What Is My Browser? Free Browser and Version Checker

How to Check What Browser You’re Using

1. Open this page in the browser you want to check

   The result describes the browser that loaded the page. If you use more than one browser, open the page in each of them.

2. Read the name and version

   The large line shows the browser’s name and version number. Chromium browsers that support Client Hints report the full four-part version, such as 154.0.8037.58.

3. Check the “up to date” line

   We compare your version with the current stable release in our table. Green means current, amber means one version behind while an update rolls out, and red means you should update.

4. Look at the detection confidence

   Some browsers, such as Vivaldi and Arc, send the same identity as Chrome. The confidence note tells you how sure the result is and why.

5. Copy the details if someone asked for them

   Press “Copy all details” to copy a plain-text summary, or “Copy user agent” for the raw string. Paste it into a support ticket or bug report.

How This Browser Checker Works, and What It Can See

Everything happens inside your browser. The page reads a few values your browser already exposes to every website, turns them into plain words and shows them to you. Nothing is sent back to BelayTab or to anyone else, and the page doesn’t store the result.

The first value is the user-agent string, a line of text your browser sends with every request and also exposes to scripts as navigator.userAgent. It’s the same string any website you visit receives. The second source, available in Chrome, Edge, Opera, Brave and other Chromium browsers, is User-Agent Client Hints through navigator.userAgentData. Client Hints name the browser brand directly and, when asked, return the full version and the operating system version. Firefox and Safari don’t support Client Hints, so for them the page relies on the user-agent string alone.

The page also reads navigator.cookieEnabled to tell you whether cookies are allowed, checks whether the device has a touch screen (to spot an iPad that is pretending to be a Mac) and, for Arc, looks for a style variable Arc adds to every page. The “up to date” check compares your version with a small table that is part of this page. It doesn’t look anything up online while you watch.

• Read: the user-agent string, Client Hints (brand, full version, platform and platform version), cookie setting and touch support.
• Not read: your IP address, location, history, other tabs, extensions or anything you’ve typed.
• Not sent: the result stays on this page. There is no analytics call with your browser details.

What Browser Am I Using? What a User-Agent String Tells You

A web browser is the app you use to open websites. The common ones on computers are Google Chrome, Microsoft Edge, Mozilla Firefox, Safari, Brave, Opera, Vivaldi and Arc. On phones the defaults are Safari on iPhone and iPad and Chrome or Samsung Internet on Android. If you aren’t sure which one you have open, this page names it at the top.

Websites find out which browser you use from the user-agent string. It looks messy because of history: in the 1990s sites served better pages to Netscape (“Mozilla”), so every browser since has claimed to be Mozilla, and later claimed to be “like Gecko” and “Safari” too, so that sites wouldn’t lock them out. The real information is in the last tokens. A typical Chrome string on Windows today is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/154.0.0.0 Safari/537.36.

Browsers have also started hiding detail on purpose, to make you harder to fingerprint. Chrome finished its User-Agent Reduction in Chrome 113: the minor version is always 0.0.0, Windows is always “Windows NT 10.0” (so Windows 11 looks like Windows 10), macOS is always 10_15_7 and Android is always “Android 10; K”. Safari has reported macOS as 10_15_7 since 2020, and Firefox caps the macOS version at 10.15. The accurate numbers now come from Client Hints, where the browser supports them. That is why this page shows “Windows 11” in Chrome or Edge but only “Windows” in Firefox.

How to Check Your Browser Version in Chrome, Edge, Firefox, Safari, Brave and Opera

Every browser has an About page that shows its exact version and checks for updates when you open it. This table lists the quickest way into each one. You can paste the internal address into the address bar, or use the menu path if you prefer clicking. The About page is the most reliable browser version check there is, because it reads the version from the browser itself rather than from what the browser tells websites.

If a page like this one says your browser is out of date but the About page says it’s up to date, trust the About page. Updates roll out to a percentage of users over several days, and a fixed table like ours can be a day or two ahead of your rollout.

Latest Browser Versions (Updated Monthly)

These are the current stable desktop releases we compare your browser against, checked on September 24, 2026. Each row comes from the vendor’s own release channel. Chrome moved to a new major version every two weeks starting with Chrome 153 on September 8, 2026, so the latest Chrome version changes often; Firefox’s last three major releases also arrived two weeks apart. Mobile releases usually land within a few days of desktop.

We update this table monthly, and the “up to date” check above uses it. Last checked September 24, 2026. Between checks, a browser can ship a newer version than the one listed, and the checker will then call yours “newer than the stable release”.

Chromium vs Gecko vs WebKit: Which Engine Is Your Browser?

The engine is the part of a browser that turns HTML, CSS and JavaScript into the page you see. There are only three major engines left, and nearly every browser is built on one of them. Knowing yours explains why two browsers can behave the same on one site and differently on another, and which extension store you can use.

Blink is the engine in Chromium, the open-source project behind Chrome. Edge, Brave, Opera, Vivaldi, Arc and Samsung Internet all build on Chromium, so they share Chrome’s rendering, most of its bugs and its extension format. Gecko is Mozilla’s engine and powers Firefox and browsers built from it. WebKit is Apple’s engine and powers Safari.

