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JSON Workbench

The local-first debugging workspace for API developers.

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JSON to Kotlin Data Classes

For modern Android and backend developers, Kotlin's data class is the gold standard for state management. Our converter instantly parses complex JSON and emits perfectly formatted Kotlin files.

It handles nullable fields cleanly, generates val immutability by default, and perfectly prepares your objects for serialization libraries like Gson, Moshi, or kotlinx.serialization.