Get a reliable result in three steps
- 1
Paste the complete source content into the formatting editor.
- 2
Choose only the formatting options relevant to this syntax.
- 3
Format the content, review the result, then copy or download it.
What this tool does
Protobuf (.proto) Beautifier gives you a fast, focused way to format Protocol Buffers schema source into a consistent, readable layout without compiling or executing it. Everything runs locally in this tab.
The result is produced only after the input is checked. If the value cannot be processed, the workspace reports a specific error instead of guessing.
Features
- Local browser processing
- Input validation before transformation
- Syntax-aware editable output
- Character, line, and byte measurements
Input and output
- Input
- Protocol Buffers schema
- Output
- text
- Processing
- Local browser
Example
syntax="proto3";message Tool{string name=1;bool private=2;repeated string formats=3;}Limitations
- Review important output before using it in production.
- Very large inputs remain subject to browser memory limits.
- Formatting checks balanced syntax and applies a conservative Protocol Buffers schema layout; it is not a compiler or full semantic validator.
- Comments and quoted values are preserved, and source code is never executed.