
• api.WEBGL_draw_buffers
• api.WebGL2RenderingContext
• api.WebGLQuery
• api.WebGLSampler
• api.WebGLSync
• api.WebGLTransformFeedback
• api.WebGLVertexArrayObject
• api.XMLHttpRequest.send.body_URLSearchParams_type
• api.createImageBitmap
• css.properties.aspect-ratio
• css.properties.border-end-end-radius
• css.properties.border-end-start-radius
• css.properties.border-start-end-radius
• css.properties.border-start-start-radius
• css.properties.break-inside.multicol_context.avoid-column
• css.properties.font-family.system-ui
• css.properties.justify-content.flex_context.left_right
• css.properties.list-style-type.cjk-decimal
• css.properties.list-style-type.disclosure-closed
• css.properties.list-style-type.disclosure-open
• css.properties.list-style-type.ethiopic-numeric
• css.properties.list-style-type.japanese-formal
• css.properties.list-style-type.japanese-informal
• css.properties.list-style-type.korean-hangul-formal
• css.properties.list-style-type.korean-hanja-formal
• css.properties.list-style-type.korean-hanja-informal
• css.properties.list-style-type.simp-chinese-formal
• css.properties.list-style-type.simp-chinese-informal
• css.properties.list-style-type.tamil
• css.properties.list-style-type.trad-chinese-formal
• css.properties.list-style-type.trad-chinese-informal
• css.properties.scroll-margin-block
• css.properties.scroll-margin-block-end
• css.properties.scroll-margin-block-start
• css.properties.scroll-margin-inline
• css.properties.scroll-margin-inline-end
• css.properties.scroll-margin-inline-start
• css.properties.scroll-padding-block
• css.properties.scroll-padding-block-end
• css.properties.scroll-padding-block-start
• css.properties.scroll-padding-inline
• css.properties.scroll-padding-inline-end
• css.properties.scroll-padding-inline-start
• css.selectors.link.not_match_link
• css.selectors.visited.not_match_link
• css.types.image.gradient.linear-gradient.premultiplied_gradients
• css.types.image.gradient.radial-gradient.premultiplied_gradients
• html.elements.img.aspect_ratio_computed_from_attributes
• http.headers.Referrer-Policy.default_strict-origin-when-cross-origin
• javascript.builtins.BigInt64Array
• javascript.builtins.BigUint64Array
• javascript.builtins.DataView.getBigInt64
• javascript.builtins.DataView.getBigUint64
• javascript.builtins.DataView.setBigInt64
• javascript.builtins.DataView.setBigUint64
• javascript.builtins.Error.Error.options_cause_parameter
• javascript.builtins.Error.cause
• javascript.builtins.RegExp.hasIndices
• javascript.classes.private_class_fields_in
• javascript.classes.private_class_methods
• javascript.operators.await.top_level
• webassembly.api.compileStreaming_static
• webassembly.api.instantiateStreaming_static
• webextensions.api.alarms.Alarm
• webextensions.api.alarms.clear
• webextensions.api.alarms.clearAll
• webextensions.api.alarms.create
• webextensions.api.alarms.get
• webextensions.api.alarms.getAll
• webextensions.api.alarms.onAlarm
• webextensions.api.browserAction.ColorArray
• webextensions.api.browserAction.ImageDataType
• webextensions.api.browserAction.disable
• webextensions.api.browserAction.enable
• webextensions.api.browserAction.getBadgeBackgroundColor
• webextensions.api.browserAction.getBadgeText
• webextensions.api.browserAction.getPopup
• webextensions.api.browserAction.getTitle
• webextensions.api.browserAction.onClicked
• webextensions.api.browserAction.setBadgeBackgroundColor
• webextensions.api.browserAction.setBadgeText
• webextensions.api.browserAction.setIcon
• webextensions.api.browserAction.setPopup
• webextensions.api.browserAction.setTitle
• webextensions.api.commands.Command
• webextensions.api.commands.getAll
• webextensions.api.commands.onCommand
• webextensions.api.cookies.Cookie
• webextensions.api.cookies.CookieStore
• webextensions.api.cookies.get
• webextensions.api.cookies.getAll
• webextensions.api.cookies.getAllCookieStores
• webextensions.api.cookies.remove
• webextensions.api.cookies.sameSiteStatus
• webextensions.api.cookies.set
• webextensions.api.events.Event
• webextensions.api.events.UrlFilter
• webextensions.api.extension.ViewType
• webextensions.api.extension.getBackgroundPage
• webextensions.api.extension.getURL
• webextensions.api.extension.getViews
• webextensions.api.extension.inIncognitoContext
• webextensions.api.extension.isAllowedFileSchemeAccess
• webextensions.api.extension.isAllowedIncognitoAccess
• webextensions.api.extensionTypes.ImageDetails
• webextensions.api.extensionTypes.ImageFormat
• webextensions.api.extensionTypes.RunAt
• webextensions.api.i18n.getAcceptLanguages
• webextensions.api.i18n.getMessage
• webextensions.api.i18n.getUILanguage
• webextensions.api.pageAction.ImageDataType
• webextensions.api.pageAction.getPopup
• webextensions.api.pageAction.getTitle
• webextensions.api.pageAction.onClicked
• webextensions.api.pageAction.setIcon
• webextensions.api.pageAction.setPopup
• webextensions.api.pageAction.setTitle
• webextensions.api.permissions.Permissions
• webextensions.api.permissions.contains
• webextensions.api.permissions.getAll
• webextensions.api.permissions.onAdded
• webextensions.api.permissions.onRemoved
• webextensions.api.permissions.remove
• webextensions.api.permissions.request
• webextensions.api.runtime.MessageSender
• webextensions.api.runtime.OnInstalledReason
• webextensions.api.runtime.PlatformArch
• webextensions.api.runtime.PlatformInfo
• webextensions.api.runtime.PlatformOs
• webextensions.api.runtime.Port
• webextensions.api.runtime.connect
• webextensions.api.runtime.connectNative
• webextensions.api.runtime.getBackgroundPage
• webextensions.api.runtime.getManifest
• webextensions.api.runtime.getPlatformInfo
• webextensions.api.runtime.getURL
• webextensions.api.runtime.id
• webextensions.api.runtime.lastError
• webextensions.api.runtime.onConnect
• webextensions.api.runtime.onInstalled
• webextensions.api.runtime.onInstalled.details.previousVersion
• webextensions.api.runtime.onInstalled.details.reason
• webextensions.api.runtime.onMessage
• webextensions.api.runtime.onStartup
• webextensions.api.runtime.openOptionsPage
• webextensions.api.runtime.reload
• webextensions.api.runtime.sendMessage
• webextensions.api.runtime.sendNativeMessage
• webextensions.api.storage.StorageArea
• webextensions.api.storage.StorageChange
• webextensions.api.storage.local
• webextensions.api.storage.onChanged
• webextensions.api.storage.sync
• webextensions.api.tabs.TAB_ID_NONE
• webextensions.api.tabs.Tab.active
• webextensions.api.tabs.Tab.audible
• webextensions.api.tabs.Tab.height
• webextensions.api.tabs.Tab.highlighted
• webextensions.api.tabs.Tab.id
• webextensions.api.tabs.Tab.incognito
• webextensions.api.tabs.Tab.index
• webextensions.api.tabs.Tab.openerTabId
• webextensions.api.tabs.Tab.selected
• webextensions.api.tabs.Tab.status
• webextensions.api.tabs.Tab.title
• webextensions.api.tabs.Tab.url
• webextensions.api.tabs.Tab.width
• webextensions.api.tabs.Tab.windowId
• webextensions.api.tabs.TabStatus
• webextensions.api.tabs.WindowType
• webextensions.api.tabs.captureVisibleTab
• webextensions.api.tabs.connect
• webextensions.api.tabs.connect.connectInfo.frameId
• webextensions.api.tabs.create
• webextensions.api.tabs.detectLanguage
• webextensions.api.tabs.duplicate
• webextensions.api.tabs.executeScript
• webextensions.api.tabs.get
• webextensions.api.tabs.getCurrent
• webextensions.api.tabs.getZoom
• webextensions.api.tabs.goBack
• webextensions.api.tabs.goForward
• webextensions.api.tabs.insertCSS
• webextensions.api.tabs.onActivated
• webextensions.api.tabs.onAttached
• webextensions.api.tabs.onCreated
• webextensions.api.tabs.onDetached
• webextensions.api.tabs.onHighlighted
• webextensions.api.tabs.onMoved
• webextensions.api.tabs.onRemoved
• webextensions.api.tabs.onUpdated
• webextensions.api.tabs.onUpdated.changeInfo.audible
• webextensions.api.tabs.onUpdated.changeInfo.status
• webextensions.api.tabs.onUpdated.changeInfo.title
• webextensions.api.tabs.onUpdated.changeInfo.url
• webextensions.api.tabs.query
• webextensions.api.tabs.query.queryInfo.active
• webextensions.api.tabs.query.queryInfo.audible
• webextensions.api.tabs.query.queryInfo.currentWindow
• webextensions.api.tabs.query.queryInfo.highlighted
• webextensions.api.tabs.query.queryInfo.index
• webextensions.api.tabs.query.queryInfo.lastFocusedWindow
• webextensions.api.tabs.query.queryInfo.openerTabId
• webextensions.api.tabs.query.queryInfo.status
• webextensions.api.tabs.query.queryInfo.title
• webextensions.api.tabs.query.queryInfo.url
• webextensions.api.tabs.query.queryInfo.windowId
• webextensions.api.tabs.query.queryInfo.windowType
• webextensions.api.tabs.reload
• webextensions.api.tabs.remove
• webextensions.api.tabs.removeCSS
• webextensions.api.tabs.sendMessage
• webextensions.api.tabs.setZoom
• webextensions.api.tabs.update
• webextensions.api.webNavigation.getAllFrames
• webextensions.api.webNavigation.getFrame
• webextensions.api.webNavigation.onBeforeNavigate
• webextensions.api.webNavigation.onCommitted
• webextensions.api.webNavigation.onCompleted
• webextensions.api.webNavigation.onDOMContentLoaded
• webextensions.api.webNavigation.onErrorOccurred
• webextensions.api.windows.CreateType
• webextensions.api.windows.WINDOW_ID_CURRENT
• webextensions.api.windows.WINDOW_ID_NONE
• webextensions.api.windows.Window
• webextensions.api.windows.WindowType
• webextensions.api.windows.get
• webextensions.api.windows.getAll
• webextensions.api.windows.getCurrent
• webextensions.api.windows.getLastFocused
• webextensions.api.windows.onCreated
• webextensions.api.windows.onFocusChanged
• webextensions.api.windows.update
• webextensions.manifest.author
• webextensions.manifest.background
• webextensions.manifest.browser_action
• webextensions.manifest.chrome_url_overrides
• webextensions.manifest.commands
• webextensions.manifest.content_scripts
• webextensions.manifest.content_security_policy
• webextensions.manifest.default_locale
• webextensions.manifest.description
• webextensions.manifest.homepage_url
• webextensions.manifest.icons
• webextensions.manifest.manifest_version
• webextensions.manifest.name
• webextensions.manifest.optional_permissions
• webextensions.manifest.options_ui
• webextensions.manifest.page_action
• webextensions.manifest.permissions
• webextensions.manifest.short_name
• webextensions.manifest.version
• webextensions.manifest.web_accessible_resources
• webextensions.match_patterns
• webextensions.match_patterns.scheme.http
• webextensions.match_patterns.scheme.https
• webextensions.match_patterns.scheme.wildcard

