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/ Protobuf to JSON

Protobuf Schema (.proto)

Protobuf to JSON Type Mapping

double, float → number

int32, int64 → integer

uint32, uint64 → integer

bool → boolean

string → string

bytes → string (base64)

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Protobuf to JSON

Convert Protobuf schema definitions to JSON Schema

■ 01

What is Protocol Buffers?

Protocol Buffers (protobuf) is a language-neutral, platform-neutral, extensible mechanism for serializing structured data, developed by Google. It is smaller, faster, and simpler than XML or JSON. JSON Schema is a vocab…

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How does it work?

This tool parses .proto syntax and generates an equivalent JSON Schema. Message types become JSON objects with properties, repeated fields become arrays, and enums become string types with allowed values. Field numbers…

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Sample Cases

Covers Simple message, Repeated field, and Enum type so you can compare common inputs and outputs quickly.

/ Code

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/ Integration

Source code from the selected tool, shown here alongside the live version on the right.

/ Source Code

TypeScript

typescript

// Protobuf to JSON Schema converter (simplified)

interface ParsedField {
  name: string;
  type: string;
  isRepeated: boolean;
  fieldNumber: number;
}

interface ParsedMessage {