Features

Instant Detection

Quickly find the canonical tag hidden in the HTML source code without digging manually.

Self-Reference Check

Verify if a page is self-referencing (canonical points to itself), which is a standard best practice for unique content.

Absolute Path Validation

See the full resolved URL of the tag to ensure you aren't using relative paths that confuse crawlers.

Duplicate Content Shield

Ensure your syndication or cross-posting strategy is safe by pointing back to the original source.

About Canonical URL Checker

The Canonical URL Checker is a specialized SEO utility designed to help you verify the 'rel=canonical' tags on your webpages. Canonical tags are the definitive signal to search engines about which version of a page is the 'master' copy. Incorrect or missing canonical tags can lead to massive SEO issues, including duplicate content penalties, split PageRank (link equity), and the wrong pages appearing in search results. This tool fetches your page, parses the HTML headers, and instantly tells you if a canonical tag is present and where it points.

How to Use Canonical URL Checker

Enter Page URL

Paste the full address of the page (e.g., 'https://site.com/page-a') you want to audit.

Analyze

Click 'Find Canonical' to fetch and parse the live HTML properties.

Verify Result

Check if the canonical tag exists and if it matches the URL you entered (Green checkmark).

Fix Issues

If the tool shows 'Missing' or an incorrect URL, update your site's header code immediately.