User Agent Parser

Find the browser, OS and device from a user-agent string. Free, no sign-up, works in your browser.

🔒 100% private — processing happens in your browser. Nothing is uploaded.

How to use the user agent parser

  1. Your own browser’s user-agent is filled in automatically.
  2. Or paste a user-agent string from a server log, analytics report or bug report.
  3. See the browser and version, engine, operating system, device type and whether it is a bot.

Every browser sends a user-agent header to websites. Support teams use it to understand bug reports, developers use it to read access logs, and site owners use it to spot crawlers. Note that Windows 11 still reports itself as “Windows NT 10.0”, and many browsers reduce the details they share for privacy.

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