User-Agent Parser
Browser
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Browser Version
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Operating System
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Device Type
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Rendering Engine
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Is Mobile
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What a user-agent string is
A user-agent string is a piece of text that browsers automatically send to every website they visit, identifying the browser, its version, the operating system, and sometimes device details. Websites use this to serve appropriate content or track basic analytics.
Paste any user-agent string to break it down, or click the button to instantly parse your own browser's string.
Why this is useful
Developers use this to debug browser-specific issues, verify device targeting logic, or understand what a particular visitor's browser reported. Since user-agent strings can be spoofed or customized, they should be treated as a hint rather than a guaranteed fact about the visitor's actual setup.