Browser Fingerprint Audit
See what any website can read about your browser — user agent, screen, GPU, fonts, canvas — without asking.
Runs in your browser Your input never leaves your device.
This shows what a site can read; it does not measure how unique you are among all users. For that, try an independent test such as EFF’s Cover Your Tracks. Nothing on this page is uploaded.
Report a problem with this tool
About this tool
Websites can read dozens of details about your browser without asking: the user agent, screen size, time zone, languages, CPU threads, graphics hardware, how your system draws a hidden canvas, and which fonts are installed. Alone each is common; together they can single out a browser, which is how fingerprint tracking works without cookies. This scan collects those attributes on your device, rates how distinguishing each is, and shows them in a table. It does not measure how unique you are compared with other users, and nothing is sent anywhere.
How to use it
- Press Scan my browser.
- Review the table, grouped by browser, hardware, rendering and storage.
- Pay attention to attributes tagged high: GPU, canvas hash and fonts.
- To reduce exposure, try a privacy-focused browser or anti-fingerprinting settings, then scan again and compare.
Common problems
- Canvas fingerprint shows "blocked"
- Your browser or an extension is blocking or randomizing canvas reads — that is the protection working.
- GPU shows as not available
- WebGL is disabled or blocked. That hides a strong signal but can also be unusual in itself.
- Values change between scans
- Some privacy browsers add noise on purpose so the fingerprint is not stable.