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Browser API Tester

Test which JavaScript APIs and browser features are supported in your current browser.

This tool processes all data locally on your device.

Input

Supported

Not supported

APIs total

1019

Custom expression

Click Run to test

19 characters

Output

status	API	Chrome	Firefox	Safari	Edge
—	ANGLE_instanced_arrays	32	47	8	12
—	AbortController	66	57	12.1	16
—	AbortPaymentEvent	70	—	—	79
—	AbortSignal	66	57	11.1	16
—	AbsoluteOrientationSensor	67	—	—	79
—	AbstractRange	90	69	14.1	90
—	Accelerometer	67	—	—	79
—	AmbientLightSensor	67	—	—	79
—	AnalyserNode	14	25	6	12
—	Animation	75	48	13.1	79
—	AnimationEffect	75	63	13.1	79
—	AnimationEvent	43	5	9	12
—	AnimationPlaybackEvent	84	63	13.1	84
—	AnimationTimeline	84	75	13.1	84
—	AnimationTrigger	146	—	—	146
—	Attr	1	1	1	12
—	AudioBuffer	14	25	6	12
—	AudioBufferSourceNode	14	25	6	12
—	AudioContext	35	25	14.1	12
—	AudioData	94	130	26	94
—	AudioDecoder	94	130	26	94
—	AudioDestinationNode	14	25	6	12
—	AudioEncoder	94	130	26	94
—	AudioListener	14	25	6	12
—	AudioNode	14	25	6	12
—	AudioParam	14	25	6	12
—	AudioParamMap	66	76	14.1	79
—	AudioPlaybackStats	146	—	—	146
—	AudioScheduledSourceNode	57	53	14	79
—	AudioSession	—	—	16.4	—
—	AudioSinkInfo	110	—	—	110
—	AudioTrack	37	33	8	79
—	AudioTrackList	37	33	7	79
—	AudioWorklet	66	76	14.1	79
—	AudioWorkletGlobalScope	66	76	14.1	79
—	AudioWorkletNode	66	76	14.1	79
—	AudioWorkletProcessor	64	76	14.1	79
—	AuthenticatorAssertionResponse	67	60	13	18
—	AuthenticatorAttestationResponse	67	60	13	18
—	AuthenticatorResponse	67	60	13	18
—	BackgroundFetchEvent	74	—	—	79
—	BackgroundFetchManager	74	—	—	79
—	BackgroundFetchRecord	74	—	—	79
—	BackgroundFetchRegistration	74	—	—	79
—	BackgroundFetchUpdateUIEvent	74	—	—	79
—	BarProp	1	1	3	12
—	BarcodeDetector	88	—	17	83
—	BaseAudioContext	56	53	14.1	79
—	BatteryManager	38	43	—	79
—	BeforeInstallPromptEvent	44	—	—	79
—	BeforeUnloadEvent	30	1.5	7	12
—	BiquadFilterNode	14	25	6	12
—	Blob	5	4	6	12
—	BlobEvent	49	21	14	79
—	Bluetooth	70	—	—	79
—	BluetoothCharacteristicProperties	70	—	—	79
—	BluetoothDevice	70	—	—	79
—	BluetoothRemoteGATTCharacteristic	70	—	—	79
—	BluetoothRemoteGATTDescriptor	70	—	—	79
—	BluetoothRemoteGATTServer	70	—	—	79
—	BluetoothRemoteGATTService	70	—	—	79
—	BluetoothUUID	70	—	—	79
—	BroadcastChannel	54	38	15.4	79
—	BrowserCaptureMediaStreamTrack	104	—	—	104
—	BufferedChangeEvent	—	—	17	—
—	ByteLengthQueuingStrategy	52	65	10.1	16
—	CDATASection	1	1	3	12
—	CSS	28	22	9	12
—	CSSAnimation	84	75	13.1	84
—	CSSConditionRule	56	20	14.1	12
—	CSSContainerRule	105	110	16	105
—	CSSCounterStyleRule	91	33	17	91
—	CSSCustomMediaRule	—	146	—	—
—	CSSFontFaceDescriptors	—	150	26	—
—	CSSFontFaceRule	1	3.5	3.1	12
—	CSSFontFeatureValuesMap	111	—	—	111
—	CSSFontFeatureValuesRule	134	34	16.2	134
—	CSSFontPaletteValuesRule	101	107	15.4	101
—	CSSFunctionDeclarations	139	—	—	139
—	CSSFunctionDescriptors	139	—	—	139
—	CSSFunctionRule	139	—	—	139
—	CSSGroupingRule	45	20	14.1	12
—	CSSImageValue	66	—	16.4	79
—	CSSImportRule	1	1	1	12
—	CSSKeyframeRule	31	48	9	12
—	CSSKeyframesRule	31	48	9.1	12
—	CSSKeywordValue	66	—	16.4	79
—	CSSLayerBlockRule	99	97	15.4	99
—	CSSLayerStatementRule	99	97	15.4	99
—	CSSMarginRule	131	—	—	131
—	CSSMathClamp	100	—	16.4	100
—	CSSMathInvert	66	—	16.4	79
—	CSSMathMax	66	—	16.4	79
—	CSSMathMin	66	—	16.4	79
—	CSSMathNegate	66	—	16.4	79
—	CSSMathProduct	66	—	16.4	79
—	CSSMathSum	66	—	16.4	79
—	CSSMathValue	66	—	16.4	79
—	CSSMatrixComponent	66	—	16.4	79
—	CSSMediaRule	1	1	3	12
—	CSSNamespaceRule	47	53	10.1	12
—	CSSNestedDeclarations	130	132	18.2	130
—	CSSNumericArray	66	—	16.4	79
—	CSSNumericValue	66	—	16.4	79
—	CSSPageDescriptors	—	129	26	—
—	CSSPageRule	1	19	3	12
—	CSSPerspective	66	—	16.4	79
—	CSSPositionTryDescriptors	125	147	26	125
—	CSSPositionTryRule	125	147	26	125
—	CSSPropertyRule	85	128	16.4	85
—	CSSPseudoElement	149	75	—	149
—	CSSRotate	66	—	16.4	79
—	CSSRule	1	1	1	12
—	CSSRuleList	1	1	1	12
—	CSSScale	66	—	16.4	79
—	CSSScopeRule	118	146	17.4	118
—	CSSSkew	66	—	16.4	79
—	CSSSkewX	66	—	16.4	79
—	CSSSkewY	66	—	16.4	79
—	CSSStartingStyleRule	117	129	17.5	117
—	CSSStyleDeclaration	1	1	1	12
—	CSSStyleProperties	—	144	26	—
—	CSSStyleRule	1	1	1	12
—	CSSStyleSheet	1	1	1	12
—	CSSStyleValue	66	—	16.4	79
—	CSSSupportsRule	28	22	9	12
—	CSSTransformComponent	66	—	16.4	79
—	CSSTransformValue	66	—	16.4	79
—	CSSTransition	84	75	13.1	84
—	CSSTranslate	66	—	16.4	79
—	CSSUnitValue	66	—	16.4	79
—	CSSUnparsedValue	66	—	16.4	79
—	CSSVariableReferenceValue	66	—	16.4	79
