JSON to Kotlin
NewGenerate Kotlin data classes with Gson annotations from JSON data.
convertkotlindata-class
Read the guideShortcuts:⌘ KSearch?HelpD MDark modeG TAll tools
Properties are normalized to camelCase.
@SerializedName is added only when required.
Continue with:
Frequently Asked Questions
Why did my JSON keys become camelCase properties?
Property names are normalized to camelCase for Kotlin. If that changes the original key, the tool adds @SerializedName so Gson can still bind the JSON correctly.
How are nulls represented?
If the sample contains null for a field, the generated type becomes nullable and the constructor parameter gets = null.
What types does it choose for numbers and arrays?
Integers become Long, decimals become Double, and empty arrays fall back to List<Any>.
Will it inspect every object in an array?
It merges schemas across array items, but a key missing from one object does not become optional automatically. Only sampled nulls make a property nullable.
What happens for top-level primitives or arrays?
Those become a typealias instead of a data class. Object roots become data classes.