LinkChecker
Find broken links and bad redirects
LinkChecker crawls a single page, a whole site, or a sitemap.xml and shows you every broken link, redirect chain, and dead anchor it finds — grouped by the page they live on, with the anchor text and target URL, so you know exactly where to fix each one. It catches 404s and the full range of HTTP errors, follows redirect chains (including loops and internal links that hop through a redirect), verifies that #anchor fragments actually exist, and flags SEO issues like mixed content, missing rel on external links, and target="_blank" without noopener. Add exclusion patterns to skip the links you don't care about, then export the report as JSON, CSV, or a standalone HTML file.