What Is My Browser

What Is My Browser — Detect Your Browser, OS & Device Info

Every web browser sends information about itself to every website it visits — browser name and version, operating system, device type, screen resolution, and more. This free What Is My Browser tool shows you exactly what information your browser reveals, making it useful for technical support, privacy awareness, web development testing, and compatibility debugging.

The tool detects your browser automatically when you visit the page. No input needed — all the information is collected from your browser's built-in JavaScript APIs and the user agent string your browser sends with every request. Results display instantly.

Web developers use browser detection to test cross-browser compatibility, reproduce user-reported bugs on specific browser/OS combinations, and verify that feature detection logic correctly identifies browser capabilities. Support teams ask users "what is your browser and version?" — this tool answers that question completely in one click.

Detected Information

Browser. Name (Chrome, Firefox, Safari, Edge, Opera), version number, and rendering engine (Blink, Gecko, WebKit).

Operating System. OS name (Windows, macOS, iOS, Android, Linux) and version. Combined with browser version, this identifies the exact platform configuration.

Device. Desktop, tablet, or mobile device type. Screen resolution (physical pixels) and viewport size (CSS pixels available to the page).

Capabilities. JavaScript enabled, cookies enabled, touch support, color depth, pixel ratio (for Retina/HiDPI displays), and browser language preference.

Related Tools

• Screen Resolution Simulator – Test websites at your detected screen resolution.
• My IP Address – See your public IP address and location information.
• HTTP Headers Checker – See all headers your browser sends to servers.

Frequently Asked Questions