React components with TypeScript need properly typed props and state. When you receive JSON data from an API, you need matching TypeScript interfaces for your useState hooks, context providers, and component props. This tool generates them from the actual data shape.
Generating Props Interfaces
Paste the JSON shape that your component receives as props. The generated interface becomes your React.FC<Props> type parameter. Nested objects get their own sub-interfaces, and arrays are properly typed with List<T>.
API State Management
When using useState with API data, TypeScript needs the state type: useState<UserData | null>(null). Generate the UserData type from a sample API response, and your entire component gets autocomplete and type checking.
Context Provider Types
React Context with TypeScript requires both the context value type and the provider props type. Generate interfaces from your context shape data, then use them with createContext<ContextType>() for fully typed global state.
Privacy & Security
All processing happens in your browser's local memory. Your data — whether it's API responses containing authentication tokens, Kubernetes cluster configurations, or database exports with PII — never touches any external server. JSON Studio is 100% client-side by design.