What Is My Browser
See what your browser reports: user agent, languages, time zone, screen and viewport size, pixel ratio, CPU threads, GPU, colour scheme and motion preferences, ready to paste into a bug report.
Free · No sign-up · Your inputs stay in your browser
This browser
What your browser reports
Reading...
Everything here is read by this page from the browser's own APIs and shown only to you; nothing is logged. These are the details a support ticket usually lacks, and the same ones fingerprinting scripts combine to recognise a browser without cookies, which is why some browsers round or hide them.
About this tool
Method, assumptions, practical next steps, and limits.
What support needs
"It looks broken on my laptop" becomes actionable with the viewport size, the device pixel ratio, the browser version, the zoom level implied by those numbers and preferences such as dark mode or reduced motion. That is what this page collects.
The same data identifies you
Fingerprinting scripts combine exactly these values to recognise a browser without cookies. Browsers increasingly reduce the detail they expose, for example Chrome's reduced user agent string, and the User-Agent Client Hints API moves fine detail behind explicit requests.