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.
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.