User Agent Parser
Auto-detect your user agent string and parse it into browser name, version, operating system, and device type.
About User Agent Parser
Our free User Agent Parser decodes the complex user agent string that your browser sends with every web request. The user agent identifies your browser, operating system, device type, and rendering engine — information that websites use to deliver compatible content and track visitor demographics.
User agent strings can be cryptic and difficult to read manually. This parser breaks them down into clear, human-readable components. It automatically detects your current browser's user agent, or you can paste any user agent string to analyze it. This is useful for web developers testing browser compatibility and for understanding what information websites can see about your setup.
Note that user agents can be spoofed or modified by browser extensions and privacy tools. The parsed results reflect what the user agent string claims, which may not always match the actual browser or device being used.
Frequently Asked Questions
Q What is a user agent string?
A user agent string is a text identifier that your browser sends to every website you visit. It contains information about your browser name and version, operating system, device type, and rendering engine. Websites use this information to serve compatible content and track browser usage statistics.
Q Can websites track me through my user agent?
Your user agent alone cannot identify you personally, but it contributes to your browser fingerprint — a collection of technical details that can uniquely identify your browser among millions. For privacy, some browsers and extensions allow you to change or randomize your user agent string.
Q Why does my browser's user agent mention other browsers?
This is due to historical "browser spoofing" for compatibility. Chrome's user agent mentions both Mozilla and Safari because early websites checked for these strings. Chrome includes "Safari" for compatibility with sites that served better content to Safari browsers. This legacy convention persists for backward compatibility.