JSON to Avro Schema Generator

Generate Apache Avro schemas from JSON data automatically. Perfect for Kafka producers, data pipelines, and Schema Registry configuration.

Input JSON
Drop JSON file here
Avro Schema Output

Features

📡 Avro Type Inference

  • string, int, long, double, boolean
  • Nested object → inline record
  • Array type inference
  • Null → nullable union types

⚡ Kafka Ready

  • Compatible with Schema Registry
  • Namespace support
  • Valid Avro JSON format
  • Download as .avsc file

🎯 Flexible Options

  • Custom record name
  • Custom namespace
  • Optional nullable unions
  • Optional doc comments

Avro Schema Guide

Avro Schema Structure

Apache Avro schemas are defined in JSON. A record schema has a type, name, namespace, and a list of fields with names and types. 

{
  "type": "record",
  "name": "User",
  "namespace": "com.example",
  "fields": [
    {"name": "id", "type": "long"},
    {"name": "email", "type": ["null", "string"]}
  ]
}