JSON to Code

The tool generates typed code in 8 languages: TypeScript interfaces, Python dataclasses, Java POJOs, Go structs with json tags, C# classes with properties, Kotlin data classes, Rust structs with serde, and Swift Codable structs.

The generator analyzes each JSON value to determine its type. Strings become string types, integers become int/Int/i64, floats become float/Double/f64, booleans become bool/Boolean, null becomes the language's nullable type, and nested objects become named types.

Yes. Use the Root Type input field to change the name of the top-level generated type. Nested types are automatically named based on their JSON key names using PascalCase convention.

Nested objects automatically generate their own named types (classes, structs, or interfaces depending on the language). Arrays of objects generate a separate type for the array element, with the type name derived from the singularized key name.