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🧩 JSON to TypeScript

Generate TypeScript interfaces from any JSON sample. Paste JSON and get typed, nested interfaces ready to copy into your project.

Typing JSON responses in TypeScript

Manually writing interfaces for a large API response is slow and easy to get wrong β€” a missing optional field or a nested object you forgot shows up later as a runtime bug. Pasting a real sample into this generator produces accurate interfaces, including nested objects and arrays of objects, which you can paste straight into your project. For best results use a representative sample that includes every field the API can return; add a question mark to fields that are sometimes absent.

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