—	CSSViewTransitionRule	126	—	18.2	126
—	Cache	40	41	11.1	16
—	CacheStorage	43	41	11.1	16
—	CanMakePaymentEvent	70	—	—	79
—	CanvasCaptureMediaStreamTrack	51	—	11	79
—	CanvasGradient	1	1.5	2	12
—	CanvasPattern	1	1.5	2	12
—	CanvasRenderingContext2D	1	1.5	2	12
—	CaptureController	109	—	—	109
—	CaretPosition	128	20	26.2	128
—	ChannelMergerNode	14	25	6	12
—	ChannelSplitterNode	14	25	6	12
—	ChapterInformation	127	—	—	127
—	CharacterBoundsUpdateEvent	121	—	—	121
—	CharacterData	1	1	1	12
—	Client	40	44	11.1	17
—	Clients	40	44	11.1	17
—	Clipboard	66	63	13.1	79
—	ClipboardChangeEvent	144	—	—	144
—	ClipboardEvent	41	22	10.1	12
—	ClipboardItem	76	127	13.1	79
—	CloseEvent	15	8	6	12
—	CloseWatcher	126	149	—	126
—	CommandEvent	135	144	26.2	135
—	Comment	1	1	3	12
—	CompositionEvent	15	9	5	12
—	CompressionStream	80	113	16.4	80
—	ConstantSourceNode	56	52	14.1	79
—	ContactAddress	—	—	—	—
—	ContactsManager	—	—	—	—
—	ContentIndex	—	—	—	—
—	ContentIndexEvent	—	—	—	—
—	ContentVisibilityAutoStateChangeEvent	108	125	18	108
—	ConvolverNode	14	25	6	12
—	CookieChangeEvent	87	140	18.4	87
—	CookieStore	87	140	18.4	87
—	CookieStoreManager	87	140	—	87
—	CountQueuingStrategy	52	65	10.1	16
—	CrashReportContext	145	—	—	145
—	CreateMonitor	138	—	—	138
—	Credential	51	60	13	18
—	CredentialsContainer	51	60	13	18
—	CropTarget	104	—	—	104
—	Crypto	11	21	5	12
—	CryptoKey	37	34	7	12
—	CustomElementRegistry	54	63	10.1	79
—	CustomEvent	5	6	5	12
—	CustomStateSet	90	126	17.4	90
—	DOMException	1	1	1	12
—	DOMImplementation	1	1	1	12
—	DOMMatrix	61	33	11	79
—	DOMMatrixReadOnly	61	33	11	79
—	DOMParser	1	1	1.3	12
—	DOMPoint	61	31	10.1	79
—	DOMPointReadOnly	61	31	10.1	79
—	DOMQuad	61	31	11	79
—	DOMRect	61	27	10.1	79
—	DOMRectList	61	27	10.1	79
—	DOMRectReadOnly	61	31	10.1	79
—	DOMStringList	1	1	5.1	12
—	DOMStringMap	7	6	5.1	12
—	DOMTokenList	8	3.6	5.1	12
—	DataCue	—	—	11	12
—	DataTransfer	3	3.5	4	12
—	DataTransferItem	11	50	5.1	12
—	DataTransferItemList	13	50	6	12
—	DecompressionStream	80	113	16.4	80
—	DedicatedWorkerGlobalScope	4	3.5	4	12
—	DelayNode	24	25	7	12
—	DelegatedInkTrailPresenter	94	—	—	93
—	DeviceMotionEvent	31	6	17	12
—	DeviceMotionEventAcceleration	31	6	—	12
—	DeviceMotionEventRotationRate	31	6	—	12
—	DeviceOrientationEvent	7	6	17	12
—	DevicePosture	132	—	—	132
—	DigitalCredential	141	—	26	141
—	Directory	—	30	—	—
—	Document	1	1	1	12
—	DocumentFragment	1	1	3	12
—	DocumentPictureInPicture	116	151	—	116
—	DocumentPictureInPictureEvent	116	151	—	116
—	DocumentTimeline	84	75	13.1	84
—	DocumentType	1	1	3	12
—	DragEvent	46	3.5	14	12
—	DynamicsCompressorNode	14	25	6	12
—	EXT_blend_minmax	38	47	9	17
—	EXT_color_buffer_float	56	51	15	79
—	EXT_color_buffer_half_float	63	47	14	17
—	EXT_disjoint_timer_query	70	51	—	79
—	EXT_disjoint_timer_query_webgl2	70	—	—	80
—	EXT_float_blend	75	67	14.1	79
—	EXT_frag_depth	38	47	9	93
—	EXT_sRGB	40	58	9	80
—	EXT_shader_texture_lod	38	47	8	93
—	EXT_texture_compression_bptc	93	68	16	93
—	EXT_texture_compression_rgtc	93	65	14.1	93
—	EXT_texture_filter_anisotropic	34	47	9.1	12
—	EXT_texture_norm16	87	—	16	87
—	EditContext	121	—	—	121
—	Element	1	1	1	12
—	ElementInternals	77	93	16.4	79
—	EncodedAudioChunk	94	130	26	94
—	EncodedVideoChunk	94	130	16.4	94
—	ErrorEvent	10	27	6	12
—	Event	1	1	1	12
—	EventCounts	85	89	26.2	85
—	EventSource	6	6	5	79
—	EventTarget	1	1	1	12
—	ExtendableCookieChangeEvent	87	140	18.4	87
—	ExtendableEvent	40	44	11.1	17
—	ExtendableMessageEvent	51	44	11.1	17
—	EyeDropper	95	—	—	95
—	FeaturePolicy	74	65	—	79
—	FederatedCredential	51	—	—	79
—	Fence	126	—	—	126
—	FencedFrameConfig	126	—	—	126
—	FetchEvent	40	44	11.1	17
—	FetchLaterResult	135	—	—	135
—	File	13	7	4	12
—	FileList	2	3	4	12
—	FileReader	6	3.6	6	12
—	FileReaderSync	7	8	6	12
—	FileSystem	7	50	11.1	≤18
—	FileSystemDirectoryEntry	8	50	11.1	79
—	FileSystemDirectoryHandle	86	111	15.2	86
—	FileSystemDirectoryReader	8	50	11.1	≤18
—	FileSystemEntry	8	50	11.1	79
—	FileSystemFileEntry	8	50	11.1	79
—	FileSystemFileHandle	86	111	15.2	86
—	FileSystemHandle	86	111	15.2	86
—	FileSystemObserver	133	—	—	133
—	FileSystemSyncAccessHandle	102	111	15.2	102
—	FileSystemWritableFileStream	86	111	26	86
—	FocusEvent	26	24	7	12
—	FontData	103	—	—	103
—	FontFace	35	41	10	79
—	FontFaceSet	35	41	10	79
—	FontFaceSetLoadEvent	35	41	—	79
—	FormData	5	4	5	12
—	FormDataEvent	77	72	15	79
—	FragmentDirective	81	131	18.4	83
—	GPU	113	141	26	113
—	GPUAdapter	113	141	26	113
—	GPUAdapterInfo	113	141	26	113
—	GPUBindGroup	113	141	26	113
—	GPUBindGroupLayout	113	141	26	113
—	GPUBuffer	113	141	26	113
—	GPUCanvasContext	113	141	26	113
—	GPUCommandBuffer	113	141	26	113
