Protobuf to Apache Avro Converter
Convert Protocol Buffers proto3 messages, enums, maps, and oneof blocks into Apache Avro schema definitions in your browser.
At a glance
Protobuf to Apache Avro Converter transforms Protocol Buffers (Proto3) messages, enums, maps, and oneofs into valid Apache Avro (.avsc) JSON schemas. It maps Proto3 scalars, repeated fields to Avro arrays, enums to Avro symbol definitions, and sub-messages to nested records purely inside client-side memory.
100% Client-Side In-Browser Protocol Buffers to Apache Avro Transpiler
Compile Protocol Buffers (Proto3) messages, enums, maps, oneofs, and repeated fields directly into Apache Avro (.avsc) schema definitions with zero server uploads.
Why Use This Protobuf to Apache Avro Converter?
How to Use Protobuf to Apache Avro Converter
Paste Proto3 Schema
Paste your Protocol Buffers (.proto) definition into the editor or select a built-in preset.
Configure Avro Options
Set a fallback Avro namespace and select your preferred JSON output indentation.
Copy or Export .avsc
Copy the generated Apache Avro JSON schema or download it directly as a .avsc file.
Protobuf to Avro example
Demonstrates converting a Proto3 User message with string, integer, and repeated array fields into an Apache Avro record schema.
syntax = "proto3";
message User {
string id = 1;
int32 age = 2;
repeated string tags = 3;
}
{
"type": "record",
"name": "User",
"fields": [
{ "name": "id", "type": "string" },
{ "name": "age", "type": "int" },
{ "name": "tags", "type": { "type": "array", "items": "string" } }
],
"namespace": "com.example"
}
Technical Specifications & Engine Details
| Specification | Details |
|---|---|
| Supported Formats | Text / Input → Rendered Result |
| Execution Mode | 100% Client-Side In-Browser (client) |
| Browser Requirements | Requires modern web browser with ECMAScript 6+ and standard DOM Web APIs. |
| Performance Constraints | Client browser memory limit (typically 1–2 GB RAM); processing speed depends on client hardware. |
100% Client-Side Privacy Guarantee
Your schema files remain strictly on your local device. Zero data is transmitted to external servers.
Frequently Asked Questions
How are Proto3 scalar types mapped to Avro?
How does the tool handle repeated and map fields?
How are Proto3 oneof blocks translated?
Is any Protobuf schema sent to a remote server?
Methodology
This tool runs entirely in your browser. The example above shows a representative input and the result it produces.
Last updated .