WebRTC Test
IP8 privacy test
WebRTC Leak Test
WebRTC is the browser feature behind video calls and peer-to-peer connections — and it can quietly hand your real IP address to every site you visit, even when you’re on a VPN or proxy. This test runs entirely in your browser and shows exactly what WebRTC exposes about you.
No WebRTC leak detected
Your browser passed the WebRTC IP-leak test — your real IP isn’t being exposed over WebRTC. Privacy is broader than a single signal, though, so it’s worth checking what else your browser reveals and keeping WebRTC protection on.
Keep WebRTC locked down
The IP8 browser extension includes a built-in WebRTC leak shield — one switch stops your browser from exposing your real IP over WebRTC. It replaces our earlier standalone WebRTC Leak Shield and adds IP, DNS, Whois and privacy tools in the same popup.
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What is WebRTC?
Web Real-Time Communications (WebRTC) is an open-source technology that lets desktop and mobile browsers exchange data in real time through simple APIs.
It powers audio, video and networking directly in web and mobile apps, and works alongside the Media Capture and Streams API to deliver multimedia experiences that once needed plugins.
Its key advantage is real-time, peer-to-peer communication between browsers — which is also exactly what makes the IP leak possible.
Key components
WebRTC is built on three main APIs:
- RTCPeerConnection: sends and receives audio, video and data between peers.
- getUserMedia: requests access to the user's camera and microphone.
- RTCDataChannel: transfers arbitrary (non-media) data directly between browsers.
WebRTC is supported in Chrome, Firefox, Edge, Opera and Safari.
The flip side
The downside is privacy: to make a peer-to-peer connection, WebRTC can reveal your real IP address to a website — sometimes even when a VPN or proxy is active.
This was documented in 2015 by Paolo Stagno as the “WebRTC leak,” when several well-known VPNs were found exposing users' IP addresses to sites without consent.
Because it bypasses the VPN tunnel, a WebRTC leak can undo the anonymity you thought you had — which is why it's worth checking.
How do I know if I'm at risk?
The result at the top of this page tells you directly: if WebRTC is exposing your IP, you'll see a red warning with the address that is leaking. If not, you'll see the all-clear.
How do I prevent a WebRTC leak?
Block or disable WebRTC. The simplest way is the IP8 browser extension, which includes a built-in WebRTC leak shield — flip one switch and your browser stops handing out your IP over WebRTC. It works on Chrome, Firefox and Edge, and bundles IP, DNS, Whois and privacy tools in the same popup.
The extension replaces our earlier standalone “WebRTC Leak Shield” add-on.