—	GPUCommandEncoder	113	141	26	113
—	GPUCompilationInfo	113	141	26	113
—	GPUCompilationMessage	113	141	26	113
—	GPUComputePassEncoder	113	141	26	113
—	GPUComputePipeline	113	141	26	113
—	GPUDevice	113	141	26	113
—	GPUDeviceLostInfo	113	141	26	113
—	GPUError	113	141	—	113
—	GPUExternalTexture	113	141	26	113
—	GPUInternalError	113	141	26	113
—	GPUOutOfMemoryError	113	141	26	113
—	GPUPipelineError	113	141	26	113
—	GPUPipelineLayout	113	141	26	113
—	GPUQuerySet	113	141	26	113
—	GPUQueue	113	141	26	113
—	GPURenderBundle	113	141	26	113
—	GPURenderBundleEncoder	113	141	26	113
—	GPURenderPassEncoder	113	141	26	113
—	GPURenderPipeline	113	141	26	113
—	GPUSampler	113	141	26	113
—	GPUShaderModule	113	141	26	113
—	GPUSupportedFeatures	113	141	26	113
—	GPUSupportedLimits	113	141	26	113
—	GPUTexture	113	141	26	113
—	GPUTextureView	113	141	26	113
—	GPUUncapturedErrorEvent	113	141	26	113
—	GPUValidationError	113	141	26	113
—	GainNode	24	25	7	12
—	Gamepad	21	29	10.1	12
—	GamepadButton	21	29	10.1	12
—	GamepadEvent	21	29	10.1	12
—	GamepadHapticActuator	68	55	16.4	15
—	GamepadPose	—	55	—	15
—	Geolocation	5	3.5	5	12
—	GeolocationCoordinates	79	72	13.1	79
—	GeolocationPosition	79	72	13.1	79
—	GeolocationPositionError	79	72	13.1	79
—	GestureEvent	—	—	9	—
—	GravitySensor	91	—	—	91
—	Gyroscope	67	—	—	79
—	HID	89	—	—	89
—	HIDConnectionEvent	89	—	—	89
—	HIDDevice	89	—	—	89
—	HIDInputReportEvent	89	—	—	89
—	HTMLAllCollection	5	32	5	12
—	HTMLAnchorElement	1	1	1	12
—	HTMLAreaElement	1	1	1	12
—	HTMLAudioElement	3	3.5	3.1	12
—	HTMLBRElement	1	1	3	12
—	HTMLBaseElement	1	1	3	12
—	HTMLBodyElement	1	1	3	12
—	HTMLButtonElement	1	1	3	12
—	HTMLCanvasElement	1	1.5	2	12
—	HTMLCollection	1	1	1	12
—	HTMLDListElement	1	1	3	12
—	HTMLDataElement	62	22	10	14
—	HTMLDataListElement	20	4	12.1	12
—	HTMLDetailsElement	10	49	6	79
—	HTMLDialogElement	37	98	15.4	79
—	HTMLDivElement	1	1	3	12
—	HTMLDocument	1	1	1	12
—	HTMLElement	1	1	1	12
—	HTMLEmbedElement	1	1	3	12
—	HTMLFencedFrameElement	126	—	—	126
—	HTMLFieldSetElement	1	1	3	12
—	HTMLFormControlsCollection	1	1	3	12
—	HTMLFormElement	1	1	3	12
—	HTMLGeolocationElement	144	—	—	144
—	HTMLHRElement	1	1	1	12
—	HTMLHeadElement	1	1	1	12
—	HTMLHeadingElement	1	1	3	12
—	HTMLHtmlElement	1	1	1	12
—	HTMLIFrameElement	1	1	3	12
—	HTMLImageElement	1	1	1	12
—	HTMLInputElement	1	1	1	12
—	HTMLLIElement	1	1	1	12
—	HTMLLabelElement	1	1	3	12
—	HTMLLegendElement	1	1	1	12
—	HTMLLinkElement	1	1	1	12
—	HTMLMapElement	1	1	3	12
—	HTMLMediaElement	3	3.5	3.1	12
—	HTMLMenuElement	1	1	3	12
—	HTMLMetaElement	1	1	1	12
—	HTMLMeterElement	6	16	6	13
—	HTMLModElement	1	1	3	12
—	HTMLOListElement	1	1	3	12
—	HTMLObjectElement	1	1	3	12
—	HTMLOptGroupElement	1	1	3	12
—	HTMLOptionElement	1	1	1.2	12
—	HTMLOptionsCollection	1	1	3	12
—	HTMLOutputElement	9	4	5.1	14
—	HTMLParagraphElement	1	1	3	12
—	HTMLPictureElement	38	38	9.1	13
—	HTMLPreElement	1	1	3	12
—	HTMLProgressElement	6	6	6	12
—	HTMLQuoteElement	1	1	3	12
—	HTMLScriptElement	1	1	3	12
—	HTMLSelectElement	1	1	1	12
—	HTMLSelectedContentElement	135	—	preview	135
—	HTMLSlotElement	53	63	10	79
—	HTMLSourceElement	3	3.5	3.1	12
—	HTMLSpanElement	15	1	6	12
—	HTMLStyleElement	1	1	1	12
—	HTMLTableCaptionElement	1	1	3	12
—	HTMLTableCellElement	1	1	3	12
—	HTMLTableColElement	1	1	3	12
—	HTMLTableElement	1	1	3	12
—	HTMLTableRowElement	1	1	3	12
—	HTMLTableSectionElement	1	1	3	12
—	HTMLTemplateElement	26	22	8	13
—	HTMLTextAreaElement	1	1	1	12
—	HTMLTimeElement	62	22	10	14
—	HTMLTitleElement	1	1	3	12
—	HTMLTrackElement	23	31	6	12
—	HTMLUListElement	1	1	3	12
—	HTMLUnknownElement	15	1	6	12
—	HTMLVideoElement	3	3.5	3.1	12
—	HashChangeEvent	8	3.6	5	12
—	Headers	42	39	10.1	14
—	Highlight	105	140	17.2	105
—	HighlightRegistry	105	140	17.2	105
—	History	1	1	1	12
—	IDBCursor	24	16	8	12
—	IDBCursorWithValue	24	16	8	12
—	IDBDatabase	24	16	8	12
—	IDBFactory	24	16	8	12
—	IDBIndex	24	16	8	12
—	IDBKeyRange	24	16	8	12
—	IDBObjectStore	24	16	8	12
—	IDBOpenDBRequest	24	16	8	12
—	IDBRecord	141	—	—	141
—	IDBRequest	24	16	8	12
—	IDBTransaction	24	16	8	12
—	IDBVersionChangeEvent	24	16	8	12
—	IIRFilterNode	49	50	14.1	14
—	IdentityCredential	108	—	—	108
—	IdentityCredentialError	120	—	—	120
—	IdentityProvider	116	—	—	116
—	IdleDeadline	47	55	—	79
—	IdleDetector	94	—	—	114
—	ImageBitmap	50	42	15	79
—	ImageBitmapRenderingContext	66	46	11.1	79
—	ImageCapture	59	35	18.4	79
—	ImageData	1	3.5	3.1	12
—	ImageDecoder	94	133	—	94
—	ImageTrack	94	133	—	94
—	ImageTrackList	94	133	—	94
—	Ink	94	—	—	93
—	InputDeviceCapabilities	47	—	—	79
—	InputDeviceInfo	47	—	11	79
—	InputEvent	60	31	10.1	79
