Canonical URL Checker
Identify duplicate content issues instantly. Verify if your pages are correctly using the canonical tag to protect your SEO.
Free Tool
Duplicate Content Audit
Ensure Google knows which version of your page to rank. check the <link rel="canonical"> tag in seconds.
Enter a URL to see the canonical tag
Stop Keyword Cannibalization
Duplicate content confuses search engines. If you have three pages with similar content, Google doesn't know which one to rank, so it often ranks none of them well. The Canonical URL Checker helps you verify that your site properly directs search engine bots to the primary version of your content.
When do you need a canonical check?
- eCommerce Sites: One product might be accessible via multiple categories (e.g.,
/shirts/red-shirtvs/sale/red-shirt). - URL Parameters: Marketing campaigns often add tags like
?utm_source=facebook. Without a canonical tag, this looks like a new page to Google. - Syndicated Content: If you publish articles on Medium or LinkedIn, your original blog post should be the canonical version.
How to interpret results
Self-Referencing (Good): The page points to itself. This is standard for unique pages.
Points Elsewhere (Intentional): Valid for duplicate/similar pages (like paginated results or print versions).
Missing (Risk): The page has no instruction. Search engines will guess, which can be risky.
Frequently asked questions
Best practices for canonicalization
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