Free Tool
Free Schema Markup Validator
Paste JSON-LD or a full page’s HTML. We extract every schema block, check the JSON syntax, and flag missing recommended properties for common types. No sign-up needed.
Updates automatically as you edit, too.
This checks structure only, valid JSON-LD, a schema.org context, and commonly-required properties for the type. It does not check Google’s live rich-result eligibility, use Google’s own testing tools for that.
Paste JSON-LD or HTML and click Validate to see results.
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