—	InstallEvent	40	—	—	17
—	InterestEvent	142	—	—	142
—	IntersectionObserver	51	55	12.1	15
—	IntersectionObserverEntry	51	55	12.1	15
—	KHR_parallel_shader_compile	76	—	14.1	79
—	Keyboard	68	—	—	79
—	KeyboardEvent	1	1.5	1.2	12
—	KeyboardLayoutMap	69	—	—	79
—	KeyframeEffect	75	63	13.1	79
—	LanguageDetector	138	—	—	—
—	LanguageModel	148	—	—	148
—	LargestContentfulPaint	77	122	26.2	79
—	LaunchParams	102	—	—	102
—	LaunchQueue	102	—	—	102
—	LayoutShift	77	—	—	79
—	LayoutShiftAttribution	84	—	—	84
—	LinearAccelerationSensor	67	—	—	79
—	Location	1	1	1	12
—	Lock	69	96	15.4	79
—	LockManager	69	96	15.4	79
—	MIDIAccess	43	108	—	79
—	MIDIConnectionEvent	43	108	—	79
—	MIDIInput	43	108	—	79
—	MIDIInputMap	43	108	—	79
—	MIDIMessageEvent	43	108	—	79
—	MIDIOutput	43	108	—	79
—	MIDIOutputMap	43	108	—	79
—	MIDIPort	43	108	—	79
—	ML	112	—	—	112
—	MLContext	112	—	—	112
—	MLGraph	112	—	—	112
—	MLGraphBuilder	112	—	—	112
—	MLOperand	112	—	—	112
—	MLTensor	130	—	—	130
—	Magnetometer	56	—	—	79
—	ManagedMediaSource	—	—	17	—
—	ManagedSourceBuffer	—	—	17	—
—	MathMLElement	109	71	13.1	109
—	MediaCapabilities	66	63	13	79
—	MediaDeviceInfo	47	39	11	12
—	MediaDevices	47	33	11	12
—	MediaElementAudioSourceNode	15	25	6	12
—	MediaEncryptedEvent	42	38	12.1	13
—	MediaError	3	4	3.1	12
—	MediaKeyMessageEvent	42	38	12.1	13
—	MediaKeySession	42	38	12.1	13
—	MediaKeyStatusMap	42	38	12.1	13
—	MediaKeySystemAccess	42	38	12.1	13
—	MediaKeys	42	38	12.1	13
—	MediaList	1	1	1	12
—	MediaMetadata	57	82	14	79
—	MediaQueryList	9	6	5.1	12
—	MediaQueryListEvent	39	55	14	79
—	MediaRecorder	47	25	14.1	79
—	MediaSession	73	82	15	79
—	MediaSource	31	42	8	12
—	MediaSourceHandle	108	—	18	108
—	MediaStream	55	15	11	12
—	MediaStreamAudioDestinationNode	25	25	11	18
—	MediaStreamAudioSourceNode	22	25	11	12
—	MediaStreamTrack	26	22	11	12
—	MediaStreamTrackAudioSourceNode	—	68	—	—
—	MediaStreamTrackEvent	26	50	11	12
—	MediaStreamTrackGenerator	94	—	—	94
—	MediaStreamTrackProcessor	94	—	18	94
—	MessageChannel	2	41	5	12
—	MessageEvent	2	3	4	12
—	MessagePort	2	41	5	12
—	Metadata	13	—	—	79
—	MouseEvent	1	1	1	12
—	MutationObserver	26	14	7	12
—	MutationRecord	16	14	7	12
—	NDEFMessage	—	—	—	—
—	NDEFReader	—	—	—	—
—	NDEFReadingEvent	—	—	—	—
—	NDEFRecord	—	—	—	—
—	NamedNodeMap	1	34	1	12
—	NavigateEvent	102	147	26.2	102
—	Navigation	102	147	26.2	102
—	NavigationActivation	123	147	26.2	123
—	NavigationCurrentEntryChangeEvent	102	147	26.2	102
—	NavigationDestination	102	147	26.2	102
—	NavigationHistoryEntry	102	147	26.2	102
—	NavigationPrecommitController	141	147	—	141
—	NavigationPreloadManager	59	99	15.4	18
—	NavigationTransition	102	147	26.2	102
—	Navigator	1	1	1	12
—	NavigatorLogin	120	138	—	120
—	NavigatorManagedData	91	—	—	91
—	NavigatorUAData	90	—	—	90
—	NetworkInformation	61	31	—	79
—	Node	1	1	1	12
—	NodeIterator	1	3.5	3	12
—	NodeList	1	1	1	12
—	NotRestoredReasonDetails	125	—	—	125
—	NotRestoredReasons	125	—	—	125
—	Notification	20	22	7	14
—	NotificationEvent	42	44	16	17
—	OES_draw_buffers_indexed	100	108	16	100
—	OES_element_index_uint	24	24	8	12
—	OES_fbo_render_mipmap	80	71	14.1	80
—	OES_standard_derivatives	10	10	8	12
—	OES_texture_float	10	6	8	12
—	OES_texture_float_linear	29	24	8	12
—	OES_texture_half_float	27	29	8	14
—	OES_texture_half_float_linear	29	30	8	14
—	OES_vertex_array_object	24	25	8	17
—	OTPCredential	93	—	—	93
—	OVR_multiview2	93	71	—	93
—	Observable	135	—	—	135
—	OfflineAudioCompletionEvent	14	25	6	12
—	OfflineAudioContext	35	25	14.1	12
—	OffscreenCanvas	69	105	16.4	79
—	OffscreenCanvasRenderingContext2D	69	105	16.4	79
—	OrientationSensor	67	—	—	79
—	Origin	145	—	26.5	145
—	OscillatorNode	20	25	6	12
—	OverconstrainedError	63	—	11	79
—	PageRevealEvent	123	—	18.2	123
—	PageSwapEvent	124	—	18.2	124
—	PageTransitionEvent	4	1.5	5	12
—	PaintRenderingContext2D	65	—	—	79
—	PaintSize	65	—	—	79
—	PaintWorkletGlobalScope	65	—	—	79
—	PannerNode	14	25	6	12
—	PasswordCredential	51	—	—	79
—	Path2D	36	31	8	14
—	PaymentManager	70	—	—	79
—	PaymentMethodChangeEvent	76	55	12.1	79
—	PaymentRequest	60	55	11.1	15
—	PaymentRequestEvent	70	—	—	79
—	PaymentRequestUpdateEvent	60	55	11.1	15
—	PaymentResponse	60	55	11.1	15
—	Performance	6	7	8	12
—	PerformanceElementTiming	77	—	—	79
—	PerformanceEntry	46	35	11	12
—	PerformanceEventTiming	76	89	26.2	79
—	PerformanceLongAnimationFrameTiming	123	—	—	123
—	PerformanceLongTaskTiming	58	—	—	79
—	PerformanceMark	28	38	11	12
—	PerformanceMeasure	25	38	11	12
—	PerformanceNavigationTiming	57	58	15	12
—	PerformanceObserver	52	57	11	79
—	PerformanceObserverEntryList	52	57	11	79
