What Is My User Agent

A user agent string is the identifier your browser sends to web servers with every single request, communicating which browser, version, rendering engine, and operating system you are using. Web developers use user agent data to test server-side redirects, verify Googlebot simulation behaviour, debug browser-specific rendering issues, and configure server rules. The What Is My User Agent tool displays your complete, exact user agent string the moment the page loads — no input, no delay.

How It Works

Navigate to the What Is My User Agent tool page. Your browser's full user agent string is detected and displayed automatically. You can copy the string directly from the page for use in development, testing, or server configuration work.

Key Features

• Automatic user agent detection on page load — zero input required
• Displays complete, unmodified user agent string
• Clearly formatted for easy copying and documentation
• Works across all browsers and operating systems
• Free with instant real-time detection

Benefits for Users

• Retrieve your user agent string for server-side redirect testing
• Simulate or compare user agent strings for browser-specific configurations
• Document your browser environment for development or debugging sessions
• Verify that Googlebot simulation tools are sending correct user agents
• Support cross-browser compatibility testing workflows

Use Cases

• Testing server-side redirect logic based on user agent type
• Verifying how a website's server responds to different browser user agents
• Debugging browser-specific rendering or functionality issues
• Setting up user-agent-based rules in .htaccess or server configurations
• Documenting user agent data for technical bug reports or developer handoff

Related Tools

Related: What Is My Browser · Get HTTP Headers · HTTP Status Code Checker