W3C Link Checker

The W3C Link Checker is a free tool provided by the World Wide Web Consortium (W3C) to help webmasters identify and resolve broken links on their websites.

It thoroughly scans both internal and external links, checking their validity, and reports any HTTP errors like “404 Not Found.” The tool is particularly valuable for ensuring web pages adhere to W3C standards and maintaining overall site quality.

It provides detailed reports with the location of broken links and the specific issues found, making it easier to fix them.