Web Platform Baseline Status Breakdown
Total Features: 1224
Categories:
All
CSS (6)
Text (4)
Units (4)
Workers (3)
Animation (2)
Color types (2)
Container queries (2)
JavaScript (2)
JavaScript modules (2)
Reporting (2)
Scrolling (2)
Selectors (2)
Streams (2)
WebAssembly (2)
Clipping, shapes, and masking (1)
Custom elements (1)
Explicit defaults (1)
HTML (1)
Image scaling (1)
Internationalization (1)
Iterators (1)
Maps (1)
MathML (1)
Security (1)
View transitions (1)
WebGL extensions (1)
2026
1 features
• October 2026
Newly Available
The CustomElementRegistry() constructor creates a new custom element registry that's separate from the global window.customElements registry. Creating more than one registry is useful for multiple custom elements that have the same tag name to coexist.
Chrome
146
Firefox
159
Safari
26
Edge
146
Baseline Date: Oct 27, 2026