Sep 2021

Browsers released:

• {'browser':'chrome','version':'94'}
• {'browser':'edge','version':'94'}
• {'browser':'firefox','version':'92'}
• {'browser':'safari','version':'15'}
• {'browser':'safari_ios','version':'15'}

These Features became stable across all major browsers:

• api.VisualViewport
• api.Window.visualViewport
• css.properties.tab-size
• javascript.builtins.Intl.DateTimeFormat.formatRange
• javascript.builtins.Intl.DateTimeFormat.formatRangeToParts

Aug 2021

Browsers released:

• {'browser':'chrome','version':'93'}
• {'browser':'firefox','version':'91'}

These Features became stable across all major browsers:

• api.WheelEvent.wheelDelta
• api.WheelEvent.wheelDeltaX
• api.WheelEvent.wheelDeltaY
• css.properties.scroll-margin
• javascript.builtins.Intl.DateTimeFormat.DateTimeFormat.options_parameter.options_dayPeriod_parameter
• javascript.classes.private_class_fields

Jul 2021

Browsers released:

• {'browser':'chrome','version':'92'}
• {'browser':'edge','version':'92'}
• {'browser':'firefox','version':'90'}

Jun 2021

These Features became stable across all major browsers:

• api.RTCStatsReport.type_remote-outbound-rtp
• javascript.builtins.Intl.DateTimeFormat.DateTimeFormat.IntlLegacyConstructedSymbol
• javascript.builtins.Intl.NumberFormat.NumberFormat.IntlLegacyConstructedSymbol

May 2021

Browsers released:

• {'browser':'chrome','version':'91'}
• {'browser':'edge','version':'91'}
• {'browser':'firefox','version':'89'}

These Features became stable across all major browsers:

• api.AbstractRange
• api.AnalyserNode.AnalyserNode
• api.AnalyserNode.getFloatTimeDomainData
• api.AudioBuffer.AudioBuffer
• api.AudioBuffer.copyFromChannel
• api.AudioBuffer.copyToChannel
• api.AudioBufferSourceNode.AudioBufferSourceNode
• api.AudioBufferSourceNode.detune
• api.AudioContext
• api.AudioDestinationNode.maxChannelCount
• api.AudioParamMap
• api.AudioWorklet
• api.AudioWorkletGlobalScope
• api.AudioWorkletNode
• api.AudioWorkletProcessor
• api.BaseAudioContext
• api.BaseAudioContext.decodeAudioData.returns_promise
• api.BiquadFilterNode.BiquadFilterNode
• api.Blob.stream
• api.CSSConditionRule
• api.CSSGroupingRule
• api.ChannelMergerNode.ChannelMergerNode
• api.ChannelSplitterNode.ChannelSplitterNode
• api.ConstantSourceNode
• api.ConvolverNode.ConvolverNode
• api.DataTransfer.DataTransfer
• api.DelayNode.DelayNode
• api.Document.visibilitychange_event
• api.DynamicsCompressorNode.DynamicsCompressorNode
• api.GainNode.GainNode
• api.HTMLAreaElement.referrerPolicy
• api.HTMLLinkElement.referrerPolicy
• api.IIRFilterNode
• api.MediaElementAudioSourceNode.MediaElementAudioSourceNode
• api.MediaRecorder
• api.MediaStreamAudioDestinationNode.MediaStreamAudioDestinationNode
• api.MediaStreamAudioSourceNode.MediaStreamAudioSourceNode
• api.OES_fbo_render_mipmap
• api.OfflineAudioContext
• api.OscillatorNode.OscillatorNode
• api.PannerNode.PannerNode
• api.PannerNode.orientationX
• api.PannerNode.orientationY
• api.PannerNode.orientationZ
• api.PannerNode.positionX
• api.PannerNode.positionY
• api.PannerNode.positionZ
• api.Performance.toJSON
• api.PerformanceNavigation.toJSON
• api.PerformancePaintTiming
• api.PeriodicWave.PeriodicWave
• api.RTCIceCandidate.usernameFragment
• api.RTCPeerConnection.restartIce
• api.RTCPeerConnection.setLocalDescription.description_parameter_optional
• api.RTCStatsReport.type_remote-inbound-rtp.id
• api.RTCStatsReport.type_remote-inbound-rtp.localId
• api.RTCStatsReport.type_remote-inbound-rtp.timestamp
• api.RTCStatsReport.type_remote-inbound-rtp.type
• api.Request.formData
• api.Response.formData
• api.StaticRange.StaticRange
• api.StereoPannerNode
• api.TextEncoder.encodeInto
• api.URL.URL
• api.WEBGL_compressed_texture_s3tc_srgb
• api.WaveShaperNode.WaveShaperNode
• api.Worklet
• api.WorkletGlobalScope
• css.at-rules.supports.selector
• css.properties.border-block
• css.properties.border-block-color
• css.properties.border-block-style
• css.properties.border-block-width
• css.properties.border-inline
• css.properties.border-inline-color
• css.properties.border-inline-style
• css.properties.border-inline-width
• css.properties.column-gap.flex_context
• css.properties.gap.flex_context
• css.properties.gap.multicol_context
• css.properties.inset
• css.properties.inset-block
• css.properties.inset-block-end
• css.properties.inset-block-start
• css.properties.inset-inline
• css.properties.inset-inline-end
• css.properties.inset-inline-start
• css.properties.list-style-type.string
• css.properties.margin-block
• css.properties.margin-inline
• css.properties.padding-block
• css.properties.padding-inline
• css.properties.quotes.auto
• css.properties.row-gap.flex_context
• css.properties.scroll-margin-bottom
• css.properties.scroll-margin-left
• css.properties.scroll-margin-right
• css.properties.scroll-margin-top
• css.properties.scroll-padding
• css.properties.scroll-padding-bottom
• css.properties.scroll-padding-left
• css.properties.scroll-padding-right
• css.properties.scroll-padding-top
• css.selectors.file-selector-button
• html.elements.input.type_date
• html.elements.input.type_time
• javascript.builtins.FinalizationRegistry
• javascript.builtins.Intl.Collator.Collator.options_collation_parameter
• javascript.builtins.Intl.DateTimeFormat.DateTimeFormat.options_parameter.options_calendar_parameter
• javascript.builtins.Intl.DateTimeFormat.DateTimeFormat.options_parameter.options_dateStyle_parameter
• javascript.builtins.Intl.DateTimeFormat.DateTimeFormat.options_parameter.options_fractionalSecondDigits_parameter
• javascript.builtins.Intl.DateTimeFormat.DateTimeFormat.options_parameter.options_numberingSystem_parameter
• javascript.builtins.Intl.DateTimeFormat.DateTimeFormat.options_parameter.options_timeStyle_parameter
• javascript.builtins.Intl.DisplayNames
• javascript.builtins.Intl.ListFormat
• javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_compactDisplay_parameter
• javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_currencyDisplay_parameter
• javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_currencySign_parameter
• javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_notation_parameter
• javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_signDisplay_parameter
• javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_unitDisplay_parameter
• javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_unit_parameter
• javascript.builtins.WeakRef
• javascript.classes.public_class_fields
• javascript.classes.static_class_fields
• javascript.statements.export.namespace
• webassembly.BigInt-to-i64-integration

