JSON to TypeScript

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TypeScript Interface

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Features

Strict type inference: automatically recognizes and generates TS base types like string, number, boolean, any[]
Flexible output format: supports generating Interface or Type aliases, meeting different TS coding conventions
Smart naming conversion: supports automatic conversion between PascalCase, camelCase, snake_case and more
Nested structure handling: automatically recursively generates sub-interfaces for deep nesting, keeping code structure clear
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FAQ

Does the tool generate TypeScript interfaces or types?

Both are supported. You can freely choose to generate `interface` or `type` based on your team's conventions. The tool automatically infers field types from JSON (such as string, number, boolean, any[]), and adds optional property markers (?) for fields that may be null.

Can it automatically convert camelCase keys to PascalCase?

Multiple naming conversions are supported. The tool has built-in smart naming conversion, allowing you to automatically convert JSON keys (like `user_id`) to PascalCase (`UserId`), camelCase (`userId`), or keep them as-is, perfectly matching your code conventions.

How does it handle complex nested JSON structures?

The tool has powerful recursive parsing capabilities. For deeply nested JSON objects, it automatically generates corresponding sub-interfaces or sub-types and correctly references them in parent interfaces, ensuring the generated TS code is well-structured and strictly typed, ready for large-scale project development.