Onionspector – now let's see what The Onion knows about you
Summary
Onionspector is a Tor-focused browser fingerprinting privacy tool that analyzes what a Tor Browser user reveals to Onion Services. It checks server-visible signals without JavaScript, then adds client-side fingerprint checks when JavaScript is allowed, and emphasizes that the results are not a deanonymization oracle. The project pairs with Onionservatory to examine both sides of the onion connection and provides guidance on using the tool to understand browser-visible surface and privacy protections.