April 25, 2025
api.AudioWorkletGlobalScope.port(#26615)browsers.opera.releases.119(#26614)browsers.opera.releases.120(#26614)
- 7 contributors have changed 40 files with 400 additions and 192 deletions in 18 commits (
v6.0.8...v6.0.9) - 17,017 total features
- 1,142 total contributors
- 5,211 total stargazers
April 22, 2025
webextensions.api.browsingData.RemovalOptions.excludeOrigin(#26357)webextensions.api.browsingData.RemovalOptions.origin(#26357)
- 9 contributors have changed 21 files with 320 additions and 229 deletions in 26 commits (
v6.0.7...v6.0.8) - 17,016 total features
- 1,142 total contributors
- 5,205 total stargazers
April 18, 2025
webextensions.api.pageAction.getUserSettings(#26540)webextensions.api.pageAction.getUserSettings.returns_userSettings_isOnToolbar_property(#26540)
browsers.edge.releases.138(#26526)webextensions.api.browserAction.getUserSettings(#26540)webextensions.api.browserAction.getUserSettings.returns_userSettings_isOnToolbar_property(#26540)webextensions.api.tabs.group(#26520)webextensions.api.tabs.onUpdated.changeInfo.groupId(#26520)webextensions.api.tabs.onUpdated.filter.properties.groupId(#26520)webextensions.api.tabs.query.queryInfo.groupId(#26520)webextensions.api.tabs.Tab.groupId(#26520)webextensions.api.tabs.ungroup(#26520)
- 7 contributors have changed 248 files with 998 additions and 2,803 deletions in 12 commits (
v6.0.6...v6.0.7) - 17,014 total features
- 1,140 total contributors
- 5,198 total stargazers
April 15, 2025
javascript.builtins.FinalizationRegistry.symbol_as_targettojavascript.builtins.FinalizationRegistry.register.symbol_as_target(#26509)javascript.builtins.WeakRef.symbol_as_targettojavascript.builtins.WeakRef.WeakRef.symbol_as_target(#26509)
css.properties.accent-color.maintains_contrast(#26493)css.types.gradient.repeating-conic-gradient.single_color_stop(#26508)css.types.gradient.repeating-linear-gradient.single_color_stop(#26508)css.types.gradient.repeating-radial-gradient.single_color_stop(#26508)javascript.builtins.FinalizationRegistry.unregister.symbol_as_target(#26509)webdriver.bidi.emulation(#26504)webdriver.bidi.emulation.setGeolocationOverride(#26504)
- 9 contributors have changed 188 files with 787 additions and 526 deletions in 20 commits (
v6.0.5...v6.0.6) - 17,008 total features
- 1,140 total contributors
- 5,194 total stargazers
April 11, 2025
- 9 contributors have changed 28 files with 255 additions and 298 deletions in 18 commits (
v6.0.4...v6.0.5) - 17,001 total features
- 1,139 total contributors
- 5,194 total stargazers
April 8, 2025
api.HTMLHeadElement.profile(#26443)api.SVGCursorElement(#26443)api.SVGFontElement(#26443)api.SVGFontFaceElement(#26443)api.SVGFontFaceFormatElement(#26443)api.SVGFontFaceNameElement(#26443)api.SVGFontFaceSrcElement(#26443)api.SVGFontFaceUriElement(#26443)api.SVGGlyphElement(#26443)api.SVGGlyphRefElement(#26443)api.SVGGlyphRefElement.dx(#26443)api.SVGGlyphRefElement.dy(#26443)api.SVGGlyphRefElement.format(#26443)api.SVGGlyphRefElement.glyphRef(#26443)api.SVGGlyphRefElement.href(#26443)api.SVGGlyphRefElement.x(#26443)api.SVGGlyphRefElement.y(#26443)api.SVGHKernElement(#26443)api.SVGMissingGlyphElement(#26443)api.SVGTRefElement(#26443)api.SVGVKernElement(#26443)api.Window.showModalDialog(#26443)html.elements.head.profile(#26443)html.elements.pre.wrap(#26443)svg.elements.cursor(#26443)svg.elements.cursor.href(#26443)svg.elements.cursor.systemLanguage(#26443)svg.elements.cursor.x(#26443)svg.elements.cursor.xlink_href(#26443)svg.elements.cursor.y(#26443)svg.elements.font(#26443)svg.elements.font-face(#26443)svg.elements.font-face-format(#26443)svg.elements.font-face-format.string(#26443)svg.elements.font-face-name(#26443)svg.elements.font-face-name.name(#26443)svg.elements.font-face-src(#26443)svg.elements.font-face-uri(#26443)svg.elements.font-face-uri.xlink_href(#26443)svg.elements.font-face.accent-height(#26443)svg.elements.font-face.alphabetic(#26443)svg.elements.font-face.ascent(#26443)svg.elements.font-face.bbox(#26443)svg.elements.font-face.cap-height(#26443)svg.elements.font-face.descent