JSON to XML

JSON is lighter and easier to read, using key-value pairs with curly braces. XML uses opening and closing tags like HTML, supports attributes on elements, and has built-in namespace support. JSON is preferred for web APIs, while XML is common in enterprise systems, SOAP services, and document formats like SVG and RSS.

XML documents must have exactly one root element that wraps all other content. This is a fundamental rule of the XML specification. The root element provides a single entry point for parsing and ensures the document is well-formed. When converting from JSON, this tool wraps the output in a configurable root element (default: "root").

XML attributes are metadata attached to an opening tag (e.g., <user id="1">), while elements are nested child nodes (e.g., <id>1</id>). Attributes are typically used for simple values and identifiers, while elements are better for complex or repeated data. This converter uses elements by default for clarity.

XML namespaces prevent naming conflicts when combining XML documents from different sources. They are declared using the xmlns attribute and use URI-based prefixes. For example, xmlns:xsl="http://www.w3.org/1999/XSL/Transform" defines the XSL namespace. Namespaces are essential in complex XML ecosystems.

JSON is generally preferred for modern REST APIs because it is more compact, faster to parse, and maps naturally to JavaScript objects. XML is still used in SOAP web services, banking and healthcare systems, and when document validation with XML Schema (XSD) is required. Choose based on your ecosystem and requirements.