The data behind the data
Our tools and reports rest on two curated libraries and a published method. All three live here, and all three keep expanding — if something is wrong or missing, tell us.
v1 · 66 vendors
The vendor fingerprint library
Which analytics, advertising, and martech vendors we detect, across 9 categories, and how a detection rule is built and tested. The roster behind the free scanners and section 3 of the report.
43 entities · 102 domainsThe tracker entity map
Which parent company owns which third-party domains — the map that turns a list of hostnames into a picture of who actually reaches the web.
17 datasets · all queriesReport methodology
Sources, definitions, the arithmetic behind every headline number, every BigQuery query in full, the data behind each chart as CSV, and the limits of the method.