JSON Code Generator

Generate starter models for Zod, Rust, Kotlin, or Swift from a JSON sample.

Generate code from JSON

JSON Code Generator creates starter types for Zod, Rust with Serde, Kotlin, and Swift from a representative JSON sample. Nested objects, arrays, strings, numbers, booleans, and null values are mapped to useful type declarations for a quick starting point.

Generated code should be reviewed against additional examples before production use because one JSON sample cannot show every optional field or union. The conversion is performed locally in your browser, so API responses and configuration data stay on your device.

Choose the target that matches the library or language used by your project, then treat the generated text as an editable scaffold. Add naming rules, optional properties, validation constraints, and serialization settings before integrating it into an application.

For reliable type generation, provide a representative sample that includes nested fields and realistic values. Generated code is not a schema migration or a guarantee of optionality, so compare it with your API contract and adjust it before shipping.

Use the copy control to move a checked result into another local development workflow.