Find Two Redirect Rules Competing for the Same Source Path

How to Use This Tool

Ignore comments and count distinct sources before deployment. Check a pasted redirect map locally for duplicate source paths that create ambiguous or unreachable redirect rules.

The failure Redirect Duplicate Check is designed to catch

The second duplicate may never run, so a syntactically valid redirect file can still encode a rule that has no effect. The boundary is the job stated in Find Two Redirect Rules Competing for the Same Source Path; Redirect Duplicate Check is not intended to score or transform a different workflow.

The Redirect Duplicate Check input contract

The fields used for this specific operation are Input text, Unused option. Keep the source values beside the Redirect Duplicate Check result, because replacing the original would remove the evidence needed to reproduce or reverse the operation.

• For Redirect Duplicate Check, Input text starts at /old /new 301 /old /other 302 /a /b 301 in the worked case; replace that example with the matching source value.
• For Redirect Duplicate Check, Unused option starts at in the worked case; replace that example with the matching source value.

Worked result for Redirect Duplicate Check

The executable case called Default browser-only example expects out: Rules: 2 Duplicate sources: /old. Verify that observation before entering real material, and then change one Redirect Duplicate Check field at a time so an unexpected direction or formatting change can be traced to a specific input.

Reading the Redirect Duplicate Check output

No. The transform runs in browser JavaScript and the page does not call a processing API. Network extensions or a compromised device remain outside this page's control. Apply that answer only when Input text, Unused option describe the same scope and format as the worked operation. If the source uses different units, quoting, nesting, timing or account rules, a plausible-looking Redirect Duplicate Check output is not sufficient validation.

Assumptions attached to Redirect Duplicate Check

• Redirect Duplicate Check assumes that the pasted input uses the syntax described by the selected standard or page guidance.
• Redirect Duplicate Check assumes that the operation is intentionally narrow and does not infer private downstream schema rules.

If one of these Redirect Duplicate Check assumptions is false, keep the result as a diagnostic rather than production or decision data, and choose an implementation that explicitly supports the missing rule.

Evidence maintained for Redirect Duplicate Check

The recorded reference is IETF RFC 9110 — HTTP Semantics. Reopen that source when the definition, format, fee or policy behind Redirect Duplicate Check changes; private configuration and downstream acceptance still have to be checked in the user's own system.

Where Redirect Duplicate Check runs

The named operation executes in browser JavaScript without an ecech calculation API. For Redirect Duplicate Check, local execution reduces transmission but does not control browser extensions, device security or the destination where the result is pasted, so sensitive inputs still require the user's normal handling rules.