Structured Data Validator

Structured Data Validator fetches a page and extracts every JSON-LD block it finds inside a script tag with type application/ld+json, checking that each one is valid JSON and listing the schema.org types it declares.

Use this after adding or editing structured data for rich results, or when a search console tool reports a structured data error and you want to see exactly which block is malformed without digging through the page source by hand.

This checks that the JSON itself parses and reports the declared types. It does not check the block against schema.org's full set of required and recommended properties for each type, which is a more involved validation Google's own Rich Results Test performs.