User-Agent Parser
Parse browser and OS information from User-Agent strings.
About User Agent Parser
Parse and analyze User-Agent strings to identify browser, OS version, rendering engine, and device type. Free online tool. This page is part of UtilsNest's Developer Tools, so you can move between related workflows without leaving the browser.
How to use it
- Enter or adjust the values, text, or file input needed for User Agent Parser.
- Review the generated result instantly and compare outputs until the result fits your use case.
- Copy, download, or continue to a related developer tools workflow if you need the next step.
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Open Developer ToolsFrequently Asked Questions
What is a User-Agent string?
A User-Agent is a string browsers send in HTTP headers identifying themselves. It contains browser name, version, OS, and layout engine.
Where do I find my User-Agent string?
Open this tool to see your browser's UA string automatically. You can also find it in browser Dev Tools under Network → Headers.