On iPhone and iPad the picture is different. Apple has long required every iOS browser to use WebKit, so Chrome, Edge and Firefox on iOS are WebKit browsers with their own interface on top. Since iOS 17.4, apps in the EU may ship their own engine, but the versions most people install still use WebKit.

Why Do Brave, Arc and Vivaldi Say “Chrome”?

Because saying “Chrome” is the easiest way not to be blocked. Plenty of sites check the user-agent string and refuse, or show an “unsupported browser” warning, when they don’t recognise the name. Smaller Chromium browsers learned that the safest identity is the one every site already supports.

Brave sends a user-agent string identical to Chrome’s. It does add “Brave” to its Client Hints brand list, except on sites that are known to treat Brave users badly, and it exposes a navigator.brave object that this page checks. That is why the checker can usually name Brave, and why it shows Brave’s Chromium version (such as 154) rather than Brave’s own number (such as 1.96), which Brave doesn’t share with websites.

Vivaldi removed its name from the user-agent string in version 2.10, in late 2019, after Google services, WhatsApp Web and Microsoft Teams treated it as an unsupported browser. Current Vivaldi sends Chrome’s string and Chrome’s Client Hints brands, so this page will usually call it Google Chrome. The version shown is the Chromium version Vivaldi is built on. Arc also sends Chrome’s identity; we recognise it from a style variable Arc adds to pages, which works on most sites but isn’t an official signal.

If the checker says Chrome and you know you use Vivaldi or another Chromium browser, the result isn’t wrong so much as incomplete: the engine and the Chromium version are accurate, and only the brand name is hidden. Open the browser’s About page for its own version number.

Opera and Edge are the exceptions. Both add their own token to the user-agent string (OPR/ and Edg/) and their own Client Hints brand, so they are detected with high confidence.

Why Your Browser Version Matters

Modern browsers update themselves, so you rarely need the version number. It matters in these situations, and in each one the first question is “what browser and version are you on?”

• Security. Each Chrome release fixes security bugs, and Google now ships a new version every two weeks. A browser several versions behind is missing fixes for flaws that are already public.
• Extensions. Extensions declare a minimum browser version. When one won’t install or stops working after an update, the version number is the first clue. Chrome’s move to Manifest V3, for example, turned off older extensions in recent versions.
• A site says your browser isn’t supported. Banks, video-call tools and government sites often check the version. If yours is current, the site is probably reading an old or reduced user-agent string; try the site’s recommended browser or contact the site.
• Support tickets and bug reports. Developers need the browser, version and operating system to reproduce a problem. “Copy all details” gives them all three in one paste.
• Work-managed computers. If your company manages updates, the About page may say “managed by your organization” and stay a version or two behind. That’s a policy choice, not a fault.
• Stuck updates. If the About page keeps offering the same update after a restart, the updater itself may be broken. Downloading the installer from the vendor’s site usually fixes it without touching your bookmarks or tabs.

How Do I Update My Browser?

Most browsers update in the background and apply the update the next time you restart them. To update now, open the About page listed above. Chrome, Edge, Brave, Opera and Vivaldi check for an update as soon as the page opens, download it, and then show a Relaunch or Restart button. Firefox does the same from its About window. Arc checks from its menu.

Safari is different because it updates with the operating system. On a Mac, open System Settings, then General, then Software Update. On iPhone and iPad, open Settings, then General, then Software Update. Apple often offers the newest Safari as a separate update to Macs that can’t install the newest macOS, so check Software Update even on an older Mac.

Relaunching a browser closes every window. Chrome, Edge and Firefox reopen your tabs after an update restart, but a crash during the restart, a profile problem or a stray setting can lose them. Saving your open tabs before you update takes a few seconds and removes the worry.

Ways to Check Browser Version, Compared

There are several ways to answer “what browser am I using” and “what version is it”. They differ in how much they can see.

Limits and Troubleshooting

A browser can report anything it likes, and extensions, privacy settings and developer tools can all change what it reports. The checker shows what your browser tells websites, which is exactly what a site you visit sees, but not always what is installed.

• The version ends in .0.0.0. Your browser uses a reduced user-agent string and didn’t offer the full version through Client Hints. The major number is still right.
• It says Windows, not Windows 11. Firefox and Safari can’t report Windows 11 separately, because the user-agent string says “Windows NT 10.0” on both versions. Chromium browsers report it through Client Hints.
• It says Mac on my iPad. iPadOS asks for desktop sites by default and sends a Mac user-agent string. The checker spots the touch screen and says so.
• It says Chrome, but I use Vivaldi or another Chromium browser. See the section above: these browsers send Chrome’s identity on purpose.
• The version looks wrong in Firefox. The resist-fingerprinting setting and some privacy extensions report a generic version. Open about:support to see the real one.
• It says my browser is out of date right after I updated. Restart the browser; the update applies on relaunch. If it still looks old, your rollout may not include the newest release yet.
• Cookies show as disabled. You’ve blocked cookies for all sites, or for this one. Sites that need sign-in won’t work until you allow them.

The “up to date” check uses a static table that we update monthly. If a new version shipped after our last check, the checker may call your browser “newer than the stable release”. That’s fine.