Generate JSON Schema from TypeScript interfaces for validation and API docs
Enter TypeScript interfaces, types, or type definitions.
Our tool parses types and maps them to JSON Schema properties.
Copy the JSON Schema or download it for API documentation.
| TypeScript Type | JSON Schema Type | Description |
|---|---|---|
| string | "string" | Text values |
| number | "number" | Numeric values |
| boolean | "boolean" | True/false values |
| any | {} | Any type allowed |
| Array<T> | "array" + items | Array with typed items |
| interface | "object" + properties | Object with properties |
| enum | "string" + enum | String enum values |
| T | null | type: [..., "null"] | Nullable union type |
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