See the full user agent string your browser sends to every website — parsed into browser, version, OS, engine and device type. Paste any user agent string to analyse it.
Every request your browser makes includes a User-Agent header describing the browser, its version, the operating system and the device. Websites use it to serve the right layout or download, to detect bots, and in their analytics. This tool shows the exact string your browser sends and what it means.
A typical Chrome string starts with Mozilla/5.0 and mentions AppleWebKit, KHTML, Gecko and Safari, even though Chrome is none of those. Each new browser copied the markers of older ones so that websites checking for them would not lock it out, and the clutter stuck. The useful parts are usually the browser name and version near the end and the platform in brackets.
Because detailed strings help fingerprint people, Chrome and other Chromium-based browsers now freeze parts of the string, for example reporting a fixed Windows version, and offer User-Agent Client Hints instead, which sites have to request explicitly. So the string may not show your exact operating system version.