JSON to XML Converter
Convert JSON to well-formed XML instantly. Customizable root element name, attribute handling, pretty-print indentation, and full support for arrays, nested objects, and primitives. Everything runs in your browser — your data stays private.
About JSON to XML Conversion
JSON (JavaScript Object Notation) is the dominant data format for modern APIs, configuration files, and web applications. XML (eXtensible Markup Language) remains essential for SOAP web services, RSS/Atom feeds, configuration files in Java and .NET ecosystems, document formats like SVG and XHTML, and legacy enterprise integrations. Converting JSON to XML is a common requirement when integrating modern systems with older infrastructure or working with XML-centric tools.
This converter handles the full range of JSON data types including strings, numbers, booleans, null values, nested objects, and arrays of any depth. The output is well-formed XML that can be validated by any XML parser. Special characters in values are properly escaped using XML entities.
Key Features
- Convert any valid JSON to well-formed XML
- Customizable root element name for wrapping output
- Configurable attribute handling: @attributes objects and @-prefixed keys become XML attributes
- Pretty-print with 2-space, 4-space, or tab indentation
- Full support for arrays, nested objects, and primitive types
- Optional XML declaration ()
- Size comparison showing JSON vs XML byte counts
- File upload via drag and drop or file picker
- Syntax-highlighted XML output
- 100% client-side — your data never leaves your browser
How Arrays Are Converted
JSON arrays are converted by repeating the parent key name as the XML element tag for each item. For example, {"colors":["red","blue"]} becomes <colors>red</colors><colors>blue</colors>. When an array contains objects, each object becomes a full XML element with its own child nodes and attributes. Nested arrays are recursively processed to any depth.