WhiskerJS browser support matrix: 46 signals in 9 browsers

In plain words

Not every browser offers every measurement. Some lack the API, some randomise it on purpose, and some only offer it in certain modes. This table shows, for each of the 46 WhiskerJS signals, what to expect in nine browser families. It is filled from the library’s code and documentation plus one small early lab sample, so treat it as expectations, not measurements.

How to read it

ok: the value is read. none: read, but here the plain value is none (for example no Apple Pay outside Safari). unavailable: the browser does not offer the API, or WhiskerJS skips it here on purpose. excluded: the exclusion table removes it for this browser class. varies: depends on version, settings, a private window, an extension or the device.
Cells marked lab were seen in the early lab sample (signalsVersion 1, four device and browser pairs, not a benchmark). Every other cell is expected behaviour from the code and documentation, not yet measured.
In any browser a component can also be noisy, blocked or timed_out on a given run; see Statuses and reason codes.

Where the data comes from

The page is rendered from one file in the site repository, data/support-matrix.json. It holds the browser list, one row per component and one cell per browser (status, basis and a short note). It will be refreshed from aggregated diagnostics once those exist; updating that file updates this page and the table at the end of every browser page, with no code change.

The matrix

46 components by 9 browser families, signalsVersion 5, updated 2026-10-26. Scroll sideways on a small screen. Notes for individual cells follow the table.

Component	Group	Chrome (desktop)	Chrome on Android	Safari on macOS	Safari and every iOS browser	Firefox	Firefox resistFingerprinting and Tor Browser	Brave	Microsoft Edge	Samsung Internet
`apple_pay`	browser	none *	none *	ok *	varies *	none *	none *	none *	none *	none *
`audio`	audio	ok	ok	ok *	ok *	ok	ok	excluded *	ok	ok
`audio_latency`	outside the ids	unavailable *	ok *	ok *	ok *	varies *	varies *	varies *	unavailable *	ok *
`browser_class`	browser	ok *	ok *	ok *	ok *	ok *	ok *	ok *	ok *	ok *
`canvas`	gpu	ok *	ok *	varies *	varies *	ok *	excluded *	excluded *	ok *	ok *
`canvas_readback`	outside the ids	ok *	ok	varies *	varies *	ok	varies *	varies *	ok	ok
`color_depth`	device	ok	ok	ok	ok	ok	ok	ok	ok	ok
`color_gamut`	prefs	ok	ok	ok	ok	ok	ok	ok	ok	ok
`content_blockers`	outside the ids	ok *	ok *	ok *	ok *	ok *	ok *	ok *	ok *	ok *
`cpu_architecture`	device	ok	ok	ok	ok	ok	ok	ok	ok	ok
`device_memory`	device	ok (lab) *	ok	unavailable (lab) *	unavailable (lab) *	unavailable *	unavailable *	varies *	ok	ok
`dynamic_range`	prefs	ok	ok	ok	ok	ok	ok	ok	ok	ok
`font_preferences`	fonts	ok	ok	ok	ok	ok	ok	ok	ok	ok
`fonts`	fonts	ok	ok	ok	ok	ok	ok *	excluded *	ok	ok
`fonts_canvas`	fonts	ok	ok	ok	ok	ok	ok *	excluded *	ok	ok
`forced_colors`	prefs	ok	ok	ok	ok	ok	ok	ok	ok	ok
`hardware_concurrency`	device	ok *	ok *	ok *	ok *	ok *	excluded *	excluded *	ok *	ok *
`heap_limit`	device	ok	ok	unavailable *	unavailable *	unavailable *	unavailable *	ok	ok	ok
`intl_locale`	locale	ok	ok	ok	ok	ok	ok	ok	ok	ok
`keyboard_layout`	outside the ids	ok *	varies *	unavailable *	unavailable *	unavailable *	unavailable *	varies *	ok *	varies *
`languages`	locale	ok	ok	ok	ok	ok	ok *	ok	ok	ok
`math`	browser	ok	ok	ok	ok	ok	ok	ok	ok	ok
`media_codecs`	browser	ok	ok	ok	ok	ok	ok	ok	ok	ok
`pdf_viewer`	browser	ok	ok	ok	varies *	ok	ok	ok	ok	ok
`permissions`	outside the ids	ok	ok	ok	ok	ok	ok	ok	ok	ok
`pixel_ratio`	outside the ids	ok	ok	ok	ok	ok	excluded *	ok	ok	ok
`platform`	browser	ok	ok	ok	ok	ok	ok	ok	ok	ok
`plugins`	browser	ok	varies *	ok	varies *	ok	ok	excluded *	ok	varies *
`prefers_contrast`	prefs	ok	ok	ok	ok	ok	ok	ok	ok	ok
`private_click`	browser	none *	none *	ok *	varies *	none *	none *	none *	none *	none *
`reduced_motion`	prefs	ok	ok	ok	ok	ok	ok	ok	ok	ok
`screen_frame`	outside the ids	ok	ok	ok	ok	ok	excluded *	ok	ok	ok
`screen_resolution`	device	ok	ok	ok	ok	ok	excluded *	ok	ok	ok
`speech_voices`	outside the ids	ok *	ok *	ok *	ok *	ok *	varies *	ok *	ok *	ok *
`storage`	browser	ok	ok	ok	ok	ok	ok	ok	ok	ok
`time_zone`	locale	ok	ok	ok	ok	ok	excluded *	ok	ok	ok
`touch_support`	device	ok	ok	ok	ok	ok	ok	ok	ok	ok
`ua_client_hints`	browser	ok *	ok *	unavailable *	unavailable *	unavailable *	unavailable *	ok *	ok *	ok *
`ua_versions`	outside the ids	ok	ok	unavailable *	unavailable *	unavailable *	unavailable *	ok *	ok	ok
`vendor`	browser	ok	ok	ok	ok	ok	ok	ok	ok	ok
`vendor_flavors`	browser	ok	ok	ok	ok	ok	ok	ok	ok	ok
`webgl_image`	gpu	ok *	ok *	varies *	varies *	ok *	excluded *	excluded *	ok *	ok *
`webgl_params`	gpu	ok *	ok *	ok *	ok *	ok *	ok *	ok *	ok *	ok *
`webgl_renderer`	gpu	ok	ok	ok *	ok *	ok *	excluded *	ok	ok	ok
`webgl_vendor`	gpu	ok	ok	ok	ok	ok *	excluded *	ok	ok	ok
`webgpu`	gpu	varies *	varies *	varies *	varies *	varies *	varies *	varies *	varies *	varies *

