Web Platform Baseline Status Breakdown
Total Features: 1219
Categories:
All
CSS (15)
Scrolling (6)
WebAssembly (6)
JavaScript (5)
Text (5)
Units (4)
Selectors (3)
View transitions (3)
Workers (3)
Clipboard (2)
Color types (2)
Container queries (2)
HTML (2)
HTML elements (2)
Internationalization (2)
Iterators (2)
JSON (2)
JavaScript modules (2)
Performance (2)
Print media (2)
Reporting (2)
Resource hints (2)
Ruby (2)
Streams (2)
Text fragments (2)
Text wrap (2)
Typed arrays (2)
Animation (1)
Canvas (1)
Clipping, shapes, and masking (1)
Cookies (1)
Custom elements (1)
DOM (1)
Explicit defaults (1)
Fetch (1)
File system access (1)
Fonts (1)
Forms (1)
Gradients (1)
HTTP (1)
Image scaling (1)
Layout (1)
Maps (1)
MathML (1)
Media elements (1)
Promises (1)
Regular expressions (1)
Security (1)
Selection (1)
Sets (1)
Transitions (CSS) (1)
Web components (1)
WebGL (1)
WebGL extensions (1)
WebRTC (1)
2026
1 features
• May 2026
Newly Available
The source property of a ToggleEvent object is the element which triggered the toggle event to fire for a popover, <dialog>, or <details> element, if applicable.
Chrome
140
Firefox
145
Safari
26.5
Edge
140
Baseline Date: May 11, 2026
2025
1 features
• January 2025