| 6 |
`box-shadow-*` longhands |
| 0 |
`display-p3-linear` colorspace |
| 3 |
Using `color-mix()` without specifying a colorspace |
| 10 |
CSS `contrast-color()` function |
| 13 |
`background-clip: border-area` |
| 11 |
JSON.parse source text access |
| 0 |
Payment Handler API |
| 5 |
WebVTT |
| 4 |
CSS filter() function |
| 2 |
fully support fetch/range |
| 1 |
fully support fetch/body for formdata and mime-type |
| 3 |
Support autocorrect attribute |
| 6 |
CSS Paint API |
| 19 |
Customized built-in elements |
| 3 |
IndexedDB getAllRecords() and direction option for getAll()/getAllKeys() |
| 6 |
CSS object-view-box |
| 6 |
CSS Custom Highlight API |
| 0 |
Advancing Gamepad API Test Automation |
| 0 |
WASM Memory64 |
| 1 |
CSS Flexbox Sizing |
| 1 |
[Carryover] Interop Mobile Testing |
| 0 |
Incumbent Globals in Promises |
| 1 |
NavigationTiming - NotRestoredReasons |
| 4 |
Carryover evaluation: Accessibility Testing Investigation |
| 10 |
Mathematics Rendering |
| 1 |
Installed Web App Webdriver Testing |
| 4 |
Trusted Types |
| 8 |
View Transition Types |
| 7 |
text-wrap:pretty |
| 10 |
Scroll snap events |
| 5 |
scroll snap |
| 3 |
Web maps rendered as HTML |
| 0 |
Permissions Policy |
| 3 |
Scroll markers |
| 5 |
reading-flow |
| 16 |
popover="hint" |
| 3 |
IME Testing |
| 1 |
Promises In Detached Documents |
| 3 |
Timing of scroll events relative to animation events |
| 8 |
Rendering of fieldset / legend |
| 4 |
`::before` and `::after` on replaced elements |
| 4 |
Pointer Events for Mobile |
| 2 |
MediaStreamTrackProcessor and VideoTrackGenerator |
| 6 |
WebTransport |
| 9 |
Prioritized Task Scheduling |
| 0 |
Web Neural Network API (WebNN) for On-Device AI |
| 2 |
Federated Credential Management (FedCM) for Interoperable Identity |
| 37 |
Support `sizes=auto` on img and source elements |
| 3 |
Navigation API precommit handlers |
| 9 |
display-animation |
| 17 |
dialog closedby |
| 13 |
Cross-document View Transitions |
| 16 |
::details-content |
| 14 |
CSS Scroll Snap Events |
| 3 |
Interopability of all rel attributes for the <link> HTML element |
| 128 |
ESM Module Loading: Cyclic Module Records / multiple top-level awaits in different modules |
| 9 |
Standardize CSS Filters on Inline SVG Elements |
| 1 |
Custom supports |
| 17 |
CSS Gap Decorations |
| 2 |
WebRTC Interop |
| 3 |
Federated Credential Management (FedCM) API |
| 3 |
Opt-In Partitioned Cookies (CHIPS) |
| 8 |
WebDriver BiDi |
| 34 |
JSPI (JavaScript Promise Integration) for WASM |
| 9 |
Canvas text rendering and metrics (2026 edition) |
| 52 |
CSS Scroll State Queries |
| 23 |
Keyboard focusable scrollers |
| 10 |
CSS Typed OM Level 1 |
| 0 |
Standardized Browser Sidebar |
| 0 |
Split-screen multi-pane layouts |
| 0 |
Unified PWA UX or Navigation, Tabs, Sidebar, and Multi-Pane Layout |
| 72 |
Viewports |
| 17 |
Web Share API |
| 0 |
Permissions Policy interop |
| 34 |
Speculation Rules API |
| 16 |
Intersection Observer v2 |
| 18 |
Network Information API (connection) |
| 17 |
Resource Timing |
| 48 |
Advanced attr() |
| 5 |
Media elements `volume`: <audio>, <video> |
| 2 |
ScreenOrientation: lock() method |
