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📋 JSON Formatter

Format, minify, and validate JSON, with TypeScript, Go, Java, Python, and C# code generation.

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Format, minify, validate, and generate code from JSON. Convert JSON into TypeScript interfaces, Go structs, Java classes, Python dataclasses, or C# classes with inferred nested objects, optional fields, arrays, and unions. Input JSON and generated code are processed in the current browser and are not uploaded to LittleOne Tools servers. Generated types are developer-assist drafts and should still be reviewed against your project conventions.