Web platform features explorer - User agent client hints

The Sec-CH-UA HTTP request header and the navigator.userAgentData API expose browser and platform information used to vary responses and application logic. User agent client hints are similar to user agent strings but more privacy-preserving and safer to parse.

Status

Limited availability

MDN documentation

User-Agent Client Hints API

Specifications

User-Agent Client Hints, from Web Platform Incubator Community Group (W3C).

Browser support

Chrome 124 Released on 2024-04-16
Chrome Android 124 Released on 2024-04-16
Edge 124 Released on 2024-04-18
Firefox ❌ See bugzil.la/935216 Vendor position : neutral
Firefox for Android ❌ See bugzil.la/935216 Vendor position : neutral
Safari ❌ Vendor position : blocked (concerns: interoperability, privacy)
Safari on iOS ❌ Vendor position : blocked (concerns: interoperability, privacy)

Usage (according to Chrome Platform Status)

~75.376% of page loads. More data at chromestatus.

Web Platform Tests (WPT)

View the latest WPT test results for this feature

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