GraphQL Schema to TypeScript Interface Converter
Convert GraphQL SDL type schemas into strongly typed TypeScript interfaces with optional field mapping.
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 GraphQL Schema to TypeScript Interface Converter
Paste your GraphQL SDL type schemas (type User { ... }).
Review the mapped TypeScript interfaces and optional/required fields.
Copy the TypeScript definitions or download the types.d.ts file.
Frequently Asked Questions
How are non-null fields handled?
GraphQL fields ending with an exclamation mark (!) are mapped to required TypeScript fields, while others are mapped as optional (field?: type).
How are GraphQL lists converted?
[String!] and [User!] are automatically mapped to string[] and User[].
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