User Agent Parser
Parse User-Agent strings to detect OS, browser, device type, and version.
User Agent String
Parsed Result
Enter a User-Agent string to parse
Frequently Asked Questions
What information does a User-Agent string contain?
A User-Agent string typically includes the browser name and version, the rendering engine, the operating system and version, and sometimes device type information. For example: "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36" indicates Chrome on Windows 64-bit.
Why does my User-Agent show Chrome but I'm using Edge?
Microsoft Edge is built on the Chromium engine, so its User-Agent includes "Chrome" in the string. The tool detects Edge by looking for "Edg/" which appears before Chrome in the string. Similar issues occur with Opera (which also uses Chromium) and other browsers that wrap alternative engines.
Is my data sent to a server?
No. All parsing happens locally in your browser using JavaScript pattern matching. The tool examines your User-Agent string entirely on your device to extract browser, OS, and device information. No data is sent to any external service.
How do I find my current User-Agent string?
Click the "Use My UA" button on the tool, and it will automatically populate the input with your browser's full User-Agent string. You can also find it in browser developer tools under Network conditions or in the console by typing navigator.userAgent.
Can User-Agent strings be faked?
Yes, browsers and browser extensions allow User-Agent spoofing. Some websites serve different content based on User-Agent detection. Security tools analyze User-Agent patterns to identify bots and scrapers, though sophisticated bots often mimic real browser User-Agent strings to avoid detection.
What is browser fingerprinting?
Browser fingerprinting uses various signals including User-Agent, installed plugins, screen resolution, fonts, and canvas rendering to identify browsers without cookies. Modern browsers are reducing exposed information to limit fingerprinting surface area. Understanding User-Agent strings helps you recognize how websites identify visitors.