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WebRTC Leak Prevention – Stop Browser IP Leaks 2026

WebRTC leaks are one of the most common ways VPN users unknowingly expose their real IP address — not through their VPN failing, but through their browser bypassing it entirely. The fix is different for every browser and takes between one and five minutes depending on which browser you use. Run the test above first, then follow the guide for your browser below.

Why WebRTC Leaks Happen

WebRTC is built into all major browsers to enable video calls, voice chat, and peer-to-peer file sharing. To establish these connections, your browser collects your real IP address through a process called ICE candidate gathering and shares it with any site that requests it — including sites running background tracking scripts.

A VPN encrypts your traffic at the network level but cannot block WebRTC, which operates inside the browser itself. This means your real IP can be exposed to any website even when your VPN is fully connected. The only fix is at the browser level — which is what this guide covers.

How to Prevent WebRTC Leaks – By Browser

Chrome

The most leak-prone browser. Chrome has no native WebRTC disable option.

Fix: Install the "WebRTC Network Limiter" extension by Google LLC from the Chrome Web Store. Set it to "Disable non-proxied UDP". Alternatively enable WebRTC protection in uBlock Origin via Dashboard → Settings. See the full Chrome WebRTC guide for detailed steps.

Firefox

The easiest browser to fix — no extension needed.

Fix: Type about:config in the address bar, search for media.peerconnection.enabled and set it to false. WebRTC is now fully disabled. Re-enable it the same way if you need browser-based video calls. See the full Firefox WebRTC guide for details.

Brave

No action needed. Brave includes built-in WebRTC IP leak protection enabled by default.

Go to Settings → Privacy and Security → WebRTC IP Handling Policy and confirm it is set to "Disable non-proxied UDP". If you are using Brave and the test above shows a leak, check this setting and re-run the test.

Edge

Open edge://flags and search for "Anonymize local IPs exposed by WebRTC" — set to Enabled and relaunch. For stronger protection install the WebRTC Network Limiter extension from the Microsoft Edge Add-ons store. The same extension available for Chrome works in Edge.

Safari

Safari has a more conservative WebRTC implementation than Chrome and leaks less by default. There is no user-facing setting to fully disable WebRTC in Safari. If privacy is a priority, consider using Firefox or Brave as your primary browser instead.

Mobile Browsers

Chrome for Android and iOS does not support extensions so the Chrome desktop fix does not apply on mobile. Use Firefox for Android with the about:config fix, or Brave for Android which has built-in protection. Mobile Safari has low WebRTC exposure by default.

WebRTC Prevention vs DNS Leak Prevention

WebRTC leaks and DNS leaks are two separate issues that require separate fixes. Fixing one does not fix the other. A browser-level WebRTC fix stops your browser from exposing your real IP, but your VPN may still be leaking DNS requests to your ISP through a completely different mechanism.

Run a DNS leak test on the homepage to check both issues independently. If you have both a WebRTC leak and a DNS leak, fix the WebRTC leak using this guide and address the DNS leak through your VPN settings. The VPN Leak Test checks DNS, IP, and WebRTC leaks in a single scan.

Run the WebRTC leak test at the top of this page after applying your browser fix. If the test shows 'No WebRTC Leak Detected' and your real IP does not appear in the results, your prevention is working. Re-test after browser updates, as updates can occasionally reset extension settings or browser flags.

Related Guides

WebRTC Leak TestCheck if your browser is leaking your real IPWhat Is a WebRTC Leak?Understand how WebRTC exposes your IPFix WebRTC LeakStop WebRTC leaks in any browserWebRTC Fix: ChromeDisable WebRTC leaks in ChromeWebRTC Fix: FirefoxDisable WebRTC in FirefoxWebRTC Test ToolQuick WebRTC IP exposure checkDisable WebRTCStep-by-step guide for every browser

Frequently asked questions

Does a VPN automatically prevent WebRTC leaks?

No. Most VPNs operate at the network level and cannot block WebRTC, which runs inside the browser itself. Some VPN browser extensions — like NordVPN's Chrome extension — include WebRTC leak protection, but the VPN desktop app alone does not prevent WebRTC from exposing your IP. You need a browser-level fix regardless of which VPN you use.

What is the easiest browser to fix WebRTC leaks in?

Firefox is the easiest. Type about:config in the address bar, search for media.peerconnection.enabled, and set it to false. That single setting disables WebRTC completely — no extension needed. Brave is even simpler because it blocks WebRTC leaks by default with no action required from the user.

Will preventing WebRTC leaks break video calls?

It depends on the method. Fully disabling WebRTC in Firefox will prevent browser-based video calls like Google Meet from working. In Chrome, the WebRTC Network Limiter extension limits which IPs are exposed rather than disabling WebRTC entirely, so video calls usually still work. If you need video calling, use the limiter approach rather than a full disable.

Do I need to fix WebRTC leaks on mobile?

Yes, if you use a VPN on mobile. Chrome for Android and iOS does not support extensions, so the desktop Chrome fix does not apply. Switch to Firefox for Android with the about:config fix, or use Brave for Android which has built-in protection. Mobile Safari has low WebRTC exposure by default but is not fully immune.

What is the difference between a WebRTC leak and a DNS leak?

A WebRTC leak exposes your real IP address through your browser's real-time communication features. A DNS leak exposes which websites you visit by sending DNS queries outside your VPN tunnel. They are completely separate issues with separate fixes. Fixing one does not fix the other — you need to check and address both independently.

How do I know my WebRTC prevention is working?

Run the WebRTC leak test at the top of this page after applying your browser fix. If the test shows 'No WebRTC Leak Detected' and your real IP does not appear in the results, your prevention is working. Re-test after browser updates, as updates can occasionally reset extension settings or browser flags.

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