Browser Privacy
What Is a WebRTC Leak?
Learn how browser WebRTC features can expose network details, why this matters when using a VPN, and how to test your browser.
Plain-English explanation
WebRTC is a browser technology used for real-time communication such as calls and screen sharing. In some situations it can reveal IP-related network details through the browser, even when you are focused on your normal public IP result.
Why it matters
- A WebRTC leak can expose details that a normal IP lookup does not show.
- Different browsers handle WebRTC differently.
- VPN apps and browser settings can affect what WebRTC reveals.
Quick self-check
- Open the WebRTC leak test in the browser you normally use.
- Check the result before and after connecting a VPN.
- Repeat on your phone and desktop if you use both.
What to do next
- Use a browser or VPN setup that limits unwanted WebRTC exposure.
- Keep the browser updated.
- Combine this check with DNS leak and browser fingerprint tests.