Message type
Output
Output will appear here
Message type
Output
Output will appear here
Protocol Buffers to JSON
Parse Protocol Buffers schemas and generate sample JSON payloads for selected message types.
Protocol Buffers to JSON Use Cases
- Create API example payloads from proto contracts
- Test mock responses for gRPC gateways
- Understand unfamiliar protobuf models quickly
Protocol Buffers to JSON FAQ
Do you support nested messages?
Yes. Nested and referenced message types are resolved and included in generated examples.
Can I choose the root message?
Yes. Select any discovered message type from the dropdown and regenerate instantly.
Does this upload proto files?
No. Everything runs locally in your browser and your schema never leaves your device.