JSON to TypeScript Converter
Convert JSON into copyable TypeScript types and interface definitions.
Generated TypeScript definitions will appear here
Usage, example, and limits
Usage
- Provide valid JSON that covers the important fields and nested shapes.
- Review the root name, array element types, and optional fields after generation.
- Use the real contract to add unions, enums, nullability, and documentation.
Limits
- Fields absent from the sample cannot be inferred.
- Null values, empty arrays, and mixed arrays provide limited or broad type information.
- Generated output is a starting point, not a replacement for OpenAPI, JSON Schema, or a backend contract.
Example
- Input
{"id":1,"name":"KitOtter"}- Output
An interface draft with a number id and string name
One sample only describes observed values and cannot prove that fields are always required.
Data handling
Input and results are processed only in the current browser tab. KitOtter does not upload, store, or analyze them to complete this task.