—	PerformancePaintTiming	60	84	14.1	79
—	PerformanceResourceTiming	29	35	11	12
—	PerformanceScriptTiming	123	—	—	123
—	PerformanceServerTiming	65	61	16.4	79
—	PerformanceTimingConfidence	145	—	—	145
—	PeriodicSyncEvent	80	—	—	80
—	PeriodicSyncManager	80	—	—	80
—	PeriodicWave	30	25	8	12
—	PermissionStatus	43	46	16	79
—	Permissions	43	46	16	79
—	PictureInPictureEvent	85	—	16	85
—	PictureInPictureWindow	69	—	13.1	79
—	PointerEvent	55	59	13	12
—	PopStateEvent	4	4	6	12
—	PreferenceManager	preview	—	—	—
—	PreferenceObject	preview	—	—	—
—	Presentation	47	—	—	79
—	PresentationAvailability	47	—	—	79
—	PresentationConnection	47	—	—	79
—	PresentationConnectionAvailableEvent	47	—	—	79
—	PresentationConnectionCloseEvent	50	—	—	79
—	PresentationConnectionList	59	—	—	79
—	PresentationReceiver	59	—	—	79
—	PresentationRequest	47	—	—	79
—	PressureObserver	125	—	—	125
—	PressureRecord	125	—	—	125
—	ProcessingInstruction	1	1	1	12
—	Profiler	94	—	—	94
—	ProgressEvent	1	3.5	3.1	12
—	PromiseRejectionEvent	49	69	11	79
—	PublicKeyCredential	67	60	13	18
—	PushEvent	42	44	16	17
—	PushManager	42	44	16	17
—	PushMessageData	50	44	16	17
—	PushSubscription	42	44	16	17
—	PushSubscriptionChangeEvent	138	137	16	17
—	PushSubscriptionOptions	54	44	16	17
—	QuotaExceededError	138	—	—	138
—	RTCCertificate	49	42	12.1	79
—	RTCDTMFSender	27	52	13.1	79
—	RTCDTMFToneChangeEvent	27	52	13.1	12
—	RTCDataChannel	24	22	11	79
—	RTCDataChannelEvent	24	22	11	79
—	RTCDtlsTransport	72	82	15.4	12
—	RTCEncodedAudioFrame	86	117	15.4	86
—	RTCEncodedVideoFrame	86	117	15.4	86
—	RTCError	74	150	15.4	79
—	RTCErrorEvent	74	150	15.4	79
—	RTCIceCandidate	23	44	11	15
—	RTCIceTransport	75	125	11	13
—	RTCIdentityAssertion	—	40	—	—
—	RTCPeerConnection	56	44	11	15
—	RTCPeerConnectionIceErrorEvent	77	150	14.1	79
—	RTCPeerConnectionIceEvent	56	24	12	15
—	RTCRtpReceiver	59	34	11	12
—	RTCRtpScriptTransform	141	117	15.4	141
—	RTCRtpScriptTransformer	141	117	15.4	141
—	RTCRtpSender	64	34	11	13
—	RTCRtpTransceiver	69	59	11	≤18
—	RTCSctpTransport	76	113	15.4	79
—	RTCSessionDescription	23	44	11	15
—	RTCStatsReport	58	27	11	79
—	RTCTrackEvent	56	22	11	79
—	RTCTransformEvent	141	117	15.4	141
—	RadioNodeList	21	33	7	12
—	Range	1	1	1	12
—	ReadableByteStreamController	89	102	26.4	89
—	ReadableStream	43	65	10.1	14
—	ReadableStreamBYOBReader	89	102	26.4	89
—	ReadableStreamBYOBRequest	89	102	26.4	89
—	ReadableStreamDefaultController	52	65	10	79
—	ReadableStreamDefaultReader	43	65	10	79
—	RelativeOrientationSensor	67	—	—	79
—	RemotePlayback	121	—	13.1	121
—	ReportingObserver	69	149	16.4	79
—	Request	42	39	10.1	14
—	ResizeObserver	64	69	13.1	79
—	ResizeObserverEntry	64	69	13.1	79
—	ResizeObserverSize	84	69	15.4	84
—	Response	42	39	10.1	14
—	RestrictionTarget	132	—	—	132
—	SVGAElement	1	3	3	12
—	SVGAngle	1	1.5	3	12
—	SVGAnimateElement	2	4	3	79
—	SVGAnimateMotionElement	19	4	6	79
—	SVGAnimateTransformElement	2	4	3	79
—	SVGAnimatedAngle	1	1.5	3	12
—	SVGAnimatedBoolean	6	3	5	12
—	SVGAnimatedEnumeration	1	1.5	3	12
—	SVGAnimatedInteger	6	3	5	12
—	SVGAnimatedLength	1	1.5	3	12
—	SVGAnimatedLengthList	1	1.5	3	12
—	SVGAnimatedNumber	1	1.5	3	12
—	SVGAnimatedNumberList	6	1.5	5	12
—	SVGAnimatedPreserveAspectRatio	5	1.5	5	12
—	SVGAnimatedRect	1	1.5	3	12
—	SVGAnimatedString	1	1.5	3	12
—	SVGAnimatedTransformList	1	1.5	3	12
—	SVGAnimationElement	2	4	3	79
—	SVGCircleElement	1	1.5	3	12
—	SVGClipPathElement	1	1.5	3	12
—	SVGComponentTransferFunctionElement	5	3	6	12
—	SVGDefsElement	1	1.5	3	12
—	SVGDescElement	1	1.5	3	12
—	SVGElement	1	1.5	3	12
—	SVGEllipseElement	1	1.5	3	12
—	SVGFEBlendElement	5	3	6	12
—	SVGFEColorMatrixElement	5	3	6	12
—	SVGFEComponentTransferElement	5	3	6	12
—	SVGFECompositeElement	5	3	6	12
—	SVGFEConvolveMatrixElement	6	3	6	12
—	SVGFEDiffuseLightingElement	5	3	6	12
—	SVGFEDisplacementMapElement	5	3	6	12
—	SVGFEDistantLightElement	5	3	6	12
—	SVGFEDropShadowElement	13	30	6	79
—	SVGFEFloodElement	5	3	6	12
—	SVGFEFuncAElement	5	3	6	12
—	SVGFEFuncBElement	5	3	6	12
—	SVGFEFuncGElement	5	3	6	12
—	SVGFEFuncRElement	5	3	6	12
—	SVGFEGaussianBlurElement	5	3	6	12
—	SVGFEImageElement	5	3	6	12
—	SVGFEMergeElement	5	3	6	12
—	SVGFEMergeNodeElement	5	3	6	12
—	SVGFEMorphologyElement	5	3	6	12
—	SVGFEOffsetElement	5	3	6	12
—	SVGFEPointLightElement	5	3	6	12
—	SVGFESpecularLightingElement	5	3	6	12
—	SVGFESpotLightElement	5	3	6	12
—	SVGFETileElement	5	3	6	12
—	SVGFETurbulenceElement	5	3	6	12
—	SVGFilterElement	5	3	6	12
—	SVGForeignObjectElement	1	3	3	12
—	SVGGElement	1	1.5	3	12
—	SVGGeometryElement	56	53	12	79
—	SVGGradientElement	1	1.5	3	12
—	SVGGraphicsElement	30	20	7	12
