JSON to TypeScript

JSON Input

TypeScript Definitions

export interface Profile {
  bio: string;
  avatarUrl: string;
  reputation: number;
}

export interface Preferences {
  theme: string;
  notifications: boolean;
}

export interface Metadata {
  lastLogin: string;
  ipAddress: string;
  preferences: Preferences;
}

export interface Root {
  id: number;
  name: string;
  email: string;
  isActive: boolean;
  roles: string[];
  profile: Profile;
  metadata: Metadata;
}

JSON to TypeScript converter ready.

Idiomatic TypeScript Schema Generation

Turns arbitrary JSON payloads, API responses, and database schemas into structured, strongly-typed TypeScript interfaces and type aliases.

Deep Object & Array ExtractionAutomatically analyzes nested objects and arrays, creating clean, reusable sub-interfaces with merged properties.

100% Client-Side PrivacyYour sensitive production JSON data is parsed and converted entirely inside your browser with zero network calls.

How to use JSON to TypeScript

Paste a representative JSON response or object.
Choose interfaces or type aliases and your field options.
Generate the types and review them before adding them to your project.

Try an example

{"id":1,"name":"Ramupod","active":true}

A type describing numeric id, string name, and boolean active. A sample cannot reveal every optional field or possible value.

What to know before using JSON to TypeScript

Paste a representative JSON example and choose your type settings. Generated types describe the sample; review optional fields and validate runtime data separately.