JSON to TypeScript / Go / Python Model Generator

Generate TypeScript interfaces, Go structs, Python dataclasses, and Pydantic models from JSON
This free online json to typescript / go / python model generator runs in your browser and is part of our Developer Tools collection.

JSON to TypeScript / Go / Python Model Generator

Convert raw JSON objects into strongly-typed interfaces, structs, dataclasses, and Pydantic models automatically.

Highlights & Capabilities

  • TypeScript: Generates strict interfaces with optional types (?) and nested types.
  • Go: Generates PascalCase structs with standard `json:"field_name"` tags and proper pointer/slice handling.
  • Python: Generates clean @dataclass definitions using typing.Optional, List, and Dict.
  • Pydantic (v2): Produces BaseModel classes ready for FastAPI and modern data validation.

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