What your browser leaks

Nothing runs until you press the button below. When you do, this page fingerprints your own browser — the same techniques a tracking script would use, run once, on you, and shown back to you instead of sent anywhere silently.

This kind of fingerprint is what makes a browser identifiable even in incognito mode and across most consumer VPNs — a VPN changes your IP, not your GPU, fonts, or screen.