Canonical
Checker.
Check canonical tags and verify URL canonicalization for SEO optimization. Ensure your pages are properly configured to avoid duplicate content issues.
Canonical Checker
Check canonical tags and verify URL canonicalization for SEO optimization
What It Checks
- •Presence of canonical tags in HTML
- •Self-referencing canonical URLs
- •Multiple canonical tags (error detection)
- •HTTP status code verification
- •Protocol mismatches (HTTP vs HTTPS)
Common Issues
- •Missing canonical tags on duplicate content
- •Canonical pointing to wrong URL
- •Multiple canonical tags causing confusion
- •Canonical URLs returning 404 errors
Why Canonical Tags Matter
Canonical tags tell search engines which version of a URL is the preferred one when you have duplicate or similar content accessible through multiple URLs. This prevents duplicate content penalties and consolidates ranking signals to your preferred page.
Proper canonicalization is essential for SEO, especially for e-commerce sites with filtered product pages, sites with URL parameters, or content available on multiple domains. Our tool helps you verify that your canonical tags are correctly implemented and pointing to the right URLs.