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Web Platform Baseline Status Breakdown Total Features: 1191
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Categories: All CSS (101) HTML elements (98) Selectors (46) JavaScript (43) Forms (40)
WebGL extensions (37) WebAssembly (22) Media queries (21) Fonts (19) Performance (19) Text (19) Scrolling (18) Arrays (17) Layout (17) HTML (16) Progressive web app (15) Typed arrays (14) Units (14) Canvas (13) Background (12) Color types (12) Media elements (12) Strings (12) Clipping, shapes, and masking (11) Security (11) Web components (11) WebXR (11) Typographic font features (10) Animation (9) Internationalization (9) Reporting (9) Text wrap (9) Clipboard (8) Workers (8) Containment (7) DOM (7) Fetch (7) JavaScript modules (7) Print media (7) Sensors (7) CSS object models (6) Image formats (6) Iterators (6) Landmark elements (6) Positioning (6) Promises (6) SVG (6) Storage (6) Streams (6) Credential management (5) Custom elements (5) Explicit defaults (5) Font synthesis (5) HTTP (5) Messaging (5) Multi-column (5) Resource hints (5) Ruby (5) Selection (5) Speech (5) Transitions (CSS) (5) View transitions (5) Web audio (5) WebGL (5) Container queries (4) Cookies (4) Counters (4) File system access (4) Flexbox (4) Gamepad (4) Grid (4) Images (4) Lists (4) Primitive types (4) Regular expressions (4) WebDriver (4) WebRTC (4) Blend mode (3) Borders and outlines (3) Gradients (3) Image scaling (3) JSON (3) Maps (3) MathML (3) Payments (3) Reading order (3) Scroll markers (3) Transforms (3) WebAuthn (3) WebGPU (3) White space (3) Worklets (3) XML (3) Collections (2) Compute pressure (2) Geolocation (2) IndexedDB (2) Parsing and serialization (2) Resource integrity (2) Sets (2) Text fragments (2) WebMCP (2) CSS environment variables (1)
Showing 8 of 98 features

Limited Availability

8 features
• In Progress / Not Yet Baseline

The closedby HTML attribute for <dialog> sets which user actions close a dialog. For example, closedby="any" allows the dialog to be closed by clicking outside of it.

Chrome 134
Firefox 141
Safari
Edge 134
Status: Incomplete cross-engine support

The <geolocation> HTML element represents a button that, upon activation, prompts the user to choose whether to grant the page access to geolocation data.

Chrome 144
Firefox
Safari
Edge 144
Status: Incomplete cross-engine support

The switch attribute, when present on an <input type="checkbox"> HTML element, renders a switch control with an on and off state instead of a checkbox control.

Chrome
Firefox
Safari 17.4
Edge
Status: Incomplete cross-engine support

The <input type="color"> HTML element shows a color picker from which users can choose a color value.

Chrome 20
Firefox 29
Safari 12.1
Edge 14
Status: Incomplete cross-engine support

The <select> element's appearance, including the button, selected option, picker dropdown, and options, can be customized using CSS.

Chrome 135
Firefox
Safari
Edge 135
Status: Incomplete cross-engine support

A <canvas> HTML element with the layoutsubtree attribute can draw descendant elements in its rendering context. You can use it to style and layout text in a canvas, expose canvas content to browser features (like accessibility, translate, or find-in-page), and apply 2D and 3D effects to HTML.

Chrome
Firefox
Safari
Edge
Status: Incomplete cross-engine support

Attributes and properties of table elements, such as align, vAlign, noWrap, bgcolor, or char set various visual presentation properties of the table and its sections and cells.

Chrome
Firefox
Safari
Edge
Status: Incomplete cross-engine support

The ability to control the opacity of a color picked using <input type="color"> and determine the colorspace of the selected color.

Chrome
Firefox
Safari 18.4
Edge
Status: Incomplete cross-engine support
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