Web platform features explorer - Custom highlights

Web platform features explorer

Tags: api css

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

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CSS Custom Highlight API

Specifications

CSS Custom Highlight API Module Level 1, from Cascading Style Sheets (CSS) Working Group (W3C).

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 (19 months)

Developer signals

State of HTML 2024: features/all_features question
State of HTML 2024: content/content_features question

Usage (according to Chrome Platform Status)

~0.018% of page loads. More data at chromestatus.

Web Platform Tests (WPT)

View the latest WPT test results for this feature

View as JSON | Edit this feature | Report an issue | Web-features entry: source, dist