Free tool · runs in your browser
JSON-LD Schema Validator
Paste your structured data and instantly see whether it parses, every @type it declares, and what essentials are missing. Clean schema is the foundation of being cited by AI engines.
Why structured data matters for AI
AI Overviews, ChatGPT and Perplexity build knowledge graphs from machine-readable data. Clean Schema.org objects help them disambiguate your brand, products and authors — and decide your page is trustworthy enough to cite. Valid, self-consistent JSON-LD is table stakes for GEO.