Canonical URL Checker
SEO.io
Check canonical tags on any webpage. Verify proper URL canonicalization.Updated 2026-03-20
Frequently Asked Questions
What is canonical?
A tag that tells search engines the preferred URL for a page.
Why is it important?
Prevents duplicate content issues in search results.
Free?
Yes, completely free.
How to Use
- Follow prioritized recommendations
- Re-run after making changes
- Enter your URL or paste content
- Export report for your team
FAQ
Does it affect my site?
No. The tool only reads your page — it makes no changes to your site.
Can I check competitor pages?
Yes, analyze any publicly accessible URL to understand what top pages do right.
How often should I run this check?
After significant content or technical changes. Weekly checks help catch issues early.
Does it check what Google checks?
Analyzes factors known to influence rankings based on Google documentation and research.
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