—	SVGImageElement	1	1.5	3	12
—	SVGLength	1	1.5	3	12
—	SVGLengthList	1	1.5	3	12
—	SVGLineElement	1	1.5	3	12
—	SVGLinearGradientElement	1	1.5	3	12
—	SVGMPathElement	19	4	6	79
—	SVGMarkerElement	1	1.5	3	12
—	SVGMaskElement	1	3	3	12
—	SVGMetadataElement	1	1.5	3	12
—	SVGNumber	1	1.5	3	12
—	SVGNumberList	6	1.5	5	12
—	SVGPathElement	1	1.5	3	12
—	SVGPatternElement	1	3	3	12
—	SVGPointList	1	1.5	3	12
—	SVGPolygonElement	1	1.5	3	12
—	SVGPolylineElement	1	1.5	3	12
—	SVGPreserveAspectRatio	1	1.5	3	12
—	SVGRadialGradientElement	1	1.5	3	12
—	SVGRect	1	1.5	3	12
—	SVGRectElement	1	1.5	3	12
—	SVGSVGElement	1	1.5	3	12
—	SVGScriptElement	1	1.5	3	12
—	SVGSetElement	2	4	3	79
—	SVGStopElement	1	1.5	3	12
—	SVGStringList	1	12	3	12
—	SVGStyleElement	1	1.5	3	12
—	SVGSwitchElement	1	3	3	12
—	SVGSymbolElement	1	1.5	3	12
—	SVGTSpanElement	1	1.5	3	12
—	SVGTextContentElement	1	1.5	3	12
—	SVGTextElement	1	1.5	3	12
—	SVGTextPathElement	1	2	3.1	12
—	SVGTextPositioningElement	1	1.5	3	12
—	SVGTitleElement	1	1.5	3	12
—	SVGTransform	1	1.5	4	12
—	SVGTransformList	1	1.5	3	12
—	SVGUnitTypes	1	3	3.1	12
—	SVGUseElement	1	1.5	3	12
—	SVGViewElement	1	15	3	12
—	Sanitizer	146	148	—	146
—	Scheduler	94	142	—	94
—	Scheduling	87	—	—	87
—	Screen	1	1	1	12
—	ScreenDetailed	100	—	—	100
—	ScreenDetails	100	—	—	100
—	ScreenOrientation	38	43	16.4	79
—	ScrollTimeline	115	—	26	115
—	SecurityPolicyViolationEvent	41	63	10	15
—	Selection	1	1	1.3	12
—	Sensor	67	—	—	79
—	SensorErrorEvent	67	—	—	79
—	Serial	89	151	—	89
—	SerialPort	89	151	—	89
—	ServiceWorker	40	44	11.1	17
—	ServiceWorkerContainer	40	44	11.1	17
—	ServiceWorkerGlobalScope	40	44	11.1	17
—	ServiceWorkerRegistration	40	44	11.1	17
—	ShadowRoot	53	63	10	79
—	SharedWorker	5	29	16	79
—	SharedWorkerGlobalScope	4	29	16	79
—	SnapEvent	129	—	—	129
—	SourceBuffer	31	42	8	12
—	SourceBufferList	31	42	8	12
—	SpeechRecognition	139	142	14.1	139
—	SpeechRecognitionAlternative	33	—	14.1	79
—	SpeechRecognitionErrorEvent	139	—	14.1	139
—	SpeechRecognitionEvent	139	—	14.1	139
—	SpeechRecognitionPhrase	142	—	—	142
—	SpeechRecognitionResult	33	—	14.1	79
—	SpeechRecognitionResultList	33	—	14.1	79
—	SpeechSynthesis	33	49	7	14
—	SpeechSynthesisErrorEvent	33	49	7	≤18
—	SpeechSynthesisEvent	33	49	7	14
—	SpeechSynthesisUtterance	33	49	7	14
—	SpeechSynthesisVoice	33	49	7	14
—	StaticRange	60	69	10.1	18
—	StereoPannerNode	41	37	14.1	12
—	Storage	4	3.5	4	12
—	StorageAccessHandle	125	—	—	—
—	StorageBucket	122	—	—	122
—	StorageBucketManager	122	—	—	122
—	StorageEvent	1	13	4	12
—	StorageManager	55	57	15.2	79
—	StylePropertyMap	66	—	16.4	79
—	StylePropertyMapReadOnly	66	—	16.4	79
—	StyleSheet	1	1	1	12
—	StyleSheetList	1	1	1	12
—	SubmitEvent	81	75	15	81
—	Subscriber	135	—	—	135
—	SubtleCrypto	37	34	11	12
—	Summarizer	138	—	—	138
—	SyncEvent	49	—	—	79
—	SyncManager	49	—	—	79
—	TaskAttributionTiming	58	—	—	79
—	TaskController	94	142	—	94
—	TaskPriorityChangeEvent	94	142	—	94
—	TaskSignal	94	142	—	94
—	Text	1	1	1	12
—	TextDecoder	38	19	10.1	79
—	TextDecoderStream	71	105	14.1	79
—	TextEncoder	38	18	10.1	79
—	TextEncoderStream	71	105	14.1	79
—	TextFormat	121	—	—	121
—	TextFormatUpdateEvent	121	—	—	121
—	TextMetrics	2	1.5	4	12
—	TextTrack	23	31	6	12
—	TextTrackCue	23	31	6	12
—	TextTrackCueList	23	31	6	12
—	TextTrackList	23	31	6	12
—	TextUpdateEvent	121	—	—	121
—	TimeEvent	—	4	—	—
—	TimeRanges	6	4	3.1	12
—	ToggleEvent	114	120	17	114
—	Touch	22	52	—	≤18
—	TouchEvent	22	52	—	79
—	TouchList	18	52	—	≤18
—	TrackEvent	23	27	6	12
—	TransformStream	67	102	14.1	79
—	TransformStreamDefaultController	67	102	14.1	79
—	TransitionEvent	27	4	7	12
—	Translator	138	—	—	—
—	TreeWalker	1	4	3	12
—	TrustedHTML	83	148	26	83
—	TrustedScript	83	148	26	83
—	TrustedScriptURL	83	148	26	83
—	TrustedTypePolicy	83	148	26	83
—	TrustedTypePolicyFactory	83	148	26	83
—	UIEvent	1	1	1	12
—	URL	32	19	7	12
—	URLPattern	95	142	26	95
—	URLSearchParams	49	29	10.1	17
—	USB	61	—	—	79
—	USBAlternateInterface	61	—	—	79
—	USBConfiguration	61	—	—	79
—	USBConnectionEvent	61	—	—	79
—	USBDevice	61	—	—	79
—	USBEndpoint	61	—	—	79
—	USBInTransferResult	61	—	—	79
—	USBInterface	61	—	—	79
—	USBIsochronousInTransferPacket	61	—	—	79
—	USBIsochronousInTransferResult	61	—	—	79
—	USBIsochronousOutTransferPacket	61	—	—	79
—	USBIsochronousOutTransferResult	61	—	—	79
—	USBOutTransferResult	61	—	—	79
—	UserActivation	72	120	16.4	79
—	VTTCue	23	31	6	12
—	VTTRegion	—	59	7	—
—	ValidityState	4	4	5	12
—	VideoColorSpace	94	130	15.4	94
—	VideoDecoder	94	130	16.4	94
—	VideoEncoder	94	130	16.4	94
—	VideoFrame	94	130	16.4	94
—	VideoPlaybackQuality	23	42	8	12
—	VideoTrack	37	33	7	79
