JSONToTable

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How to Read Protobuf - Step by Step Guide

Step 1

Input Your Protobuf Definition

Start by entering your Protocol Buffer schema definition (.proto file content) that needs to be read, analyzed, and documented. This tool helps you understand protobuf message structures, field types, and relationships:

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Paste schema definitions: Copy .proto file content from your projects, APIs, or documentation
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Upload .proto files: Load schema files directly from your computer for instant analysis
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Try example schemas: Click "Sample" to explore a sample protobuf definition and see detailed analysis

Example: Protobuf Schema Input

Here's a typical .proto schema definition ready for analysis:

syntax = "proto3";

message Product {
  int32 product_id = 1;
  string product_name = 2;
  double price = 3;
  repeated string tags = 4;
}
Step 2

Automatic Reading & Analysis

The reader automatically analyzes your protobuf schema and presents it in a structured table format that's easy to read and understand:

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Schema parsing: Reads and interprets message definitions, field names, and field numbers
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Type identification: Identifies and displays all scalar types (string, int32, double, etc.) and modifiers (repeated, optional)
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Relationship mapping: Shows nested message relationships and field dependencies clearly
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Instant analysis: Real-time schema reading as you type or paste definitions

Example: Schema Analysis Result

The schema above is analyzed and presented showing all message fields and their specifications:

MessageField NameField TypeField #
Productproduct_idint321
Productproduct_namestring2
Productpricedouble3
Producttagsrepeated string4
Step 3

Export Your Data

Get your analyzed data ready for use! Multiple export options available:

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Download as Excel: Save as a .xlsx file for spreadsheet analysis
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Share with others: Generate shareable links for collaboration
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Maximize view: Full-screen mode for better visualization of complex schemas

Frequently Asked Questions

What protobuf versions does the reader support?

The reader fully supports both proto2 and proto3 syntax. It accurately reads and analyzes message definitions, all scalar types, repeated/optional/required modifiers, nested messages, enums, oneofs, and map fields.

How does the reader handle complex schemas?

The reader intelligently parses complex schemas with multiple message types, nested definitions, and cross-references. It organizes everything in a clear tabular format, showing each message's fields, types, and field numbers for easy comprehension and documentation.

Can I read large enterprise .proto files?

Absolutely! The reader efficiently handles large enterprise-scale .proto files with hundreds of messages and fields. Analysis happens in real-time as you paste the schema, with instant visual feedback on the structure and organization.

Can I save and share my protobuf analysis?

Yes! You can export the analyzed schema to Excel for documentation and team collaboration, or generate shareable links that colleagues can access instantly. Perfect for API documentation and technical specifications.

Is the protobuf reader free to use?

Yes! The protobuf reader is 100% free with unlimited schema analysis, no file size limits, and no registration required. All features including export, sharing, and full-screen view are available at no cost for both personal and commercial use.