Convert JSON to XML – SOAP APIs and legacy systems

JSON and XML are both structured data formats, but they use fundamentally different syntax. JSON uses curly braces and key-value pairs, while XML uses opening and closing tags to define elements. The converter maps each JSON property to an XML element, preserving the hierarchical structure.

JSON objects become XML elements, JSON arrays become repeated elements, and primitive values (strings, numbers, booleans) become text content within their parent tags. The converter generates well-formed XML with proper indentation and an XML declaration header.

XML is widely used in enterprise systems, SOAP web services, configuration files, and data interchange where strict schema validation is required. The conversion runs entirely in your browser — no data is sent to any server.

The converter maps JSON structures to XML elements following these rules:

• Objects – each key becomes an XML element. {"name": "John"} → <name>John</name>
• Arrays – each item becomes a repeating element with the key name. {"items": [1, 2]} → <items>1</items><items>2</items>
• Primitives – strings, numbers, booleans become text content of their parent element.
• Null values – converted to empty elements or omitted.

The output includes a proper XML declaration and uses 2-space indentation for readability. Element names are derived directly from JSON keys.