User Agent String Parser
Paste any user-agent string (yours is pre-filled) and see the browser and version, rendering engine, operating system and device type broken out. Useful for debugging analytics and support tickets. Parsed entirely in your browser — nothing is sent anywhere.
- 100% free
- Private & safe
- Runs in your browser
Why use User Agent Parser?
User Agent Parser is a quick, no-nonsense developer utility that runs entirely client-side, so your code and data never leave your machine.
- Runs instantly in your browser — nothing to install, nothing uploaded.
- Completely free, with no account, no watermarks and no usage limits.
- Handles Input: a user-agent string; Output: browser, engine, OS, device type.
- Your own user agent is loaded automatically.
- Works on any device — desktop, tablet and phone — and is fully keyboard accessible.
How to use User Agent Parser
- Your own user agent is loaded automatically.
- Or paste any user-agent string.
- Read the parsed browser, engine, OS and device.
- Copy any field you need.
Examples
- Identifying an old Android WebView from a bug report.
- Confirming a request came from Safari on iOS.
Supported formats & limits
- Input: a user-agent string
- Output: browser, engine, OS, device type
Limitations
- User agents can be spoofed or freezed by browsers, so results are best-effort, not guaranteed.
Frequently asked questions
Is my user agent sent anywhere?
No — parsing happens locally in your browser.
Why is the version approximate?
Modern browsers freeze or reduce UA detail for privacy, so some versions are coarse.
Can I paste any UA?
Yes — replace the pre-filled value with any user-agent string.
Was this tool helpful?