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User Agent Parser

Paste a user agent string to identify the browser, operating system, device type, and rendering engine. Or use your own user agent with one click.

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How to use User Agent Parser

  1. Paste a user agent string or click 'Use mine'.
  2. Click Parse to analyze the string.
  3. View browser, OS, device type, and engine details.
  4. Copy any information you need.

What is User Agent Parser?

A user agent string is sent by your browser with every HTTP request. It identifies the browser, version, operating system, and device type. This parser extracts all that information using regex pattern matching.

Click 'Use mine' to auto-fill your own user agent string from navigator.userAgent.

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FAQ

What is a user agent string?
A user agent string is a text identifier sent by browsers in HTTP headers. It contains information about the browser name, version, operating system, and device type.
Can user agents be faked?
Yes — user agent strings can be easily spoofed. This parser shows what the string claims, not necessarily what the actual browser is.

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Author

MW
Marcus Webb"The DevTool Craftsman"

Full-Stack Developer & Tools Architect

Marcus has been writing code since the dial-up era. He has contributed to open-source developer tools, built CI/CD pipelines for startups, and debugged production incidents at 3 AM more times than he would like to admit. His philosophy is that the best developer tool is the one that gets out of your way, and he writes about practical tooling that helps teams ship faster with fewer headaches.

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