Convert Protobuf to JSON
Deserialize binary Protobuf to a JSON structure. Runs entirely in your browser, so your data never leaves your device.
Drop a file here, or click to browse
Files never leave your device
Output
The result appears here as you type.
How to use Convert Protobuf to JSON
- 1. Add your Protobuf file. Drop or browse for a .pb, .bin or .proto3 file containing a serialized Protobuf message, the binary format gRPC services and many high-throughput systems use on the wire.
- 2. Provide the .proto schema and message type. Paste the matching schema into .proto schema so the decoder knows each field's name and type, then enter the message name in Message type, such as Person, that the bytes represent.
- 3. Pick the output indent and copy. Choose 2 spaces, 4 spaces or tabs for the Indent setting, then copy the resulting JSON to read the decoded values or use them in your application code.
When to use Convert Protobuf to JSON
Convert Protobuf to JSON deserializes binary Protocol Buffers data, using the .proto schema you supply, into readable JSON. It is for anyone debugging gRPC traffic or Protobuf-based storage who needs to see the actual field values inside a binary message.
- Inspecting a captured gRPC message. You captured a Protobuf-encoded request or response while debugging a gRPC service and want to see the decoded field values as readable JSON.
- Reading a Protobuf-serialized record from storage. A system stores records as serialized Protobuf messages, and you exported one to check its contents against the schema you believe it should match.
- Verifying a decoder handles a schema correctly. You are testing whether a specific .proto schema decodes a known binary file the way you expect before relying on that decoding logic elsewhere.
- Debugging a message queue's Protobuf payloads. Events on a Kafka topic are encoded as Protobuf, and you pulled one message to check its field values against the schema during a debugging session.
Examples
Decode a Person message
Input
data.pb (16 B binary file)
Output
{
"name": "Ada",
"age": 36,
"tags": ["math"]
}About the Convert Protobuf to JSON tool
Convert Protobuf to JSON does its work locally, right in the browser. Deserialize binary Protobuf to a JSON structure. There is no upload step, no queue and no account, and your data never travels over the network.
It belongs to the JSON Tools collection on EditSafely, a set of 90 small, focused JSON utilities that share the same instant, private workspace.
You can shape the output with 3 settings, including .proto schema, Message type and Indent, and the result refreshes the moment you change one. A worked example further down the page shows exactly what the tool produces for a real input.
Running locally also makes the tool fast and dependable: results appear as you type or drop a file, there is no server outage that can take it down mid-task, and confidential data can be processed without a second thought.
Frequently asked questions
Is Convert Protobuf to JSON free to use?
Yes, it is completely free. All 2,658 tools on EditSafely work without an account, a subscription or usage limits.
Are my files uploaded to a server?
Everything happens locally. Your browser downloads the tool's code once, then does all the processing itself; nothing you enter is transmitted, stored or logged. You can even go offline after the page loads and it will still work.
Which files does Convert Protobuf to JSON accept?
It accepts PB files, BIN files and PROTO3 files. There is no file size cap imposed by a server; very large files are limited only by your device's memory.
Do I need to sign up or install anything?
No. The tool works in any modern browser on desktop, tablet or phone. There is no account to create, no extension to add and no software to install.
How do I use the result?
The output panel has a one-click copy button, and you can keep refining the input while you work; the result updates in place as you type.