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Canonical checker

Paste a page's HTML — and optionally its response headers — to catch the canonical mistakes that make Google ignore or mis-assign your canonical signal. Nothing you paste leaves your browser.

Routes through the ThrillSEO proxy — also traces the canonical target for redirects automatically.
Verdict
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Canonicals found
0
In this page
Errors
0
Fix these first
Findings

Canonical is a hint, not a directive — Google may choose a different canonical based on other signals regardless of what this tag says. Cross-links: Redirect Checker · Hreflang Generator. Everything above runs locally except an explicit URL fetch. Tool provided free by ThrillSEO.