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Smart JSON to TypeScript Converter

Convert JSON payload structures into clean, strongly-typed TypeScript interfaces instantly with AI edge detection.

Instant Results

100% Client-Side Privacy

100% Free Utility

JSON Input

Paste your JSON data to convert it to TypeScript interfaces

Options

Detect Enums (e.g., if a field has limited values)

Add Comments (AI explains the fields)

How to Use This Tool

The Smart JSON to TypeScript Converter is easy to use:

Paste your JSON: Copy and paste your JSON data into the input field. The tool accepts any valid JSON structure, including nested objects and arrays.
Configure options: Choose whether to detect enums automatically and whether to include AI-generated comments explaining each field.
Convert: Click the "Convert to TypeScript" button and let AI analyze your JSON structure.
Copy and use: Copy the generated TypeScript interface and paste it directly into your project. The output is ready to use with proper formatting and type safety.

Key Features

Smart Enum Detection

Automatically identifies fields with limited values and converts them to TypeScript enums or union types.

Date Recognition

Detects ISO date strings and adds helpful comments to indicate date fields in your interface.

Optional Field Detection

Intelligently marks fields as optional when they might not always be present in the JSON structure.

AI-Generated Comments

Get helpful comments explaining each field's purpose, making your code more maintainable and self-documenting.

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