Free Online XML to JSON Converter

What is an XML to JSON Converter?

An XML to JSON converter is a tool that transforms XML (Extensible Markup Language) documents into JSON (JavaScript Object Notation) format. This conversion allows XML data to be easily integrated with JavaScript applications and modern web APIs that predominantly use JSON for data interchange.

How XML to JSON Conversion Works

Converting XML to JSON involves several steps to accurately transform the hierarchical structure of XML into JSON objects. The process typically includes:

1. Parsing the XML document to create a Document Object Model (DOM)
2. Traversing the XML node tree to map elements to JSON objects
3. Converting XML attributes to JSON properties
4. Handling special XML features like namespaces and CDATA sections
5. Resolving representation differences between the two formats

The conversion process must address fundamental differences between XML and JSON, including XML's distinction between elements and attributes, handling of namespaces, and support for comments—features that JSON doesn't natively support.

Key Features of Our XML to JSON Converter

• Support for complex XML structures
• Preservation of XML attributes as JSON properties
• Configurable conversion options
• Detailed error reporting for invalid XML
• Client-side processing (your data never leaves your browser)
• Works with large XML documents
• Option to format the resulting JSON for readability

Common Use Cases

• Integrating legacy XML-based systems with modern JSON-based APIs
• Converting XML configurations to JSON for JavaScript applications
• Processing SOAP web service responses for use in JavaScript
• Migrating data between different system formats
• Analyzing XML data using JavaScript libraries
• Converting XML feeds (like RSS) to JSON for web applications
• Simplifying XML data structures for frontend development

Conversion Challenges and Solutions

Converting between XML and JSON presents several challenges due to their structural differences:

• XML Attributes: Typically converted to properties with a special prefix or in a dedicated object
• Mixed Content: XML elements can contain both text and nested elements, which requires special handling in JSON
• XML Namespaces: Can be preserved as prefixes in property names or in special namespace objects
• Repeated Elements: Typically represented as arrays in JSON
• XML Comments: Generally not preserved in JSON as JSON doesn't support comments
• XML Processing Instructions: Requires special handling or may be discarded in JSON

<book id="123">
  <title>The Great Gatsby</title>
  <author>F. Scott Fitzgerald</author>
  <year>1925</year>
  <available>true</available>
</book>

{
  "book": {
    "@id": "123",
    "title": "The Great Gatsby",
    "author": "F. Scott Fitzgerald",
    "year": "1925",
    "available": "true"
  }
}