Schema.org

The Schema.org ontology provides foundational data types for information that is commonly found across the web. Search engines (such as Bing, Google, and Yandex) are the most common consumer of this data and will often use it to enhance results with more precise information.

Processor

Unlike other ontologies which are more data-focused and prefer strict compliance, Schema.org offers some allowances for a better implementation experience. By default, we take some extra steps for web-based documents that publish Schema.org-related data.

Statement Mapping to enforce consistent usage of Schema.org data types and IRIs within our tooling.

• Canonicalize IRIs — e.g. http://schema.org/ into https://schema.org/
• Drop Empty Literals — e.g. empty string dropped
• Map Enumerations — e.g. InStock string into schema:InStock IRI
• Cast Data Types — e.g. 2020-04-08 string into schema:Date datatype

Graph Validation to evaluate compliance to Schema.org recommendations and best practices.

• Invalid Term — e.g. schema:ExampleUnknown is not an official term
• Unexpected Object — e.g. DateTime is not valid for a Boolean property
• Unexpected Resource Type — e.g. resource with a Vehicle type is not valid for an author
• Actions: Unbound Property Annotation — e.g. schema:query-input property is not valid for a CreativeWork
• Actions: Invalid Property Annotation Constraint Key — e.g. placeholder is not a valid short-hand key
• Roles: Unpropagated Property — e.g. OrganizationRole from a member property must itself include member

Technical Notes

• Reference: schema.org
• Default Profile: Version 28.1