User Agent Parser
Parse browser and system information from user agent strings. Auto-detects your current browser or analyze any user agent string manually.
About User Agent Parser
Parse and analyze User Agent strings to extract detailed information about browsers, operating systems, and devices. The User Agent string is sent by your browser with every web request and contains information about your browser type, version, operating system, and device capabilities.
How to Use
- Click Detect My Browser to automatically detect your current browser's information.
- Or paste any user agent string in the text area and click Parse UA String.
- View parsed information including browser name/version, operating system, and device type.
- Check browser capabilities like cookies, local storage, and touch support.
- View the full user agent string and copy it if needed.
- Click Copy Parsed Info to copy all detected information.
Frequently Asked Questions
What is a User Agent string?
A User Agent string is a text identifier that your web browser sends to websites with every request. It contains information about your browser type, version, operating system, and sometimes device details. Websites use this information to optimize content delivery and compatibility.
Can I change my User Agent?
Yes, most browsers allow you to change or "spoof" your User Agent string through developer tools or extensions. This can be useful for testing websites or accessing content designed for different browsers. However, some websites may block requests with modified User Agents.
Is User Agent reduction affecting detection?
Yes, modern browsers like Chrome are reducing the amount of information in User Agent strings for privacy reasons. Newer APIs like Client Hints are being introduced to replace some functionality. This may cause detection to be less specific for newer browser versions.
Why do some detections show as "Unknown"?
Detection relies on pattern matching against known User Agent formats. New browsers, rare devices, or significantly modified User Agent strings may not match known patterns. Additionally, privacy-focused browsers may intentionally omit identifying information.
Can websites track me using my User Agent?
User Agent strings contribute to browser fingerprinting, which can be used for tracking. However, many users share similar User Agent strings, so it's not a unique identifier on its own. Combined with other data points, it can help distinguish users. Modern browsers are taking steps to reduce this tracking vector.