Apr 2021

Browsers released:

• {'browser':'chrome','version':'90'}
• {'browser':'edge','version':'90'}
• {'browser':'firefox','version':'88'}
• {'browser':'safari','version':'14.1'}
• {'browser':'safari_ios','version':'14.5'}

These Features became stable across all major browsers:

• api.Element.beforeinput_event
• api.InputEvent.getTargetRanges
• api.MediaSource.sourceclose_event
• css.properties.text-decoration-thickness

Mar 2021

Browsers released:

• {'browser':'chrome','version':'89'}
• {'browser':'edge','version':'89'}
• {'browser':'firefox','version':'87'}

These Features became stable across all major browsers:

• svg.elements.feComposite.operator.lighter_value

Feb 2021

Browsers released:

• {'browser':'firefox','version':'86'}

These Features became stable across all major browsers:

• api.RTCRtpTransceiver.stop
• css.properties.clip-path.path
• css.properties.hyphens.auto
• css.properties.touch-action.pinch-zoom
• css.selectors.is
• css.selectors.not.selector_list
• css.selectors.where
• css.types.basic-shape.path.clip-path
• html.elements.a.implicit_noopener
• html.elements.area.implicit_noopener
• http.headers.Permissions-Policy

Jan 2021

Browsers released:

• {'browser':'chrome','version':'88'}
• {'browser':'edge','version':'88'}
• {'browser':'firefox','version':'85'}

2020

Dec 2020

Browsers released:

• {'browser':'firefox','version':'84'}

These Features became stable across all major browsers:

• api.Element.transitioncancel_event
• css.properties.hyphens.language_croatian
• css.properties.hyphens.language_danish
• css.properties.hyphens.language_french
• css.properties.hyphens.language_german_reformed_orthography
• css.properties.hyphens.language_hungarian
• css.properties.hyphens.language_norwegian_no
• css.properties.hyphens.language_portuguese
• css.properties.hyphens.language_spanish
• css.properties.text-decoration-thickness.auto
• css.properties.text-decoration-thickness.from-font
• css.properties.text-underline-offset
• css.properties.text-underline-position.from-font
• css.types.image.gradient.conic-gradient
• css.types.image.gradient.repeating-conic-gradient

Nov 2020

Browsers released:

• {'browser':'chrome','version':'87'}
• {'browser':'edge','version':'87'}
• {'browser':'firefox','version':'83'}

These Features became stable across all major browsers:

• api.Document.replaceChildren
• api.DocumentFragment.replaceChildren
• api.Element.replaceChildren
• api.Element.scrollLeft
• api.MediaMetadata
• css.selectors.marker

Oct 2020

Browsers released:

• {'browser':'chrome','version':'86'}
• {'browser':'edge','version':'86'}
• {'browser':'firefox','version':'82'}

These Features became stable across all major browsers:

• api.AudioScheduledSourceNode
• api.Blob.arrayBuffer
• api.Blob.text
• api.BlobEvent
• api.Document.getAnimations
• api.DragEvent
• api.EXT_color_buffer_half_float
• api.Element.animate.options_pseudoElement_parameter
• api.Element.scroll.options_behavior_parameter
• api.Element.scrollBy.options_behavior_parameter
• api.Element.scrollIntoView.options_parameter
• api.Element.scrollTo.options_behavior_parameter
• api.EventTarget.EventTarget
• api.HTMLAnchorElement.referrerPolicy
• api.HTMLIFrameElement.referrerPolicy
• api.HTMLImageElement.referrerPolicy
• api.HTMLScriptElement.referrerPolicy
• api.KeyframeEffect.pseudoElement
• api.MediaQueryList.EventTarget_inheritance
• api.MediaQueryList.change_event
• api.MediaQueryListEvent
• api.OfflineAudioCompletionEvent.OfflineAudioCompletionEvent
• api.RTCStatsReport.type_inbound-rtp.kind
• api.RTCStatsReport.type_outbound-rtp.kind
• api.RTCStatsReport.type_remote-inbound-rtp.kind
• api.ShadowRoot.getAnimations
• api.URLSearchParams.delete
• api.WEBGL_debug_shaders
• api.Window.scroll.options_behavior_parameter
• api.Window.scrollBy.options_behavior_parameter
• api.Window.scrollTo.options_behavior_parameter
• css.properties.animation-timing-function.jump
• css.properties.flex-direction
• css.properties.text-orientation
• css.properties.transition-timing-function.jump
• css.types.easing-function.steps.jump
• html.elements.a.referrerpolicy
• html.elements.area.referrerpolicy
• html.elements.iframe.referrerpolicy
• html.elements.img.referrerpolicy
• html.elements.link.referrerpolicy
• html.elements.video.aspect_ratio_computed_from_attributes
• http.headers.Referer.length_limit_4096B
• javascript.builtins.AggregateError
• javascript.builtins.BigInt
• javascript.builtins.Intl.Locale
• javascript.builtins.Intl.RelativeTimeFormat
• javascript.builtins.Promise.any
• javascript.builtins.Symbol.toStringTag.dom_objects
• javascript.operators.logical_and_assignment
• javascript.operators.logical_or_assignment
• javascript.operators.nullish_coalescing_assignment
• svg.elements.a.referrerpolicy
• svg.elements.stop.stop-opacity

Sep 2020

Browsers released:

• {'browser':'firefox','version':'81'}
• {'browser':'safari','version':'14'}
• {'browser':'safari_ios','version':'14'}

These Features became stable across all major browsers:

• css.properties.appearance.menulist-button
• javascript.builtins.String.replaceAll

Aug 2020

Browsers released:

• {'browser':'chrome','version':'85'}
• {'browser':'edge','version':'85'}
• {'browser':'firefox','version':'80'}

These Features became stable across all major browsers:

• api.Animation.commitStyles
• api.Animation.finished
• api.Animation.persist
• api.Animation.ready
• api.Animation.remove_event
• api.Animation.remove_filling_animation
• api.Animation.replaceState
• api.Animation.timeline
• api.AnimationPlaybackEvent
• api.AnimationTimeline
• api.CSSAnimation
• api.CSSTransition
• api.CanvasPattern.setTransform.dommatrix
• api.Document.timeline
• api.DocumentTimeline
• api.Element.animate.implicit_tofrom
• api.Element.getAnimations
• api.FileReader.loadstart_event
• api.KeyframeEffect.getKeyframes
• api.KeyframeEffect.setKeyframes
• api.RTCStatsReport.type_data-channel
• css.properties.ruby-position
• css.types.global_keywords.revert
• html.elements.iframe.sandbox.allow-top-navigation-by-user-activation

Jul 2020

Browsers released:

• {'browser':'chrome','version':'84'}
• {'browser':'edge','version':'84'}
• {'browser':'firefox','version':'79'}

These Features became stable across all major browsers:

