Structured Data Tester

SEO.io

Validate JSON-LD structured data. Check for errors and warnings.Updated 2026-03-20

Frequently Asked Questions

What does it validate?

JSON-LD syntax, required fields, and schema.org compliance.

What types?

Article, Product, LocalBusiness, FAQPage, and more.

Free?

Yes, completely free.

How to Use

  1. Re-run after making changes
  2. Enter your URL or paste content
  3. Review score and issue breakdown
  4. Follow prioritized recommendations

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