Pulsars

JSON to XML Converter — Generate XML from JSON Data

JSON5 lines
XML5 lines

Converting JSON to XML is necessary when integrating with legacy SOAP web services, generating RSS or Atom feeds, creating SVG graphics from data, or producing documents in formats like XHTML or EPUB. While JSON is the modern default for data interchange, XML remains dominant in enterprise environments, healthcare (HL7), finance (FIX/FIXML), and government systems.

When is XML preferred over JSON?

XML is preferred when you need document validation via XSD schemas, data transformation via XSLT, namespace support for mixing vocabularies, or when the consuming system only accepts XML. Many payment gateways, ERP systems, and regulatory reporting interfaces require XML input regardless of how data is stored internally.

Frequently Asked Questions

How are JSON arrays converted to XML?

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Each array element becomes a repeated XML element. For example, {"items": ["A", "B", "C"]} generates <items><items>A</items><items>B</items><items>C</items></items>. If the array is at the top level, elements are wrapped in a <root> tag.

What happens with null values in JSON?

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Null values are converted to self-closing XML tags. For example, {"field": null} becomes <field/>. This is the standard XML convention for empty or absent values.

Does the converter generate XML with a declaration?

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The converter generates the XML body without the <?xml version="1.0"?> declaration. You can add this manually if needed. The output is always well-formed XML that can be parsed by any XML parser.

How does it handle nested JSON objects?

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Nested objects become nested XML elements. Each key becomes a tag name, and the value becomes the element content. Deep nesting is fully supported — the converter recursively builds the XML tree matching your JSON structure.

Is the output valid XML?

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Yes, the converter generates well-formed XML. Tag names are derived from JSON keys, so they must be valid XML names (no spaces, no starting with numbers). If your JSON keys contain special characters, the XML may need manual adjustment.