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.

Learning resources on MDN

• User-Agent Client Hints API

Browser support

• Chrome 98 Released on 2022-02-01
• Chrome Android 98 Released on 2022-02-01
• Edge 98 Released on 2022-02-03
• 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)

View web-platform-tests results for this feature - View the feature source file - Edit the feature - Report an issue about this feature