DEVELOPER
JSON to TypeScript
Paste your JSON data to automatically generate production-ready TypeScript type definitions and interfaces. Custom property naming, optional keys detection, and instant shareable URLs.
JSON to TypeScript
Convert JSON structures into TypeScript interfaces automatically.
JSON Input
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TypeScript Output
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Type-Safe TypeScript Generation from JSON
TypeScript interfaces help catch runtime errors before code reaches production. Manually typing large API responses or configuration structures is tedious and error-prone.
This tool parses any valid JSON structure and recursively constructs clean, idiomatic TypeScript interfaces that can be copied directly into your codebase.
How to use this tool
- Paste your raw JSON object or array into the input editor.
- Review the generated TypeScript interface in the output pane.
- Copy the generated TypeScript types or generate a shareable URL.
Examples
Conversion from JSON to TypeScript interfaces.
User Profile Object
{"id": 1, "name": "Alex", "active": true}
- Interface
- export interface Root { id: number; name: string; active: boolean; }