Freshly implemented features with missing reference documentation

Fresh means implemented recently in either Chrome 120+ or Firefox 120+ or Safari 17+. Sorted alphabetically.

262 features found.

• Limited availability. In 3 browsers only: [chrome: 146] [chrome_android: 146] [edge: 146] api.AnimationTrigger
• Limited availability. In 3 browsers only: [chrome: 128] [chrome_android: 128] [edge: 128] api.AudioContext.error_event
• Limited availability. In 5 browsers only: [chrome: 118] [chrome_android: 118] [edge: 118] [safari: 17.2] [safari_ios: 17.2] api.CSS.cap_static
• Limited availability. In 5 browsers only: [chrome: 118] [chrome_android: 118] [edge: 118] [safari: 17.2] [safari_ios: 17.2] api.CSS.rcap_static
• Limited availability. In 5 browsers only: [chrome: 118] [chrome_android: 118] [edge: 118] [safari: 17.2] [safari_ios: 17.2] api.CSS.rch_static
• Limited availability. In 5 browsers only: [chrome: 118] [chrome_android: 118] [edge: 118] [safari: 17.2] [safari_ios: 17.2] api.CSS.rex_static
• Limited availability. In 5 browsers only: [chrome: 118] [chrome_android: 118] [edge: 118] [safari: 17.2] [safari_ios: 17.2] api.CSS.ric_static
• Limited availability. In 2 browsers only: [safari: 26] [safari_ios: 26] api.CSSFontFaceDescriptors
• Limited availability. In 2 browsers only: [safari: 26] [safari_ios: 26] api.CSSFontFaceDescriptors.font-display
• Limited availability. In 2 browsers only: [safari: 26] [safari_ios: 26] api.CSSFontFaceDescriptors.font-family
• Limited availability. In 2 browsers only: [safari: 26] [safari_ios: 26] api.CSSFontFaceDescriptors.font-feature-settings
• Limited availability. In 2 browsers only: [safari: 26] [safari_ios: 26] api.CSSFontFaceDescriptors.font-stretch
• Limited availability. In 2 browsers only: [safari: 26] [safari_ios: 26] api.CSSFontFaceDescriptors.font-style
• Limited availability. In 2 browsers only: [safari: 26] [safari_ios: 26] api.CSSFontFaceDescriptors.font-weight
• Limited availability. In 2 browsers only: [safari: 26] [safari_ios: 26] api.CSSFontFaceDescriptors.font-width
• Limited availability. In 2 browsers only: [safari: 26] [safari_ios: 26] api.CSSFontFaceDescriptors.fontDisplay
• Limited availability. In 2 browsers only: [safari: 26] [safari_ios: 26] api.CSSFontFaceDescriptors.fontFamily
• Limited availability. In 2 browsers only: [safari: 26] [safari_ios: 26] api.CSSFontFaceDescriptors.fontFeatureSettings
• Limited availability. In 2 browsers only: [safari: 26] [safari_ios: 26] api.CSSFontFaceDescriptors.fontStretch
• Limited availability. In 2 browsers only: [safari: 26] [safari_ios: 26] api.CSSFontFaceDescriptors.fontStyle
• Limited availability. In 2 browsers only: [safari: 26] [safari_ios: 26] api.CSSFontFaceDescriptors.fontWeight
• Limited availability. In 2 browsers only: [safari: 26] [safari_ios: 26] api.CSSFontFaceDescriptors.fontWidth
• Limited availability. In 2 browsers only: [safari: 26] [safari_ios: 26] api.CSSFontFaceDescriptors.size-adjust
• Limited availability. In 2 browsers only: [safari: 26] [safari_ios: 26] api.CSSFontFaceDescriptors.sizeAdjust
• Limited availability. In 2 browsers only: [safari: 26] [safari_ios: 26] api.CSSFontFaceDescriptors.src
• Limited availability. In 2 browsers only: [safari: 26] [safari_ios: 26] api.CSSFontFaceDescriptors.unicode-range
• Limited availability. In 2 browsers only: [safari: 26] [safari_ios: 26] api.CSSFontFaceDescriptors.unicodeRange
• Limited availability. In 3 browsers only: [chrome: 131] [chrome_android: 131] [edge: 131] api.CSSMarginRule
• Limited availability. In 3 browsers only: [chrome: 131] [chrome_android: 131] [edge: 131] api.CSSMarginRule.name
• Limited availability. In 3 browsers only: [chrome: 131] [chrome_android: 131] [edge: 131] api.CSSMarginRule.style
• Limited availability. In 3 browsers only: [chrome: 145] [chrome_android: 145] [edge: 145] api.CrashReportContext
• Limited availability. In 3 browsers only: [chrome: 145] [chrome_android: 145] [edge: 145] api.CrashReportContext.delete
• Limited availability. In 3 browsers only: [chrome: 145] [chrome_android: 145] [edge: 145] api.CrashReportContext.initialize
