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Avro Schema Compatibility Inspector

Inspect Avro schemas locally with avsc, compare schema evolution in both directions, calculate canonical fingerprints, and encode or decode sample records.

Schemas and records stay in this browser
No schema, record, field name, namespace, binary data or filename is uploaded or placed in anonymous analytics.

Schema, compatibility and codec inputs

Schemas and JSON inputs: 2 MiB each. Binary input: 5 MiB.

Load a sample or paste an Avro schema

Schema structure, resolver compatibility, fingerprints and codec results will appear here.

Compatibility uses Avro writer-reader resolution. Registry products may apply different subject scope, transitive history and policy settings; verify against the target registry.

About Avro Schema Compatibility Inspector

Validate schemas, test writer-reader compatibility and run real Avro codecs. Inspect Avro schemas locally with avsc, compare schema evolution in both directions, calculate canonical fingerprints, and encode or decode sample records. The core workflow is designed to run in your current browser.

Key capabilities

  • Inspect records, enums, arrays, maps, unions, logical types and named references
  • Build real writer-reader resolvers in backward, forward and full modes
  • Validate records and encode or decode actual Avro binary data
  • Generate a normalized form and SHA-256 fingerprint

Useful for

  • Review a registry change before publishing a new version
  • Check producer and consumer compatibility during Kafka schema evolution
  • Validate and encode sample records against the writer schema

Frequently asked questions

Is Avro Schema Compatibility Inspector free to use online?

Yes. Avro Schema Compatibility Inspector opens in a modern browser and does not require desktop software installation.

What is Avro Schema Compatibility Inspector useful for?

Common use cases include Review a registry change before publishing a new version; Check producer and consumer compatibility during Kafka schema evolution.

Is my input or file uploaded?

The core processing workflow is designed to run locally in the browser. Key capabilities include Inspect records, enums, arrays, maps, unions, logical types and named references, Build real writer-reader resolvers in backward, forward and full modes, Validate records and encode or decode actual Avro binary data; account, comments, and anonymous analytics may still create normal site requests.

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