experiment 10 · browser APIs
you already
told them everything.
You haven't clicked anything. No login. No form. But your browser
has already sent dozens of data points that, combined, identify you
uniquely among billions of users. This is what you leak on every page load.
77% of the web uses browser fingerprinting.
Unlike cookies, it doesn't need storage — it can't be cleared.
A VPN changes your IP. It doesn't change your GPU, your fonts,
your timezone offset, your screen resolution, or how your browser
renders a canvas. These form a fingerprint that persists across sessions.
—
bits of entropy · your fingerprint uniqueness
computing...
▶ how does this work?
Browser fingerprinting works by reading dozens of passive signals — no permission required.
Each signal contributes some number of "bits of entropy": the more unique a value,
the more bits it adds. 33 bits = 1 in 8 billion — essentially globally unique.
The canvas and WebGL fingerprints are especially stable — they depend on your GPU's
exact rasterization pipeline, which varies by GPU model and driver version.
Even with the same browser on the same OS, two different GPU models produce
different pixel values for the same drawing commands.
This experiment runs entirely in your browser. Nothing is sent anywhere.