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Free Schema Markup Validator

Check JSON-LD structured data for valid JSON, declared schema types and common structural problems. Review your markup before publishing it or before moving on to search-engine-specific rich-result testing.

How this free tool helps

This tool catches JSON syntax problems and reports declared @type values. Rich-result eligibility has additional search-engine-specific requirements.

Use the result as part of a wider SEO review

SEO decisions are strongest when technical checks are reviewed together with page quality, search intent and site structure. Use the result here as evidence for the specific task, then verify important changes on the live website.

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Frequently Asked Questions

What does the Schema Markup Validator check?

It checks JSON-LD blocks for valid JSON and identifies declared schema types and basic structural issues the tool can determine from the supplied markup.

Is this a replacement for Google Rich Results Test?

No. Search engines apply product-specific eligibility rules that can change. Use this validator for markup quality, then use the relevant official testing tools when rich-result eligibility matters.

Can valid JSON-LD still be misleading?

Yes. Structured data should accurately represent visible page content. Technically valid markup that describes information not present on the page can still be inappropriate.