Enter URL or HTML above to audit canonical implementation
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How to Use Canonical URL Checker
- Paste webpage HTML markup or enter a target URL.
- Click "Audit Canonical Tag".
- Review detected canonical URL, status evaluation (Self-referencing, Cross-domain, Missing, Duplicate).
- Follow technical recommendations to fix duplicate content issues.
Key Features & Advantages
- Detects missing, multiple, or conflicting canonical declarations
- Validates absolute vs relative URL paths
- Checks HTTP vs HTTPS protocol consistency
- Provides actionable SEO fix instructions
Frequently Asked Questions
A canonical tag tells search engines which version of a URL is the master copy, preventing penalties for duplicate content across parameters, HTTP/HTTPS, or pagination.