Show HN: GlassBox – what the browser reveals, and how identifiable you are

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Summary

GlassBox is a client-side browser tool that reveals what data websites can collect about you through fingerprinting, running mostly locally to demonstrate privacy implications.

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Cached at: 08/24/26, 04:50 PM

# GlassBox: what your browser reveals to every site you visit Source: [https://glassbox.codecanary.org/](https://glassbox.codecanary.org/) Fingerprint bench · client\-side only Every measurement a website can take from your browser, run live and shown back to you\. This is the same class of signals the tracking and anti\-fraud scripts collect — surfaced instead of hidden\. 1Hardware & environmentcross\-engine · links you across*different*browsers … 2Engine × hardwarecanvas · audio · math · codecs — links within one engine family … 3Browser buildwhich browser & version — not who you are … 4Sessiontheme · quota · timing · IP — resets constantly … **Mostly local\.**Every fingerprinting probe runs in your browser and stays here — no analytics, no beacon\. The**one exception**is IP intelligence: on load, GlassBox queries public geolocation APIs \(ipwho\.is, ipapi\.is\) to look up your address, network and VPN status\. Turn**Geo**off in the toolbar to stay fully local\. View source to confirm the rest\.

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