ToolPilot
Developer

JSON to TypeScript

Generate TypeScript interfaces or types from a JSON sample in one click.

Turn an API response into typed models. Nested objects, arrays and optional fields are detected automatically, with a root name you control.

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Privacy: A fast, private ToolPilot utility. Your data is processed locally in your browser whenever possible.

How to

  1. 1Paste a JSON sample.
  2. 2Set the root type name and options.
  3. 3Copy the generated TypeScript.

Frequently asked questions

How are optional fields detected?

A field must be present in every object of an array to be required. Missing keys produce optional properties.

Are my files uploaded to a server?

No. This tool runs entirely in your browser using JavaScript and WebAssembly where needed. Your files and text never leave your device.

Help Us Improve

We regularly improve our tools. Found a problem or have a suggestion? We're listening.

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