—	VideoTrackGenerator	—	—	18	—
—	VideoTrackList	37	33	7	79
—	ViewTimeline	115	—	26	115
—	ViewTransition	111	144	18	111
—	ViewTransitionTypeSet	125	147	18.2	125
—	Viewport	138	—	—	138
—	VirtualKeyboard	94	—	—	94
—	VisibilityStateEntry	115	—	—	115
—	VisualViewport	61	91	13	79
—	WEBGL_color_buffer_float	63	30	14	17
—	WEBGL_compressed_texture_astc	47	53	12	79
—	WEBGL_compressed_texture_etc	63	—	13.1	79
—	WEBGL_compressed_texture_etc1	49	—	13.1	79
—	WEBGL_compressed_texture_pvrtc	124	—	7	124
—	WEBGL_compressed_texture_s3tc	26	22	8	12
—	WEBGL_compressed_texture_s3tc_srgb	60	55	14.1	80
—	WEBGL_debug_renderer_info	33	53	9.1	12
—	WEBGL_debug_shaders	47	56	14	79
—	WEBGL_depth_texture	26	22	8	12
—	WEBGL_draw_buffers	36	28	9	17
—	WEBGL_lose_context	26	22	8	17
—	WEBGL_multi_draw	86	—	15	86
—	WGSLLanguageFeatures	115	141	26	115
—	WakeLock	84	126	16.4	84
—	WakeLockSentinel	84	126	16.4	84
—	WaveShaperNode	15	25	6	12
—	WebGL2RenderingContext	56	51	15	79
—	WebGLActiveInfo	10	4	5.1	12
—	WebGLBuffer	10	4	5.1	12
—	WebGLContextEvent	9	49	5.1	12
—	WebGLFramebuffer	10	4	5.1	12
—	WebGLObject	126	—	—	126
—	WebGLProgram	10	4	5.1	12
—	WebGLQuery	56	51	15	79
—	WebGLRenderbuffer	10	4	5.1	12
—	WebGLRenderingContext	9	4	5.1	12
—	WebGLSampler	56	51	15	79
—	WebGLShader	10	4	5.1	12
—	WebGLShaderPrecisionFormat	9	4	5.1	12
—	WebGLSync	56	51	15	79
—	WebGLTexture	10	4	5.1	12
—	WebGLTimerQueryEXT	70	51	—	79
—	WebGLTransformFeedback	56	51	15	79
—	WebGLUniformLocation	10	4	5.1	12
—	WebGLVertexArrayObject	56	51	15	79
—	WebGLVertexArrayObjectOES	24	25	5.1	17
—	WebSocket	5	11	5	12
—	WebSocketError	124	—	—	124
—	WebSocketStream	124	—	—	124
—	WebTransport	97	114	26.4	97
—	WebTransportBidirectionalStream	97	114	26.4	97
—	WebTransportDatagramDuplexStream	97	114	26.4	97
—	WebTransportDatagramsWritable	—	—	26.4	—
—	WebTransportError	97	114	26.4	97
—	WebTransportReceiveStream	—	114	26.4	—
—	WebTransportSendGroup	—	—	26.4	—
—	WebTransportSendStream	—	114	26.4	—
—	WheelEvent	1	17	3	12
—	Window	1	1	1	12
—	WindowClient	42	44	11.1	17
—	WindowControlsOverlay	105	—	—	105
—	WindowControlsOverlayGeometryChangeEvent	105	—	—	105
—	Worker	2	3.5	4	12
—	WorkerGlobalScope	4	3.5	4	12
—	WorkerLocation	4	3.5	4	12
—	WorkerNavigator	4	3.5	4	12
—	Worklet	65	76	14.1	79
—	WorkletGlobalScope	65	76	14.1	79
—	WritableStream	59	100	14.1	16
—	WritableStreamDefaultController	59	100	14.1	16
—	WritableStreamDefaultWriter	59	100	14.1	16
—	XMLDocument	34	1	10	12
—	XMLHttpRequest	1	1	1.2	12
—	XMLHttpRequestEventTarget	1	1	1	12
—	XMLHttpRequestUpload	2	3.5	4	12
—	XMLSerializer	1	1	3	12
—	XPathEvaluator	1	1	3	12
—	XPathExpression	1	1	3	12
—	XPathResult	1	1	3	12
—	XRAnchor	85	—	—	85
—	XRAnchorSet	85	—	—	85
—	XRBoundedReferenceSpace	79	—	—	79
—	XRCPUDepthInformation	90	—	—	90
—	XRCamera	107	—	—	107
—	XRCompositionLayer	147	—	—	147
—	XRCubeLayer	147	—	—	147
—	XRCylinderLayer	147	—	—	147
—	XRDepthInformation	90	—	—	90
—	XREquirectLayer	147	—	—	147
—	XRFrame	79	—	—	79
—	XRHand	131	—	—	93
—	XRHitTestResult	81	—	—	81
—	XRHitTestSource	81	—	—	81
—	XRInputSource	79	—	—	79
—	XRInputSourceArray	79	—	—	79
—	XRInputSourceEvent	79	—	—	79
—	XRInputSourcesChangeEvent	79	—	—	79
—	XRJointPose	131	—	—	93
—	XRJointSpace	131	—	—	93
—	XRLayer	84	—	—	84
—	XRLayerEvent	147	—	—	147
—	XRLightEstimate	90	—	—	90
—	XRLightProbe	90	—	—	90
—	XRMediaBinding	—	—	—	—
—	XRPlane	147	—	—	147
—	XRPlaneSet	147	—	—	147
—	XRPose	79	—	—	79
—	XRProjectionLayer	147	—	—	147
—	XRQuadLayer	147	—	—	147
—	XRRay	81	—	—	81
—	XRReferenceSpace	79	—	—	79
—	XRReferenceSpaceEvent	79	—	—	79
—	XRRenderState	79	—	—	79
—	XRRigidTransform	79	—	—	79
—	XRSession	79	—	—	79
—	XRSessionEvent	79	—	—	79
—	XRSpace	79	—	—	79
—	XRSubImage	147	—	—	147
—	XRSystem	79	—	—	79
—	XRTransientInputHitTestResult	81	—	—	81
—	XRTransientInputHitTestSource	81	—	—	81
—	XRView	79	—	—	79
—	XRViewerPose	79	—	—	79
—	XRViewport	79	—	—	79
—	XRVisibilityMaskChangeEvent	144	—	—	144
—	XRWebGLBinding	89	—	—	89
—	XRWebGLDepthInformation	90	—	—	90
—	XRWebGLLayer	79	—	—	79
—	XRWebGLSubImage	147	—	—	147
—	XSLTProcessor	1	1	3.1	12
—	atob	4	1	3	12
—	btoa	4	1	3	12
—	caches	40	41	11.1	16
—	clearInterval	1	1	1	12
—	clearTimeout	1	1	4	12
—	console	1	4	3	12
—	createImageBitmap	50	42	15	79
—	crossOriginIsolated	87	72	15.2	87
—	crypto	37	1	5	12
—	fetch	42	39	10.1	14
—	indexedDB	24	16	8	12
—	isSecureContext	47	49	11.1	15
—	origin	59	54	11	18
—	performance	6	7	8	12
—	queueMicrotask	71	69	12.1	79
—	reportError	95	93	15.4	95
—	scheduler	94	142	—	94
—	setInterval	1	1	1	12
—	setTimeout	1	1	1	12
—	structuredClone	98	94	15.4	98
—	trustedTypes	83	148	26	83

