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blackdroid.dev

JSON Schema to Code

Generate type models from a JSON Schema online — TypeScript interfaces, Java records, Python dataclasses, Go, Rust and more. $ref, allOf and required handled.

TypeScript output
// Generated by blackdroid.dev

export interface User {
  id: number;
  name: string;
  email: string;
  role?: string;
  score?: number;
  tags?: string[];
  address?: Address;
}

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

About JSON Schema to Code

Paste a JSON Schema and get ready-to-use type declarations in 11 languages — TypeScript, JavaScript (JSDoc), Java records or classes, Kotlin, Python dataclasses, Go, Rust, Swift, C#, C++. Required vs optional properties, nested objects and arrays are all mapped.

Internal $ref pointers (including #/$defs and recursive references), allOf merging, enum/const literals and type unions like ["string","null"] are resolved — anything unsupported degrades gracefully with a visible warning. Everything runs locally in your browser.