{# canonical_base is the OWNING tenant's origin: all 16 Peasy domains serve the same catalogue, so a page rendered by a non-owner points its canonical at the owner instead of competing with it. Falls back to this site for static/self-owned pages. #}
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Canonical Tag Checker

Find and validate canonical URL tags in HTML

Free Browser-only No sign-up
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About Canonical Tag Checker

Paste your HTML to find the canonical URL tag and validate it. Check for common issues like missing canonical tags, relative URLs, and mismatched protocols.

How It Works

The tool searches HTML for tags and validates the href attribute. It checks for absolute URLs, HTTPS protocol, trailing slashes, and other common issues.

Step by Step

  1. 1 Paste your HTML source code
  2. 2 Click Check to find canonical tags
  3. 3 Review any warnings or issues found

Tips

  • Every page should have exactly one canonical tag
  • Always use absolute URLs (https://example.com/page/), not relative (/page/)
  • The canonical URL should match the page's preferred URL exactly
  • Use canonical tags to handle duplicate content from URL parameters

Frequently Asked Questions

What is a canonical tag?
A canonical tag (rel='canonical') tells search engines which version of a page is the 'original' when duplicate or similar content exists at multiple URLs.
Should canonical tags be self-referencing?
Yes. Best practice is for every page to have a canonical tag pointing to itself, confirming it is the preferred version.