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W3C Link Checker vs Broken Link Check: catalog facts
W3C Link Checker	Broken Link Check
Free Free to use on the W3C website.	Freemium Free for up to 3,000 pages; advanced services are available.
Web	Web
Checks anchors as well as full URLs Recursive crawling with a configurable depth	No sign-up or download Shows where each broken link is in the HTML
Plain interface with a text-heavy report Works best when the pages already have valid markup	Free version limited to 3,000 pages
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.