Canonical URL Checker & Analyzer
Detect and analyze canonical URLs for SEO optimization and duplicate content prevention
Canonical Detection
Find canonical URLs from multiple sources
SEO Analysis
Check for proper canonical implementation
Issue Detection
Identify canonical errors and warnings
Performance
Fast, accurate analysis with detailed reporting
toolslovers.com
example.com
moz.com
Analysis Results
0 canonicals found
Ready to Analyze
Enter a URL and click "Check Canonical" to analyze canonical URLs
Canonical URLs help prevent duplicate content issues
Always use absolute URLs in canonical tags
Detected Canonical URLs
| Source | Canonical URL | Status | Type | Actions |
|---|---|---|---|---|
|
No canonical URLs analyzed yet. Enter a URL and click "Check Canonical" |
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What Are Canonical URLs?
Canonical URLs tell search engines which version of a webpage is the "master" version when duplicate or similar content exists.
- rel="canonical": HTML tag specifying the preferred URL
- Link Header: HTTP header for canonical URLs
- Open Graph: og:url for social media canonical
- Sitemap: URLs listed in XML sitemap
- Self-referencing: URL points to itself (best practice)
Best Practices
- Always use absolute URLs (with https://)
- Use self-referencing canonicals on all pages
- Consistent canonical across all sources
- Avoid circular canonical references
- Check HTTP headers for additional canonicals
- Verify canonical matches the actual indexed page
Common Issues
- Relative URLs in canonical tags
- Conflicting canonical URLs
- Missing canonical on important pages
- Canonical pointing to non-existent pages
- Circular canonical references
- Different canonicals across sources