How the JSON to XML Converter Works

XML and JSON represent data differently. JSON has arrays and objects; XML has elements and attributes. The converter bridges this gap intelligently while producing valid, well-formed XML.

Basic Structure

Every conversion starts with an XML declaration and wraps your data in a customizable root element. Object keys become element names, and values become element content.

{
  "name": "John",
  "age": 30
}

<?xml version="1.0" encoding="UTF-8"?>
<root>
  <name>John</name>
  <age>30</age>
</root>

How Arrays Are Handled

JSON arrays become parent elements containing multiple <item> child elements. This maintains the ordered nature of arrays in a valid XML structure.

{
  "colors": ["red", "green", "blue"]
}

<colors>
  <item>red</item>
  <item>green</item>
  <item>blue</item>
</colors>

Special Character Escaping

XML has five characters that must be escaped in content. The converter handles all of them automatically to prevent malformed XML.

Invalid Tag Name Handling

XML tag names can't start with numbers or contain certain characters. The converter sanitizes keys by replacing invalid characters with underscores and prefixing numeric starts.

"2024-sales": 50000

<_2024_sales>50000</_2024_sales>

Null Value Handling

Null values use the XML Schema Instance namespace with the nil attribute. This is the standard way to represent null in XML while maintaining schema validity.

<middleName xsi:nil="true" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"/>

Empty Arrays and Objects

Empty arrays and objects become self-closing tags. This keeps the XML compact while preserving the information that the element exists but contains no data.