What is a canonical tag?

A canonical tag (rel="canonical") is an HTML link element that tells search engines which version of a page is the primary one, avoiding duplicate index issues.

Should every page have a canonical URL?

Yes. Every indexable page should have a self-referential canonical tag pointing to its clean, parameters-free URL configuration.

Canonical Checker

Verify canonical tag implementation and detect duplicate content issues.

How to Use

1Enter the URL of the target webpage to check.
2Click 'Analyze' to parse canonical tag parameters.
3Confirm if the canonical URL matches the current page URL (self-referencing) or matches a cross-domain target.

Optimization Benefits

Ensure search engines index the master copy of a webpage.
Prevent duplicate content penalties on parameters or trailing slash variations.
Verify cross-domain canonical redirects are active on syndicated articles.

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