Tools › Schema Markup Validator

Schema Markup Validator

Paste your JSON-LD and check it for valid syntax and the fields Google and AI engines expect for that schema type.

✓  Free · No account needed

Catch schema problems before Google does

Most structured data fails quietly. The JSON parses, the page looks fine, and months later you notice the rich results never appeared because a required field was missing or a type was misspelt.

Paste any JSON-LD below and we check the syntax plus the required and recommended fields for that schema type. Everything runs in your browser, nothing is sent anywhere.

🔍 Paste a single JSON-LD object, or a block containing “@graph”: […] with several — we’ll check each one.

Validates automatically as you paste or type — no button needed.

Paste your JSON-LD above to see the validation report.

This checks JSON syntax and the fields Google’s Rich Results guidelines and common AEO practice expect for each schema type. It does not call any external validator or store your input — everything runs in your browser. Schema types outside our checklist still get a JSON/syntax check.