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JSON to TypeScript Generator

Developer

Instantly transform raw JSON objects into strongly-typed TypeScript interfaces and types.

Input JSON
Generated TypeScript
// TypeScript output will appear here...

About the Free JSON to TypeScript Generator

The JSON to TypeScript Generator parses raw JSON data and recursively builds strongly typed TypeScript definitions with interfaces or type aliases.

It handles nested objects, primitive types, array types, and gives you options to toggle between interface or type and mark all properties as optional.

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Privacy-First Guarantee

100% Client-Side. Your JSON payloads are parsed in your browser memory and never uploaded.

Frequently Asked Questions

Does it support nested objects?

Yes, it automatically creates sub-interfaces for every nested object with PascalCase naming.

Can I use type aliases instead of interface?

Yes, check the 'Use type instead of interface' checkbox to generate type definitions.

Is JSON to TypeScript Generator 100% free to use?

Yes! YourSmartToolKit provides unlimited access with no account creation, no signups, and zero daily caps.