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JSON

JSON to TypeScript

Generate readable TypeScript interfaces and type aliases from a representative JSON payload.

Type generator workspace

JSON example
TypeScript types

Types are inferred from the values in this example. Review optional fields and unions before using them in production.

Bootstrap API types

Turn an API response or fixture into a useful starting point for TypeScript without manually recreating every nested property.

Inference has limits

A single payload cannot reveal fields that may be optional or values not present in the example. Treat the generated result as a draft to review, not a formal contract.