WebRTC Leak Test

What Is WebRTC?

WebRTC (Web Real-Time Communication) is an open-source technology that enables voice calls, video chats, and peer-to-peer file sharing directly in your web browser — no plugins or apps required. It's used by video conferencing tools, live streaming platforms, and many modern web applications.

Why Can WebRTC Be a Privacy Concern?

While WebRTC is incredibly useful, it has a privacy implications. To establish peer-to-peer connections, WebRTC uses a protocol called ICE (Interactive Connectivity Establishment) which can reveal your device's local and public IP addresses to websites — even if you're using a VPN.

This happens because WebRTC performs its own connection checks independent of your browser's proxy settings. Websites with JavaScript can use the WebRTC API to discover:

• Your public IP address (as seen by the STUN server)
• Your local/private IP address on your network
• Potentially, information about your network configuration

How Modern Browsers Handle This

Recognizing the privacy implications, modern browsers have implemented various protections:

• Firefox — Blocks WebRTC IP leaks by default in private browsing and offers settings to disable it in regular browsing
• Chrome — Shows warnings but still exposes local IPs in most configurations
• Safari — Implements restrictions on WebRTC IP exposure
• Edge — Similar behavior to Chrome as it uses the same engine

What Do the Test Results Mean?

No exposed addresses detected: Your browser is either blocking WebRTC IP exposure or doesn't support it. This is good for privacy.

Potential exposure detected: Your browser revealed local or public IP addresses through WebRTC. If you're using a VPN, your real network IP may be visible to websites despite the VPN connection.

WebRTC unsupported or restricted: Your browser doesn't support WebRTC or has it completely disabled. This eliminates the WebRTC privacy risk but may prevent some web features from working.