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.
To learn more, see
Navigator: userAgentData property,
NavigatorUAData,
NavigatorUAData: brands property,
NavigatorUAData: getHighEntropyValues() method,
NavigatorUAData: mobile property,
NavigatorUAData: platform property,
NavigatorUAData: toJSON() method,
WorkerNavigator: userAgentData property,
Sec-CH-UA,
Sec-CH-UA-Arch,
Sec-CH-UA-Bitness,
Sec-CH-UA-Full-Version-List,
Sec-CH-UA-Mobile,
Sec-CH-UA-Model,
Sec-CH-UA-Platform,
Sec-CH-UA-Platform-Version at MDN.
Compatibility
- 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
- Firefox for Android ❌ See bugzil.la/935216
- Safari ❌ Search for bugs Search for standards position
- Safari on iOS ❌ Search for bugs Search for standards position