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BrowserLeaks

A suite of tools that evaluates browser security and privacy, focusing on IP address leaks

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BrowserLeaks is a suite of browser-based tests that evaluate the security and privacy of a web browser. The tests identify ways websites may leak a user's real IP address, collect device information, and perform browser fingerprinting, helping users understand these risks and take steps to reduce exposure.

The suite includes IP address tests (reverse lookup, HTTP headers, whois, TCP/IP OS fingerprinting, WebRTC, DNS, and IPv6 leak tests), JavaScript and Web API data extraction, Canvas fingerprinting, WebGL Report, Font Fingerprinting, Geolocation API, Features Detection, TLS Client Test (TLS ClientHello, cipher suites, JA3/JA4 fingerprints), and Content Filters detection. Additional tools cover QUIC/HTTP3 fingerprinting, HTTP/2 fingerprinting, Chrome Extension Detection, WebGPU, Client Hints, DNS Leak Test, CSS Media Queries, ClientRects Fingerprinting, and Do Not Track/GPC status.

BrowserLeaks is available as a web-based suite with no stated pricing, plans, or editions.

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