What Browser Am I Using? — Browser & Device Detector
This tool instantly tells you everything about your browser and device. It shows your browser name and version, what operating system you are running, whether you are on a phone or a desktop, your screen size, and other settings like language and cookies. This information is useful when you need to tell a website's support team what browser you are using, or when you want to check if your browser is up to date. There is nothing to click. Your details appear automatically the moment the page loads.
Your browser details are detected automatically and shown below.
Full User Agent String:
Frequently Asked Questions
How do I find out what browser version I am using?
The easiest way is to use a browser detection tool like this one. Alternatively, in Chrome go to the three-dot menu and choose Help > About Google Chrome. In Firefox, click the menu button and choose Help > About Firefox. Your version number will be shown right on that page.
Why do websites ask what browser I am using?
Different browsers handle web code in slightly different ways. Knowing your browser helps a support team figure out why something looks broken for you but works fine for other people. Older browser versions also may not support newer web features, which can cause display or login issues.
How do I update my browser to the latest version?
Most modern browsers update automatically in the background. To force an update in Chrome, go to the three-dot menu, Help > About Google Chrome, and click Update if one is available. For Firefox, go to the menu, Help > About Firefox. Safari on iPhone and Mac updates through your device's system software update.
What is a user agent string?
A user agent is a short piece of text your browser sends to every website you visit. It tells the site what browser, version, and operating system you are using. Websites use this information to serve the right layout and features for your particular device and browser combination.
Is my browser information private?
Your browser type and operating system are shared with every website you visit automatically. This is not personally identifiable information on its own, but combined with other signals it can be used for browser fingerprinting. This tool only reads that information locally and does not send anything to a server.
What is browser fingerprinting?
Browser fingerprinting identifies you by combining multiple data points — browser type, OS, screen resolution, installed fonts, time zone, and more. Even without cookies, these combined details form a fingerprint unique enough to recognize you across websites. This tool shows you exactly what data your browser exposes.
How does a website know what browser I am using?
Every browser sends a User-Agent string with each HTTP request, identifying the browser name, version, and operating system. Websites read this string to serve compatible layouts and to collect analytics on which browsers their visitors use. You can see your full User-Agent string at the bottom of this page.
Does my browser version affect security?
Yes. Outdated browsers miss security patches, leaving you vulnerable to known exploits. Chrome and Firefox update automatically by default. Always keep your browser current, especially if you use online banking, email, or handle sensitive data — most drive-by download attacks target old browser versions.
How It Works
This tool reads your browser's built-in navigator JavaScript object — a read-only API that exposes the User-Agent string, platform, language, cookie support, touch capability, and CPU core count. Nothing is sent to a server; all data is read locally from your own browser session.
Why Browser Info Matters
Web developers use browser data to debug layout inconsistencies, test cross-browser compatibility, and understand their audience. Support teams ask for browser version to reproduce bugs. Analytics platforms track browser share to decide which features to build and which legacy support to drop.
User Agent Strings
The User-Agent string is sent with every HTTP request your browser makes. It identifies your browser, engine, OS, and version. Websites can use it to serve different content or block older browsers. Privacy-focused browsers deliberately send generic or spoofed User-Agent strings to reduce trackability.
When to Use This
Use when a website says your browser is unsupported and you want to verify what it detects, when a developer needs your browser details to reproduce a bug, or when you want to confirm that a VPN or privacy extension is or is not changing what your browser reports.
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