Protobuf Formatter
// Format Protocol Buffer definition files
#About Protobuf Formatter
Free online Protobuf formatter. Beautify .proto files with proper indentation, clean spacing, and consistent structure for readable Protocol Buffer definitions. This tool runs entirely in your browser — your data is never sent to a server. Just paste your input, get instant results, and copy with one click. No sign-up or installation required.
#FAQ
What indentation does the formatter use? ▾
The Protobuf formatter uses 2-space indentation, which is the standard convention for .proto files.
Does it handle all proto3 syntax? ▾
Yes, the formatter handles message, enum, service, rpc, oneof, map, repeated, import, option, and package declarations with proper indentation and spacing.
</> Embed this tool ▾
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