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JSON to TypeScript

Generate TypeScript types and interfaces from JSON samples.

About JSON to TypeScript

JSON to TypeScript generates starter typings from real payloads, including nested objects and array shapes. It accelerates API integration by reducing manual type writing and helping teams align contracts quickly.

Why use JSON to TypeScript

  • Save manual typing time
  • Reduce schema drift
  • Bootstrap TS models quickly

How to use JSON to TypeScript

  1. Set root type name
  2. Paste valid JSON
  3. Generate and copy TypeScript

When to use JSON to TypeScript

  • Typing API responses
  • Migrating JS to TS
  • Creating mock contracts

Frequently Asked Questions

Does it support nested objects?

Yes, nested structures are inferred.

How are arrays handled?

Array item types are inferred from sample values.

Can it infer unions?

Yes for mixed sample values.

Does it validate JSON first?

Yes, invalid JSON is rejected with an error.

Is conversion local?

Yes.

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