JSON to TypeScript

Generate TypeScript interfaces from JSON data

Interface Name:

Use Interface (vs Type)

Make All Properties Optional

Input JSON

TypeScript Output

History

History is stored only in your browser locally

Enable History

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Features

Auto Generation

Automatically generates TypeScript interfaces from JSON

Nested Support

Creates separate interfaces for nested objects

Customizable

Choose between interface/type and optional properties

Local Processing

All generation happens in your browser

Frequently Asked Questions

What is a JSON to TypeScript Converter?

A JSON to TypeScript Converter automatically generates TypeScript interfaces or types from JSON data. This saves time when working with APIs and ensures type safety in your TypeScript projects.

How do I use this tool?

Paste your JSON data into the input field, optionally customize the interface name and settings, then click 'Generate TypeScript'. The tool will create TypeScript definitions that match your JSON structure.

What's the difference between interface and type?

Both define object shapes in TypeScript. Interfaces can be extended and merged, while types are more flexible for unions and intersections. For most cases, either works fine, but interfaces are conventional for object shapes.

How are nested objects handled?

The tool automatically creates separate interfaces for nested objects, giving each a descriptive name. This makes the generated code more readable and reusable.

What does 'Make All Properties Optional' do?

When enabled, all properties are marked with '?' making them optional. This is useful when working with partial data or APIs that don't always return all fields.

Is my data secure?

Yes, all conversion happens locally in your browser. Your JSON data is never sent to any server, ensuring complete privacy and security.