Structured Data Diagnostics
Schema & Structured Data Graph Validator
Test JSON-LD markup against Google Rich Results standards, Schema.org entity specifications, and AI Overview knowledge graph criteria.
Validate Live JSON-LD Schema Graphs
Inspects Organization, LocalBusiness, FAQPage, BreadcrumbList, and Product schemas.
Syntax & JSON-LD Integrity
Detects unescaped quotes, trailing commas, and malformed arrays in script blocks.
Rich Snippet Eligibility
Verifies required fields for Google Review Stars, FAQ Accordions, and Site Searchboxes.
Nested Graph Verification
Checks that @graph structures cleanly link parent entities to services and authors.