Detect canonical loops, broken targets, cross-domain canonicals, multiple tags, and conflicting signals — all in one check.
📁 Declared Canonical🔁 Self-Referencing☠️ Canonical → 404🔄 Canonical Loop🌍 Cross-Domain Canonical📋 Multiple Canonicals⚡ HTTP vs Meta Conflict
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💡 Fetches the page, canonical target, HTTP headers, and robots.txt signals.
Checking canonical signals…This usually takes a few seconds.
Canonical Chaos: The 7 Issues This Tool Catches
Finds whether the page has a canonical URL in the HTML or HTTP header.
Checks whether the canonical correctly points to the current page.
Tests whether the canonical target is accessible or broken.
Detects when the canonical target points back in a problematic loop.
Flags canonicals that point to another domain for review.
Finds duplicate canonical tags or mixed header/meta canonicals.
Compares canonical signals from HTML and response headers.