Convert JSON to Python Class Online
Manually translating a JSON payload into Python dataclasses or TypedDict definitions is tedious, especially for deeply nested API responses. This tool generates typed Python class definitions from any JSON, producing either dataclass or TypedDict output depending on your preference. Field names are converted to snake_case, and types are inferred from the values. Everything runs in your browser, making it safe to use with confidential payloads. It is especially useful when building typed Python clients for REST APIs or data pipelines that require structured input validation.
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python dataclassREADY
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FAQ
- Does it generate dataclasses or TypedDicts?
- The tool generates Python dataclass definitions by default. TypedDicts are also supported and are useful for passing typed dicts to APIs without instantiating objects.
- Are field names converted to snake_case?
- Yes. camelCase and PascalCase JSON keys are automatically converted to snake_case following Python naming conventions.
- What Python version is required?
- The generated code targets Python 3.7+ for dataclasses and Python 3.8+ for TypedDicts. Optional fields use Optional[type] from the typing module.