Protobuf to JSON

Decode Protocol Buffers data into clean JSON using your .proto definition directly in your browser.

Your data is processed locally in your browser and is never uploaded.

Local Protobuf decoding

Choose a local .pb, .bin, or .protobuf file, provide its .proto schema, and select the matching message type. External .proto imports are not fetched; bundled Google well-known types are supported locally where available.

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