Custom highlights style arbitrary text ranges, without adding extra elements to the DOM.

Learning resources on MDN

• CSS Custom Highlight API

Browser support

• Chrome 105 Released on 2022-09-02
• Chrome Android 105 Released on 2022-09-02
• Edge 105 Released on 2022-09-01
• Firefox ❌ Vendor position : positive
• Firefox for Android ❌ Vendor position : positive
• Safari 17.2 Released on 2023-12-11
• Safari on iOS 17.2 Released on 2023-12-11

Baseline availability blocked since December 2023 by Firefox (14 months)

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