XML to Protocol Buffers Converter

About XML to Protocol Buffers Converter

Convert XML data to Protocol Buffers (protobuf) schema and data format. Perfect for data serialization, API development, and microservices communication.

Key Features

• Automatic Type Detection: Infers field types (string, bool, int32, int64, double)
• Schema Generation: Creates proto3 syntax schema definitions
• Sample Data: Includes textproto format sample data (first 100 records)
• Field Sanitization: Converts XML tags to valid protobuf field names
• XML Parser: Accurately parses XML with table-like structures
• File Upload: Upload .xml files directly
• Copy & Download: Easy export as .proto file

How to Use

1. Input XML Data: Paste your XML data or upload an .xml file
2. Review Output: The Protocol Buffers schema and data generate automatically
3. Copy or Download: Use the Copy or Download button to save your .proto file

Supported XML Structures

The converter recognizes several common XML table patterns:

• <table><row>...</row></table>: Standard table structure
• <data><record>...</record></data>: Data records pattern
• <records><record>...</record></records>: Records collection
• Repeated Elements: Any root with repeated child elements
• Attributes: Also supports attribute-based data

Type Detection

The converter automatically detects field types based on data values:

• bool: Values matching "true" or "false" (case-insensitive)
• int32: Integer values within -2,147,483,648 to 2,147,483,647
• int64: Integer values outside int32 range
• double: Floating-point numbers with decimal points or scientific notation
• string: All other values (default type)

Example Conversion

XML Input:

<?xml version="1.0" encoding="UTF-8"?>
<data>
  <record>
    <Name>John Doe</Name>
    <Age>28</Age>
    <City>New York</City>
    <Department>Engineering</Department>
  </record>
  <record>
    <Name>Jane Smith</Name>
    <Age>34</Age>
    <City>London</City>
    <Department>Marketing</Department>
  </record>
</data>

Protocol Buffers Output:

syntax = "proto3";

package xml_converter;

message XMLRecord {
  string name = 1; // Name
  int32 age = 2; // Age
  string city = 3; // City
  string department = 4; // Department
}

message XMLData {
  repeated XMLRecord records = 1;
}

// Sample data in textproto format
XMLData {
  records {
    name: "John Doe"
    age: 28
    city: "New York"
    department: "Engineering"
  }
  records {
    name: "Jane Smith"
    age: 34
    city: "London"
    department: "Marketing"
  }
}

Common Use Cases

• API Development: Define data schemas for gRPC services
• Microservices: Create message formats for service communication
• Data Serialization: Efficient binary data encoding
• Cross-Platform: Language-agnostic data structures
• Documentation: Generate protobuf schemas from XML data
• Data Migration: Convert XML data to protobuf format

Protocol Buffers Benefits

• Compact: Binary format is smaller than JSON or XML
• Fast: Efficient serialization and deserialization
• Typed: Strong typing prevents data errors
• Versioned: Forward and backward compatibility
• Multi-Language: Code generation for 20+ languages
• Validated: Schema-based validation

Field Name Sanitization

XML tags are automatically converted to valid protobuf field names:

• Converts to lowercase with underscores
• Removes special characters and accents
• Ensures names start with letters
• Handles duplicate names with numeric suffixes
• Generates default names for empty tags

Output Format

The converter generates three sections:

• Schema Definition: proto3 syntax with message types
• Statistics Comment: Number of rows processed
• Sample Data: First 100 records in textproto format

Privacy & Security

All conversions happen locally in your browser. Your XML data is never uploaded to any server, ensuring complete privacy and security.