1019 rows

Readme

What is the Web API?

The Web API (or Browser API) is a collection of interfaces built into modern web browsers that allow JavaScript to interact with browser features, hardware, and the operating system. Examples include the Fetch API for network requests, the Geolocation API for GPS coordinates, WebGL for 3D graphics, the Clipboard API for copy/paste, and hundreds of others. Each API is defined by web standards bodies such as the W3C and WHATWG, and browser vendors implement them at their own pace.

Because browser support varies widely — some APIs are universally supported, others are experimental or vendor-specific — developers often need to check which APIs are actually available in a given browser before using them. Feature detection (checking whether an API exists on window before calling it) is the standard approach.

Tool description

This tool tests which Web APIs are available in your current browser in real time. It combines live browser detection with browser compatibility data from MDN to give you a comprehensive view of which APIs are supported, which version they became available in, and whether any are still experimental.

Features

Live detection: Tests each API against your actual browser's window object and reports supported, unsupported, or unknown status instantly
MDN compatibility data: Shows the minimum version of Chrome, Firefox, Safari, and Edge that supports each API, sourced from the official @mdn/browser-compat-data package
Experimental API flagging: Clearly marks APIs that are still experimental or behind feature flags
Custom expression tester: Enter any JavaScript expression to evaluate it live in your browser and see the result or error
Filtering and search: Filter by support status (supported/unsupported/unknown) and search by API name to find what you need quickly

How it works

The tool loads a list of Web API entries from the MDN Browser Compat Data package at build time. When you open the page, it evaluates each API name as a property of the global window object — if the property exists and is non-null, the API is marked as supported. The MDN version data is pre-loaded and displayed alongside the live detection result.

Tips

Use the status filter to show only APIs supported in your browser — useful for auditing what's available before writing code.
Use the custom expression field to test more complex feature checks, such as typeof navigator.bluetooth !== 'undefined' or 'serviceWorker' in navigator.
Experimental APIs may be available in some browser builds but not in stable releases — always check the MDN documentation before relying on them in production.

Tool info

Created

May 23, 2026

Last updated

May 23, 2026

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The tools provided on this website are designed to assist users in solving various problems. While we strive to ensure that the tools are accurate and effective, we do not guarantee or warrant that the output of any tool will be 100% accurate or error-free. The results generated by these tools are provided as-is and should be used with caution. We recommend that users verify any important information or results with additional resources or professional advice, as we cannot be held responsible for any consequences arising from the use of these tools. By using this website, you agree to assume all risks associated with the accuracy and use of the results provided.