• Limited availability. In 3 browsers only: [chrome: 145] [chrome_android: 145] [edge: 145] api.CrashReportContext.set
• Limited availability. In 7 browsers only: [chrome: 73] [chrome_android: 73] [edge: 79] [firefox: 33] [firefox_android: 33] [safari: 17.4] [safari_ios: 17.4] api.DOMMatrixReadOnly.scaleNonUniform
• Limited availability. In 5 browsers only: [chrome: 141] [chrome_android: 141] [edge: 141] [safari: 26] [safari_ios: 26] api.DigitalCredential
• Limited availability. In 5 browsers only: [chrome: 141] [chrome_android: 141] [edge: 141] [safari: 26] [safari_ios: 26] api.DigitalCredential.data
• Limited availability. In 5 browsers only: [chrome: 141] [chrome_android: 141] [edge: 141] [safari: 26] [safari_ios: 26] api.DigitalCredential.protocol
• Limited availability. In 5 browsers only: [chrome: 141] [chrome_android: 141] [edge: 141] [safari: 26] [safari_ios: 26] api.DigitalCredential.toJSON
• Limited availability. In 5 browsers only: [chrome: 141] [chrome_android: 141] [edge: 141] [safari: 26] [safari_ios: 26] api.DigitalCredential.userAgentAllowsProtocol_static
• Limited availability. In 3 browsers only: [chrome: 135] [chrome_android: 135] [edge: 135] api.EventTarget.when
• Limited availability. In 3 browsers only: [chrome: 146] [chrome_android: 146] [edge: 146] api.GPUSupportedLimits.maxStorageBuffersInFragmentStage
• Limited availability. In 3 browsers only: [chrome: 146] [chrome_android: 146] [edge: 146] api.GPUSupportedLimits.maxStorageBuffersInVertexStage
• Limited availability. In 3 browsers only: [chrome: 146] [chrome_android: 146] [edge: 146] api.GPUSupportedLimits.maxStorageTexturesInFragmentStage
• Limited availability. In 3 browsers only: [chrome: 146] [chrome_android: 146] [edge: 146] api.GPUSupportedLimits.maxStorageTexturesInVertexStage
• Limited availability. In 3 browsers only: [chrome: 146] [chrome_android: 146] [edge: 146] api.GPUTexture.textureBindingViewDimension
• Limited availability. In 3 browsers only: [chrome: 133] [chrome_android: 133] [edge: 133] api.HTMLAreaElement.attributionSrc
• Limited availability. In 3 browsers only: [chrome: 126] [chrome_android: 126] [edge: 126] api.HTMLFencedFrameElement.sandbox
• Limited availability. In 3 browsers only: [chrome: 122] [chrome_android: 122] [edge: 122] api.HTMLIFrameElement.adAuctionHeaders
• Limited availability. In 3 browsers only: [chrome: 126] [chrome_android: 126] [edge: 126] api.HTMLIFrameElement.sharedStorageWritable
• Limited availability. In 3 browsers only: [chrome: 126] [chrome_android: 126] [edge: 126] api.HTMLImageElement.sharedStorageWritable
• Limited availability. In 3 browsers only: [chrome: 141] [chrome_android: 141] [edge: 141] api.IDBRecord
• Limited availability. In 3 browsers only: [chrome: 141] [chrome_android: 141] [edge: 141] api.IDBRecord.key
• Limited availability. In 3 browsers only: [chrome: 141] [chrome_android: 141] [edge: 141] api.IDBRecord.primaryKey
• Limited availability. In 3 browsers only: [chrome: 141] [chrome_android: 141] [edge: 141] api.IDBRecord.value
• Limited availability. In 3 browsers only: [chrome: 132] [chrome_android: 132] [edge: 132] api.IdentityProvider.resolve_static
• Newly available since 2026-02-14 (baseline low) api.LargestContentfulPaint.paintTime
• Limited availability. In 3 browsers only: [chrome: 145] [chrome_android: 145] [edge: 145] api.LargestContentfulPaint.presentationTime
• Limited availability. In 5 browsers only: [chrome: 141] [chrome_android: 141] [edge: 141] [firefox: 147] [firefox_android: 147] api.NavigationTransition.committed
• Limited availability. In 3 browsers only: [chrome: 145] [chrome_android: 145] [edge: 145] api.NavigationTransition.to
• Limited availability. In 3 browsers only: [chrome: 128] [chrome_android: 128] [edge: 128] api.Navigator.adAuctionComponents
• Limited availability. In 3 browsers only: [chrome: 128] [chrome_android: 128] [edge: 128] api.Navigator.canLoadAdAuctionFencedFrame
• Limited availability. In 3 browsers only: [chrome: 128] [chrome_android: 128] [edge: 128] api.Navigator.clearOriginJoinedAdInterestGroups
• Limited availability. In 3 browsers only: [chrome: 128] [chrome_android: 128] [edge: 128] api.Navigator.createAuctionNonce
