What Is My Browser

Everything is detected the moment the page opens, so there is nothing to install or configure.

1. Read the large Your browser box, which shows the browser name and version, with your operating system and device type beneath it.
2. Scan the list for Rendering engine, Operating system, Device type, Language, Time zone, Cookies enabled, JavaScript and Online.
3. Check the hardware lines, CPU cores (reported), Device memory (reported) and Screen, and the Do Not Track setting.
4. Find the User agent line at the bottom, the full text your browser sends to every site.
5. Press Copy details to copy the whole list as text, then paste it into a support ticket or bug report. Press Refresh to read the values again after a change.

The readings come from scripts running on your device and are displayed only to you.

Every browser identifies itself with a user agent string, a line of text listing the browser family, version, engine and system. The page reads that string, plus the newer user agent data that Chromium browsers offer, and a few properties such as language and time zone, and then turns them into labels. The engine line reports Blink for Chrome and Edge, Gecko for Firefox and WebKit for Safari.

The string is a record of history, not a precise report, so some results need care:

• Windows 10 or 11. Both versions send the same system token, so the page cannot tell them apart and says so.
• macOS 10.15.7. Browsers froze the macOS version in the string at 10.15.7 for privacy, so a current Mac can still show that number.
• Chromium relatives. Edge, Opera and other browsers built on Chromium contain the word Chrome. The page checks for Edge and Opera first and uses user agent data where it exists.
• Browsers on iPhone and iPad. Every browser there uses Apple's engine, and some, including Chrome and Firefox, send strings the page does not recognise, so they can appear as Unknown. An iPad in desktop mode reports itself as a Mac.
• Spoofing. Privacy extensions and developer tools can change the string on purpose.

When the result looks wrong, your browser's About page is the final word on its own name and version.

It helps to know how to read a string. Take Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36. The opening Mozilla/5.0 is a historic token every browser still sends, Windows NT 10.0 names the system, AppleWebKit and Safari are kept for compatibility, and only Chrome/130 is the actual browser and major version. The trailing 0.0.0 is deliberate, because Chrome reduced the detail it sends.

Several rows are less reliable than they look. JavaScript always reads Enabled, because the page could not run otherwise. Online says whether the device has a network connection, not whether the internet works. CPU cores and Device memory are values the browser chooses to report: memory is capped at a few gigabytes and some browsers hide it, so a dash is normal. Do Not Track shows a preference that most sites ignore. Time zone is a place name such as Europe/London rather than an offset; the time zone converter turns it into a clock time.

Where the information is useful:

• Support tickets. The same page can behave differently across browsers and versions, so a copied list saves a round of questions.
• Compatibility. Chrome and Firefox each release a new major version roughly every four weeks, so check yours against what a banking site or web app supports.
• Troubleshooting. Confirm cookies are enabled before assuming a site is broken.
• Developers. Verify what a test device or in-app browser really reports, and extract a version with the regex tester.

Pair this page with the screen resolution checker for display details and the IP address page for your network address. As with every web page, your browser sends its user agent when it requests the page; this tool only displays it.