JSON Schema to TypeScript interface

Paste a JSON Schema, get a typed interface. Nothing you paste is stored.

Paste a JSON Schema (or an OpenAPI document; every entry in components.schemas becomes its own type) and get TypeScript interfaces. Nothing is guessed: required drives optionality, format drives the type mapping, and string enums keep their length.

Read from the schema you paste, on the server, discarded after the response.

Try it on your own schema

Example

JSON Schema in:

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "Product",
  "type": "object",
  "required": ["id", "sku", "name", "price"],
  "properties": {
    "id": {"type": "integer", "format": "int64"},
    "sku": {"type": "string", "maxLength": 40},
    "name": {"type": "string", "maxLength": 200},
    "price": {"type": "number", "format": "double"},
    "status": {"type": "string", "enum": ["draft", "published", "archived"]},
    "created_at": {"type": "string", "format": "date-time"}
  }
}

Generated:

Product.ts

export interface Product {
  id: number;
  sku: string;
  name: string;
  price: number;
  status?: string | null;
  createdAt?: string | null;
}

Schemint

JSON Schema to TypeScript interface

Example

Related