• Limited availability. In 3 browsers only: [chrome: 128] [chrome_android: 128] [edge: 128] api.Navigator.deprecatedRunAdAuctionEnforcesKAnonymity
• Limited availability. In 3 browsers only: [chrome: 132] [chrome_android: 132] [edge: 132] api.Navigator.getInterestGroupAdAuctionData
• Limited availability. In 3 browsers only: [chrome: 128] [chrome_android: 128] [edge: 128] api.Navigator.joinAdInterestGroup
• Limited availability. In 3 browsers only: [chrome: 128] [chrome_android: 128] [edge: 128] api.Navigator.leaveAdInterestGroup
• Limited availability. In 3 browsers only: [chrome: 128] [chrome_android: 128] [edge: 128] api.Navigator.protectedAudience
• Limited availability. In 3 browsers only: [chrome: 128] [chrome_android: 128] [edge: 128] api.Navigator.runAdAuction
• Limited availability. In 3 browsers only: [chrome: 122] [chrome_android: 122] [edge: 122] api.Navigator.storageBuckets
• Limited availability. In 3 browsers only: [chrome: 128] [chrome_android: 128] [edge: 128] api.Navigator.updateAdInterestGroups
• Limited availability. In 2 browsers only: [safari: 18.4] [safari_ios: 18.4] api.Notification.navigate
• Limited availability. In 3 browsers only: [chrome: 135] [chrome_android: 135] [edge: 135] api.Observable
• Limited availability. In 3 browsers only: [chrome: 135] [chrome_android: 135] [edge: 135] api.Observable.Observable
• Limited availability. In 3 browsers only: [chrome: 135] [chrome_android: 135] [edge: 135] api.Observable.catch
• Limited availability. In 3 browsers only: [chrome: 135] [chrome_android: 135] [edge: 135] api.Observable.drop
• Limited availability. In 3 browsers only: [chrome: 135] [chrome_android: 135] [edge: 135] api.Observable.every
• Limited availability. In 3 browsers only: [chrome: 135] [chrome_android: 135] [edge: 135] api.Observable.filter
• Limited availability. In 3 browsers only: [chrome: 135] [chrome_android: 135] [edge: 135] api.Observable.finally
• Limited availability. In 3 browsers only: [chrome: 135] [chrome_android: 135] [edge: 135] api.Observable.find
• Limited availability. In 3 browsers only: [chrome: 135] [chrome_android: 135] [edge: 135] api.Observable.first
• Limited availability. In 3 browsers only: [chrome: 135] [chrome_android: 135] [edge: 135] api.Observable.flatMap
• Limited availability. In 3 browsers only: [chrome: 135] [chrome_android: 135] [edge: 135] api.Observable.forEach
• Limited availability. In 3 browsers only: [chrome: 135] [chrome_android: 135] [edge: 135] api.Observable.from_static
• Limited availability. In 3 browsers only: [chrome: 135] [chrome_android: 135] [edge: 135] api.Observable.inspect
• Limited availability. In 3 browsers only: [chrome: 135] [chrome_android: 135] [edge: 135] api.Observable.last
• Limited availability. In 3 browsers only: [chrome: 135] [chrome_android: 135] [edge: 135] api.Observable.map
• Limited availability. In 3 browsers only: [chrome: 135] [chrome_android: 135] [edge: 135] api.Observable.reduce
• Limited availability. In 3 browsers only: [chrome: 135] [chrome_android: 135] [edge: 135] api.Observable.some
• Limited availability. In 3 browsers only: [chrome: 135] [chrome_android: 135] [edge: 135] api.Observable.subscribe
• Limited availability. In 3 browsers only: [chrome: 135] [chrome_android: 135] [edge: 135] api.Observable.switchMap
• Limited availability. In 3 browsers only: [chrome: 135] [chrome_android: 135] [edge: 135] api.Observable.take
• Limited availability. In 3 browsers only: [chrome: 135] [chrome_android: 135] [edge: 135] api.Observable.takeUntil
• Limited availability. In 3 browsers only: [chrome: 135] [chrome_android: 135] [edge: 135] api.Observable.toArray
• Limited availability. In 3 browsers only: [chrome: 145] [chrome_android: 145] [edge: 145] api.Origin
• Limited availability. In 3 browsers only: [chrome: 145] [chrome_android: 145] [edge: 145] api.Origin.Origin
• Limited availability. In 3 browsers only: [chrome: 145] [chrome_android: 145] [edge: 145] api.Origin.from_static
• Limited availability. In 3 browsers only: [chrome: 145] [chrome_android: 145] [edge: 145] api.Origin.isSameOrigin
• Limited availability. In 3 browsers only: [chrome: 145] [chrome_android: 145] [edge: 145] api.Origin.isSameSite
