Canonical Tag Checker
Check the canonical tags on multiple URLs. Find missing, self-referencing, or different canonical URLs.
About This Tool
The Canonical Tag Checker helps you audit your website's canonical tags:
- Self-referencing - Canonical points to itself (good)
- Different - Canonical points elsewhere (may be intentional)
- Missing - No canonical tag found (should add one)
Canonical Tag Checker
When to use this tool
Canonical tags tell search engines which URL should represent a page when duplicates or similar versions exist. This checker helps you find missing, self-referencing, cross-domain, or unexpected canonicals in bulk.
Practical tips
- Check templates after launches, migrations, and CMS changes.
- Compare canonical URLs against your sitemap to catch mismatches.
- Investigate canonicals that point to non-200, redirected, or unrelated pages.
Frequently Asked Questions
Should every page have a canonical tag?
Most indexable pages benefit from a canonical tag, even when it is self-referencing, because it makes your preferred URL explicit.
Is a canonical tag the same as a redirect?
No. A redirect sends users and crawlers elsewhere. A canonical tag is a hint about preferred indexing while the page remains accessible.
Can canonical tags point to another domain?
They can, but cross-domain canonicals should be intentional and tested carefully.