Free Online Structured Data Tester

1. Copy the JSON-LD from your page's <script type="application/ld+json"> tag(s).
2. Paste it in — arrays and multiple blocks are detected automatically.
3. Review each detected @type and its property tree for accuracy.
4. Add any "missing required" fields first, then consider the recommended ones.
5. Re-paste after editing to confirm every entity is complete.

Structured data describes a page's content to search engines using the schema.org vocabulary, most often as JSON-LD. Done well, it makes a page eligible for rich results: review stars, FAQ accordions, recipe cards, breadcrumbs, event details and more. Each entity has a @type (Article, Product, FAQPage, Event, Organization, and so on) and a set of properties, some required by Google for rich-result eligibility and others merely recommended.

This tester is the broad counterpart to the strict Schema Validator. It parses the JSON-LD you paste, walks nested @graph arrays and arrays of objects so multiple entities are handled at once, and for each detected @type renders a clean property tree summarising every value. Crucially, it separates two lists: required properties that are missing (which can block rich results) and recommended properties that are absent (which can improve eligibility and presentation). Recognised types include Article, BlogPosting, Product, FAQPage, Recipe, Event, Organization, LocalBusiness, BreadcrumbList and Person.

All parsing happens locally in your browser — no Google API call, no upload — so you can safely inspect structured data for internal or unpublished pages. Pair it with the Schema Validator when you want a strict pass/fail syntax gate.