User Agent Parser
Parse and analyze user agent strings. Identify browser, OS, device, and engine information.
What is a User Agent string?
A User Agent is a string of text that your browser sends to websites identifying your browser, operating system, device type, and other details. Websites use this information to optimize content for your device.
How to parse a User Agent?
Paste a User Agent string into the input field and click "Parse" to see detailed information about the browser, operating system, device, and rendering engine. Click "Use My Browser" to analyze your current browser's User Agent.
Why analyze User Agents?
• Debugging website compatibility issues • Understanding device and browser detection • Analytics and traffic analysis • Testing responsive design implementations • Troubleshooting browser-specific problems • Understanding visitor technology stack
Example
Parsing a Chrome-on-Windows user agent string reveals the browser name and version, OS, and rendering engine in a structured breakdown.
Common Use Cases
- Debugging why a page renders differently on a specific browser or device.
- Analyzing visitor browser/OS data pulled from server logs.
FAQs
Can a user agent string be spoofed?
Yes — user agent strings are self-reported by the browser and can be changed by the user or developer tools, so they shouldn't be relied on for security decisions.