JSON to Code

Generate TypeScript, JavaScript, Java, Python, Go and C# classes from JSON online for free. Type-safe model generation in your browser.

Root class name

JSON input

{
  "id": 42,
  "name": "Ada Lovelace",
  "email": "ada@example.com",
  "active": true,
  "balance": 19.5,
  "address": {
    "street": "12 St James's Square",
    "city": "London",
    "zip": "SW1Y 4RB"
  },
  "roles": ["admin", "editor"]
}

TypeScript output

// Generated by blackdroid.dev

export interface Root {
  id: number;
  name: string;
  email: string;
  active: boolean;
  balance: number;
  address: Address;
  roles: string[];
}

export interface Address {
  street: string;
  city: string;
  zip: string;
}

About JSON to Code

Paste a JSON document and get ready-to-use model classes in TypeScript, JavaScript (JSDoc), Java (records or classic classes), Python (dataclasses), Go (structs) or C#.

Nested objects become their own types, optional and nullable fields are detected, and repeated array shapes are merged. Everything is generated locally — your data never leaves the browser.