User Agent Parser
Parse user agent strings to identify browser, OS, device type, and rendering engine. Automatically detects your current browser on load.
How to Use the User Agent Parser
- Your current browser's user agent is automatically detected and parsed on load.
- To analyze a different user agent, paste it into the input field.
- Review the parsed information: browser, OS, device type, and engine.
- Use the copy button to save the parsed results.
About User Agent Parser
A user agent string is a text identifier sent by web browsers and HTTP clients to servers with every request. It typically contains information about the browser name and version, operating system, device type, and rendering engine. User agent parsing is useful for analytics, debugging browser-specific issues, detecting automated bots, and understanding client capabilities. This tool uses regex-based pattern matching to identify major browsers (Chrome, Firefox, Safari, Edge, Opera), operating systems (Windows, macOS, Linux, Android, iOS), device types (desktop, mobile, tablet), and rendering engines (Blink, Gecko, WebKit, Trident). All parsing happens client-side in your browser.
Frequently Asked Questions
User agent strings evolved over decades with browsers adding compatibility tokens from older browsers. Chrome, for example, includes Mozilla, AppleWebKit, and Safari tokens for backward compatibility with server-side detection scripts.
Yes, user agents can be easily spoofed through browser extensions or developer tools. They should never be relied upon for security purposes. Use them only for analytics and compatibility purposes.
A rendering engine is the core component that converts HTML, CSS, and JavaScript into the visual display. Blink powers Chrome and Edge, Gecko powers Firefox, and WebKit powers Safari.