(#26443)svg.elements.font-face.font-family(#26443)svg.elements.font-face.font-size(#26443)svg.elements.font-face.font-stretch(#26443)svg.elements.font-face.font-style(#26443)svg.elements.font-face.font-variant(#26443)svg.elements.font-face.font-weight(#26443)svg.elements.font-face.hanging(#26443)svg.elements.font-face.ideographic(#26443)svg.elements.font-face.mathematical(#26443)svg.elements.font-face.overline-position(#26443)svg.elements.font-face.overline-thickness(#26443)svg.elements.font-face.panose-1(#26443)svg.elements.font-face.slope(#26443)svg.elements.font-face.stemh(#26443)svg.elements.font-face.stemv(#26443)svg.elements.font-face.strikethrough-position(#26443)svg.elements.font-face.strikethrough-thickness(#26443)svg.elements.font-face.underline-position(#26443)svg.elements.font-face.underline-thickness(#26443)svg.elements.font-face.unicode-range(#26443)svg.elements.font-face.units-per-em(#26443)svg.elements.font-face.v-alphabetic(#26443)svg.elements.font-face.v-hanging(#26443)svg.elements.font-face.v-ideographic(#26443)svg.elements.font-face.v-mathematical(#26443)svg.elements.font-face.widths(#26443)svg.elements.font-face.x-height(#26443)svg.elements.font.horiz-adv-x(#26443)svg.elements.font.horiz-origin-x(#26443)svg.elements.font.horiz-origin-y(#26443)svg.elements.font.vert-adv-y(#26443)svg.elements.font.vert-origin-x(#26443)svg.elements.font.vert-origin-y(#26443)svg.elements.glyph(#26443)svg.elements.glyph.arabic-form(#26443)svg.elements.glyph.d(#26443)svg.elements.glyph.glyph-name(#26443)svg.elements.glyph.horiz-adv-x(#26443)svg.elements.glyph.lang(#26443)svg.elements.glyph.orientation(#26443)svg.elements.glyph.unicode(#26443)svg.elements.glyph.vert-adv-y(#26443)svg.elements.glyph.vert-origin-x(#26443)svg.elements.glyph.vert-origin-y(#26443)svg.elements.glyphRef(#26443)svg.elements.glyphRef.dx(#26443)svg.elements.glyphRef.dy(#26443)svg.elements.glyphRef.format(#26443)svg.elements.glyphRef.glyphRef(#26443)svg.elements.glyphRef.x(#26443)svg.elements.glyphRef.xlink_href(#26443)svg.elements.glyphRef.y(#26443)svg.elements.hkern(#26443)svg.elements.hkern.g1(#26443)svg.elements.hkern.g2(#26443)svg.elements.hkern.k(#26443)svg.elements.hkern.u1(#26443)svg.elements.hkern.u2(#26443)svg.elements.missing-glyph(#26443)svg.elements.missing-glyph.d(#26443)svg.elements.missing-glyph.horiz-adv-x(#26443)svg.elements.missing-glyph.vert-adv-y(#26443)svg.elements.missing-glyph.vert-origin-x(#26443)svg.elements.missing-glyph.vert-origin-y(#26443)svg.elements.tref(#26443)svg.elements.tref.fill(#26443)svg.elements.tref.fill.context-fill(#26443)svg.elements.tref.systemLanguage(#26443)svg.elements.tref.xlink_href(#26443)svg.elements.vkern(#26443)svg.elements.vkern.g1(#26443)svg.elements.vkern.g2(#26443)svg.elements.vkern.k(#26443)svg.elements.vkern.u1(#26443)svg.elements.vkern.u2(#26443)
api.CustomElementRegistry.define.connectedMoveCallback_lifecycle_callback(#26444)api.EventTarget.when(#26391)api.Observable(#26391)api.Observable.catch(#26391)api.Observable.drop(#26391)api.Observable.every(#26391)api.Observable.filter(#26391)api.Observable.finally(#26391)api.Observable.find(#26391)api.Observable.first(#26391)api.Observable.flatMap(#26391)api.Observable.forEach(#26391)api.Observable.from_static(#26391)api.Observable.inspect(#26391)api.Observable.last(#26391)api.Observable.map(#26391)api.Observable.Observable(#26391)api.Observable.reduce(#26391)api.Observable.some(#26391)api.Observable.subscribe(#26391)api.Observable.switchMap(#26391)api.Observable.take(#26391)api.Observable.takeUntil(#26391)api.Observable.toArray(#26391)api.Subscriber(#26391)api.Subscriber.active(#26391)api.Subscriber.addTeardown(#26391)api.Subscriber.complete(#26391)api.Subscriber.error(#26391)api.Subscriber.next(#26391)api.Subscriber.signal(#26391)browsers.nodejs.releases.20.4.0(#26414)http.headers.Permissions-Policy.deferred-fetch(#26437)http.headers.Permissions-Policy.deferred-fetch-minimal(#26437)
- 10 contributors have changed 82 files with 1,927 additions and 5,500 deletions in 47 commits (
v6.0.3...v6.0.4) - 16,999 total features
