User Agent Parser
Parse user agent strings to extract browser and device info
Paste a User-Agent string and break it down into the browser, version, operating system, and device it represents. It's useful for debugging analytics, testing device-specific behavior, and understanding the raw header your server receives from clients.
How to use User Agent Parser
- Paste a User-Agent string (or use your own).
- See the detected browser and version.
- Review the operating system and device details.
- Use the parsed data to debug or segment traffic.
Frequently asked questions
Where do I find a User-Agent string?
It's sent in the User-Agent HTTP header with every browser request and appears in server logs; you can also read your own from browser developer tools.
Why are User-Agent strings so messy?
For historical compatibility reasons, browsers include legacy tokens like "Mozilla/5.0", which is why the strings look cluttered and need parsing to be readable.
Is User-Agent parsing reliable?
It's a strong signal but not foolproof: strings can be spoofed or frozen by privacy features, so treat the results as best-effort detection.
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