VPN Leak Tester - Free Online SEO Tool

The VPN Leak Tester helps you verify whether your VPN connection is truly hiding your real IP address and DNS queries. Many VPNs can unintentionally expose your identity through WebRTC leaks or DNS requests that bypass the encrypted tunnel, and this free tool makes it easy to detect those vulnerabilities before they compromise your privacy.

How to Use the Tool

• Click "Detect my IP" to automatically fill in your current public IP address as seen by the test.
• Optionally enter your expected VPN IP to compare against the detected address and confirm your VPN server location matches.
• Optionally enter your real/ISP IP (captured while the VPN is off) so the tool can flag a match if your real IP is exposed while the VPN is supposedly active.
• Review the WebRTC IP Leak section, which distinguishes between a genuine leak and normal local/private IPs detected through WebRTC.
• Run the test twice — once with your VPN off to record your real ISP IP, and once with it on — for an accurate before-and-after comparison.

Best Practices

• Always test with the VPN both on and off to establish a reliable baseline for comparison.
• If your current public IP matches your real/ISP IP while the VPN is active, this indicates the VPN is not masking your address correctly.
• Pay close attention to the WebRTC leak results — local/private IPs are normal, but a detected public IP through WebRTC signals a genuine leak.
• Test your VPN periodically, especially after software updates, since leaks can be reintroduced by browser or VPN client changes.

Why It Matters

Undetected IP or DNS leaks can expose your browsing activity, location, and identity even while connected to a supposedly secure VPN. The VPN Leak Tester gives you clear, actionable results — including "Leak Detected" or "No Leaks Found" — so you can confirm your privacy protection is working as intended and take corrective action if it isn't.