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W3C Link Checker vs Dr. Link Check: catalog facts
W3C Link Checker	Dr. Link Check
Free Free to use on the W3C website.	Freemium A free check is available, with paid plans for larger or repeated checks.
Web	Web
Checks anchors as well as full URLs Recursive crawling with a configurable depth	Flags links to malware and phishing sites, not only dead ones Checks resources such as images and style sheets
Plain interface with a text-heavy report Works best when the pages already have valid markup	Requires JavaScript in the browser Larger sites need a paid plan
Web application	Web application
Closed source	Closed source
License not stated	License not stated
No account needed	Not stated if an account is 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.