• css.selectors.read-only
• css.selectors.read-write
• javascript.builtins.RegExp.dotAll
• javascript.regular_expressions.named_backreference
• javascript.regular_expressions.named_capturing_group
• javascript.regular_expressions.unicode_character_class_escape
• svg.global_attributes.transform-origin

Jun 2020

Browsers released:

• {'browser':'firefox','version':'78'}

These Features became stable across all major browsers:

• api.Element.animationcancel_event
• css.properties.grid-template-columns.repeat
• css.properties.grid-template-rows.repeat

May 2020

Browsers released:

• {'browser':'chrome','version':'83'}
• {'browser':'edge','version':'83'}
• {'browser':'firefox','version':'76'}

These Features became stable across all major browsers:

• api.ServiceWorkerGlobalScope.messageerror_event
• css.properties.image-orientation
• css.types.clamp
• css.types.max
• css.types.min
• svg.global_attributes.requiredExtensions

Apr 2020

Browsers released:

• {'browser':'chrome','version':'81'}
• {'browser':'edge','version':'81'}
• {'browser':'firefox','version':'75'}

These Features became stable across all major browsers:

• api.Animation
• api.AnimationEffect
• api.AnimationEvent.pseudoElement
• api.Clipboard
• api.Element.animate
• api.Element.part
• api.Element.transitionrun_event
• api.Element.transitionstart_event
• api.FormData.worker_support
• api.GeolocationCoordinates
• api.GeolocationPosition
• api.GeolocationPositionError
• api.HTMLIFrameElement.allow
• api.KeyframeEffect
• api.Navigator.clipboard
• api.RTCDTMFSender
• api.RTCDTMFToneChangeEvent
• api.RTCRtpSender.dtmf
• api.RTCStatsReport.type_candidate-pair.id
• api.RTCStatsReport.type_candidate-pair.timestamp
• api.RTCStatsReport.type_candidate-pair.type
• api.RTCStatsReport.type_inbound-rtp.bytesReceived
• api.RTCStatsReport.type_inbound-rtp.id
• api.RTCStatsReport.type_inbound-rtp.jitter
• api.RTCStatsReport.type_inbound-rtp.packetsLost
• api.RTCStatsReport.type_inbound-rtp.packetsReceived
• api.RTCStatsReport.type_inbound-rtp.timestamp
• api.RTCStatsReport.type_inbound-rtp.type
• api.RTCStatsReport.type_local-candidate.id
• api.RTCStatsReport.type_local-candidate.timestamp
• api.RTCStatsReport.type_local-candidate.type
• api.RTCStatsReport.type_outbound-rtp.bytesSent
• api.RTCStatsReport.type_outbound-rtp.id
• api.RTCStatsReport.type_outbound-rtp.packetsSent
• api.RTCStatsReport.type_outbound-rtp.timestamp
• api.RTCStatsReport.type_outbound-rtp.type
• api.RTCStatsReport.type_remote-candidate.id
• api.RTCStatsReport.type_remote-candidate.timestamp
• api.RTCStatsReport.type_remote-candidate.type
• api.ResizeObserver
• api.ResizeObserverEntry
• api.SVGLengthList.length
• api.SVGNumberList.length
• api.SVGPointList.length
• api.SVGStringList.length
• api.SVGTransformList.length
• api.TextMetrics.actualBoundingBoxAscent
• api.TextMetrics.actualBoundingBoxDescent
• api.TextMetrics.actualBoundingBoxLeft
• api.TextMetrics.actualBoundingBoxRight
• css.properties.opacity.percentages
• css.properties.overflow.multiple_keywords
• css.properties.tab-size.length
• css.properties.text-underline-position
• css.properties.white-space.break-spaces
• css.selectors.part
• css.types.length.Q
• html.elements.iframe.allow
• html.global_attributes.exportparts
• html.global_attributes.part
• http.headers.Cross-Origin-Resource-Policy
• javascript.grammar.hashbang_comments
• javascript.operators.nullish_coalescing
• javascript.operators.optional_chaining
• webassembly.api.Global

Mar 2020

Browsers released:

• {'browser':'firefox','version':'74'}
• {'browser':'safari','version':'13.1'}
• {'browser':'safari_ios','version':'13.4'}

These Features became stable across all major browsers:

• api.EXT_sRGB
• api.HTMLVideoElement.getVideoPlaybackQuality
• api.RTCStatsReport.type_inbound-rtp.ssrc
• api.RTCStatsReport.type_local-candidate
• api.RTCStatsReport.type_outbound-rtp
• api.RTCStatsReport.type_remote-candidate
• api.RTCStatsReport.type_remote-inbound-rtp
• svg.global_attributes.letter-spacing
• svg.global_attributes.word-spacing

Feb 2020

Browsers released:

• {'browser':'chrome','version':'80'}
• {'browser':'edge','version':'80'}
• {'browser':'firefox','version':'73'}

These Features became stable across all major browsers:

