JSON to GraphQL SDL Schema Generator
Transpile JSON objects into GraphQL SDL type, input, Query, and Mutation schemas.
Execution runs 100% locally inside the browser sandbox using HTML5 Canvas, Web Cryptography Subtle API, and Web Workers. No data is ever transmitted across the network.
Zero network latency. Operates completely offline with zero dependencies on third-party backend servers or cloud services.
Built according to official RFC specifications, cryptographic test vectors, and enterprise-grade data transformation standards.
How to Use JSON to GraphQL SDL Schema Generator
Paste your JSON data into the source textarea.
Specify your main GraphQL type name.
Copy or download the generated schema.graphql file.
Frequently Asked Questions
Are nested objects and arrays supported?
Yes, nested JSON objects are extracted into distinct child GraphQL types.
Does it generate mutations?
Yes, it creates matching create, update, and delete mutations with input types.
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