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W3C Link Checker vs Dead Link Checker: catalog facts
W3C Link Checker	Dead Link Checker
Free Free to use on the W3C website.	Freemium Manual checks are free; scheduled automatic checks require a paid subscription.
Web	Web
Checks anchors as well as full URLs Recursive crawling with a configurable depth	Free manual checks of whole sites or single pages Can check multiple sites in one run
Plain interface with a text-heavy report Works best when the pages already have valid markup	Automated checking is paid Scheduling and multi-site reports need an account
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.