JSON to Code Generator
Turn any JSON sample into TypeScript, Go, Python, Kotlin or a JSON Schema — type inference runs entirely in your browser. Free and private.
Everything runs in your browser — your JSON never leaves your device.
1
About JSON to Code Generator
The JSON to Code generator turns any JSON sample into typed source code: TypeScript interfaces, Go structs, Python dataclasses, Kotlin data classes or a JSON Schema. Paste an API response, name the root type, pick the target and copy the generated definitions — no more hand-writing models for every endpoint.
Type inference walks the whole document: nested objects become nested types, arrays are inspected for element types, and null or missing values are surfaced so you can decide about optionality. Field names are converted to each language's conventions.
Inference runs entirely in your browser — your JSON, which often contains real API data, never leaves your device. Invalid input is flagged immediately, and the result can be copied or downloaded as a source file.
How to use JSON to Code Generator
- Paste a JSON sample — typically a real API response — into the input pane, or load the sample.
- Choose the target: TypeScript, Go, Python, Kotlin or JSON Schema.
- Set the root type name that the top-level object should get.
- Review the generated definitions, fixing the input if the tool reports invalid JSON.
- Copy the code or download it as a file for your project.