JSON to XML

Mapping JSON to XML

Many older systems, payment gateways and government services still speak XML. This converter writes JSON as XML with a simple, reversible mapping:

• each key becomes an element;
• keys starting with @ become attributes of their parent;
• a #text key becomes the element's text;
• an array repeats the element once per item;
• null becomes an empty element.

Characters with a meaning in XML (&, <, >, ") are escaped, and keys that are not valid element names (starting with a digit, containing spaces) are adjusted with underscores so the result is always well formed.

Worked example

{"order": {"@id": 7, "item": [{"@sku": "A1", "#text": "Mug"}, {"@sku": "B2", "#text": "Poster"}], "total": 20.5}}

becomes

<?xml version="1.0" encoding="UTF-8"?>
<order id="7">
  <item sku="A1">Mug</item>
  <item sku="B2">Poster</item>
  <total>20.5</total>
</order>

The page parses the JSON strictly and walks the value. If the root is an object with exactly one key, that key becomes the root element; otherwise the page wraps everything in the root element named in the options. Objects become elements, @ keys become attributes, #text becomes text content, arrays repeat their element, and scalars become text. Values are escaped for XML and invalid element names are fixed with underscores. Use XML to JSON for the reverse. Everything runs in this tab.