User Agent Parser

What is a User Agent?

A User Agent (UA) is a string that your browser or app sends with every HTTP request to identify itself to the server. It typically contains information about the browser name and version, the operating system and version, the rendering engine, and the device type. For example, Chrome on Windows might send: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36. Servers use this string for analytics, content negotiation, and compatibility detection. Developers use UA parsers to understand which browsers and devices visit their sites.

How to Use the User Agent Parser

The tool automatically detects and parses your current browser's User Agent on load.
Click Detect My UA at any time to re-detect your current browser.
Paste any User Agent string into the input field — it parses instantly as you type.
Click Example to load a sample iPhone Safari User Agent string.
The results show Browser, OS, Device type, and Rendering Engine in cards and a detail table.

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