Even without cookies, websites can identify you by combining dozens of small signals your browser exposes — canvas rendering quirks, GPU, fonts, audio stack, screen size, timezone, and more. This page computes the same signals and a single SHA-256 hash, entirely in your browser.
Combined Fingerprint (SHA-256)
—
This hash is computed from all the signals below. If it changes between browsers or after you change a setting, that signal contributed to your uniqueness.
Fingerprinting is reading signals that are individually common, but together add up to a near-unique identifier. Each signal contributes some entropy (bits of uniqueness). On a typical desktop browser the combined entropy is enough to distinguish one in millions.
privacy.resistFingerprinting in about:config (breaks some sites).Do you send my fingerprint anywhere?
No. All computation happens in your browser. The hash is never transmitted to our servers.
Why does my hash change when I resize the window?
Viewport size is one of the signals. Resizing changes it, which changes the hash. Sites that fingerprint usually use a reduced set of stable signals instead.
Can I use this hash to stop tracking?
No — knowing your hash doesn't prevent a site from recomputing it. Use anti-fingerprinting browser modes and extensions (see above).