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Webbkoll vs Web Check: catalog facts
Webbkoll	Web Check
Free Free to use, run by a non-profit foundation.	Free Free and open source.
Web	Web, Self-hosted
Covers cookies, third parties, HTTPS and security headers in one report Checks HTTP to HTTPS redirects	Many checks combined in one report Can be self-hosted with Docker
Some sites fail to scan correctly Simulates a single default browser visit	Running it yourself takes some setup Only looks at publicly available information
Web application	Self-hosted
Closed source	Open source
License not stated	License not stated
No account needed	No account needed
Needs internet	Not stated if it works offline
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.