Filled on 2026-10-26 from the WhiskerJS code and documentation at signalsVersion 5 (expected behaviour) and from the early lab sample at signalsVersion 1 (four device-browser pairs). It is not a measurement. It will be refreshed from aggregated diagnostics once those exist; this file is the only place to change.

Notes on individual cells

Every cell marked with * above, by component.

Component	Browser	Status	Note
`apple_pay`	Chrome (desktop)	none	No ApplePaySession: reports the plain value none.
`apple_pay`	Chrome on Android	none	No ApplePaySession: reports the plain value none.
`apple_pay`	Safari on macOS	ok	version=<n>;can_pay=<1, 0 or blocked>; can_pay is blocked in insecure or cross-origin contexts.
`apple_pay`	Safari and every iOS browser	varies	Safari has ApplePaySession; in other iOS browsers it depends on the app. none where it is missing.
`apple_pay`	Firefox	none	No ApplePaySession: reports the plain value none.
`apple_pay`	Firefox resistFingerprinting and Tor Browser	none	No ApplePaySession: reports the plain value none.
`apple_pay`	Brave	none	No ApplePaySession: reports the plain value none.
`apple_pay`	Microsoft Edge	none	No ApplePaySession: reports the plain value none.
`apple_pay`	Samsung Internet	none	No ApplePaySession: reports the plain value none.
`audio`	Safari on macOS	ok	No double render for audio: noise added to audio reads would change the digest each run.
`audio`	Safari and every iOS browser	ok	No double render for audio: noise added to audio reads would change the digest each run.
`audio`	Brave	excluded	Exclusion table: brave_farbling (Brave adds per-site, per-session noise).
`audio_latency`	Chrome (desktop)	unavailable	Skipped (unavailable / skipped): creating an AudioContext here would print a console warning.
`audio_latency`	Chrome on Android	ok	Read when the user agent says Android.
`audio_latency`	Safari on macOS	ok	Read for browser class safari; the context is closed at once.
`audio_latency`	Safari and every iOS browser	ok	Read for browser class safari; the context is closed at once.
`audio_latency`	Firefox	varies	Skipped on desktop; Firefox for Android has an Android user agent, so it is read there.
`audio_latency`	Firefox resistFingerprinting and Tor Browser	varies	Skipped on desktop; read only with an Android user agent.
`audio_latency`	Brave	varies	Read on Android (Android user agent), skipped on desktop.
`audio_latency`	Microsoft Edge	unavailable	Skipped (unavailable / skipped): creating an AudioContext here would print a console warning.
`audio_latency`	Samsung Internet	ok	Read when the user agent says Android.
`browser_class`	Chrome (desktop)	ok	Class chromium.
`browser_class`	Chrome on Android	ok	Class chromium.
`browser_class`	Safari on macOS	ok	Class safari.
`browser_class`	Safari and every iOS browser	ok	Class safari, for every iOS browser (Apple vendor, no Chrome/ token).
`browser_class`	Firefox	ok	Class firefox.
`browser_class`	Firefox resistFingerprinting and Tor Browser	ok	Class firefox_rfp only when every resistFingerprinting trait holds; otherwise firefox.
`browser_class`	Brave	ok	Class brave (navigator.brave.isBrave is a function).
`browser_class`	Microsoft Edge	ok	Class chromium.
`browser_class`	Samsung Internet	ok	Class chromium.
`canvas`	Chrome (desktop)	ok	noisy / render_mismatch if an extension or setting adds noise to readback.
`canvas`	Chrome on Android	ok	noisy / render_mismatch if an extension or setting adds noise to readback.
`canvas`	Safari on macOS	varies	Apple describes fingerprinting protections that can add noise to readback in some modes (for example private browsing); WhiskerJS reports noisy / render_mismatch when the double render differs.
`canvas`	Safari and every iOS browser	varies	Apple describes fingerprinting protections that can add noise to readback in some modes (for example private browsing); WhiskerJS reports noisy / render_mismatch when the double render differs.
