Internal Link SEO Checker

Analyse internal links: check 404s, 301 redirects, chains, loops, anchor text, dofollow/nofollow and highlight links on page.

Internal Link SEO Checker is a free tool built for SEO specialists who want to quickly audit and fix internal links without switching between tools. Open the sidebar on any page and scan all internal links in one click. You'll instantly see which links are broken (404), which are redirected (301, 302, 307, 308), and where redirect chains or loops occur. Every link shows its anchor text, dofollow/nofollow attribute, and whether it was found in the HTML source or injected via JavaScript. External links can be checked too. Key features: - Status code checking: 2xx, 3xx and 4xx per link - Redirect destination: see exactly where a redirect points to - Redirect chain detection: visualise multi-hop redirect paths - Redirect loop detection: catch A→B→A loops before they cause issues - Page highlighting: green/orange/red markers on all links (toggle on/off) - Scroll to link: jump directly to any link on the page - Smart copy: redirects copy the final URL, 404s copy the original - Search: filter by URL or anchor text - HTML / JS / HTML+JS: detect whether links are in source code or JavaScript - dofollow / nofollow: see rel attribute per link - Scan scope: choose which page elements to include (content, header, footer, buttons/CTAs and other) - Export CSV: all link data in one click, filename includes the scanned URL - Session cache: results persist if you accidentally close the sidebar v1.0.3 - Fixed: redirected links were not always detected. Redirects are now tracked hop by hop, including 301, 302, 307 and 308 - Redirects that end in a 404 are now listed as broken - Fewer unverified (ERR) results: status checks run in the background, for internal and external links - Servers that refuse HEAD requests are automatically retried with GET - All 2xx responses now count as OK - New footer with links to more free SEO tools and LinkedIn v1.0.2 - Removed popup, sidebar only - Added stop scan button - Same URL count v1.0.1 - Search bar also matches full URLs, including domain names - Hover/scroll works for external links - Removed horizontal scrollbar in the sidebar - Restructured categories as described above