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Web Platform Baseline Status Breakdown Total Features: 1191
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Showing 7 of 37 features

2026

7 features
• January 2026

The :active-view-transition CSS pseudo-class matches the root element when a view transition is active. The :active-view-transition-type() CSS pseudo-class matches only when the active view transition was started with the specified type.

Chrome 125
Firefox 147
Safari 18.2
Edge 125
Baseline Date: Jan 13, 2026

The navigator.serviceWorker.register() method accepts { type: "module" } to load scripts that use import and export. Also known as ECMAScript modules or ESM in service workers.

Chrome 91
Firefox 147
Safari 15
Edge 91
Baseline Date: Jan 13, 2026
Newly Available

The navigation API initiates, intercepts, or modifies browser navigation actions. Not to be confused with the navigator API.

Chrome 102
Firefox 147
Safari 26.2
Edge 102
Baseline Date: Jan 13, 2026
Newly Available

The rcap CSS length unit is a font-relative length equal to the value of the cap unit on the root element. Cap-height is approximately equal to the height of a capital Latin letter.

Chrome 118
Firefox 147
Safari 17.2
Edge 118
Baseline Date: Jan 13, 2026
Newly Available

The rch CSS length unit is a font-relative length equal to the value of the ch unit on the root element. ch length is based on the width of the zero (0) character.

Chrome 111
Firefox 147
Safari 17.2
Edge 111
Baseline Date: Jan 13, 2026
Newly Available

The rex CSS length unit is a font-relative length that is equal to the x-height of the root element.

Chrome 111
Firefox 147
Safari 17.2
Edge 111
Baseline Date: Jan 13, 2026
Newly Available

The ric CSS length unit, or root international character, is a font-relative length equal to the width of CJK character relative to the root element.

Chrome 111
Firefox 147
Safari 17.2
Edge 111
Baseline Date: Jan 13, 2026
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