• Limited availability. In 3 browsers only: [chrome: 145] [chrome_android: 145] [edge: 145] api.Origin.opaque
• Limited availability. In 3 browsers only: [chrome: 145] [chrome_android: 145] [edge: 145] api.PerformanceElementTiming.paintTime
• Limited availability. In 3 browsers only: [chrome: 145] [chrome_android: 145] [edge: 145] api.PerformanceElementTiming.presentationTime
• Limited availability. In 3 browsers only: [chrome: 145] [chrome_android: 145] [edge: 145] api.PerformanceLongAnimationFrameTiming.paintTime
• Limited availability. In 3 browsers only: [chrome: 145] [chrome_android: 145] [edge: 145] api.PerformanceLongAnimationFrameTiming.presentationTime
• Limited availability. In 3 browsers only: [chrome: 145] [chrome_android: 145] [edge: 145] api.PerformanceNavigationTiming.confidence
• Limited availability. In 5 browsers only: [chrome: 145] [chrome_android: 145] [edge: 145] [firefox: 140] [firefox_android: 140] api.PerformancePaintTiming.paintTime
• Limited availability. In 5 browsers only: [chrome: 145] [chrome_android: 145] [edge: 145] [firefox: 140] [firefox_android: 140] api.PerformancePaintTiming.presentationTime
• Limited availability. In 3 browsers only: [chrome: 143] [chrome_android: 143] [edge: 143] api.PerformanceResourceTiming.contentEncoding
• Limited availability. In 3 browsers only: [chrome: 140] [chrome_android: 140] [edge: 140] api.PerformanceResourceTiming.workerCacheLookupStart
• Limited availability. In 3 browsers only: [chrome: 140] [chrome_android: 140] [edge: 140] api.PerformanceResourceTiming.workerRouterEvaluationStart
• Limited availability. In 3 browsers only: [chrome: 145] [chrome_android: 145] [edge: 145] api.PerformanceTimingConfidence
• Limited availability. In 3 browsers only: [chrome: 145] [chrome_android: 145] [edge: 145] api.PerformanceTimingConfidence.randomizedTriggerRate
• Limited availability. In 3 browsers only: [chrome: 145] [chrome_android: 145] [edge: 145] api.PerformanceTimingConfidence.toJSON
• Limited availability. In 3 browsers only: [chrome: 145] [chrome_android: 145] [edge: 145] api.PerformanceTimingConfidence.value
• Limited availability. In 3 browsers only: [chrome: 127] [chrome_android: 127] [edge: 127] api.ProtectedAudience
• Limited availability. In 3 browsers only: [chrome: 127] [chrome_android: 127] [edge: 127] api.ProtectedAudience.queryFeatureSupport
• Limited availability. In 2 browsers only: [safari: 18.4] [safari_ios: 18.4] api.PushEvent.notification
• Limited availability. In 6 browsers only: [chrome: 138] [chrome_android: 138] [firefox: 137] [firefox_android: 137] [safari: 16] [safari_ios: 16.4] api.PushSubscriptionChangeEvent
• Limited availability. In 6 browsers only: [chrome: 138] [chrome_android: 138] [firefox: 137] [firefox_android: 137] [safari: 16.1] [safari_ios: 16.4] api.PushSubscriptionChangeEvent.PushSubscriptionChangeEvent
• Limited availability. In 6 browsers only: [chrome: 138] [chrome_android: 138] [firefox: 137] [firefox_android: 137] [safari: 16] [safari_ios: 16.4] api.PushSubscriptionChangeEvent.newSubscription
• Limited availability. In 6 browsers only: [chrome: 138] [chrome_android: 138] [firefox: 137] [firefox_android: 137] [safari: 16] [safari_ios: 16.4] api.PushSubscriptionChangeEvent.oldSubscription
• Limited availability. In 3 browsers only: [chrome: 124] [chrome_android: 124] [edge: 124] api.RTCIceCandidate.relayProtocol
• Limited availability. In 3 browsers only: [chrome: 124] [chrome_android: 124] [edge: 124] api.RTCIceCandidate.url
• Limited availability. In 5 browsers only: [chrome: 144] [chrome_android: 144] [edge: 144] [firefox: 61] [firefox_android: 61] api.SVGAElement.referrerPolicy
• Newly available since 2025-12-12 (baseline low) api.SVGScriptElement.async
• Limited availability. In 5 browsers only: [chrome: 146] [chrome_android: 146] [edge: 146] [firefox: 148] [firefox_android: 148] api.Sanitizer
• Limited availability. In 5 browsers only: [chrome: 146] [chrome_android: 146] [edge: 146] [firefox: 148] [firefox_android: 148] api.Sanitizer.Sanitizer
• Limited availability. In 3 browsers only: [chrome: 134] [chrome_android: 134] [edge: 134] api.SharedStorage.batchUpdate
