Browser Leak Detector · Bot-or-Not™
Free & open source. All tests run in your browser — nothing is sent to any server.
Classifies your public IP as residential, datacenter, VPN, or Tor exit. Requires ipinfo.io lookup (opt-in).
These attributes can uniquely identify your browser.
Analyzes 36+ browser signals to estimate whether you look like a real human or an automated bot. How does this work?
Pre-computed scores from real Playwright browser tests (headless/headed) and HTTP clients. Helps you calibrate what your own score means.
Records mouse movements, scrolling, clicks, and typing to detect automation. How does this work?
Submit your anonymized fingerprint to build a public k-anonymity dataset. No IP addresses, no cookies — just browser attributes.
Tests if your real IP is exposed via WebRTC STUN requests.
Your browser reveals timezone and locale. Do they match your proxy?
Cross-reference your results with these high-reputation detectors. All verified non-honeypot. Open each and compare results.
| Tool | Trust | Tests |
|---|---|---|
| Cover Your Tracks (EFF) | HIGH | K-anonymity vs millions of browsers |
| BrowserLeaks | HIGH | Canvas, WebGL, WebRTC, fonts, TLS (40+) |
| IPLeak.net | HIGH | IP, DNS, WebRTC, IPv6 |
| DNSLeakTest | HIGH | DNS resolver path, ISP |
| Leakish | HIGH | Open-source 8-module audit |
| PrivacyTests.org | HIGH | Cross-browser privacy benchmark |