User-Agent Parser

How to use this User-Agent parser

  1. Paste any User-Agent string, or click "Use my browser's UA".
  2. See the browser, engine, OS, and device type broken down instantly.
  3. Useful for debugging analytics, log files, or browser-specific bugs.

What is a User-Agent string?

It's a text header sent by every browser with each request, identifying the browser, rendering engine, operating system, and device — servers use it to serve appropriate content or for analytics.

Why does the User-Agent string mention multiple browsers?

For historical compatibility, most browsers include tokens from older browsers they're compatible with (like "Mozilla" and "Safari" appearing even in Chrome) — a quirk dating back to the "browser wars" that never went away.

Can User-Agent strings be faked?

Yes, easily — any browser's developer tools or extensions can override it, so User-Agent detection should never be relied on for security purposes, only for optional feature adjustments.