JSON to TypeScript
Accelerate your TypeScript development. Paste a JSON sample and get perfectly typed interfaces and types, including nested objects and arrays.
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aboutTool
JSON to TypeScript generates TypeScript interfaces or types from a JSON data sample. It eliminates the tedious work of manual type definition when working with complex API response structures.
howToUse
- Paste your JSON data into the editor
- Define a root interface name (e.g., UserProfile)
- Copy the generated TS code and use it in your project
- Check how nested objects are automatically handled as separate interfaces
features
- Parsing of deeply nested JSON objects
- Common type inference from array elements
- Optional property detection settings
- Automatic JSDoc comment generation
- Support for naming conventions (PascalCase)
- Real-time code transformation
faq
Does it scan the whole array?
Yes, it analyzes all elements to infer shared and optional properties accurately.
Interface or Type?
You can toggle between "interface", "type", and even "class" definitions in the settings.
How does it handle nulls?
Null values or missing keys are intelligently handled using optional marks (?) or union types.