Entity Registry
An Entity Registry is a centralized database of all entities — brand, people, products, locations — used across a site's schema markup. It ensures that every page references the same canonical entities with consistent @id values.
Why Consistency Matters
When a site uses different representations of the same entity across pages — slightly different names, missing @id references, or conflicting properties — AI engines treat them as separate entities. This fragments the domain's knowledge graph and dilutes authority signals.
The Entity Registry solves this by maintaining a single source of truth. Every schema generation references the registry to pull the canonical version of each entity, ensuring that Google's Knowledge Graph and AI engines build a unified picture of the domain.
What It Stores
- Entity type — Organization, Person, Product, LocalBusiness, etc.
- Unique @id — A persistent identifier used across all pages
- Entity data — Name, description, sameAs links, image, and type-specific properties
- Schema associations — Which generated schemas reference this entity
Related Terms
- Schema-Stitch — Linking schema entities across pages using @id references
- Structural Pressure — The pillar that relies on Entity Registry for consistency