Free Canonical Tag Checker
Check canonical tags on any URL. Find missing, self-referencing, or conflicting canonicals that confuse search engines.
Website URL to analyze
Scanning your site...
Checking crawlers, sitemap, and page scores
Generated file
SEO & AI visibility report
Executive summary
The most important result in one scan
Score overview
Overall health and issue counts
Core scorecards
Crawlability, indexability, previews, AI readiness, and content visibility
Full-site audit
Every public page discovered from your sitemap and navigation
Public crawler vs rendered content
What bots receive in the first HTML response vs estimated fully-rendered content
Bot visibility
How each major crawler likely experiences your homepage
What crawlers receive
Public HTML response — server-rendered content bots can read without JavaScript
Findings summary
Severity breakdown before detailed fixes
Recommended actions
Priority-ordered plan based on discoverability risk
Detailed findings
Canonical tags tell search engines which URL is preferred when duplicates exist. Scan your page to verify the canonical is present and points to the right URL.
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Questions about this tool
Why do canonical tags matter? ▼
They tell search engines which URL is preferred when duplicate or similar pages exist, reducing index bloat.
What if my canonical points elsewhere? ▼
Search engines may index the canonical target instead of the scanned URL. Align canonicals with your intended indexable page.