- 1,139 total contributors
- 5,193 total stargazers
April 4, 2025
css.properties.dynamic-range-limit.constrained-high(#26412)css.properties.dynamic-range-limit.high(#26412)http.headers.Link.compression-dictionary(#26375)http.headers.Link.expect(#26375)
api.CaptureController.decreaseZoomLevel(#26412)api.CaptureController.forwardWheel(#26412)api.CaptureController.getSupportedZoomLevels(#26412)api.CaptureController.increaseZoomLevel(#26412)api.CaptureController.resetZoomLevel(#26412)api.CaptureController.zoomLevel(#26412)api.CaptureController.zoomlevelchange_event(#26412)api.GPUAdapterInfo.isFallbackAdapter(#26412)api.IdentityCredential.configURL(#26412)browsers.firefox_android.releases.140(#26384)browsers.firefox.releases.140(#26384)browsers.safari_ios.releases.18.5(#26384)browsers.safari.releases.18.5(#26384)browsers.webview_ios.releases.18.5(#26384)css.properties.dynamic-range-limit.constrained(#26412)css.properties.dynamic-range-limit.no-limit(#26412)
- 11 contributors have changed 66 files with 828 additions and 172 deletions in 24 commits (
v6.0.2...v6.0.3) - 17,086 total features
- 1,139 total contributors
- 5,188 total stargazers
April 1, 2025
api.AudioWorklet.port(#26371)browsers.chrome_android.releases.138(#26363)browsers.chrome.releases.138(#26363)browsers.webview_android.releases.138(#26363)css.selectors.after.nested_marker(#26240)css.selectors.before.nested_marker(#26240)
- 6 contributors have changed 328 files with 1,406 additions and 1,186 deletions in 52 commits (
v6.0.1...v6.0.2) - 17,079 total features
- 1,138 total contributors
- 5,178 total stargazers
March 28, 2025
html.elements.link.rel.compression-dictionary(#26257)http.headers.Accept-Encoding.br(#26257)http.headers.Accept-Encoding.dcb(#26257)http.headers.Accept-Encoding.dcz(#26257)http.headers.Accept-Encoding.zstd(#26257)http.headers.Available-Dictionary(#26257)http.headers.Content-Encoding.dcb(#26257)http.headers.Content-Encoding.dcz(#26257)http.headers.Dictionary-ID(#26257)http.headers.Link.compression-dictionary(#26257)http.headers.Use-As-Dictionary(#26257)
- 7 contributors have changed 22 files with 783 additions and 259 deletions in 11 commits (
v6.0.0...v6.0.1) - 17,076 total features
- 1,138 total contributors
- 5,171 total stargazers
March 25, 2025
This major release introduces three breaking changes that may require updates from consumers of @mdn/browser-compat-data.
1. Removal of null and true version values (#24174)
Previously, the version_added, version_removed and version_last fields allowed null (indicating support is unknown) and true (indicating support added/removed in an unknown version).
Now, these values have been removed from the schema. All existing instances have been replaced with explicit or ranged version numbers (e.g. “≤37“).
Impact: Consumers handling null or true values may need to update their code.
2. Improved TypeScript definitions for array values (#26172)
Several fields, such as notes, accept either a single value or an array of at least two values.
Previously, TypeScript definitions used string | string[], requiring consumers to validate array values manually.
Now, these types are more precisely defined as string | [string, string, ...string[]], ensuring that arrays contain at least two values when used.
Impact: Consumers validating array values may need to update their code.
3. New top-level manifests folder (#26109)
Previously, support data for the Web Application Manifest was placed under html/manifest, which inaccurately implied it was an HTML subfeature.
Now, a new top-level manifests folder has been created to host the Web Application Manifest under manifests/webapp to better reflect its independence, and to support future manifest types like the Payment Method Manifest.
Impact: Consumers referencing Web Application Manifest data may need to update their code.
html.manifest.*tomanifest.webapp.*(#26109)
- 3 contributors have changed 38 files with 132 additions and 221 deletions in 3 commits (
v5.7.6...v6.0.0) - 17,065 total features
- 1,136 total contributors
- 5,167 total stargazers