toolsko

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JSON to TypeScript Types

Generate a TypeScript type from a JSON example.

Tool inputs stay in your browser · optional AI search sends your query

Good to know: Infers types from a sample, not an API contract. Array inference examines at most the first 100 elements; fields are required as observed. Review optional fields and alternative responses manually. Nested depth is capped at 15.

How to use it (step by step)

  1. 1Type or paste your text into the “Input” box. There is already an example in it so you can see how it works; press Clear to start with your own.
  2. 2The answer appears right away in the “Result” box. No button needed.
  3. 3Press Copy and paste the result wherever you need it.

Words to know

JSON
A common text format apps use to store and send data, made of names and values in { } brackets.
cURL / API request
cURL sends a request to a web address from the command line. APIs are web addresses that return data for programs.
Array / list
An ordered collection of items, like ["apple", "banana"]. Every programming language has one.

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