Google recommends that you start with the Rich Results Test to see what Google rich results can be generated for your page. For generic schema validation, use the Schema Markup Validator to test all types of markup, without Google-specific validation.

The official Google tool for testing your structured data to see which Google rich results can be generated by the structured data on your page. You can also preview how rich results can look in Google Search.

Validate all structured data that's embedded in web pages, without Google feature specific warnings.

We removed Google-specific validation from the Structured Data Testing Tool and migrated the tool to a new domain, Schema Markup Validator. Learn more about the change in our blog post.