What is My User Agent

Benefits of the User Agent Checker

• Displays the complete, unmodified user agent string exactly as your browser sends it — no truncation or reformatting.
• Automatically parses the string into readable components: browser name, version number, rendering engine, OS, and device category.
• Instantly reveals whether your browser is spoofing its identity or running in a legacy compatibility mode.
• Completely free with zero configuration — results appear the moment the page loads, with no form to fill out.
• Makes it easy to compare user agents across different browsers and devices side by side.

Use cases for Checking Your User Agent

• Responsive design testing: confirm that your browser's device emulation mode in DevTools is reporting the correct mobile user agent to the server.
• Bot and scraper debugging: verify the user agent your script is sending so you can adjust it to avoid being blocked by anti-scraping rules.
• Compatibility mode detection: identify when Edge or Internet Explorer is masquerading as an older browser version and causing layout bugs.
• Remote technical support: users can paste their user agent string into a support ticket so engineers can instantly understand the client environment.
• Security research: analyze anomalous user agent patterns to distinguish legitimate browsers from automated headless clients.
• Server-side device detection: validate that your backend logic correctly identifies desktops, tablets, and phones based on the user agent.

How to Use the User Agent Checker

1. Open the tool page — your user agent is detected and displayed automatically the instant the page finishes loading, with no input required.
2. Review the parsed breakdown showing browser name, version, operating system, and whether the device is classified as mobile, tablet, or desktop.
3. Click the Copy button to copy the raw user agent string to your clipboard for use in bug reports, API headers, or further analysis.
4. To check a different device, simply open this page on that device — the tool always reflects the browser making the current request.

Frequently asked questions

What is a user agent? A user agent is a text string that your browser or app automatically includes in every HTTP request header, identifying the software, version, and operating system making the request so servers can tailor their responses.

Can I change my user agent? Yes. Browsers like Chrome and Firefox let you override the user agent in their developer tools, and many browser extensions offer this feature. Changing it can cause websites to serve a different layout or content, since they use the user agent for device detection.

Does this tool store my user agent? No. The user agent string is read directly from your browser request and displayed only to you. Nothing is logged or stored on the server.

Why does my user agent mention multiple browsers? This is a quirk of web history. Most modern browsers include legacy tokens such as Mozilla/5.0 or AppleWebKit to ensure older servers do not reject the connection — even though those browsers are entirely different products.