User-Agent Parser

Inspect any browser User-Agent string. Detect the browser, version, OS, and device.

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What this does

User-Agent Parser decodes the User-Agent string your browser sends to every website. See the detected browser, version, rendering engine, operating system, and device type.

When to use it

  • Debugging a website that behaves differently in one browser
  • Verifying what a server sees when you visit
  • Testing User-Agent strings from logs or support tickets
  • Confirming a request came from a real browser vs a bot or script

Frequently asked

Can a User-Agent be faked?

Easily — it's just an HTTP header. Don't rely on it for security; use proper authentication for anything sensitive.

Why does my browser identify as Mozilla/5.0?

Historical accident. Every modern browser includes 'Mozilla/5.0' for compatibility with old sites that sniffed for it.