Redirect Map Checker
Analyze a pasted redirect map for duplicate sources, self-redirects, chains and loops without crawling the web.
Audit a redirect mapping before launch
Enter one redirect per line as source URL and destination URL separated by a tab, comma or ->.
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How the calculation works
The checker builds a source-to-destination map from the pasted rows. It flags a duplicate when the same source is assigned more than once, a self-redirect when source equals destination, a chain when a destination is also another mapped source, and a loop when traversal returns to an earlier URL.
How to use the result
Use it before migrations or URL cleanup to reduce avoidable redirect hops and contradictory mappings. Fix loops and duplicate source rules first, then simplify chains so old URLs point as directly as practical to the final destination.
Assumptions and limitations
This is a static map analysis. It does not request URLs, verify HTTP status codes, detect server-side rules not in the pasted map, or decide whether each destination is the correct SEO replacement. Only absolute URLs are accepted for clear comparison.
Example
A line such as old-b → old-a becomes a chain when old-a is itself mapped to new-a.