• api.AudioContext.createMediaStreamDestination
• api.AudioParam.maxValue
• api.AudioParam.minValue
• api.BeforeUnloadEvent
• api.CSS.escape_static
• api.CSS.supports_static
• api.CacheStorage.secure_context_required
• api.CanvasPattern.setTransform
• api.CanvasRenderingContext2D.getTransform
• api.CanvasRenderingContext2D.isPointInStroke
• api.CanvasRenderingContext2D.resetTransform
• api.CanvasRenderingContext2D.setTransform.matrix_parameter
• api.CredentialsContainer.store
• api.CustomElementRegistry
• api.DOMException.DOMException
• api.DOMMatrix
• api.DOMMatrixReadOnly
• api.DOMPoint
• api.DOMPointReadOnly
• api.DOMQuad
• api.DOMRect
• api.DOMRectList
• api.DOMRectReadOnly
• api.Document.elementsFromPoint
• api.Document.fonts
• api.Element.DOMActivate_event
• api.Element.assignedSlot
• api.Element.attachShadow
• api.Element.hasPointerCapture
• api.Element.input_event
• api.Element.scroll
• api.Element.scrollBy
• api.Element.scrollIntoView
• api.Element.scrollTo
• api.Element.shadowRoot
• api.Element.slot
• api.Event.composed
• api.Event.composedPath
• api.EventSource
• api.EventTarget.addEventListener.options_parameter.options_passive_parameter_default_true_touch
• api.File.File
• api.FileSystemDirectoryEntry
• api.FileSystemDirectoryReader.readEntries
• api.FileSystemEntry
• api.FileSystemFileEntry
• api.FontFace
• api.FontFaceSet
• api.Geolocation.secure_context_required
• api.GeolocationCoordinates.secure_context_required
• api.HTMLAnchorElement.password
• api.HTMLAnchorElement.username
• api.HTMLAreaElement.password
• api.HTMLAreaElement.username
• api.HTMLCanvasElement.captureStream
• api.HTMLCanvasElement.getContext.bitmaprenderer_context
• api.HTMLCanvasElement.getContext.webgl_context
• api.HTMLCanvasElement.toBlob
• api.HTMLDetailsElement
• api.HTMLEmbedElement.align
• api.HTMLEmbedElement.type
• api.HTMLIFrameElement.srcdoc
• api.HTMLImageElement.decode
• api.HTMLImageElement.decoding
• api.HTMLInputElement.setRangeText
• api.HTMLInputElement.webkitEntries
• api.HTMLLinkElement.sizes
• api.HTMLMediaElement.waitingforkey_event
• api.HTMLOListElement.reversed
• api.HTMLSelectElement.autocomplete
• api.HTMLSlotElement
• api.HTMLTextAreaElement.autocomplete
• api.HTMLTextAreaElement.selectionDirection
• api.HTMLTextAreaElement.setRangeText
• api.HTMLVideoElement.resize_event
• api.History.scrollRestoration
• api.IDBCursor.continuePrimaryKey
• api.IDBDatabase.close_event
• api.IDBIndex.getAll
• api.IDBIndex.getAllKeys
• api.IDBKeyRange.includes
• api.IDBObjectStore.autoIncrement
• api.IDBObjectStore.getAll
• api.IDBObjectStore.getAllKeys
• api.IDBObjectStore.getKey
• api.IDBObjectStore.openKeyCursor
• api.IDBTransaction.objectStoreNames
• api.IDBVersionChangeEvent.IDBVersionChangeEvent
• api.ImageBitmapRenderingContext
• api.InputDeviceInfo
• api.InputEvent
• api.KeyboardEvent.code
• api.KeyboardEvent.getModifierState.key_parameter_altgraph
• api.KeyboardEvent.getModifierState.key_parameter_meta
• api.KeyboardEvent.isComposing
• api.MediaCapabilities
• api.MediaDevices.getUserMedia.secure_context_required
• api.MediaElementAudioSourceNode.mediaElement
• api.MediaKeySession.keystatuseschange_event
• api.MediaKeySession.message_event
• api.MediaStream.removetrack_event
• api.MediaStreamAudioSourceNode.mediaStream
• api.Navigator.geolocation.secure_context_required
• api.Navigator.mediaCapabilities
• api.Navigator.mediaDevices.secure_context_required
• api.Node.getRootNode
• api.Node.isConnected
• api.NodeList.@@iterator
• api.PageTransitionEvent.PageTransitionEvent
• api.Path2D.addPath
• api.Performance.resourcetimingbufferfull_event
• api.PerformanceObserver
• api.PerformanceObserverEntryList
• api.PointerEvent.tangentialPressure
• api.ProcessingInstruction.sheet
• api.PromiseRejectionEvent
• api.RTCCertificate
• api.RTCDataChannel
• api.RTCDataChannelEvent
• api.RTCPeerConnection.addIceCandidate.returns_promise
• api.RTCPeerConnection.addTrack
• api.RTCPeerConnection.addTransceiver
• api.RTCPeerConnection.createAnswer.returns_promise
• api.RTCPeerConnection.createDataChannel
• api.RTCPeerConnection.createOffer.returns_promise
• api.RTCPeerConnection.currentLocalDescription
• api.RTCPeerConnection.currentRemoteDescription
• api.RTCPeerConnection.datachannel_event
• api.RTCPeerConnection.generateCertificate_static
• api.RTCPeerConnection.getReceivers
• api.RTCPeerConnection.getSenders
• api.RTCPeerConnection.getStats.returns_promise
• api.RTCPeerConnection.getTransceivers
• api.RTCPeerConnection.pendingLocalDescription
• api.RTCPeerConnection.pendingRemoteDescription
• api.RTCPeerConnection.removeTrack
• api.RTCPeerConnection.setLocalDescription.returns_promise
• api.RTCPeerConnection.setRemoteDescription.returns_promise
• api.RTCPeerConnection.track_event
• api.RTCRtpReceiver.getSynchronizationSources
• api.RTCRtpSender.replaceTrack
• api.RTCRtpTransceiver.currentDirection
• api.RTCRtpTransceiver.direction
• api.RTCRtpTransceiver.mid
• api.RTCRtpTransceiver.receiver
• api.RTCRtpTransceiver.sender
• api.RTCRtpTransceiver.stopped
• api.RTCStatsReport
• api.RTCTrackEvent
• api.ReadableStream.ReadableStream
• api.ReadableStream.tee
• api.SVGAnimateElement
• api.SVGAnimateMotionElement
• api.SVGAnimateTransformElement
• api.SVGAnimationElement
• api.SVGFEDropShadowElement
• api.SVGGeometryElement
• api.SVGMPathElement
• api.SVGRadialGradientElement.fr
• api.SVGSVGElement.animationsPaused
• api.SVGSetElement
• api.Screen.availLeft
• api.Screen.availTop
• api.Selection.modify
• api.ServiceWorkerContainer.startMessages
• api.ShadowRoot
• api.SourceBuffer.changeType
• api.SubtleCrypto.decrypt
• api.SubtleCrypto.deriveBits
• api.SubtleCrypto.deriveKey
• api.SubtleCrypto.digest
• api.SubtleCrypto.encrypt
• api.SubtleCrypto.exportKey
• api.SubtleCrypto.generateKey
• api.SubtleCrypto.importKey
• api.SubtleCrypto.sign
• api.SubtleCrypto.unwrapKey
• api.SubtleCrypto.verify
• api.SubtleCrypto.worker_support
• api.SubtleCrypto.wrapKey
• api.Text.assignedSlot
• api.TextDecoder
• api.TextEncoder
• api.TransitionEvent.pseudoElement
• api.UIEvent.which
• api.VTTCue.VTTCue
• api.VTTCue.align
• api.VTTCue.line
• api.VTTCue.position
• api.VTTCue.size
• api.VTTCue.snapToLines
• api.VTTCue.vertical
• api.WEBGL_compressed_texture_astc
• api.Window.customElements
• api.Window.find
• api.Window.languagechange_event
• api.Window.rejectionhandled_event
• api.Window.scroll.options_left_parameter
• api.Window.scroll.options_top_parameter
• api.Window.scrollBy.options_left_parameter
• api.Window.scrollBy.options_top_parameter
• api.Window.scrollTo.options_left_parameter
• api.Window.scrollTo.options_top_parameter
• api.Window.unhandledrejection_event
• api.XMLHttpRequest.getAllResponseHeaders.header_names_lowercase
• api.XMLHttpRequest.responseType.json_value
• api.console.countReset_static
• api.console.timeLog_static
• api.crypto.worker_support
• api.fetch.blob_data_support
• api.queueMicrotask
• css.at-rules.font-face.OpenType_COLRv0
• css.at-rules.font-face.font-display
• css.at-rules.keyframes.ignore_important_declarations
• css.at-rules.media.calc
• css.at-rules.media.display-mode
• css.at-rules.media.monochrome
• css.at-rules.media.prefers-color-scheme
• css.at-rules.media.prefers-reduced-motion
• css.properties.align-content.flex_context.space-evenly
• css.properties.align-content.flex_context.stretch
• css.properties.align-items.grid_context.start_end
• css.properties.align-self.flex_context.stretch
• css.properties.all
• css.properties.background-blend-mode
• css.properties.block-size
• css.properties.border-block-end
• css.properties.border-block-end-color
• css.properties.border-block-end-style
• css.properties.border-block-end-width
• css.properties.border-block-start
• css.properties.border-block-start-color
• css.properties.border-block-start-style
• css.properties.border-block-start-width
• css.properties.border-inline-end
• css.properties.border-inline-end-color
• css.properties.border-inline-end-style
• css.properties.border-inline-end-width
• css.properties.border-inline-start
• css.properties.border-inline-start-color
• css.properties.border-inline-start-style
• css.properties.border-inline-start-width
• css.properties.box-decoration-break
• css.properties.caret-color
• css.properties.clip-path
• css.properties.column-count.auto
• css.properties.column-span.all
• css.properties.column-span.none
• css.properties.content.element_replacement
• css.properties.cursor.url_positioning_syntax
• css.properties.custom-property.env
• css.properties.display.contents
• css.properties.display.flow-root
• css.properties.font.font_stretch_support
• css.properties.font-kerning
• css.properties.font-smooth
• css.properties.font-style.oblique-angle
• css.properties.font-variant.css_fonts_shorthand
• css.properties.font-variant-caps
• css.properties.font-variant-east-asian
• css.properties.font-variant-ligatures
• css.properties.font-variant-numeric
• css.properties.grid-template.none
• css.properties.grid-template-areas.none
• css.properties.grid-template-columns.auto
• css.properties.grid-template-columns.max-content
• css.properties.grid-template-columns.min-content
• css.properties.grid-template-columns.none
• css.properties.grid-template-rows.auto
• css.properties.grid-template-rows.max-content
• css.properties.grid-template-rows.min-content
• css.properties.grid-template-rows.none
• css.properties.height.max-content
• css.properties.height.min-content
• css.properties.image-rendering
• css.properties.inline-size
• css.properties.isolation
• css.properties.justify-content.flex_context.space-evenly
• css.properties.justify-content.flex_context.stretch
• css.properties.letter-spacing.svg_elements
• css.properties.list-style-type.arabic-indic
• css.properties.list-style-type.bengali
• css.properties.list-style-type.cambodian
• css.properties.list-style-type.cjk-earthly-branch
• css.properties.list-style-type.cjk-heavenly-stem
• css.properties.list-style-type.cjk-ideographic
• css.properties.list-style-type.devanagari
• css.properties.list-style-type.ethiopic-halehame-ti-er
• css.properties.list-style-type.ethiopic-halehame-ti-et
• css.properties.list-style-type.gujarati
• css.properties.list-style-type.gurmukhi
