User Agent Info
Detect and analyze your browser's user agent string — browser, version, operating system and platform.
Your User Agent String:
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Your Referrer Page:
What is a user agent?
A user agent is a short string that web browsers and other applications send to identify themselves to web servers. It contains information about the browser, its version and the operating system.
Why is the user agent important?
User agent strings help web developers optimize sites for different browsers and devices — for example serving a mobile-optimized version to smartphones and a full desktop version to computers. They're also used in analytics, debugging and compatibility testing.
Common uses of user agent information
- Responsive web design and mobile detection
- Browser compatibility testing
- Analytics and visitor tracking
- Security and bot detection
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