`canvas`	Firefox	ok	noisy / render_mismatch if an extension or setting adds noise to readback.
`canvas`	Firefox resistFingerprinting and Tor Browser	excluded	Exclusion table: firefox_rfp (fixed or normalised values).
`canvas`	Brave	excluded	Exclusion table: brave_farbling (Brave adds per-site, per-session noise).
`canvas`	Microsoft Edge	ok	noisy / render_mismatch if an extension or setting adds noise to readback.
`canvas`	Samsung Internet	ok	noisy / render_mismatch if an extension or setting adds noise to readback.
`canvas_readback`	Chrome (desktop)	ok	exact, or altered when an extension adds noise.
`canvas_readback`	Safari on macOS	varies	exact, or altered where readback noise is applied.
`canvas_readback`	Safari and every iOS browser	varies	exact, or altered where readback noise is applied.
`canvas_readback`	Firefox resistFingerprinting and Tor Browser	varies	resistFingerprinting changes canvas readback, so altered is likely.
`canvas_readback`	Brave	varies	Not excluded; Brave's canvas farbling can make it report altered.
`content_blockers`	Chrome (desktop)	ok	none, or the bait names a content blocker hid.
`content_blockers`	Chrome on Android	ok	none, or the bait names a content blocker hid.
`content_blockers`	Safari on macOS	ok	none, or the bait names a content blocker hid.
`content_blockers`	Safari and every iOS browser	ok	none, or the bait names a content blocker hid.
`content_blockers`	Firefox	ok	none, or the bait names a content blocker hid.
`content_blockers`	Firefox resistFingerprinting and Tor Browser	ok	none, or the bait names a content blocker hid.
`content_blockers`	Brave	ok	Brave's built-in blocking may hide some baits; reports the hidden bait names or none.
`content_blockers`	Microsoft Edge	ok	none, or the bait names a content blocker hid.
`content_blockers`	Samsung Internet	ok	none, or the bait names a content blocker hid.
`device_memory`	Chrome (desktop)	ok (lab)	Seen ok on Mac Chrome in the lab sample.
`device_memory`	Safari on macOS	unavailable (lab)	Seen unavailable on Mac Safari in the lab sample; Safari does not offer navigator.deviceMemory.
`device_memory`	Safari and every iOS browser	unavailable (lab)	Seen unavailable on iPhone Safari and iPhone Chrome in the lab sample; no iOS browser offers it.
`device_memory`	Firefox	unavailable	navigator.deviceMemory is a Chromium API. Reports unavailable / no_api.
`device_memory`	Firefox resistFingerprinting and Tor Browser	unavailable	navigator.deviceMemory is a Chromium API. Reports unavailable / no_api.
`device_memory`	Brave	varies	Chromium API; Brave's fingerprinting protections may change the value.
`fonts`	Firefox resistFingerprinting and Tor Browser	ok	Tor Browser limits fonts to a bundled set, so values are alike across its users.
`fonts`	Brave	excluded	Exclusion table: brave_farbling (Brave adds per-site, per-session noise).
`fonts_canvas`	Firefox resistFingerprinting and Tor Browser	ok	Tor Browser limits fonts to a bundled set, so values are alike across its users.
`fonts_canvas`	Brave	excluded	Exclusion table: brave_farbling (Brave adds per-site, per-session noise).
`hardware_concurrency`	Chrome (desktop)	ok	Some browsers cap or round the value.
`hardware_concurrency`	Chrome on Android	ok	Some browsers cap or round the value.
`hardware_concurrency`	Safari on macOS	ok	Some browsers cap or round the value.
`hardware_concurrency`	Safari and every iOS browser	ok	Some browsers cap or round the value.
`hardware_concurrency`	Firefox	ok	Some browsers cap or round the value.
`hardware_concurrency`	Firefox resistFingerprinting and Tor Browser	excluded	Exclusion table: firefox_rfp (fixed or normalised values).
`hardware_concurrency`	Brave	excluded	Exclusion table: brave_farbling (Brave adds per-site, per-session noise).
`hardware_concurrency`	Microsoft Edge	ok	Some browsers cap or round the value.
`hardware_concurrency`	Samsung Internet	ok	Some browsers cap or round the value.
