Protobuf Encoder / Decoder

Encode JSON into Protobuf bytes or decode hex / Base64 Protobuf payloads with a .proto schema in the browser.

Free to useBrowser-firstBilingual helpReady on page

Tool area

Use it directly on this page

ProtobufSchemaBinary

Tool area

The tool will be ready here as soon as the page finishes loading.

How to use

1 Paste the .proto schema and message type.

2 Choose encode or decode mode.

3 Paste JSON or binary payload and review the result.

Common uses

gRPC and Protobuf debugging

Inspect binary payloads

Verify message schemas without local scripts

FAQ

What is Protobuf Encoder / Decoder useful for?

gRPC and Protobuf debugging

How do I start using Protobuf Encoder / Decoder?

Paste the .proto schema and message type. Choose encode or decode mode. Paste JSON or binary payload and review the result.

What should I do after this result?

Most people continue with JSON Formatter, Regex Tester, HTTP Status Code Lookup next.