• Limited availability. In 3 browsers only: [chrome: 126] [chrome_android: 126] [edge: 126] api.SharedStorage.createWorklet
• Limited availability. In 3 browsers only: [chrome: 126] [chrome_android: 126] [edge: 126] api.SharedStorage.get
• Limited availability. In 3 browsers only: [chrome: 126] [chrome_android: 126] [edge: 126] api.SharedStorage.run
• Limited availability. In 3 browsers only: [chrome: 126] [chrome_android: 126] [edge: 126] api.SharedStorage.selectURL
• Limited availability. In 3 browsers only: [chrome: 126] [chrome_android: 126] [edge: 126] api.SharedStorage.worklet
• Limited availability. In 3 browsers only: [chrome: 134] [chrome_android: 134] [edge: 134] api.SharedStorageAppendMethod
• Limited availability. In 3 browsers only: [chrome: 134] [chrome_android: 134] [edge: 134] api.SharedStorageAppendMethod.SharedStorageAppendMethod
• Limited availability. In 3 browsers only: [chrome: 134] [chrome_android: 134] [edge: 134] api.SharedStorageClearMethod
• Limited availability. In 3 browsers only: [chrome: 134] [chrome_android: 134] [edge: 134] api.SharedStorageClearMethod.SharedStorageClearMethod
• Limited availability. In 3 browsers only: [chrome: 134] [chrome_android: 134] [edge: 134] api.SharedStorageDeleteMethod
• Limited availability. In 3 browsers only: [chrome: 134] [chrome_android: 134] [edge: 134] api.SharedStorageDeleteMethod.SharedStorageDeleteMethod
• Limited availability. In 3 browsers only: [chrome: 134] [chrome_android: 134] [edge: 134] api.SharedStorageModifierMethod
• Limited availability. In 3 browsers only: [chrome: 134] [chrome_android: 134] [edge: 134] api.SharedStorageSetMethod
• Limited availability. In 3 browsers only: [chrome: 134] [chrome_android: 134] [edge: 134] api.SharedStorageSetMethod.SharedStorageSetMethod
• Limited availability. In 3 browsers only: [chrome: 126] [chrome_android: 126] [edge: 126] api.SharedStorageWorklet.run
• Limited availability. In 3 browsers only: [chrome: 126] [chrome_android: 126] [edge: 126] api.SharedStorageWorklet.selectURL
• Limited availability. In 3 browsers only: [chrome: 134] [chrome_android: 134] [edge: 134] api.SharedStorageWorkletGlobalScope.interestGroups
• Limited availability. In 3 browsers only: [chrome: 122] [chrome_android: 122] [edge: 122] api.StorageBucket
• Limited availability. In 3 browsers only: [chrome: 122] [chrome_android: 122] [edge: 122] api.StorageBucket.caches
• Limited availability. In 3 browsers only: [chrome: 122] [chrome_android: 122] [edge: 122] api.StorageBucket.estimate
• Limited availability. In 3 browsers only: [chrome: 122] [chrome_android: 122] [edge: 122] api.StorageBucket.expires
• Limited availability. In 3 browsers only: [chrome: 122] [chrome_android: 122] [edge: 122] api.StorageBucket.getDirectory
• Limited availability. In 3 browsers only: [chrome: 122] [chrome_android: 122] [edge: 122] api.StorageBucket.indexedDB
• Limited availability. In 3 browsers only: [chrome: 122] [chrome_android: 122] [edge: 122] api.StorageBucket.name
• Limited availability. In 3 browsers only: [chrome: 122] [chrome_android: 122] [edge: 122] api.StorageBucket.persist
• Limited availability. In 3 browsers only: [chrome: 122] [chrome_android: 122] [edge: 122] api.StorageBucket.persisted
• Limited availability. In 3 browsers only: [chrome: 122] [chrome_android: 122] [edge: 122] api.StorageBucket.setExpires
• Limited availability. In 3 browsers only: [chrome: 122] [chrome_android: 122] [edge: 122] api.StorageBucketManager
• Limited availability. In 3 browsers only: [chrome: 122] [chrome_android: 122] [edge: 122] api.StorageBucketManager.delete
• Limited availability. In 3 browsers only: [chrome: 122] [chrome_android: 122] [edge: 122] api.StorageBucketManager.keys
• Limited availability. In 3 browsers only: [chrome: 122] [chrome_android: 122] [edge: 122] api.StorageBucketManager.open
• Limited availability. In 3 browsers only: [chrome: 135] [chrome_android: 135] [edge: 135] api.Subscriber
• Limited availability. In 3 browsers only: [chrome: 135] [chrome_android: 135] [edge: 135] api.Subscriber.active
• Limited availability. In 3 browsers only: [chrome: 135] [chrome_android: 135] [edge: 135] api.Subscriber.addTeardown
