Generate the serialization schema your pipeline needs from a sample payload — no hand-typing field types.
Paste sample JSON and get a typed schema in Avro, Parquet, Protobuf or JSON Schema — types inferred, nested records handled, ready to drop into your pipeline.
Free tier: 5 schema generations per month · or unlock forever for $4.99
Schema generated
Illustrative — pick one target format per run: Avro, Parquet, Protobuf or JSON Schema.
Every card is something members actually do inside Datamata — not a vague promise.
Generate the schema your stack needs from a sample payload without typing field types by hand.
Nested objects become records and repeated fields become arrays with sensible names.
Drop the schema straight into Kafka, Spark or your registry instead of hand-editing it.
Outputs Avro, Parquet, Protobuf or JSON Schema — pick the format your stack expects
Feature deep-dives
See it work
Generate the schema your stack needs from a sample payload without typing field types by hand.
Try Schema GeneratorSchema generated
Illustrative — pick one target format per run: Avro, Parquet, Protobuf or JSON Schema.
Go deeper
Nested objects become records and repeated fields become arrays with sensible names.
Browse all premium toolsIn practice
Drop the schema straight into Kafka, Spark or your registry instead of hand-editing it.
Try Schema GeneratorBuilt for Premium outcomes
Real decisions, not generic templates. Every workflow runs on live market data so your moves are backed by what employers are asking for now.
Outputs Avro, Parquet, Protobuf or JSON Schema — pick the format your stack expects
Infers types, optional fields and nested records from your sample JSON
Names records and enums sensibly and flags fields that need a manual decision
Quick start guide
Generate a schema in three steps — paste a JSON sample, pick Avro, Parquet, Protobuf or JSON Schema then copy the result.
Include optional and nested fields so the inferred schema matches production.
Pick Avro, Parquet, Protobuf or JSON Schema depending on your stack.
Review the inferred types and field names then copy it into your project.
Modelling a warehouse table instead? Use the JSON to SQL Schema Generator for DDL.
What's included
Outputs Avro, Parquet, Protobuf or JSON Schema — pick the format your stack expects
Infers types, optional fields and nested records from your sample JSON
Names records and enums sensibly and flags fields that need a manual decision
Free tier includes monthly generations; Pro unlocks unlimited output across all formats
Start free, upgrade when you need more.
Pro
$9.99/moUnlimited Avro, Parquet, Protobuf and JSON Schema output
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