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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 7 of 7 features

2024

1 features
• February 2024
Widely Available

The shadowrootmode attribute on <template> creates a shadow root without the use of JavaScript. It is a declarative alternative to the attachShadow() method.

Chrome 111
Firefox 123
Safari 16.4
Edge 111
Baseline Date: Feb 20, 2024

2023

1 features
• April 2023
Widely Available

The inert HTML attribute marks an element and its descendants as non-interactive. Inert elements don't get focus or fire click events.

Chrome 102
Firefox 112
Safari 15.5
Edge 102
Baseline Date: Apr 11, 2023

2018

1 features
• October 2018
Widely Available

The tabindex HTML attribute make an element focusable, and sets the element's relative ordering for sequential focus navigation.

Chrome 1
Firefox 1.5
Safari 3.1
Edge 18
Baseline Date: Oct 2, 2018

2017

1 features
• March 2017
Widely Available

The srcset and sizes attributes for <img> elements set a list of possible sources for the image and a corresponding list of size conditions for choosing a source, to show a responsive image that fits the size of the display.

Chrome 38
Firefox 38
Safari 10.1
Edge 13
Baseline Date: Mar 27, 2017

2015

3 features
• July 2015
Widely Available

The <ruby> element produces small annotations that are rendered with its base text.

Chrome 5
Firefox 38
Safari 5
Edge 12
Baseline Date: Jul 29, 2015
Widely Available

The <dl>, <dt>, and <dd> HTML elements represent a list of terms and their associated descriptions. Use a description list to create glossaries or similar list of key-value pairs.

Chrome 1
Firefox 1
Safari ≤4
Edge 12
Baseline Date: Jul 29, 2015
Widely Available

The style global HTML attribute applies inline CSS styling declarations to individual elements.

Chrome 1
Firefox 1
Safari 1
Edge 12
Baseline Date: Jul 29, 2015