Format or beautify Protobuf

Format or beautify your code in Protobuf locally in your browser using WebAssembly.

Format your code now!
// Welcome to HappyFormatter!
syntax = "proto3";

message Greeting {
  string message = 1;
  repeated string instructions = 2;
}

message Metadata {
  string author = 1;
  string license = 2;
}

message Example {
  string name = 1;
  string version = 2;
  repeated string features = 3;
}
Valid proto
// Welcome to HappyFormatter!
syntax = "proto3";

message Greeting {
  string message = 1;
  repeated string instructions = 2;
}

message Metadata {
  string author = 1;
  string license = 2;
}

message Example {
  string name = 1;
  string version = 2;
  repeated string features = 3;
}

Proto Formatter


Proto Formatter that formats Proto data, locally in your browser

  • Proto formatter online is the best tool to format Proto data.
  • Proto validator online is the best tool to validate Proto data.
  • It helps to validate Proto online with error messages.
  • It's also a Proto Beautifier that supports indentation levels: 2 spaces, 3 spaces, and 4 spaces.
  • Supports printing of Proto data.

Know more about proto:

  • Protocol Buffers (Protobuf) is a method of serializing structured data in a compact, efficient binary format.
  • Protobuf is used for data interchange between systems, particularly in distributed systems and microservices architecture.
  • Protobuf is a language-neutral, platform-neutral, extensible format for serializing structured data.
  • Protobuf is a binary format, which means it is more efficient in terms of both space and time compared to text-based formats like JSON.
  • Protobuf is a schema-based format, which means that a schema is defined for the data, and the data is serialized according to that schema.
  • Protobuf is a self-describing format, which means that the data can be read without knowing the schema beforehand.
  • Protobuf is a language-neutral format, which means that it can be used with any programming language.
  • Protobuf is a platform-neutral format, which means that it can be used on any platform.

Proto Validator


Proto Validator Online checks the integrity/syntax of the Proto data based on Proto Specifications.

  • It's super easy to find the error when line numbers are highlighted with an in-detail error description.
  • Use the format button as a Proto Fixer to repair the error.
  • To validate Proto you just need internet and no need to install any software.
  • Your Proto data gets validated in the browser itself.

Frequently Asked Questions

Explore Our Tools