JSON to Java
Generate Java DTOs and review validation-oriented API models.
Avro Encode
Encode JSON into Avro binary with hex/base64 previews
Combine an Avro schema with a JSON message to inspect the binary payload as hex, base64, or a byte array. Great for debugging Kafka producers and wire formats.
When you reach for this
Silent consumer errors usually come from wire format mismatches. Encoding the same JSON locally lets you compare byte by byte with what a producer emits.
If you need the Confluent Schema Registry magic byte plus schema id, prepend that framing around the raw Avro bytes produced here.
Pairs well with
Jump to other JSON2Class utilities that naturally follow this one.
JSON to Kotlin
Review nullability and Kotlin data class structure quickly.
JSON to TypeScript
Turn API payloads into TypeScript interfaces for frontend work.
JSON Formatter
Format sample payloads before sending them back into the converter.