Multiple canonical tags found: what it is, why it matters, and how to fix it
This page contains more than one canonical tag, either as multiple link elements or a combination of link element and HTTP header. Google may ignore all canonicals when multiple conflicting signals are present.
Where this fits: metadata in SEO
Why multiple canonical tags found hurts your rankings
Multiple canonical tags with different URLs create conflicting signals that Google may resolve by ignoring all of them and choosing its own canonical. This defeats the purpose of canonical tags and can lead to the wrong URL being indexed, duplicate content issues, and diluted ranking signals.
This is a high-severity issue: it directly suppresses rankings or click-through on the pages it affects. It belongs in your current sprint, prioritised by how many pages carry it.
How to fix it
Ensure only one canonical tag exists per page. Check for canonicals added by CMS plugins, themes, CDN configurations, and HTTP headers (Link header). If both an HTML link tag and HTTP Link header exist, they must agree.
Frequently asked questions
What does "Multiple canonical tags found" mean?
This page contains more than one canonical tag, either as multiple link elements or a combination of link element and HTTP header. Google may ignore all canonicals when multiple conflicting signals are present.
Why does multiple canonical tags found matter for SEO?
Multiple canonical tags with different URLs create conflicting signals that Google may resolve by ignoring all of them and choosing its own canonical. This defeats the purpose of canonical tags and can lead to the wrong URL being indexed, duplicate content issues, and diluted ranking signals.
How do I fix multiple canonical tags found?
Ensure only one canonical tag exists per page. Check for canonicals added by CMS plugins, themes, CDN configurations, and HTTP headers (Link header). If both an HTML link tag and HTTP Link header exist, they must agree.
How serious is this issue?
This is a high-severity issue: it directly suppresses rankings or click-through on the pages it affects. It belongs in your current sprint, prioritised by how many pages carry it. It belongs to the metadata family of checks.
How do I find every page affected by this on my site?
Run a free Dr Urls audit: it crawls your site, detects multiple canonical tags found on every affected page, shows example URLs, and generates a ready-to-use fix task. Re-scan after fixing to verify the issue is gone.
Does your site have this issue?
A free Dr Urls audit crawls your site, finds every page affected by multiple canonical tags found, and hands you a ready-made fix task.
Check my site free