• Limited availability. In 3 browsers only: [chrome: 135] [chrome_android: 135] [edge: 135] api.Subscriber.complete
• Limited availability. In 3 browsers only: [chrome: 135] [chrome_android: 135] [edge: 135] api.Subscriber.error
• Limited availability. In 3 browsers only: [chrome: 135] [chrome_android: 135] [edge: 135] api.Subscriber.next
• Limited availability. In 3 browsers only: [chrome: 135] [chrome_android: 135] [edge: 135] api.Subscriber.signal
• Limited availability. In 1 browsers only: [chrome: 138] api.Summarizer
• Limited availability. In 1 browsers only: [chrome: 138] api.Translator
• Limited availability. In 3 browsers only: [chrome: 145] [chrome_android: 145] [edge: 145] api.VideoFrame.metadata
• Limited availability. In 3 browsers only: [chrome: 144] [chrome_android: 144] [edge: 144] api.ViewTransition.waitUntil
• Limited availability. In 3 browsers only: [chrome: 138] [chrome_android: 138] [edge: 138] api.Viewport.segments
• Limited availability. In 3 browsers only: [chrome: 122] [chrome_android: 122] [edge: 122] api.WebGL2RenderingContext.drawingBufferFormat
• Limited availability. In 3 browsers only: [chrome: 122] [chrome_android: 122] [edge: 122] api.WebGL2RenderingContext.drawingBufferStorage
• Limited availability. In 3 browsers only: [chrome: 122] [chrome_android: 122] [edge: 122] api.WebGLRenderingContext.drawingBufferFormat
• Limited availability. In 3 browsers only: [chrome: 122] [chrome_android: 122] [edge: 122] api.WebGLRenderingContext.drawingBufferStorage
• Limited availability. In 3 browsers only: [chrome: 124] [chrome_android: 124] [edge: 124] api.WebSocketError
• Limited availability. In 3 browsers only: [chrome: 124] [chrome_android: 124] [edge: 124] api.WebSocketError.WebSocketError
• Limited availability. In 3 browsers only: [chrome: 124] [chrome_android: 124] [edge: 124] api.WebSocketError.closeCode
• Limited availability. In 3 browsers only: [chrome: 124] [chrome_android: 124] [edge: 124] api.WebSocketError.reason
• Limited availability. In 2 browsers only: [safari: 26.4] [safari_ios: 26.4] api.WebTransport.anticipatedConcurrentIncomingBidirectionalStreams
• Limited availability. In 2 browsers only: [safari: 26.4] [safari_ios: 26.4] api.WebTransport.anticipatedConcurrentIncomingUnidirectionalStreams
• Limited availability. In 2 browsers only: [safari: 26.4] [safari_ios: 26.4] api.WebTransport.createSendGroup
• Limited availability. In 2 browsers only: [safari: 26.4] [safari_ios: 26.4] api.WebTransport.draining
• Limited availability. In 5 browsers only: [chrome: 143] [chrome_android: 143] [edge: 143] [safari: 26.4] [safari_ios: 26.4] api.WebTransport.protocol
• Limited availability. In 2 browsers only: [safari: 26.4] [safari_ios: 26.4] api.WebTransport.supportsReliableOnly_static
• Limited availability. In 2 browsers only: [safari: 26.4] [safari_ios: 26.4] api.WebTransportDatagramDuplexStream.createWritable
• Limited availability. In 2 browsers only: [safari: 26.4] [safari_ios: 26.4] api.WebTransportDatagramsWritable
• Limited availability. In 2 browsers only: [safari: 26.4] [safari_ios: 26.4] api.WebTransportDatagramsWritable.sendGroup
• Limited availability. In 2 browsers only: [safari: 26.4] [safari_ios: 26.4] api.WebTransportDatagramsWritable.sendOrder
• Limited availability. In 2 browsers only: [safari: 26.4] [safari_ios: 26.4] api.WebTransportSendGroup
• Limited availability. In 2 browsers only: [safari: 26.4] [safari_ios: 26.4] api.WebTransportSendGroup.getStats
• Limited availability. In 4 browsers only: [firefox: 114] [firefox_android: 114] [safari: 26.4] [safari_ios: 26.4] api.WebTransportSendStream.getWriter
• Limited availability. In 2 browsers only: [safari: 26.4] [safari_ios: 26.4] api.WebTransportSendStream.sendGroup
• Limited availability. In 3 browsers only: [chrome: 145] [chrome_android: 145] [edge: 145] api.Window.crashReport
• Limited availability. In 2 browsers only: [safari: 18.4] [safari_ios: 18.4] api.Window.pushManager
• Limited availability. In 3 browsers only: [chrome: 122] [chrome_android: 122] [edge: 122] api.WorkerNavigator.storageBuckets
• Limited availability. In 3 browsers only: [chrome: 139] [chrome_android: 139] [edge: 139] api.XRDepthInformation.projectionMatrix
