GlassBox is a client-side tool that reveals what your browser discloses and how identifiable you are to tracking scripts. It runs live measurements of every signal websites can collect, surfacing data usually hidden by anti-fraud systems.

The platform analyzes hardware and environment signals across engines, canvas, audio, math, and codecs. These probes link users across different browsers or within one engine family. It also identifies the specific browser build, version, theme, quota, timing, and IP address. Most data resets constantly during sessions.

All fingerprinting probes execute locally within the user's browser, ensuring no analytics or beacons are sent externally. The sole exception involves IP intelligence. Upon loading, Glass Box queries public geolocation APIs, specifically ipwho.is and ipapi.is, to determine address, network details, and VPN status.

Users concerned about privacy can disable Geo features via the toolbar to remain fully local. The source code is viewable to confirm that all other processes stay strictly on the client side, providing transparency into digital footprints.