Instantly generate TypeScript interfaces, C# classes, Go structs, and Java classes from JSON APIs.
What we do
Stop writing data models by hand. Paste any raw JSON response from an API, and we instantly generate the structural blueprints (Interfaces, Classes, or Structs) required for your language.
Whether you are building frontend React apps (TypeScript), robust backends (C#, Go, Java), or data-science pipelines (Python), our engine tailors the syntax perfectly to your ecosystem.
Complex APIs often return deeply nested objects and arrays within arrays. Our intelligent parser recursively maps every depth layer, automatically naming and creating sub-classes for you.
Our engine accurately detects integers, floating-point numbers, booleans, strings, and null values, translating them into the correct native types (e.g., distinguishing `int` vs `double` in C#).
Control your code structure. Easily rename the top-level root object right from the toolbar, and all dependent interfaces and arrays will inherit your custom naming convention seamlessly.
Testing with sensitive API payloads or proprietary backend data? Your JSON is completely safe. The conversion engine runs entirely locally in your browser, and data is never sent to our servers.