What your browser gives away.
Three things to try out. Your browser computes everything itself – none of it leaves your device, nothing is stored.
Your browser as a seal
User agent, screen, time zone, language and CPU cores are hashed, and the hash is drawn as a graphic. Same browser, same device – same seal. Another computer looks different. That is what “fingerprinting” means – here without a server, just to look at.
One click per card.
The values the seal is made from – in plain text. Evaluated locally, nothing is transmitted.
User agent
The full user agent string your browser introduces itself with on the web.
Operating system
Platform, system and how many CPU cores your device offers the browser.
Browser & version
Name, version number and the configured language.
Display & time zone
Resolution, pixel density, colour depth and your system’s time zone.
Find location
Requests your location. Your browser asks for your permission first.
Everything at once
The all-round check: collects all the values above in one go.
Paint, sketch, play.
Mouse, pen or finger. Pick a colour and brush size, save as PNG – and somewhere around here hides an easter egg.
Tip: type the word nuyken anywhere on the page – and someone else briefly takes control. And if you right-click the logo, you end up in 1982.