Using a VPN gives you a sense of safety—but WebRTC can quietly ruin that. Even with strong services like NordVPN or ExpressVPN, your browser might still expose your real IP address. That means:

• Your real location becomes visible
  WebRTC can reveal your public IP, which points to your city or country. If a website picks that up, it knows where you really are—even if your VPN says otherwise.
  
  

• Websites may block or track you
  Streaming platforms, advertisers, and even government sites can use this leak to track or restrict your access. That’s how some services know you’re using a VPN—even when you think you’re hidden.
  
  

• Your VPN can’t protect what your browser leaks
  VPNs route your traffic through secure tunnels. But WebRTC works at the browser level, which means it can bypass that tunnel unless blocked. If your browser leaks, your VPN is powerless to stop it.
  
  

Think of it like locking your front door (your VPN) but leaving a window open (WebRTC). If you care about privacy, you need to close both.

A quick WebRTC leak test lets you do just that—find the leak and fix it before your data ends up in the wrong hands.

Here’s how to check your browser for leaks using a trusted tool like vpntest.pro:

1. Turn on your VPN.

2. Go to vpntest.pro and hit Start Test.

3. Scroll to the WebRTC Leak Test section.

4. Compare the IP shown with your real location.

5. If the IP matches your home country or ISP, you're leaking.

You can also run an ExpressVPN WebRTC leak test or NordVPN WebRTC leak test—but they only test part of the picture. vpntest.pro checks WebRTC, DNS, and IP in one go.

Each browser behaves differently. Here’s what to expect:

Chrome WebRTC Leak Test

• Chrome has WebRTC enabled by default

• Use uBlock Origin or WebRTC Network Limiter to block leaks

• Test again on vpntest.pro after installing the extension

Firefox Test WebRTC Leak

• Go to about:config

• Search for media.peerconnection.enabled

• Set it to false

• This disables WebRTC and stops leaks instantly

Opera WebRTC Leak Test

• Open Settings > Advanced > Privacy & Security

• Scroll to WebRTC and select Disable non-proxied UDP

• This hides your real IP during WebRTC sessions

Safari & Edge

• Safari limits WebRTC by default, but still test it

• Edge allows hiding local IPs, but full protection requires VPN or extension

Tip: Use the same steps if you're on Linux. Just test your browser and apply the fix.

Sometimes you’ll fix WebRTC but still leak DNS requests. That’s why vpntest.pro runs both:

• WebRTC leak test — Checks if your real IP is exposed via your browser

• DNS leak test — Verifies that your DNS requests go through the VPN, not your ISP

This combo helps ensure your VPN is fully doing its job.

Big names like ExpressVPN and NordVPN often pass, but not always—especially if your browser was already open before you connected the VPN.

Even the best VPN won’t help if your browser was already running before you connected the VPN. That’s because many browsers—like Chrome and Firefox—can cache your original IP address. If that cached data is still in memory, it can leak through WebRTC, no matter how solid your VPN is.

So if you want to be sure you’re protected, here’s the right way to test:

1. Close all browser tabs and windows.
   This clears any old IP info the browser may have stored in memory.

2. Turn on your VPN.
   Make sure it’s fully connected before doing anything else.

3. Open a brand-new browser tab.
   Start fresh to avoid cached leaks from old sessions.

4. Run a full WebRTC VPN leak test at vpntest.pro.
   It checks for WebRTC, DNS, and IP leaks in one go, giving you a full privacy report.

Pro Tip: Run this test on every browser you use. Just because Chrome is safe doesn’t mean Firefox or Opera is.

A WebRTC leak test is one of the easiest ways to check if your VPN is doing its job. If your real IP shows up in the test, you're not as private as you think.

Usevpntest.pro to test your setup in seconds. It's free, clear, and reliable. And if there’s a leak, you’ll know exactly how to fix it.

1. What is a WebRTC leak test?

It checks if your browser is leaking your real IP through WebRTC—even when your VPN is active.

2. How do I run a WebRTC leak test in Chrome?

Use vpntest.pro or install WebRTC Network Limiter, then test again to confirm the fix.

3. How can I test WebRTC and DNS leaks at once?

Go to vpntest.pro and run a full DNS and WebRTC leak test in one click.

4. Does ExpressVPN or NordVPN protect against WebRTC leaks?

Yes, both help—but browsers can still leak if you don’t configure them. Always run a test to confirm.

5. Can I test WebRTC leaks in Firefox or Opera?

Yes. Just follow browser-specific steps above and run your firefox test WebRTC leak or Opera WebRTC leak test using vpntest.pro.