User Agent Parser
Paste a user agent string to see which browser, operating system and device it describes.
How it works
- 1
Paste the user agent
From your logs, an error report or a request header.
- 2
Read the result
Browser, OS, device type and rendering engine.
- 3
Use it
For debugging, analytics or support tickets.
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Frequently asked questions
It is reliable for mainstream browsers, but user agents can be spoofed.
What a user agent string tells you
Every browser sends a User-Agent header describing itself. The string is long and historically messy — nearly every browser claims to be “Mozilla” — so parsing it by hand is error-prone.
This parser recognises the main browsers, operating systems and device types. Treat the result as a good guess: user agents can be changed or hidden.