• css.properties.list-style-type.hangul
• css.properties.list-style-type.hangul-consonant
• css.properties.list-style-type.kannada
• css.properties.list-style-type.khmer
• css.properties.list-style-type.lao
• css.properties.list-style-type.lower-armenian
• css.properties.list-style-type.malayalam
• css.properties.list-style-type.mongolian
• css.properties.list-style-type.myanmar
• css.properties.list-style-type.oriya
• css.properties.list-style-type.persian
• css.properties.list-style-type.telugu
• css.properties.list-style-type.thai
• css.properties.list-style-type.tibetan
• css.properties.list-style-type.upper-armenian
• css.properties.list-style-type.urdu
• css.properties.margin-block-end
• css.properties.margin-block-start
• css.properties.margin-inline-end
• css.properties.margin-inline-start
• css.properties.mask-type
• css.properties.max-block-size
• css.properties.max-height.max-content
• css.properties.max-height.min-content
• css.properties.max-height.none
• css.properties.max-inline-size
• css.properties.max-width.max-content
• css.properties.max-width.min-content
• css.properties.min-block-size
• css.properties.min-height.max-content
• css.properties.min-height.min-content
• css.properties.min-inline-size
• css.properties.min-width.max-content
• css.properties.min-width.min-content
• css.properties.mix-blend-mode
• css.properties.object-fit
• css.properties.object-position
• css.properties.overflow.auto
• css.properties.overflow-x.auto
• css.properties.overflow-y.auto
• css.properties.padding-block-end
• css.properties.padding-block-start
• css.properties.padding-inline-end
• css.properties.padding-inline-start
• css.properties.place-content
• css.properties.place-items
• css.properties.place-self
• css.properties.resize
• css.properties.scroll-padding.auto
• css.properties.scroll-snap-align
• css.properties.shape-image-threshold
• css.properties.shape-margin
• css.properties.shape-outside
• css.properties.text-align.end
• css.properties.text-align.start
• css.properties.text-decoration.includes_color-and-style
• css.properties.text-decoration-color
• css.properties.text-decoration-line
• css.properties.text-decoration-style
• css.properties.text-emphasis-position.left
• css.properties.text-emphasis-position.right
• css.properties.text-orientation.sideways
• css.properties.text-rendering
• css.properties.transform-box
• css.properties.unicode-bidi.isolate
• css.properties.unicode-bidi.isolate-override
• css.properties.unicode-bidi.plaintext
• css.properties.user-select
• css.properties.width.max-content
• css.properties.width.min-content
• css.properties.width.stretch
• css.properties.will-change
• css.properties.word-spacing.svg_elements
• css.properties.writing-mode.horizontal-tb
• css.properties.writing-mode.vertical-lr
• css.properties.writing-mode.vertical-rl
• css.selectors.any-link
• css.selectors.attribute.case_insensitive_modifier
• css.selectors.cue
• css.selectors.default
• css.selectors.defined
• css.selectors.focus-within
• css.selectors.host
• css.selectors.hostfunction
• css.selectors.indeterminate.radio
• css.selectors.invalid.form
• css.selectors.placeholder
• css.selectors.placeholder-shown
• css.selectors.scope
• css.selectors.slotted
• css.selectors.valid.form
• css.types.basic-shape
• css.types.blend-mode
• css.types.color.hsl.alpha_parameter
• css.types.color.hsl.space_separated_parameters
• css.types.color.rgb.alpha_parameter
• css.types.color.rgb.float_values
• css.types.color.rgb.space_separated_parameters
• css.types.color.rgb_hexadecimal_notation.alpha_hexadecimal_notation
• css.types.image.gradient.linear-gradient.doubleposition
• css.types.image.gradient.linear-gradient.interpolation_hints
• css.types.image.gradient.radial-gradient.doubleposition
• css.types.image.gradient.radial-gradient.interpolation_hints
• css.types.image.gradient.repeating-linear-gradient.doubleposition
• css.types.image.gradient.repeating-linear-gradient.interpolation_hints
• css.types.image.gradient.repeating-radial-gradient.doubleposition
• css.types.image.gradient.repeating-radial-gradient.interpolation_hints
• html.elements.a.rel.noopener
• html.elements.area.rel.noopener
• html.elements.bdi
• html.elements.details
• html.elements.iframe.sandbox.allow-modals
• html.elements.iframe.sandbox.allow-popups-to-escape-sandbox
• html.elements.img.usemap.caseless_usemap
• html.elements.link.rel.preconnect
• html.elements.meta.name.referrer
• html.elements.rb
• html.elements.rp
• html.elements.rt
• html.elements.script.type.module
• html.elements.slot
• html.elements.summary
• html.elements.textarea.autocomplete
• html.elements.wbr
• http.data-url.html_files
• http.headers.Access-Control-Expose-Headers.wildcard
• http.headers.Content-Security-Policy.base-uri
• http.headers.Referrer-Policy
• http.headers.Set-Cookie.cookie_prefixes
• javascript.builtins.Array.@@species
• javascript.builtins.Array.flat
• javascript.builtins.Array.flatMap
• javascript.builtins.Array.sort.stable_sorting
• javascript.builtins.Array.toLocaleString.locales_parameter
• javascript.builtins.Array.toLocaleString.options_parameter
• javascript.builtins.AsyncGenerator
• javascript.builtins.AsyncGeneratorFunction
• javascript.builtins.AsyncIterator
• javascript.builtins.Date.UTC.optional_monthIndex
• javascript.builtins.Function.name.inferred_names
• javascript.builtins.JSON.json_superset
• javascript.builtins.JSON.stringify.well_formed_stringify
• javascript.builtins.Object.fromEntries
• javascript.builtins.Promise.@@species
• javascript.builtins.Promise.allSettled
• javascript.builtins.Proxy.handler.getPrototypeOf
• javascript.builtins.RegExp.@@matchAll
• javascript.builtins.RegExp.@@replace
• javascript.builtins.RegExp.@@split
• javascript.builtins.RegExp.flags
• javascript.builtins.String.matchAll
• javascript.builtins.String.trimEnd
• javascript.builtins.String.trimStart
• javascript.builtins.Symbol.asyncIterator
• javascript.builtins.Symbol.description
• javascript.builtins.Symbol.match
• javascript.builtins.Symbol.matchAll
• javascript.builtins.Symbol.replace
• javascript.builtins.Symbol.search
• javascript.builtins.Symbol.split
• javascript.builtins.globalThis
• javascript.functions.method_definitions.async_generator_methods
• javascript.functions.rest_parameters.destructuring
• javascript.grammar.numeric_separators
• javascript.grammar.template_literals.template_literal_revision
• javascript.operators.async_generator_function
• javascript.operators.destructuring.rest_in_objects
• javascript.operators.generator_function.trailing_comma
• javascript.operators.import
• javascript.operators.import_meta
• javascript.operators.object_initializer.spread_properties
• javascript.operators.spread.spread_in_object_literals
• javascript.statements.async_generator_function
• javascript.statements.for_await_of
• javascript.statements.try_catch.optional_catch_binding
• svg.elements.a.xlink_actuate
• svg.elements.a.xlink_show
• svg.elements.a.xlink_title
• svg.elements.animate.attributeName
• svg.elements.animate.attributeType
• svg.elements.animate.dur
• svg.elements.animate.from
• svg.elements.animate.repeatCount
• svg.elements.animate.to
• svg.elements.animateMotion.calcMode
• svg.elements.animateMotion.keyPoints
• svg.elements.animateMotion.origin
• svg.elements.animateMotion.path
• svg.elements.animateMotion.rotate
• svg.elements.animateTransform.by
• svg.elements.animateTransform.from
• svg.elements.animateTransform.to
• svg.elements.animateTransform.type
• svg.elements.feConvolveMatrix.bias
• svg.elements.feConvolveMatrix.divisor
• svg.elements.feConvolveMatrix.edgeMode
• svg.elements.feConvolveMatrix.kernelUnitLength
• svg.elements.feConvolveMatrix.order
• svg.elements.feConvolveMatrix.preserveAlpha
• svg.elements.feConvolveMatrix.targetX
• svg.elements.feConvolveMatrix.targetY
• svg.elements.feDiffuseLighting.diffuseConstant
• svg.elements.feDiffuseLighting.kernelUnitLength
• svg.elements.feDiffuseLighting.surfaceScale
• svg.elements.feDisplacementMap.xChannelSelector
• svg.elements.feDisplacementMap.yChannelSelector
• svg.elements.feDistantLight.azimuth
• svg.elements.feDistantLight.elevation
• svg.elements.feDropShadow
• svg.elements.feFlood.flood-opacity
• svg.elements.feImage.preserveAspectRatio
• svg.elements.feSpecularLighting.surfaceScale
• svg.elements.feTurbulence.numOctaves
• svg.elements.feTurbulence.stitchTiles
• svg.elements.feTurbulence.type
• svg.elements.filter.filterUnits
• svg.elements.filter.height
• svg.elements.filter.primitiveUnits
• svg.elements.filter.width
• svg.elements.filter.x
• svg.elements.filter.xlink_href
• svg.elements.filter.y
• svg.elements.image.height
• svg.elements.image.preserveAspectRatio
• svg.elements.image.width
• svg.elements.image.x
• svg.elements.image.xlink_href
• svg.elements.image.y
• svg.elements.linearGradient.gradientTransform
• svg.elements.linearGradient.gradientUnits
• svg.elements.linearGradient.spreadMethod
• svg.elements.linearGradient.x1
• svg.elements.linearGradient.x2
• svg.elements.linearGradient.xlink_href
• svg.elements.linearGradient.y1
• svg.elements.linearGradient.y2
• svg.elements.mask.maskContentUnits
• svg.elements.mask.maskUnits
• svg.elements.mpath.xlink_href
• svg.elements.pattern.href
• svg.elements.pattern.patternContentUnits
• svg.elements.pattern.patternTransform
• svg.elements.pattern.patternUnits
• svg.elements.radialGradient.cx
• svg.elements.radialGradient.cy
• svg.elements.radialGradient.fr
• svg.elements.radialGradient.fx
• svg.elements.radialGradient.fy
• svg.elements.radialGradient.gradientTransform
• svg.elements.radialGradient.gradientUnits
• svg.elements.radialGradient.href
• svg.elements.radialGradient.r
• svg.elements.radialGradient.spreadMethod
• svg.elements.radialGradient.xlink_href
• svg.elements.script.type
• svg.elements.script.xlink_href
• svg.elements.style.media
• svg.elements.style.title
• svg.elements.style.type
• svg.elements.symbol.preserveAspectRatio
• svg.elements.symbol.viewBox
• svg.elements.textPath.spacing
• svg.elements.title.tooltip_display
• svg.elements.tspan.lengthAdjust
• svg.elements.view.preserveAspectRatio
• svg.elements.view.viewBox
• svg.elements.view.zoomAndPan
• svg.global_attributes.vector-effect

