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About this tool
Find out which browser, version, engine and operating system you use, check 40+ supported features and get update steps for your browser.
The What Is My Browser tells you which browser you are using and what it can do. It parses your user-agent string and, in Chromium browsers, the more precise User-Agent Client Hints, which reveal the full version number, Windows 10 versus 11, device model and CPU architecture. A checklist then tests more than 40 capabilities directly — cookies, storage, WebGL and your GPU renderer, WebGPU, WebAssembly, service workers, touch, languages, time zone, Do Not Track, dark mode and reduced-motion preferences. You also get an estimate of whether your version is current, step-by-step update instructions, and a one-click report for support tickets. Nothing is sent to a server.
Open What Is My Browser on AltFTool — it loads instantly in your browser.
Open the page: the You are using panel shows your browser name and major version, the operating system, and tiles for Full version, Engine, Device type, Model and Architecture.
Read the update box: it estimates whether your version is current from the release schedule and lists the How to update menu path for your browser.
Scroll to the Feature checklist and use the All, Supported and Not supported filters to see WebGL, WebGPU, cookies, storage, touch and privacy settings.
Press Copy full report or Download JSON to share the results, or paste a string into Parse another user agent to decode it.
Many browsers freeze parts of the user agent: Windows 11 still says “Windows NT 10.0” and macOS is stuck at 10.15.7. Client hints are read where available to report the real version and platform.
Each item in the checklist is tested in your browser at that moment, so it reflects disabled cookies, blocked storage, a missing GPU driver or a privacy setting — not just the browser's name.
Your version is compared with the browser's published release cadence, and the exact menu path to update Chrome, Edge, Firefox, Safari, Opera, Brave or Samsung Internet is shown.
Copy full report gives a plain-text summary of everything on the page; Download JSON saves the same data in a structured file.
| Browser | Engine | Major release cadence |
|---|---|---|
| Google Chrome | Blink | About every 4 weeks |
| Microsoft Edge | Blink | About every 4 weeks, following Chromium |
| Mozilla Firefox | Gecko | About every 4 weeks; ESR yearly |
| Apple Safari | WebKit | Major version yearly (autumn), point releases in between |
| Opera | Blink | About every 4–6 weeks |
| Brave | Blink | Follows Chromium, about every 4 weeks |
| Samsung Internet | Blink | A few major versions per year |
| Any browser on iPhone/iPad | WebKit (in most regions) | Tied to iOS / iPadOS updates |
Cadences are typical and occasionally stretch around holidays; check the browser's About page for the definitive latest version.
The large heading at the top of this page names your browser and its major version, detected from your user-agent string and, where supported, User-Agent Client Hints. Browsers built on Chromium, such as Edge, Opera, Brave and Vivaldi, are told apart from Chrome by their own brand tokens.
This page shows the full version number under Full version. You can also check inside the browser: in Chrome or Edge open the menu › Help › About; in Firefox open ☰ › Help › About Firefox; in Safari choose Safari › About Safari on a Mac, or check the iOS version on iPhone, since Safari updates with the system.
This page estimates it from the browser's release cadence — Chrome, Edge and Firefox ship a new major version roughly every four weeks, and Safari's major version changes each autumn. It does not contact any server, so treat the result as a guide and confirm with the browser's About page, which checks for updates directly.
A user agent is a text string your browser sends with every web request and exposes to scripts. It names the browser, its rendering engine and the operating system, for example “Chrome/142 … Windows NT 10.0”. Because of decades of compatibility hacks it mentions several browsers at once, which is why it needs careful parsing.
Browsers froze the Windows version in the user agent at “Windows NT 10.0”, so the string alone cannot tell 10 from 11. Chromium browsers expose the real platform version through client hints; values of 13 or higher mean Windows 11. Firefox does not offer client hints, so this page shows “10 or 11”.
Chrome, Edge, Opera, Brave, Vivaldi and Samsung Internet use Blink. Firefox uses Gecko. Safari uses WebKit — and on iPhone and iPad, most other browsers also use WebKit under the hood because of platform rules, so Chrome on iOS renders like Safari. The Engine tile shows yours.
Look at the Graphics group in the feature checklist. WebGL and WebGL 2 are tested by creating a context, and the GPU renderer line names your graphics hardware when the browser allows it. WebGPU shows the adapter vendor and architecture if a compatible GPU is available. A “Not supported” result can mean outdated drivers or hardware acceleration switched off.
The Basics group shows Cookies, Local storage and Session storage. If any reads “Not supported”, your browser or a privacy extension is blocking them, which can break sign-ins and shopping carts. Allow cookies for the site in your browser's privacy settings, or try a private window to rule out extensions.
Most of it, yes: every site can read your user agent, screen size, languages, time zone and many of these features with the same JavaScript this page uses. This page simply displays them and sends nothing anywhere. Browsers are gradually reducing the detail in the user agent to limit fingerprinting.
Both are signals your browser can send asking sites not to track or sell your data. Do Not Track is an older header that most sites ignore. Global Privacy Control is newer and has legal weight in some regions, such as California. The privacy group shows whether either is switched on.