Free tool
Browser, WebRTC & IP leak test
See WebRTC candidates, user agent, language, and timezone.
Also check what is my IP for the address our servers see.
The browser leak test runs in your own browser to reveal WebRTC ICE candidates, user agent, language, and timezone — signals that can expose a real IP even when a VPN changes your “what is my IP” result.
What WebRTC can expose
WebRTC gathers host, server-reflexive, and relay candidates for real-time calls. Server-reflexive candidates may include your true public IP. This page enumerates candidates locally; we do not need to store them for the test to work.
How to validate a VPN
Open this test and What is my IP side by side. The server-seen IP should match your VPN egress. If WebRTC lists a different public address, enable the VPN’s WebRTC protection, disable WebRTC, or switch clients.
- Compare candidates with the IP shown on /my-ip/
- mDNS host candidates are normal and less sensitive
- Extensions and browser flags can alter results
Other browser signals
User agent, languages, and timezone do not reveal your IP but help sites fingerprint sessions. They appear here so you can see what a typical site JavaScript environment already knows.
FAQ
Deeper guide: Read: WebRTC leaks on VPNs