Tool used to check for broken hyperlinks.
Link checking is one aspect of site management — the regular maintenance necessary to keep a site up-to-date.
A “broken hyperlink” does not correctly point to the intended destination page. The most common scenario involves a hyperlink “breaking” when the destination page is deleted or moved to another location.
Basic link checking involves testing for “404 – File Not Found” responses. Many link checkers also test for slow-loading pages, noting pages that fail to respond within a reasonable time limit.
While link checking tools eliminate a considerable amount of manual work, they do not completely eliminate the need for human review. For example, a page can return a valid response, but the content can change drastically — especially in the case of expired domains and objectionable content.
SEMrush vs. Ahrefs vs. Moz (includes backlink comparison)
MarketingTerms.com (April 20, 2019)