Free to use, no account
Schema Markup Validator
Check pasted JSON-LD syntax and compare declared Schema.org terms with a small, versioned vocabulary. Nothing is sent to a validation API.
How do I validate Schema.org markup?
Paste a JSON-LD object or graph and validate it. The checker reports invalid JSON and flags terms not found in its pinned Schema.org vocabulary. It does not evaluate every JSON-LD feature or test a page in Google.
Frequently asked questions
How do I validate Schema.org markup?
Paste a JSON-LD object or graph and validate it. The checker reports invalid JSON and flags terms not found in its pinned Schema.org vocabulary. It does not evaluate every JSON-LD feature or test a page in Google.
Is my structured data uploaded?
No. Your pasted markup is checked in this browser. A compact Schema.org vocabulary file is loaded from UsefulVerse only when you run the check; the markup itself is never sent.
Does a valid result guarantee a Google rich result?
No. This tool checks JSON syntax and vocabulary terms, not Google feature requirements or eligibility. Google may choose not to show a rich result even when markup is valid.
Does the validator download remote contexts or my page?
No. It never fetches user-provided URLs or remote @context files. It loads only its version-pinned vocabulary asset from UsefulVerse after you start validation.