`heap_limit`	Safari on macOS	unavailable	performance.memory is a Chromium API. Reports unavailable / no_api.
`heap_limit`	Safari and every iOS browser	unavailable	performance.memory is a Chromium API. Reports unavailable / no_api.
`heap_limit`	Firefox	unavailable	performance.memory is a Chromium API. Reports unavailable / no_api.
`heap_limit`	Firefox resistFingerprinting and Tor Browser	unavailable	performance.memory is a Chromium API. Reports unavailable / no_api.
`keyboard_layout`	Chrome (desktop)	ok	navigator.keyboard.getLayoutMap() is a Chromium desktop API; blocked in cross-origin iframes.
`keyboard_layout`	Chrome on Android	varies	Chromium API meant for physical keyboards; on Android expect unavailable.
`keyboard_layout`	Safari on macOS	unavailable	No navigator.keyboard here: unavailable / no_api.
`keyboard_layout`	Safari and every iOS browser	unavailable	No navigator.keyboard here: unavailable / no_api.
`keyboard_layout`	Firefox	unavailable	No navigator.keyboard here: unavailable / no_api.
`keyboard_layout`	Firefox resistFingerprinting and Tor Browser	unavailable	No navigator.keyboard here: unavailable / no_api.
`keyboard_layout`	Brave	varies	Chromium API; Brave may turn it off.
`keyboard_layout`	Microsoft Edge	ok	navigator.keyboard.getLayoutMap() is a Chromium desktop API; blocked in cross-origin iframes.
`keyboard_layout`	Samsung Internet	varies	Chromium API meant for physical keyboards; on Android expect unavailable.
`languages`	Firefox resistFingerprinting and Tor Browser	ok	resistFingerprinting can normalise the reported language.
`pdf_viewer`	Safari and every iOS browser	varies	unavailable where navigator.pdfViewerEnabled does not exist.
`pixel_ratio`	Firefox resistFingerprinting and Tor Browser	excluded	Exclusion table: firefox_rfp (fixed or normalised values).
`plugins`	Chrome on Android	varies	Mobile builds often list no plugins and then report the plain value none.
`plugins`	Safari and every iOS browser	varies	Mobile builds often list no plugins and then report the plain value none.
`plugins`	Brave	excluded	Exclusion table: brave_farbling (Brave adds per-site, per-session noise).
`plugins`	Samsung Internet	varies	Mobile builds often list no plugins and then report the plain value none.
`private_click`	Chrome (desktop)	none	No attributionSourceId on anchors: reports the plain value none.
`private_click`	Chrome on Android	none	No attributionSourceId on anchors: reports the plain value none.
`private_click`	Safari on macOS	ok	Safari Private Click Measurement exposes attributionSourceId.
`private_click`	Safari and every iOS browser	varies	Depends on whether the app's WebKit exposes Private Click Measurement; none otherwise.
`private_click`	Firefox	none	No attributionSourceId on anchors: reports the plain value none.
`private_click`	Firefox resistFingerprinting and Tor Browser	none	No attributionSourceId on anchors: reports the plain value none.
`private_click`	Brave	none	No attributionSourceId on anchors: reports the plain value none.
`private_click`	Microsoft Edge	none	No attributionSourceId on anchors: reports the plain value none.
`private_click`	Samsung Internet	none	No attributionSourceId on anchors: reports the plain value none.
`screen_frame`	Firefox resistFingerprinting and Tor Browser	excluded	Exclusion table: firefox_rfp (fixed or normalised values).
`screen_resolution`	Firefox resistFingerprinting and Tor Browser	excluded	Exclusion table: firefox_rfp (fixed or normalised values).
`speech_voices`	Chrome (desktop)	ok	Digest of the voice list, or none; some browsers fill the list late.
`speech_voices`	Chrome on Android	ok	Digest of the voice list, or none; some browsers fill the list late.
`speech_voices`	Safari on macOS	ok	Digest of the voice list, or none; some browsers fill the list late.
`speech_voices`	Safari and every iOS browser	ok	Digest of the voice list, or none; some browsers fill the list late.
