The short answer
Your browser identifies itself through request headers and browser APIs. The live result above reads those signals locally and translates them into a recognizable browser name and visible version.
How browser detection works
Browsers send a user-agent string when requesting a web page. Modern Chromium browsers can also expose structured brand information through User-Agent Client Hints. This checker reads both, prefers the more specific signal and shows the original user agent so you can verify the result.
The detected version is usually the major version exposed to websites. Privacy protections may reduce or freeze some version details, so the value is useful for compatibility checks but is not a complete software inventory.
Why websites need to know your browser
Browser identification helps websites choose compatible video formats, layout features, authentication flows and troubleshooting instructions. Support teams also use it to reproduce errors that affect one browser family or operating system.
The same signal can contribute to browser fingerprinting when it is combined and stored with screen, language, time-zone and graphics information. A browser name alone normally does not identify a person.
What if the result looks wrong?
Some browsers are built on Chromium and intentionally resemble Chrome for compatibility. Enterprise policies, privacy extensions and embedded in-app browsers can also alter the user agent. Treat an unexpected result as a clue, then confirm the exact product in the browser’s About or Help screen.