JSON to Apache Avro Schema (.avsc) Generator
Generate Apache Kafka and Confluent Schema Registry compliant Avro record schemas from JSON.
Execution runs 100% locally inside the browser sandbox using HTML5 Canvas, Web Cryptography Subtle API, and Web Workers. No data is ever transmitted across the network.
Zero network latency. Operates completely offline with zero dependencies on third-party backend servers or cloud services.
Built according to official RFC specifications, cryptographic test vectors, and enterprise-grade data transformation standards.
How to Use JSON to Apache Avro Schema (.avsc) Generator
Paste sample JSON payload into the editor.
Specify the Avro record name and Java package namespace.
Copy or download the validated Apache Avro schema.
Frequently Asked Questions
Is this compatible with Apache Kafka?
Yes, generated Avro schemas are fully compliant with Kafka, Flink, and Confluent Schema Registry.
Are numbers mapped to long and double?
Yes, integers map to Avro `long` and floating point values map to `double`.
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