Developer

JSON → TypeScript Interface

Infer TypeScript interfaces, unions, and optional fields from JSON.

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Result

Waiting to start

No code generated yet.

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How it works

  1. Paste or edit a JSON sample.
  2. Set the root type name and, for C#, an optional namespace.
  3. Generate, copy, or download the code.
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FAQ

Is the JSON uploaded?

No. The JSON and generated code stay in your browser.

How are different object fields in arrays handled?

Fields are merged and missing fields become optional or nullable.