`speech_voices`	Firefox	ok	Digest of the voice list, or none; some browsers fill the list late.
`speech_voices`	Firefox resistFingerprinting and Tor Browser	varies	Digest of the voice list, or none when the list is empty.
`speech_voices`	Brave	ok	Digest of the voice list, or none; some browsers fill the list late.
`speech_voices`	Microsoft Edge	ok	Digest of the voice list, or none; some browsers fill the list late.
`speech_voices`	Samsung Internet	ok	Digest of the voice list, or none; some browsers fill the list late.
`time_zone`	Firefox resistFingerprinting and Tor Browser	excluded	Exclusion table: firefox_rfp (fixed or normalised values).
`ua_client_hints`	Chrome (desktop)	ok	he=blocked when a Permissions Policy refuses the detailed hints.
`ua_client_hints`	Chrome on Android	ok	he=blocked when a Permissions Policy refuses the detailed hints.
`ua_client_hints`	Safari on macOS	unavailable	navigator.userAgentData (Client Hints) is a Chromium API. Reports unavailable / no_api.
`ua_client_hints`	Safari and every iOS browser	unavailable	navigator.userAgentData (Client Hints) is a Chromium API. Reports unavailable / no_api.
`ua_client_hints`	Firefox	unavailable	navigator.userAgentData (Client Hints) is a Chromium API. Reports unavailable / no_api.
`ua_client_hints`	Firefox resistFingerprinting and Tor Browser	unavailable	navigator.userAgentData (Client Hints) is a Chromium API. Reports unavailable / no_api.
`ua_client_hints`	Brave	ok	Chromium API; the brand list is whatever Brave reports.
`ua_client_hints`	Microsoft Edge	ok	he=blocked when a Permissions Policy refuses the detailed hints.
`ua_client_hints`	Samsung Internet	ok	he=blocked when a Permissions Policy refuses the detailed hints.
`ua_versions`	Safari on macOS	unavailable	navigator.userAgentData (Client Hints) is a Chromium API. Reports unavailable / no_api.
`ua_versions`	Safari and every iOS browser	unavailable	navigator.userAgentData (Client Hints) is a Chromium API. Reports unavailable / no_api.
`ua_versions`	Firefox	unavailable	navigator.userAgentData (Client Hints) is a Chromium API. Reports unavailable / no_api.
`ua_versions`	Firefox resistFingerprinting and Tor Browser	unavailable	navigator.userAgentData (Client Hints) is a Chromium API. Reports unavailable / no_api.
`ua_versions`	Brave	ok	Chromium API; not in either id.
`webgl_image`	Chrome (desktop)	ok	noisy / render_mismatch if an extension or setting adds noise to readback.
`webgl_image`	Chrome on Android	ok	noisy / render_mismatch if an extension or setting adds noise to readback.
`webgl_image`	Safari on macOS	varies	Apple describes fingerprinting protections that can add noise to readback in some modes (for example private browsing); WhiskerJS reports noisy / render_mismatch when the double render differs.
`webgl_image`	Safari and every iOS browser	varies	Apple describes fingerprinting protections that can add noise to readback in some modes (for example private browsing); WhiskerJS reports noisy / render_mismatch when the double render differs.
`webgl_image`	Firefox	ok	noisy / render_mismatch if an extension or setting adds noise to readback.
`webgl_image`	Firefox resistFingerprinting and Tor Browser	excluded	Exclusion table: firefox_rfp (fixed or normalised values).
`webgl_image`	Brave	excluded	Exclusion table: brave_farbling (Brave adds per-site, per-session noise).
`webgl_image`	Microsoft Edge	ok	noisy / render_mismatch if an extension or setting adds noise to readback.
`webgl_image`	Samsung Internet	ok	noisy / render_mismatch if an extension or setting adds noise to readback.
`webgl_params`	Chrome (desktop)	ok	Where WebGL 1 is available; unavailable / no_context without it.
`webgl_params`	Chrome on Android	ok	Where WebGL 1 is available; unavailable / no_context without it.
`webgl_params`	Safari on macOS	ok	Where WebGL 1 is available; unavailable / no_context without it.
