What this tool checks
Find missing, invalid or conflicting canonical link declarations. All results are calculated locally from your supplied snapshot; no third-party website is automatically scanned.
How to test it
Paste HTML with two different rel=canonical href values and the checker reports a conflict.
Scope and limitations
Rule-based local diagnostics are not proof of Google indexing, Merchant Center account status or marketplace approval. Confirm relevant live requirements and verify results before making changes.
Frequently asked questions
Does the check contact a seller or Google account?
No. All information is supplied by you; no external account access is used by this release.
Does a passing result guarantee eligibility or rankings?
No. It evaluates the entered snapshot against the stated checks. Live policy eligibility and search performance require independent verification.