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Ahrefs Broken Link Checker vs Siteliner: catalog facts
Ahrefs Broken Link Checker	Siteliner
Free The checker is free; it is a lead-in to Ahrefs' paid SEO platform.	Free Free scans are available from the website; account sign-up is optional.
Web	Web
No signup or download required Shows both inbound and outbound broken links	Finds duplicate content within a site Reports broken links and redirections in the same scan
Deeper reports need a paid Ahrefs account Results depend on Ahrefs' index rather than a fresh crawl of your site	Web service only, so the site must be publicly reachable Focuses on content and links rather than speed or accessibility
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 24, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.