Instantly create strict TypeScript interfaces and types from a JSON payload.
Stop writing types by hand! The Free JSON to TypeScript generator does it for you. Known as the Best JSON to TypeScript utility, it automatically infers types to output a perfect json to ts interface code block.
TypeScript requires defined types to provide autocomplete and catch errors at compile-time. Generating interfaces from real API data saves hours of manual typing.
It recursively generates new, separate interfaces for nested objects and references them in the root interface.
If a value is null and the tool cannot infer the type, it usually defaults to "any" or "unknown", which you can manually refine later.
Yes! It will define the object type and type the property as an Array of that interface (e.g., `items: Item[]`).
Yes, it automatically generates separate TypeScript interfaces for nested objects.
By default, it names it 'RootObject', but you can easily rename it in your code.
If an array contains objects with varying keys, it attempts to mark missing keys as optional.
Yes, this free json to typescript interface generator is fully accessible.
Yes, it creates nested interfaces automatically when converting your json to ts interface.