User agent parser

Read a user agent string: which browser, engine, system and device it claims to be.

Processed on your device, never uploaded

User agent

User agent string

Result

Paste a user agent, or use the one your browser sends. Nothing is sent anywhere.

What it does

A user agent string tells a website which browser and device a request comes from, but it is hard to read. This tool breaks it into the browser and version, the rendering engine, the operating system, the device type and maker, and flags well-known crawlers and scripts. Paste a string from a log, or press Use mine.

How to use it

1Paste a user agent string, or use your own.
2Read the browser, engine, system and device.
3Check the bot flag for crawlers and scripts.

Questions

Is my user agent sent anywhere?

No. It is read in your browser. Nothing is sent.

Can a user agent be wrong?

Yes. Anyone can set any string, so use it as a hint, not as proof.

How does it spot bots?

It matches the names of well-known crawlers, tools and libraries such as Googlebot, curl and python-requests.