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Web Check vs Cloudflare Radar URL Scanner: catalog facts
Web Check	Cloudflare Radar URL Scanner
Free Free and open source.	Free Free to use.
Web, Self-hosted	Web
Many checks combined in one report Can be self-hosted with Docker	Reports technologies, security and performance in one scan Nothing to install
Running it yourself takes some setup Only looks at publicly available information	Proprietary hosted service Only checks public URLs one at a time
Self-hosted	Web application
Open source	Closed source
License not stated	License not stated
No account needed	Not stated if an account is needed
Not stated if it works offline	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.