Parse and decode User-Agent strings. See browser, OS, and device type instantly—client-side only.
Paste a User-Agent string above, or click "Use my browser" to detect your current browser.
A User-Agent string is sent by browsers and other clients in HTTP requests to identify themselves. It typically includes browser name, version, operating system, and sometimes device type. This tool parses that string so you can see the breakdown without memorizing formats—useful for debugging, analytics, and support.
A User-Agent is a string that browsers and clients send in HTTP headers to identify themselves (browser name, version, OS). This tool parses that string to show browser, OS, and device type.
No. Parsing runs entirely in your browser. No User-Agent data is sent to any server.
Developers use it to debug client detection, support staff to identify visitor browsers, and for analytics. Parsing helps you see what a given UA string means without memorizing formats.
Added Feb 22, 2026
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