Canonical Tag Tester | SEO Validation Tool

Canonical Tag Tester

Client-Side Canonical Tag Checker

Validate canonical URLs directly in your browser to ensure proper SEO implementation. All processing happens locally – no data leaves your computer.

Paste HTML

Enter URL

Paste your HTML code:

Enter URL to analyze:

Current Page URL (for comparison):

Analyzing HTML for canonical tags…

Your canonical URL is properly implemented

Canonical URL:

https://example.com/proper-canonical-url

Current Page URL:

https://example.com/current-page

Status:

Valid Implementation

Recommendation:

Your canonical tag is properly implemented and matches best practices.

Absolute URLs:

Always use absolute URLs (include https://)

Self-referencing:

Each page should have its own canonical tag

Single tag:

Only one canonical tag should be present per page

Consistency:

Ensure all signals point to the same canonical URL

All HTML processing happens in your browser – no data is sent to any server, ensuring complete confidentiality.

Get immediate feedback on your canonical tags with detailed validation reports.

Improve your search rankings by properly implementing canonical tags.