Protobuf Tools
Protobuf Tools
Parse .proto schemas; encode JSON to binary protobuf (shown as hex); decode binary back to JSON. Supports nested messages, repeated fields, and all scalar types.
Parse .proto schemas; encode JSON → binary protobuf; decode binary → JSON. Powered by protobuf.js.
Protobuf Tools
Parse .proto schemas; encode JSON to binary protobuf (shown as hex); decode binary back to JSON. Supports nested messages, repeated fields, and all scalar types.
Common uses
- Encode a JSON object as binary protobuf
- Decode a protobuf hex blob back to JSON
- Inspect field numbers in a .proto schema
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Frequently asked questions
How do I decode a protobuf binary to JSON?
Paste your .proto schema and the hex bytes into the Codec tab, choose Decode, and you get JSON back.
Can I generate a .proto schema from JSON?
Yes, the JSON to Schema tab infers a message definition from a JSON sample.
Can I inspect a .proto file?
Yes, the Inspect Schema tab parses a .proto schema and shows its message structure.
Is my data uploaded to a server?
No. This tool runs entirely in your browser — your input is processed locally on your device and is never uploaded or stored on a server.