SEO fix guide
No Canonical Tag Detected
Without a canonical tag, search engines may index duplicate versions of this page.
Issue ID: SEO-CANONICAL-001
Severity: medium
Impact: Med
Effort: S
Use this article when
- You need deeper remediation guidance than the issue card can show.
- You want CMS-specific steps before handing the fix to a developer.
- You want a repeatable re-check path after shipping the change.
What this issue is
Without a canonical tag, search engines may index duplicate versions of this page.
Why it matters
Without a canonical tag, search engines may index duplicate versions of this page. This affects how clearly search engines understand the page and how persuasive it looks in search results.
How we detect it
- FreeSiteAudit flags this issue when the rule for SEO-CANONICAL-001 fails and the page evidence points to Head metadata.
- You can usually confirm this by checking the page source or the relevant page settings inside your CMS.
Evidence examples
Check the affected page source, rendered output, or relevant CMS setting to confirm the missing or incorrect element.
How to fix it
- 1Add <link rel="canonical" href="..."> in the <head>
- 2Point it to the preferred URL for this page
- 3Ensure the canonical URL is absolute, not relative
How to re-check it
- View source and confirm <link rel="canonical"> exists in <head>
Related tools
This issue is best verified with the full FreeSiteAudit crawl rather than a single-point mini tool.