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Schema.org Markup Validator

This is a placeholder documentation page for the validator.

This service will validate Schema.org-based structured data embedded in web pages.

Features

  • Extracts JSON-LD 1.0, RDFa 1.1, Microdata markup.
  • Displays a summary of the extracted structured data graph.
  • Identifies syntax mistakes in the markup.

It is based on the tool previously known as the Google Structured Data Testing Tool (SDTT), and is provided by Google as a service for the Schema.org community.

Notes

It can...

  • Fetch pages from URL, or validate markup provided directly.
  • Extract structured data injected by Javascript, e.g. by widgets.
  • Combine JSON-LD from script elements, alongside data the HTML attributes defined by RDFa and Microdata.
  • Apply some heuristics for cases where markup provides text values when an entity is expected.

Limitations

  • The tool is focused on Schema.org. In the case of JSON-LD, this means that it will not fetch or interpret other @context URLs.