JSON to TypeScript & Zod Converter

Settings

JSON Input

TypeScript Interface

export interface Root {
  name: string;
  age: number;
  email: string;
}

About this Tool

Ultimate JSON to TypeScript & Zod Converter is a tool that generates the "types", "validations", and "mock data" necessary for Next.js development all at once, just by pasting JSON. It intelligently infers by analyzing the values within, significantly improving development efficiency.

Key Features

  • TypeScript Interface Generation: Automatically generates TypeScript interfaces from JSON structures. Supports nested objects and arrays.
  • Zod Schema Generation (Smart Inference): Analyzes values and key names to automatically generate appropriate Zod schemas. Automatically detects dates, emails, URLs, etc.
  • Mock Data Generator: Generates dummy data in array format based on the structure of the input JSON. Automatically avoids duplicate unique keys such as IDs.
  • Real-time Conversion: As long as the input is valid JSON, the output is updated in real time. You can check the results instantly.
  • JSON Formatter: Formats JSON with a single click, making it easier to read and edit.

Smart Inference Feature

This tool doesn't just perform simple type conversions; it intelligently infers by analyzing the content of values and key names:

  • Date: Automatically detects ISO8601 formatted date strings and generates z.string().datetime()
  • Email: If the key name contains "email" and the value is in email format, generates z.string().email()
  • URL: If the key name contains "url", "link", or "image" and the value is in URL format, generates z.string().url()
  • Optional: If the value can be null or undefined, .optional() or .nullable() is automatically added.

Privacy and Security

All processing is completed within the browser. The input JSON data is never sent to the server. Therefore, even JSON containing sensitive information can be safely converted.

Update Log

  • Initial release. Implemented TypeScript Interface generation, Zod Schema generation (Smart Inference), and Mock Data Generator.

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