Combines a dozen browser signals — including canvas, WebGL, audio and font enumeration — into a single fingerprint. Sites use this to track you even when cookies are blocked.
Entropy figures are public-research estimates (EFF Panopticlick / Cover Your Tracks), not measured on this site.
Each browser signal is just a string — but combine timezone, screen size, fonts, GPU model and audio quirks, and the result is often unique. Trackers store the combined hash and recognise you on the next visit even with cookies cleared.
A VPN hides your IP but does not change any of the signals on this page. Tor Browser and Brave normalise many of them. Disabling JavaScript stops the canvas/WebGL/audio probes but breaks most modern sites. Resetting browser profiles is the bluntest reset.