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Canonical Tag Checker

Diagnose SEO issues instantly. Ensure your canonical tags are properly implemented to avoid duplicate content penalties.

Frequently Asked Questions

What is a Canonical Tag?

A canonical tag is an HTML code that tells search engines which version of a URL is the "master" copy to prevent duplicate content.

Why do I need to check it?

Incorrect tags can cause your pages to disappear from search results. Regular checks ensure your SEO strategy is working.

Does this support 'http' removal?

Yes! You can just type "example.com" and our tool automatically adds the protocol to scan the site.

What is a self-referencing canonical?

It's when a page points to itself as the original. This is SEO best practice to prevent scrapers from stealing your ranking.

Is this tool free?

Yes, completely free and unlimited usage.

Does it work on any website?

Yes, we use a server-side fetch that bypasses CORS restrictions, allowing you to check virtually any public URL.