Free tool / No account

Redirect map checker.

Check a CSV map for duplicate sources, conflicting destinations, self redirects, chains and loops. The file stays in your browser. This tool does not fetch URLs or check live HTTP responses.

Paste a CSV with old_url,new_url headersOr import a CSV file

Absolute HTTP(S) URLs · Up to 10,000 rules · 5 MB maximum

Your findings will appear here.

How to read the results

Row numbers include the header. A chain points at another source in your file; a cycle returns to a URL already visited. “No structural issues” means only that these checks passed for the supplied map.

See examples of chains and loops, or download a clean CSV template.