JSON → Types

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Paste a JSON sample and get a TypeScript interface, Zod schema, Go struct, or JSON Schema.

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Root type name

Named types

Output lines

JSON input

TypeScript output

export interface Root {
  id: number;
  name: string;
  price: number;
  active: boolean;
  nickname: null;
  tags: string[];
  meta: Meta;
  items: Item[];
  extras: Extras;
  history: unknown[];
}

export interface Meta {
  createdAt: string;
  views: number;
}

export interface Item {
  sku: string;
  qty: number;
  note?: string;
}

export type Extras = Record<string, unknown>;

Types are inferred from one sample payload — widen unions by hand if the API can return extra shapes.