Google Rich Results Test
Check whether a page can show rich results in Google Search
The Rich Results Test checks whether a page's structured data makes it eligible for rich results in Google Search, such as product, review snippet, recipe, event or breadcrumb features. You can test a live URL or paste code. The tool renders the page the way Google's crawler would, lists the structured data items it detects, and reports errors that prevent eligibility and warnings about missing recommended properties.
It only covers the structured data types Google supports for rich results. Passing the test means a page is eligible; Google still decides whether to show a rich result for a given search. For general schema.org validation beyond Google's features, use the Schema Markup Validator.