What is a WebRTC leak?

A WebRTC leak happens when your browser's real-time communication feature exposes your real public IP address — even while you are connected to a VPN. Websites can read this IP using JavaScript without your knowledge.

Why does WebRTC leak my IP even with a VPN?

WebRTC asks your operating system directly for network addresses to find the best connection path. Many VPNs only route normal traffic, so the browser can still reveal your real IP independently of the VPN tunnel.

Does a VPN stop WebRTC leaks?

Not on its own. Many VPNs do not block WebRTC because the leak happens inside the browser. You need a VPN with explicit WebRTC leak protection, a browser extension, or to disable WebRTC manually.

Should I disable WebRTC completely?

Disabling WebRTC entirely stops leaks but breaks video calls, screen sharing, and some streaming features. For most people, a browser extension or a VPN with WebRTC leak protection is a better balance.

What Is WebRTC and How It Can Expose Your IP

What is WebRTC?

WebRTC (Web Real-Time Communication) is a technology built into web browsers that enables direct audio, video, and data communication between users without needing plugins or third-party software.

It's used by popular services like Google Meet, Discord, Zoom, and Facebook Messenger to provide seamless video calls directly in your browser.

How WebRTC Exposes Your IP Address

To establish peer-to-peer connections, WebRTC uses a process called ICE (Interactive Connectivity Establishment). During this process, your browser shares:

Local IP address: Your device's internal network IP (e.g., 192.168.1.x)
Public IP address: Your real internet-facing IP, even if you're using a VPN
ISP information: Potentially revealing your actual location

Example: You connect to a VPN in Germany to appear as if you're browsing from there. But a website using WebRTC can detect your real IP in the United States, completely bypassing your VPN.

Why WebRTC Leaks Are Dangerous

VPN bypass: Websites can see your real IP even when using a VPN
Location tracking: Your actual geographic location can be exposed
Privacy breach: Advertisers and trackers can fingerprint your device
Security risk: Attackers can use your IP for targeted attacks

Why It Happens Inside the Browser

The key thing to understand is that a WebRTC leak is a browser behaviour, not a VPN failure. WebRTC reaches the network layer directly, so a VPN that only reroutes ordinary web traffic never sees those requests. That's why you can have a perfectly working VPN and still leak — and why the fix lives in the browser (or a leak-protecting VPN), not in changing your server location.

How to Test and Stop a WebRTC Leak

Start by running our free WebRTC leak test — if your real IP appears while a VPN is connected, your browser is leaking. To stop it, follow the dedicated browser guides:

You don't always need to disable WebRTC entirely — that breaks video calls. A leak-blocking extension or a VPN with built-in WebRTC protection is usually the better balance; compare options on our Compare VPN Services page. It's also worth checking for DNS leaks, which expose your activity in a separate way, and understanding why hiding your IP isn't enough.