🧩 Free tool

Free Schema Markup Tester

Validate the JSON-LD structured data on your page — Organization, FAQ, Product, Article, and more. The Free Schema Markup Tester is 100% free — enter your URL, and we send the full report straight to your inbox.

Free · No signup · Report emailed in ~1 minute

What is the Free Schema Markup Tester?

The Free Schema Markup Tester extracts and validates the structured data on your page. It detects which schema.org types you publish — Organization, FAQPage, Product, Article, BreadcrumbList — checks JSON-LD validity, and flags the high-value types you are missing. The full breakdown is emailed to you.

What the Free Schema Markup Tester checks

  • All JSON-LD blocks on the page and whether they parse as valid schema.org
  • Which important types are present: Organization, FAQPage, Product, Article, BreadcrumbList, Review
  • Missing high-value schema types that AI engines and rich results rely on
  • OpenGraph and Twitter card tags for AI and social previews
  • Whether entities are cross-linked with stable @id references
  • Fabricated or self-serving markup that can trigger manual actions

How it works

  1. 1

    Enter your URL

    Paste any page — we read every JSON-LD and meta block it ships.

  2. 2

    We validate the markup

    We parse each schema type, check validity, and compare against the types AI engines expect.

  3. 3

    Get your report by email

    You receive the detected types, the gaps, and copy-ready schema recommendations.

Frequently asked questions

What is schema markup?

Schema markup is structured data (usually JSON-LD) added to a page so search and AI engines can understand its entities — your organization, products, FAQs, and articles — instead of guessing from raw text.

Which schema types matter most for AI?

Organization, FAQPage, Product, Article, and BreadcrumbList are the highest-value types. Together they help AI engines resolve who you are, what you offer, and how your pages relate.

Does this validate JSON-LD?

Yes. It parses every JSON-LD block on the page, reports which schema.org types are present and valid, and flags what is missing or malformed.

Is the Free Schema Markup Tester really free?

Yes. You can scan a website at no cost and receive the full report by email. There is nothing to install and no credit card required.

Also known as

The same free tool, by the names people search for it:

Schema Markup CheckerSchema Markup ValidatorSchema Markup TesterSchema Markup AnalyzerSchema Markup AuditStructured Data CheckerJSON-LD CheckerRich Results CheckerFree Schema Markup CheckerOnline Schema Markup CheckerInstant Schema Markup CheckerFree Schema Markup Validator

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