How these checks work

Every time you open a web page, your browser volunteers a surprising amount of information. This site surfaces it so you can understand your own privacy exposure. All checks run locally in your browser; the server is only used to look up your source IP.

Browser fingerprint

Screen resolution, GPU model, installed fonts, timezone, and subtle differences in canvas/audio rendering can, combined, identify your device fairly uniquely — without any cookies.

IP information

Your exit IP reveals an approximate country/city and your network operator. If it resolves to a datacenter/cloud provider, you are usually behind a proxy or VPN.

WebRTC leak

WebRTC is the browser's built-in real-time communication feature. It can expose your real public IP via STUN without you noticing — even with a VPN on. This is the most overlooked silent leak.

GPS location

Unlike coarse IP geo, GPS is accurate to tens of meters; but the browser must prompt for your permission first — that prompt is the privacy protection working.