What Is My Browser

This browser detection tool instantly reads your User-Agent string and Client Hints to identify your browser name, exact major version, and operating system without requiring downloads.

A User-Agent is a text string that your web browser sends to websites to describe your software environment. A user agent checker parses this string to reveal your browser engine, version, and device type.

Websites and IT support teams check your browser version to troubleshoot display bugs, verify security patch levels, and ensure compatibility with modern web standards.

Compare your detected version number against the latest release from your browser developer. You can also open your browser settings and visit the About page to trigger an automatic update check.

This tool runs real-time client checks to test if cookies and JavaScript are enabled. It writes a temporary test cookie and validates active scripting capabilities directly on your device.

Screen resolution measures the full pixel dimensions of your physical display monitor. Viewport size indicates the active browser window dimensions displaying web page content.

Resizing your window or zooming in updates your live viewport size in CSS pixels, but your browser version, operating system, and screen resolution remain unchanged.

A rendering engine formats HTML, CSS, and web scripts into interactive visual layouts. Common engines include Blink for Google Chrome and Microsoft Edge, WebKit for Apple Safari, and Gecko for Mozilla Firefox.

Yes. This browser diagnostics tool runs entirely on your local machine using standard browser APIs. None of your device specifications, user agent data, or browsing history is stored on remote servers.

Click the Copy Diagnostic Report button in the hero card. The tool places a formatted summary of your browser name, operating system, and screen details directly onto your clipboard for quick sharing.