• Limited availability. In 3 browsers only: [chrome: 139] [chrome_android: 139] [edge: 139] api.XRDepthInformation.transform
• Limited availability. In 3 browsers only: [chrome: 139] [chrome_android: 139] [edge: 139] api.XRSession.depthActive
• Limited availability. In 3 browsers only: [chrome: 139] [chrome_android: 139] [edge: 139] api.XRSession.depthType
• Limited availability. In 3 browsers only: [chrome: 139] [chrome_android: 139] [edge: 139] api.XRSession.pauseDepthSensing
• Limited availability. In 3 browsers only: [chrome: 139] [chrome_android: 139] [edge: 139] api.XRSession.resumeDepthSensing
• Limited availability. In 3 browsers only: [chrome: 144] [chrome_android: 144] [edge: 144] api.XRView.index
• Limited availability. In 3 browsers only: [chrome: 144] [chrome_android: 144] [edge: 144] api.XRVisibilityMaskChangeEvent
• Limited availability. In 3 browsers only: [chrome: 144] [chrome_android: 144] [edge: 144] api.XRVisibilityMaskChangeEvent.XRVisibilityMaskChangeEvent
• Limited availability. In 3 browsers only: [chrome: 144] [chrome_android: 144] [edge: 144] api.XRVisibilityMaskChangeEvent.eye
• Limited availability. In 3 browsers only: [chrome: 144] [chrome_android: 144] [edge: 144] api.XRVisibilityMaskChangeEvent.index
• Limited availability. In 3 browsers only: [chrome: 144] [chrome_android: 144] [edge: 144] api.XRVisibilityMaskChangeEvent.indices
• Limited availability. In 3 browsers only: [chrome: 144] [chrome_android: 144] [edge: 144] api.XRVisibilityMaskChangeEvent.session
• Limited availability. In 3 browsers only: [chrome: 144] [chrome_android: 144] [edge: 144] api.XRVisibilityMaskChangeEvent.vertices
• Limited availability. In 3 browsers only: [chrome: 146] [chrome_android: 146] [edge: 146] css.properties.animation-trigger
• Limited availability. In 3 browsers only: [chrome: 145] [chrome_android: 145] [edge: 145] css.properties.column-height
• Limited availability. In 3 browsers only: [chrome: 145] [chrome_android: 145] [edge: 145] css.properties.column-wrap
• Limited availability. In 2 browsers only: [safari: 26.4] [safari_ios: 26.4] css.properties.flow-tolerance
• Limited availability. In 1 browsers only: [safari: 18.4] css.properties.font-width
• Limited availability. In 3 browsers only: [chrome: 133] [chrome_android: 133] [edge: 133] css.properties.scroll-initial-target
• Limited availability. In 3 browsers only: [chrome: 146] [chrome_android: 146] [edge: 146] css.properties.timeline-trigger
• Limited availability. In 3 browsers only: [chrome: 146] [chrome_android: 146] [edge: 146] css.properties.timeline-trigger-name
• Limited availability. In 3 browsers only: [chrome: 146] [chrome_android: 146] [edge: 146] css.properties.timeline-trigger-source
• Limited availability. In 3 browsers only: [chrome: 146] [chrome_android: 146] [edge: 146] css.properties.trigger-scope
• Limited availability. In 3 browsers only: [chrome: 140] [chrome_android: 140] [edge: 140] css.properties.view-transition-group
• Limited availability. In 3 browsers only: [chrome: 140] [chrome_android: 140] [edge: 140] css.selectors.view-transition-group-children
• Limited availability. In 2 browsers only: [safari: 26.2] [safari_ios: 26.2] css.types.random
• Limited availability. In 5 browsers only: [chrome: 134] [chrome_android: 134] [edge: 134] [firefox: 141] [firefox_android: 141] javascript.builtins.AsyncDisposableStack.@@asyncDispose
• Limited availability. In 5 browsers only: [chrome: 134] [chrome_android: 134] [edge: 134] [firefox: 141] [firefox_android: 141] javascript.builtins.AsyncIterator.@@asyncDispose
• Limited availability. In 5 browsers only: [chrome: 134] [chrome_android: 134] [edge: 134] [firefox: 141] [firefox_android: 141] javascript.builtins.DisposableStack.@@dispose
• Limited availability. In 5 browsers only: [chrome: 134] [chrome_android: 134] [edge: 134] [firefox: 141] [firefox_android: 141] javascript.builtins.Iterator.@@dispose
• Limited availability. In 3 browsers only: [chrome: 141] [chrome_android: 141] [edge: 141] http.headers.Signature
• Limited availability. In 3 browsers only: [chrome: 141] [chrome_android: 141] [edge: 141] http.headers.Signature-Input