Jan 2020

Browsers released:

• {'browser':'edge','version':'79'}
• {'browser':'firefox','version':'72'}

These Features became stable across all major browsers:

• api.Element.animationend_event
• api.Element.animationiteration_event
• api.Element.animationstart_event
• css.properties.column-span
• css.properties.font-optical-sizing

2019

Dec 2019

Browsers released:

• {'browser':'chrome','version':'79'}
• {'browser':'firefox','version':'71'}

Nov 2019

These Features became stable across all major browsers:

• css.properties.grid-auto-columns
• css.properties.grid-auto-rows
• http.headers.Origin

Oct 2019

Browsers released:

• {'browser':'chrome','version':'78'}
• {'browser':'firefox','version':'70'}

These Features became stable across all major browsers:

• api.AuthenticatorAssertionResponse
• api.AuthenticatorAttestationResponse
• api.AuthenticatorResponse
• api.Credential
• api.CredentialsContainer
• api.Element.gotpointercapture_event
• api.Element.lostpointercapture_event
• api.Element.pointercancel_event
• api.Element.pointerdown_event
• api.Element.pointerenter_event
• api.Element.pointerleave_event
• api.Element.pointermove_event
• api.Element.pointerout_event
• api.Element.pointerover_event
• api.Element.pointerup_event
• api.Element.releasePointerCapture
• api.Element.setPointerCapture
• api.HTMLObjectElement.contentWindow
• api.MediaSource
• api.Navigator.credentials
• api.Navigator.maxTouchPoints
• api.PointerEvent
• api.PublicKeyCredential
• api.SourceBuffer
• api.SourceBufferList
• api.StaticRange
• api.Window.afterprint_event
• api.Window.beforeprint_event
• css.properties.line-break
• css.properties.position.sticky
• css.properties.touch-action
• html.elements.a.download
• http.headers.Set-Cookie.SameSite
• javascript.builtins.Intl.DateTimeFormat.DateTimeFormat.options_parameter.options_hourCycle_parameter
• javascript.builtins.Intl.NumberFormat.formatToParts
• javascript.builtins.Intl.PluralRules

Sep 2019

Browsers released:

• {'browser':'chrome','version':'77'}
• {'browser':'firefox','version':'69'}
• {'browser':'safari','version':'13'}
• {'browser':'safari_ios','version':'13'}

Aug 2019

These Features became stable across all major browsers:

• api.CSSStyleSheet.addRule
• api.CSSStyleSheet.removeRule
• api.CSSStyleSheet.rules
• api.HTMLTrackElement.cuechange_event
• css.properties.-webkit-line-clamp

Jul 2019

Browsers released:

• {'browser':'chrome','version':'76'}
• {'browser':'firefox','version':'68'}

Jun 2019

Browsers released:

• {'browser':'chrome','version':'75'}

These Features became stable across all major browsers:

• css.properties.word-break.break-word

May 2019

Browsers released:

• {'browser':'firefox','version':'67'}

Apr 2019

Browsers released:

• {'browser':'chrome','version':'74'}

These Features became stable across all major browsers:

• api.AbortController
• api.DedicatedWorkerGlobalScope.name
• api.Event.returnValue
• api.HTMLDataListElement
• api.HTMLInputElement.list
• api.HTMLMediaElement.encrypted_event
• api.HTMLMediaElement.mediaKeys
• api.HTMLMediaElement.setMediaKeys
• api.IntersectionObserver
• api.IntersectionObserverEntry
• api.MediaEncryptedEvent
• api.MediaKeyMessageEvent
• api.MediaKeySession
• api.MediaKeyStatusMap
• api.MediaKeySystemAccess
• api.MediaKeys
• api.MouseEvent.getModifierState
• api.Navigator.requestMediaKeySystemAccess
• api.RTCRtpReceiver.getContributingSources
• api.RTCRtpReceiver.getStats
• api.RTCRtpSender.getStats
• api.Request.credentials.default_same-origin
• api.Request.signal
• api.VideoPlaybackQuality
• api.Window.event
• api.Worker.Worker.options_name_parameter
• css.properties.gap.grid_context.calc_values
• html.elements.datalist
• html.elements.input.list
• html.elements.input.type_color
• http.headers.Set-Cookie.SameSite.Lax
• http.headers.Set-Cookie.SameSite.Strict
• javascript.builtins.RegExp.source.escaping
• javascript.builtins.RegExp.toString.escaping
• svg.elements.a.href
• svg.elements.textPath.href
• svg.elements.use.href
• svg.global_attributes.href

Mar 2019

Browsers released:

• {'browser':'chrome','version':'73'}
• {'browser':'firefox','version':'66'}
• {'browser':'safari','version':'12.1'}
• {'browser':'safari_ios','version':'12.2'}

Feb 2019

These Features became stable across all major browsers:

• api.ByteLengthQueuingStrategy
• api.CountQueuingStrategy
• api.HTMLMarqueeElement
• api.ReadableStream
• api.Response.body
• api.Window.open.once_per_event
• css.properties.break-after
• css.properties.break-before
• css.properties.break-inside
• html.elements.marquee

Jan 2019

Browsers released:

• {'browser':'chrome','version':'72'}
• {'browser':'firefox','version':'65'}

These Features became stable across all major browsers:

• api.URL.toJSON
• api.Window.screenLeft
• api.Window.screenTop
• css.at-rules.media.any-hover
• css.at-rules.media.any-pointer
• css.at-rules.media.hover
• css.at-rules.media.pointer

2018

Dec 2018

Browsers released:

• {'browser':'chrome','version':'71'}
• {'browser':'firefox','version':'64'}

Nov 2018

These Features became stable across all major browsers:

