Generate interfaces from a representative JSON sample that includes all optional fields. Missing fields won't appear in the interface.
If a field can be null, include it as null in your sample. quicktype correctly types optional and nullable properties for maximum type safety.
For APIs with variant responses, include multiple samples separated by ---. The tool merges them into accurate union types.
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Deeply nested objects are automatically split into separate interfaces with proper cross-references. Five levels of nesting produce five clean interfaces.
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interface declarations, while JSON to Zod produces runtime validation schemas with the Zod library. Use TypeScript interfaces for compile-time type checking; use Zod when you need runtime input validation.Type[] or Array<Type>. When the JSON contains values of different types at the same position, the tool intelligently generates union types like string | number when appropriate.UserProfile), properties use camelCase (firstName). The tool also adds commented hints for detected date strings, URLs, and email fields to improve code documentation..ts file and import where needed.