Canonical URL Checker
Inspect canonical tags, verify self-referencing URLs, and prevent duplicate content
Canonical URL Checker
Detect canonical tags, self-referencing consistency, and cross-domain mismatches
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What is Canonical URL Checker?
Check rel='canonical' tags, detect cross-domain canonicalization, and verify self-referencing SEO consistency.
The Canonical URL Checker scans both HTML head tags and HTTP response headers for canonical declarations. It identifies protocol mismatches (HTTP vs HTTPS), cross-domain canonical links, and conflicting declarations between HTML and server headers.
How to Use
Enter the URL of the page you want to inspect.
Click "Check Canonical URL".
Verify if the canonical tag is self-referencing or pointing to an alternate URL.
Review protocol, cross-domain status, and diagnostic issues.
Why Use This Tool?
Prevent duplicate content penalties
Verify self-referencing canonical tags on primary pages
Detect conflicting HTML vs HTTP header canonicals
Audit cross-domain canonical implementations