• Limited availability. In 3 browsers only: [chrome: 141] [chrome_android: 141] [edge: 141] http.headers.Unencoded-Digest
• Limited availability. In 1 browsers only: [safari: 18.4] svg.global_attributes.font-width
• Newly available since 2025-03-31 (baseline low) webassembly.api.JSTag_static
• Limited availability. In 5 browsers only: [chrome: 137] [chrome_android: 137] [edge: 137] [safari: 16] [safari_ios: 16] webassembly.branch-hinting
• Limited availability. In 6 browsers only: [chrome: 137] [chrome_android: 137] [firefox: 131] [firefox_android: 131] [safari: 18.4] [safari_ios: 18.4] webassembly.exceptionsFinal
• Newly available since 2025-12-12 (baseline low) webassembly.jsStringBuiltins
• Newly available since 2024-12-11 (baseline low) webassembly.garbage-collection
• Limited availability. In 2 browsers only: [chrome: 137] [edge: 137] webassembly.jspi
• Limited availability. In 5 browsers only: [chrome: 133] [chrome_android: 133] [edge: 133] [firefox: 134] [firefox_android: 134] webassembly.memory64
• Limited availability. In 5 browsers only: [chrome: 114] [chrome_android: 114] [edge: 114] [firefox: 146] [firefox_android: 146] webassembly.relaxed-SIMD
• Newly available since 2024-12-11 (baseline low) webassembly.tail-calls
• Newly available since 2024-09-16 (baseline low) webassembly.typedFunctionReferences
• Newly available since 2024-03-05 (baseline low) webassembly.extended-constant-expressions
• Limited availability. In 3 browsers only: [chrome: 140] [chrome_android: 140] [edge: 140] webdriver.bidi.bluetooth
• Limited availability. In 5 browsers only: [chrome: 126] [chrome_android: 126] [edge: 126] [firefox: 117] [firefox_android: 117] webdriver.bidi.browser
• Limited availability. In 5 browsers only: [chrome: 126] [chrome_android: 126] [edge: 126] [firefox: 99] [firefox_android: 99] webdriver.bidi.browsingContext
• Limited availability. In 5 browsers only: [chrome: 137] [chrome_android: 137] [edge: 137] [firefox: 139] [firefox_android: 139] webdriver.bidi.emulation
• Limited availability. In 5 browsers only: [chrome: 126] [chrome_android: 126] [edge: 126] [firefox: 113] [firefox_android: 113] webdriver.bidi.input
• Limited availability. In 5 browsers only: [chrome: 126] [chrome_android: 126] [edge: 126] [firefox: 94] [firefox_android: 94] webdriver.bidi.log
• Limited availability. In 5 browsers only: [chrome: 126] [chrome_android: 126] [edge: 126] [firefox: 110] [firefox_android: 110] webdriver.bidi.network
• Limited availability. In 5 browsers only: [chrome: 126] [chrome_android: 126] [edge: 126] [firefox: 127] [firefox_android: 127] webdriver.bidi.permission
• Limited availability. In 5 browsers only: [chrome: 126] [chrome_android: 126] [edge: 126] [firefox: 106] [firefox_android: 106] webdriver.bidi.script
• Limited availability. In 5 browsers only: [chrome: 126] [chrome_android: 126] [edge: 126] [firefox: 92] [firefox_android: 92] webdriver.bidi.session
• Limited availability. In 5 browsers only: [chrome: 126] [chrome_android: 126] [edge: 126] [firefox: 124] [firefox_android: 124] webdriver.bidi.storage
• Limited availability. In 5 browsers only: [chrome: 135] [chrome_android: 135] [edge: 135] [firefox: 137] [firefox_android: 137] webdriver.bidi.webExtension
• Limited availability. In 3 browsers only: [chrome: 129] [chrome_android: 129] [edge: 129] webdriver.classic.CreateVirtualPressureSource
• Limited availability. In 3 browsers only: [chrome: 120] [chrome_android: 120] [edge: 120] webdriver.classic.CreateVirtualSensor
• Limited availability. In 3 browsers only: [chrome: 129] [chrome_android: 129] [edge: 129] webdriver.classic.DeleteVirtualPressureSource
• Limited availability. In 3 browsers only: [chrome: 120] [chrome_android: 120] [edge: 120] webdriver.classic.DeleteVirtualSensor
• Limited availability. In 3 browsers only: [chrome: 120] [chrome_android: 120] [edge: 120] webdriver.classic.GetVirtualSensorInformation
• Limited availability. In 3 browsers only: [chrome: 129] [chrome_android: 129] [edge: 129] webdriver.classic.UpdateVirtualPressureSource
• Limited availability. In 3 browsers only: [chrome: 120] [chrome_android: 120] [edge: 120] webdriver.classic.UpdateVirtualSensorReading