• api.CSSStyleDeclaration.@@iterator
• api.DOMTokenList.replace.boolean_value
• api.DataTransfer.setDragImage
• api.Element.getAttributeNames
• api.Element.securitypolicyviolation_event
• api.Element.toggleAttribute
• api.Element.transitionend_event
• api.File.lastModified
• api.FormData.@@iterator
• api.FormData.delete
• api.FormData.entries
• api.FormData.forEach
• api.FormData.get
• api.FormData.getAll
• api.FormData.has
• api.FormData.keys
• api.FormData.set
• api.FormData.values
• api.HTMLAnchorElement.relList
• api.HTMLAreaElement.relList
• api.HTMLButtonElement.labels
• api.HTMLElement.tabIndex
• api.HTMLInputElement.labels
• api.HTMLLabelElement.control
• api.HTMLMeterElement.labels
• api.HTMLObjectElement.reportValidity
• api.HTMLOutputElement.labels
• api.HTMLProgressElement.labels
• api.HTMLSelectElement.labels
• api.HTMLTextAreaElement.labels
• api.MediaDeviceInfo.toJSON
• api.MediaStreamAudioDestinationNode
• api.PerformanceResourceTiming.secureConnectionStart
• api.PerformanceTiming.secureConnectionStart
• api.RTCPeerConnection.getConfiguration
• api.SecurityPolicyViolationEvent
• api.ServiceWorkerRegistration.updateViaCache
• api.TextTrack.id
• api.TextTrackList.change_event
• api.TextTrackList.getTrackById
• api.TextTrackList.removetrack_event
• api.WorkerGlobalScope.securitypolicyviolation_event
• api.origin
• css.at-rules.media.-webkit-device-pixel-ratio
• css.at-rules.media.-webkit-max-device-pixel-ratio
• css.at-rules.media.-webkit-min-device-pixel-ratio
• css.properties.-webkit-mask-position-x
• css.properties.-webkit-mask-position-y
• css.properties.font-stretch.percentage
• css.properties.mask-image.multiple_mask_images
• css.properties.mask-image.svg_masks
• css.properties.overflow-wrap
• css.properties.text-transform.uppercase_eszett
• javascript.builtins.Intl.Collator.Collator.options_caseFirst_parameter
• javascript.builtins.Intl.DateTimeFormat.formatToParts
• javascript.builtins.Promise.finally

Oct 2018

Browsers released:

• {'browser':'chrome','version':'70'}
• {'browser':'edge','version':'18'}
• {'browser':'firefox','version':'63'}

These Features became stable across all major browsers:

• api.CustomEvent.worker_support
• api.Event.srcElement
• api.HTMLIFrameElement.allowFullscreen
• api.RTCPeerConnectionIceEvent
• api.Request.Request.cross_origin_stripped
• css.at-rules.font-face.font-stretch
• css.at-rules.font-face.src.format_variations
• css.properties.column-gap.grid_context
• css.properties.font-variation-settings
• css.properties.gap.grid_context
• css.properties.row-gap.grid_context
• html.elements.iframe.allowfullscreen

Sep 2018

Browsers released:

• {'browser':'chrome','version':'69'}
• {'browser':'firefox','version':'62'}
• {'browser':'safari','version':'12'}
• {'browser':'safari_ios','version':'12'}

Aug 2018

These Features became stable across all major browsers:

• css.properties.cursor.grab

Jul 2018

Browsers released:

• {'browser':'chrome','version':'68'}

These Features became stable across all major browsers:

• api.Request.destination
• css.properties.font-weight.number

Jun 2018

Browsers released:

• {'browser':'firefox','version':'61'}

These Features became stable across all major browsers:

• api.Document.body
• api.HTMLScriptElement.noModule
• api.Navigator.webdriver
• api.PerformanceEntry.worker_support
• html.elements.script.nomodule
• javascript.builtins.Array.values
• javascript.statements.export
• javascript.statements.import

May 2018

Browsers released:

• {'browser':'chrome','version':'67'}
• {'browser':'firefox','version':'60'}

These Features became stable across all major browsers:

• api.AbortSignal
• api.Cache
• api.CacheStorage
• api.CharacterData.after
• api.CharacterData.before
• api.CharacterData.nextElementSibling
• api.CharacterData.previousElementSibling
• api.CharacterData.replaceWith
• api.Client
• api.Clients
• api.ClipboardEvent.ClipboardEvent
• api.DOMTokenList.remove_duplicates
• api.DOMTokenList.replace
• api.DOMTokenList.supports
• api.DOMTokenList.value
• api.DataTransfer.items
• api.DataTransferItem.webkitGetAsEntry
• api.Document.Document
• api.Document.append
• api.Document.childElementCount
• api.Document.contentType
• api.Document.documentURI
• api.Document.firstElementChild
• api.Document.lastElementChild
• api.Document.prepend
• api.DocumentFragment.DocumentFragment
• api.DocumentFragment.append
• api.DocumentFragment.childElementCount
• api.DocumentFragment.firstElementChild
• api.DocumentFragment.getElementById
• api.DocumentFragment.lastElementChild
• api.DocumentFragment.prepend
• api.DocumentType.after
• api.DocumentType.before
• api.DocumentType.replaceWith
• api.EXT_blend_minmax
• api.Element.after
• api.Element.append
• api.Element.before
• api.Element.insertAdjacentElement
• api.Element.insertAdjacentHTML
• api.Element.insertAdjacentText
• api.Element.prepend
• api.Element.replaceWith
• api.ExtendableEvent
• api.ExtendableMessageEvent
• api.FetchEvent
• api.File.webkitRelativePath
• api.HTMLAnchorElement.origin
• api.HTMLAnchorElement.ping
• api.HTMLAreaElement.origin
• api.HTMLAreaElement.ping
• api.HTMLButtonElement.reportValidity
• api.HTMLFieldSetElement.elements
• api.HTMLFieldSetElement.reportValidity
• api.HTMLFieldSetElement.type
• api.HTMLFormElement.reportValidity
• api.HTMLInputElement.minLength
• api.HTMLInputElement.reportValidity
• api.HTMLLinkElement.as
• api.HTMLLinkElement.crossOrigin
• api.HTMLLinkElement.integrity
• api.HTMLLinkElement.relList
• api.HTMLMediaElement.play.returns_promise
• api.HTMLScriptElement.integrity
• api.HTMLSelectElement.reportValidity
• api.HTMLTextAreaElement.minLength
• api.HTMLTextAreaElement.reportValidity
• api.HTMLTextAreaElement.textLength
• api.InstallEvent
• api.MessageEvent.lastEventId
• api.MouseEvent.buttons
• api.Navigator.sendBeacon
• api.Navigator.serviceWorker
• api.NodeIterator.pointerBeforeReferenceNode
• api.NodeIterator.referenceNode
• api.OES_vertex_array_object
• api.PerformanceResourceTiming.nextHopProtocol
• api.Range.comparePoint
• api.Range.intersectsNode
• api.SVGElement.blur
• api.SVGElement.dataset
• api.SVGElement.focus
• api.SVGElement.tabIndex
• api.ServiceWorker
• api.ServiceWorkerContainer
• api.ServiceWorkerGlobalScope
• api.ServiceWorkerRegistration
• api.StorageEvent.StorageEvent
• api.URL.searchParams
• api.URL.toString
• api.URLSearchParams
• api.ValidityState.tooShort
• api.WEBGL_lose_context
• api.WebGLVertexArrayObjectOES
• api.WindowClient
• api.WorkerGlobalScope.navigator
• api.caches
• api.fetch.init_signal_parameter
• api.isSecureContext
• css.properties.gap.grid_context.percentage_values
• css.properties.transform-origin.svg_elements
• html.elements.a.ping
• html.elements.area.ping
• html.elements.input.minlength
• html.elements.link.as
• html.elements.link.crossorigin
• html.elements.link.integrity
• html.elements.script.integrity
• html.elements.textarea.minlength
• http.headers.Content-Security-Policy.upgrade-insecure-requests
• http.headers.Upgrade-Insecure-Requests

Apr 2018

Browsers released:

• {'browser':'chrome','version':'66'}
• {'browser':'edge','version':'17'}
• {'browser':'safari','version':'11.1'}

These Features became stable across all major browsers:

• api.CSSNamespaceRule.namespaceURI
• api.CSSNamespaceRule.prefix
• api.MediaStreamTrack.mute_event
• api.MediaStreamTrack.muted
• api.MediaStreamTrack.unmute_event
• css.properties.position.position_sticky_table_elements

Mar 2018

Browsers released:

• {'browser':'chrome','version':'65'}
• {'browser':'firefox','version':'59'}
• {'browser':'safari_ios','version':'11.3'}

Feb 2018

These Features became stable across all major browsers:

• api.Document.alinkColor
• api.Document.all
• api.Document.bgColor
• api.Document.captureEvents
• api.Document.clear
• api.Document.close
• api.Document.dir
• api.Document.embeds
• api.Document.fgColor
• api.Document.linkColor
• api.Document.open
• api.Document.plugins
• api.Document.releaseEvents
• api.Document.vlinkColor
• api.Document.writeln
• api.PerformanceResourceTiming.workerStart
• api.RTCRtpSender
• api.Request.cache
• http.headers.Content-Security-Policy.frame-ancestors
• http.headers.X-Content-Type-Options

Jan 2018

Browsers released:

• {'browser':'chrome','version':'64'}
• {'browser':'firefox','version':'58'}

These Features became stable across all major browsers:

• javascript.builtins.Proxy.revocable
• javascript.statements.for_of.async_iterators