`webgl_params`	Safari and every iOS browser	ok	Where WebGL 1 is available; unavailable / no_context without it.
`webgl_params`	Firefox	ok	Where WebGL 1 is available; unavailable / no_context without it.
`webgl_params`	Firefox resistFingerprinting and Tor Browser	ok	Where WebGL 1 is available; unavailable / no_context without it.
`webgl_params`	Brave	ok	Where WebGL 1 is available; unavailable / no_context without it.
`webgl_params`	Microsoft Edge	ok	Where WebGL 1 is available; unavailable / no_context without it.
`webgl_params`	Samsung Internet	ok	Where WebGL 1 is available; unavailable / no_context without it.
`webgl_renderer`	Safari on macOS	ok	Often a generic string such as Apple GPU.
`webgl_renderer`	Safari and every iOS browser	ok	Often a generic string such as Apple GPU.
`webgl_renderer`	Firefox	ok	Read from gl.RENDERER; WEBGL_debug_renderer_info is not requested in Firefox.
`webgl_renderer`	Firefox resistFingerprinting and Tor Browser	excluded	Exclusion table: firefox_rfp (fixed or normalised values).
`webgl_vendor`	Firefox	ok	Read from gl.VENDOR; WEBGL_debug_renderer_info is not requested in Firefox.
`webgl_vendor`	Firefox resistFingerprinting and Tor Browser	excluded	Exclusion table: firefox_rfp (fixed or normalised values).
`webgpu`	Chrome (desktop)	varies	Depends on browser version, operating system and GPU; needs a secure context. unavailable / no_api without navigator.gpu, no_context without an adapter.
`webgpu`	Chrome on Android	varies	Depends on browser version, operating system and GPU; needs a secure context. unavailable / no_api without navigator.gpu, no_context without an adapter.
`webgpu`	Safari on macOS	varies	Depends on browser version, operating system and GPU; needs a secure context. unavailable / no_api without navigator.gpu, no_context without an adapter.
`webgpu`	Safari and every iOS browser	varies	Depends on browser version, operating system and GPU; needs a secure context. unavailable / no_api without navigator.gpu, no_context without an adapter.
`webgpu`	Firefox	varies	Depends on browser version, operating system and GPU; needs a secure context. unavailable / no_api without navigator.gpu, no_context without an adapter.
`webgpu`	Firefox resistFingerprinting and Tor Browser	varies	Depends on browser version, operating system and GPU; needs a secure context. unavailable / no_api without navigator.gpu, no_context without an adapter.
`webgpu`	Brave	varies	Depends on browser version, operating system and GPU; needs a secure context. unavailable / no_api without navigator.gpu, no_context without an adapter.
`webgpu`	Microsoft Edge	varies	Depends on browser version, operating system and GPU; needs a secure context. unavailable / no_api without navigator.gpu, no_context without an adapter.
`webgpu`	Samsung Internet	varies	Depends on browser version, operating system and GPU; needs a secure context. unavailable / no_api without navigator.gpu, no_context without an adapter.

Questions and answers

Is this matrix measured?

Not yet. Almost every cell is expected behaviour read from the library code and documentation. Only the cells marked lab come from the early lab sample at signalsVersion 1, which covered four device and browser pairs. The matrix will be refreshed from aggregated diagnostics.

Why do all iOS browsers share one column?

On iOS every browser uses Apple's WebKit engine and reports the Apple vendor, so WhiskerJS classes Chrome, Firefox and Edge on iOS as safari, the same as Safari itself.

What does varies mean?

The status depends on the browser version, a setting, a private window, an extension or the device. The note on that row says what it depends on.

BrowsersOne page per browser family, with what works and what is excluded.The exclusion tableWhy Brave and Firefox resistFingerprinting skip some components.SignalsEvery component on its own page.Live demoSee the real statuses in your own browser.

Browser support matrix