Open page. Auto-detects your browser user agent string. Parsed to show browser, OS, device, engine.
See what browsers report to websites. Essential for compatibility testing.
Text identifier your browser sends to sites.
Every site receives it automatically.
Most browsers allow override in dev tools.
Sites use for content compatibility, analytics.
Find your browser's User Agent string with the Toolzie User Agent Finder. See your browser name, version, operating system, device type, and rendering engine — instantly detected from your current browser.
A User Agent (UA) is a string your browser sends to every website you visit, identifying your browser type, version, and operating system.
Developers use UA strings to test browser compatibility, report bugs, and configure server-side analytics.
Yes — User Agent strings are one of many signals used in browser fingerprinting. Using a VPN or privacy browser can help reduce tracking.
Browser developer tools allow you to override your User Agent for testing. Chrome DevTools > Network conditions > User Agent.