💻 Free Tool
User Agent Checker
See your browser's full user agent string and what it reveals about your device and browser.
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Browser
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OS
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Device Type
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Language
About User Agents
What is a user agent?
A user agent is a string your browser sends to every website you visit. It identifies your browser name, version, operating system, and device type. Websites use this to serve optimized content for your device.
Can websites track me using my user agent?
Yes, to a degree. Your user agent is one of many signals used in browser fingerprinting. Combined with other data like screen resolution and installed fonts, it can uniquely identify your browser even without cookies.