AI JSON to TypeScript Converter - Smart Interface Generator

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Smart JSON to TypeScript Converter

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.

About this tool

The Smart JSON to TypeScript Converter is an AI-powered tool that transforms JSON data into clean, professional TypeScript interfaces. Unlike traditional converters that rely on simple regex patterns, this tool uses advanced AI to understand the context and structure of your JSON, automatically detecting enums, date strings, optional fields, and complex nested objects.

Perfect for developers working with APIs, frontend developers integrating backend data, and anyone who needs to quickly generate type-safe TypeScript definitions. The tool generates production-ready code with proper formatting, JSDoc comments, and intelligent type inference that goes beyond basic pattern matching.

Frequently Asked Questions

How does this differ from standard JSON to TypeScript converters?

Standard converters use regex patterns to match basic types. Our AI-powered converter understands context - it detects when a field should be an enum (like status: 'active' | 'inactive'), recognizes date strings, identifies optional fields, and creates meaningful interface names based on the JSON structure.

What JSON formats are supported?

The tool supports any valid JSON format, including nested objects, arrays, null values, and complex data structures. Simply paste your JSON and the AI will analyze the entire structure to generate appropriate TypeScript interfaces.

How does enum detection work?

When enabled, the AI analyzes your JSON to find fields with limited, repeated values. For example, if a 'status' field only contains 'success', 'error', or 'pending', it will create a union type or enum instead of a generic string type.

Can I customize the generated TypeScript?

The tool provides options to enable/disable enum detection and comments. The generated code follows TypeScript best practices with proper formatting, but you can always modify it after copying to match your project's style guide.

Does the tool handle nested objects and arrays?

Yes! The AI creates separate interfaces for nested objects and properly types arrays. For example, if you have an array of user objects, it will create both a User interface and type the array as User[].

Is my JSON data stored or saved?

No. Your JSON is sent to the AI API for processing, but it's not stored permanently. The conversion happens in real-time and the data is not saved on our servers.

What if my JSON has inconsistent structures?

The AI will analyze the JSON structure and mark fields as optional (using ?) when they might not always be present. This helps create flexible TypeScript interfaces that match real-world API responses.

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