WebRTC Leak Test
Detect if WebRTC is leaking your real IP address even when using a VPN. Test for WebRTC vulnerabilities in your browser. Free WebRTC leak checker.
What Is WebRTC Leak Test?
A WebRTC leak test detects if your browser's WebRTC (Web Real-Time Communication) feature is exposing your real IP address. WebRTC is used for video calls and peer-to-peer connections but can bypass VPN tunnels and reveal your actual public and private IP addresses.
How to Use
Visit this page to automatically test for WebRTC leaks. The tool uses JavaScript to query WebRTC STUN servers and checks if any IP addresses discovered differ from your apparent VPN IP. If your real IP appears, you have a WebRTC leak.
Use Cases
- Verify VPN is not leaking your real IP through WebRTC
- Check browser privacy settings effectiveness
- Test WebRTC blocking extensions
- Audit browser security before sensitive browsing
- Compare WebRTC behavior across different browsers
Frequently Asked Questions
What is a WebRTC leak?
A WebRTC leak occurs when your browser's WebRTC feature reveals your real IP address to websites, even when you are using a VPN. WebRTC uses STUN/TURN servers to discover your IP for peer-to-peer connections, and this discovery can bypass VPN tunnels.
How do I prevent WebRTC leaks?
In Firefox: go to about:config and set media.peerconnection.enabled to false. In Chrome: install a WebRTC leak prevention extension. Some VPN browser extensions include WebRTC leak protection. Brave browser blocks WebRTC leaks by default.
Does WebRTC leak affect all browsers?
Most modern browsers support WebRTC: Chrome, Firefox, Edge, Opera, and Safari. The leak vulnerability primarily affects Chrome-based browsers. Firefox allows disabling WebRTC entirely. Safari has partial WebRTC support with fewer leak risks.