| 13 |
SVG stroke-alignment |
| 5 |
Fullscreen API |
| 54 |
`fetch`: `ReadableStream` in `body` |
| 8 |
Signature-based Integrity |
| 23 |
HTML `blocking=render` attribute |
| 40 |
fetchLater API |
| 26 |
ReadableStream API: [Symbol.asyncIterator] |
| 36 |
Long Animation Frames API |
| 16 |
Support css "element()" function in all browsers |
| 0 |
Firefox makes Voiceover read all non-interactive elements as "clickable" |
| 5 |
SharedWorker |
| 23 |
HTML `switch` control |
| 30 |
CSS `text-box` and `text-box-*` |
| 18 |
CSS Stroked text |
| 0 |
Out-of-bounds keyframe values |
| 31 |
Dark mode for SVG |
| 46 |
Core Web Vitals: CLS / Layout Shift |
| 34 |
CSS Module Scripts |
| 11 |
Consistent Styling for Search Input Clear Button |
| 23 |
`stretch` value for height & width. |
| 20 |
CSS `ui-* font family` |
| 28 |
`alpha` attribute for `<input type="color">` |
| 65 |
CSS `corner-shape` |
| 42 |
Notification API |
| 27 |
CSS `shape()` basic shape function |
| 16 |
Allow omission of fragment when using SVG `<use>` |
| 36 |
Support wrap-inside property for control of line breaks within boxes |
| 44 |
Implement hanging punctuation for improved typography and layout |
| 41 |
Full hyphenation control for better readability, and to bring the web up to the same typesetting quality as InDesign, Word, etc |
| 69 |
Full support for break-after to prevent broken typography in multi-column and paginated material including ePub ebooks |
| 40 |
Full support for font-variant-position to prevent loss of visual semantics |
| 19 |
CSS `justify-items` and `justify-self` without flexbox or grid |
| 54 |
CSS `@custom-media` |
| 37 |
DOM State-Preserving Move: `moveBefore()` |
| 68 |
Scroll-driven animations |
| 82 |
CSS `@container style()` |
| 19 |
CSS property: `overlay` |
| 21 |
CSS `interactivity: inert` |
| 54 |
CSS `line-clamp` property |
| 23 |
CSS `accent-color` property |
| 32 |
Scoped custom element registries |
| 24 |
CSS `background-clip: text` |
| 27 |
CSS `:open` pseudo-class |
| 45 |
CSS `sibling-count()` and `sibling-index()` functions |
| 94 |
Temporal (Interop 2026 Focus Area Proposal) |
| 1 |
WebXR API (Interop 2026 Focus Area Proposal) |
| 5 |
`font-smooth` and text rendering on macOS |
| 25 |
WebGPU API (Interop 2026 Focus Area Proposal) |
| 1 |
Consistent Print Layout Width |
| 22 |
VirtualKeyboard API |
| 22 |
XSL Transformations (XSLT) Version 3.0 |
| 95 |
Reference Target for Cross-Root ARIA |
| 0 |
Smarter Article Reading Feature for Browsers for Iphones and Macbooks |
| 0 |
Contextual menu option "Add Image to Photos" does NOT work with animated .GIF files |
| 59 |
CSS `calc-size()` and `interpolate-size` |
| 63 |
Invoker API |
| 42 |
margin-trim |
| 51 |
requestIdleCallback |
| 44 |
field-sizing: content |
| 14 |
Media element pseudo-classes |
| 9 |
Web NFC support |
| 10 |
Web Bluetooth API support |
| 26 |
unprefix the `-webkit-user-select` CSS property |
| 2 |
OpenID4VC support |
| 4 |
Modern gif replacement: Animated AVIF bugs and performance issues |
| 31 |
Link parameters for styling non-inline SVG |
| 206 |
Customisable Single Select |
| 567 |
JPEG XL image format |