Browser privacy

WebRTC Leak Test

Check whether WebRTC exposes local or real network signals after using VPN apps, proxy nodes, Clash, V2Ray, or Android clients.

Updated: 2026-05-11

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Direct Answer

WebRTC can expose browser-level network signals even when a VPN or proxy is connected. Test it with IP and DNS checks before relying on a route.

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What WebRTC reveals

WebRTC may reveal local network details, candidate IPs, and browser behavior that differs from the VPN route.

When it matters

It matters most in browser workflows, account risk checks, privacy-sensitive browsing, and inconsistent proxy setups.

How to reduce exposure

Use browser privacy settings, hardened profiles, VPN WebRTC protection, or a browser that limits WebRTC leaks.

Steps

  1. Connect to your VPN or proxy route.
  2. Run IP, DNS, and WebRTC checks in the same browser.
  3. Compare WebRTC results with public IP and DNS results.
  4. Change browser settings or profiles if WebRTC exposes unexpected data.

Checklist

  • WebRTC does not show the original public IP.
  • Local candidates are expected for the browser profile.
  • Browser language and time zone are consistent.
  • The result remains stable after refresh.

Troubleshooting

WebRTC shows the real public IP

Enable WebRTC leak protection or use a hardened browser profile.

Different browsers show different results

Check each browser separately; privacy settings are browser-specific.

Proxy works but WebRTC leaks

Use a full-device VPN/TUN route or browser-level WebRTC restrictions.

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DNS leak test Check resolver exposure too. VPN free trial Compare routes with leak protection. Proxy vs VPN Choose a route model. NetScope Run browser-side diagnostics.

FAQ

Does WebRTC leak on every browser?

No. Behavior depends on browser, profile, extensions, and VPN or proxy routing.

Does a VPN always block WebRTC leaks?

No. Some VPN apps include protection, but you still need to test the browser result.

Is a local IP always dangerous?

Not always, but unexpected local or real network exposure should be reviewed in privacy-sensitive workflows.

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