Infer TypeScript types and converters or Zod validation code from a JSON sample.
Paste a JSON object, array or primitive and choose TypeScript or Zod. Object arrays are inferred together, so missing fields can become optional. TypeScript includes a Convert helper. The final Zod ResultSchema (prefixed with Ibytes on collision) validates the original JSON value.
In [{"id":1,"name":"Ada"},{"id":2}], name can be inferred as optional while id is numeric.
Generated locally by quicktype in a worker. Limits: 100,000 characters, 40 levels, 20,000 values and 30 seconds per task. Date-like strings remain strings and sample values are not inferred as enums. Use strings for large integers. Install zod in your own project to use Zod output.
Why are some inferred types too broad or inaccurate? Samples cannot describe every business rule. Empty arrays have no element information and null does not describe future values. Use representative samples and review constraints.