Protobuf to JSON

Upload a protobuf wire message and its .proto definition for fully typed JSON decoding.

Workspace

Your file is uploaded temporarily for processing.

Temporary server processing
↑Drop a file here or choose oneUploads to the server temporarily · 24 MB max

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Protocol Buffers schema (.proto)Second file required · Uploaded only when you run the tool · 24 MB max

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Select a file or paste data to begin.

Output and diagnostics appear below after processing.

How it works

The server compiles the supplied schema with protoc, resolves the message descriptor and uses Google protobuf dynamic decoding and canonical ProtoJSON formatting.

Important limitations

Correct .proto schema is required. Imports other than installed well-known Google schemas are not supported in the single-file upload. Choose the correct message type for multi-message schemas.

Frequently asked questions

Is my file uploaded?

Yes. This advanced tool sends the file to the Oracle processing server through the Cloudflare API gateway. Files are stored only temporarily during processing, then removed. Do not use it for highly sensitive files.

Do I need an account?

No, but the site operator must first configure the processing backend.