JSON ↔ TypeScript Interfaces

Convert JSON into TypeScript Interfaces – and back.

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What is the JSON ↔ TypeScript Interfaces Tool?

The JSON ↔ TypeScript Interfaces tool converts JSON objects into TypeScript interfaces and can also generate mock JSON from simple TypeScript definitions. Developers can quickly transform API responses, data models or example payloads into clean TypeScript types without manual writing. This makes it ideal for TypeScript projects, frontend development, backend modeling and API integration. All conversions run fully client‑side, ensuring privacy and instant performance. A fast and efficient way to keep JSON and TypeScript in sync.