Canonical Tag Checker is a free, browser-based search engine optimisation tool. Fetch any URL and check its canonical tag value. Detect self-referencing canonicals, missing tags, and mismatches.
SEO specialists, content marketers, website owners, and digital agencies use Canonical Tag Checker every day to save time and skip the overhead of desktop software or paid services. No installation, no account, and no technical knowledge required — just paste your content into Canonical Tag Checker and get results in seconds. Your files never leave your browser — full privacy by design.
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How to use Canonical Tag Checker
1
Enter URL
Paste the page URL to check.
2
Check
The canonical tag value is extracted.
3
Analyze
See if it's self-referencing, missing, or pointing elsewhere.
Use Cases
- Optimising new pages before publishing to ensure technical correctness
- Auditing existing pages for crawlability and structured data issues
- Preparing JSON-LD schemas for rich results in Google Search
- Monitoring and improving search snippet appearance and CTR
Key Benefits
- 100% free with no usage limits, watermarks, or hidden fees
- No account or sign-up required — use it instantly
- Works in all modern browsers on desktop, tablet, and mobile
- Privacy-first: all processing runs locally, files never leave your device
- Actionable insights with clear, readable output
- Detailed breakdown with specific recommendations