What is my user agent?

Your user agent is the string your browser sends to identify itself: name, version and OS. See yours here, parsed, with client hints.

Your user agent

It appears here, from navigator.userAgent.

This tool sends and saves nothing. Your browser already sends this string as the User-Agent header (MDN), and site analytics log the page view as usual.

What each part means

Example: Chrome 156 on Windows (versions checked 2026-10-23).

Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/156.0.0.0 Safari/537.36

Part	Meaning
Mozilla/5.0	Legacy token (see FAQ).
(Windows NT 10.0; Win64; x64)	Operating system. Chrome freezes it: Windows 11 still says NT 10.0, macOS always says 10_15_7, Android always says Android 10; K (Chromium).
AppleWebKit/537.36 (KHTML, like Gecko) … Safari/537.36	Compatibility tokens. Constant in Chrome's reduced format (Chromium).
Chrome/156.0.0.0	Browser and major version. Chrome on desktop and Android sends 0.0.0 for the rest (Chromium).

FAQ

Why does Chrome report Mozilla/5.0?

A compatibility token kept for historical reasons. Almost every browser sends it (MDN).

Is my user agent unique?

Not by itself in Chrome: everyone on the same major version, OS and device type sends the same string (Chromium). Combined with other signals it can still feed fingerprinting (MDN).

How do sites detect bots beyond the user agent?

They check other signals, such as navigator.webdriver and the TLS fingerprint. Run the bot detection test or get a current string from the random user agent generator.