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Blacklight vs Request Map Generator: catalog facts
Blacklight	Request Map Generator
Free Free to use, run by a donation-supported newsroom.	Free Free to use.
Web	Web
Detects fingerprinting, session recording and keystroke capture Names data flows to major platforms	Visual map of all third-party domains a page calls Shows where bytes come from and which domains are slow
Scans a single page per run Cached results may be shown unless a fresh scan is forced	Tests can queue behind other pending jobs Shows a single page load rather than a whole site
Web application	Web application
Closed source	Closed source
License not stated	License not stated
No account needed	No account needed
Needs internet	Needs internet
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.