btw, Chrome, Safari, and Firefox all froze their User-Agent strings at “Mac OS X 10.15” after running into web compatibility problems reporting “Mac OS X 11.0”. Some websites’ User-Agent parsers assumed there would never be an 11.0 version of macOS.
Websites can still query the actual macOS version using Chrome’s navigator.userAgentData API. Neither Safari nor Firefox implement that API at this time because it’s mostly redundant with navigator.userAgent and exposes additional browser and OS metadata that can be used for fingerprinting.
Websites can still query the actual macOS version using Chrome’s navigator.userAgentData API. Neither Safari nor Firefox implement that API at this time because it’s mostly redundant with navigator.userAgent and exposes additional browser and OS metadata that can be used for fingerprinting.