User Agent Parser

Identify the browser, engine, operating system and device behind any user agent string.

Your user agent string

Browser: —

Version: —

Engine: —

System: —

Device: —

—

Matching uses pattern tables built into the page, so no lookup service is contacted.

Paste a user agent string into the box, or click Use my browser to fill it automatically.
Press Parse to match it against the browser, engine, system and device tables.
Read the detected values and the signal list, then copy the summary if you need it.

Common questions about the free online user agent parser.

It usually reveals the browser and its version, the rendering engine, the operating system and whether the device is mobile.

Most browsers keep the Chrome token for compatibility, so the parser checks for Edge, Opera and other brands first.

It is a best effort match on text, because user agent strings can be shortened, spoofed or frozen for compatibility.

Yes. The box is filled with the user agent of the browser you are using, and you can paste any other string instead.

No. It describes browser and platform details, not your name, and it is sent with every request you make.

The string matched a known crawler or script token such as bot, curl or python requests, so the traffic is likely automated.

No. The pattern matching happens entirely inside this page.

Yes, parsing is free and unlimited, with no account required.

Last updated: October 10, 2026