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Tracker Detection Test Page

\n\n

Step 1: Visit these 3 first-party test sites

Each site is a separate domain and embeds the same demo tracker twice — once\n as <script src> and once in an <iframe>.

Test Site 1

Test Site 2

Test Site 3

\n\n

Step 2: Check what the tracker stored

Tracker ID: Not Found

Sites recorded by the tracker: Not Found

Raw tracker data:

Not Found

\n \n

This uses the /collect endpoint which visits each site's iframe\n context and collects the partitioned localStorage via postMessage. This bypasses storage\n partitioning to show what the tracker stored across all sites.

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Code