UlvixorJSON to XML and XML to JSON Converter
Convert between JSON and XML in both directions right in your browser. When converting JSON to XML, if the content doesn't have a single root element, the tool automatically wraps it in a <root> element to comply with the XML standard.
How it works
- Choose the tab for the conversion you need: JSON to XML or XML to JSON.
- Paste or type your content into the input panel (or use the built-in example).
- When converting JSON to XML, if the JSON is an array or has multiple top-level keys, it's automatically wrapped in a <root> element.
- The tool validates the input format and shows a clear error if it isn't valid.
- Copy the result or download it as a .xml or .json file, as appropriate.
Use cases
- Convert a modern API's JSON response to XML for a legacy system that only accepts XML.
- Turn an XML configuration file or feed into JSON for processing with JavaScript.
- Quickly test how a JSON data structure would look represented as XML.
- Migrate data between systems that use different data-interchange formats.
Use cases
- Convert a modern API's JSON response to XML for a legacy system that only accepts XML.
- Turn an XML configuration file or feed into JSON for processing with JavaScript.
- Quickly test how a JSON data structure would look represented as XML.
- Migrate data between systems that use different data-interchange formats.
Common mistakes
- Being surprised that the JSON gets wrapped in a <root> tag when converting to XML.XML requires a single root element; if your JSON is an array or has more than one top-level key, the tool automatically wraps it in <root> to produce valid XML.
- Expecting XML attributes (the ones starting with @_) to be lost when converting to JSON.The tool preserves attributes as @_-prefixed properties in the JSON, thanks to fast-xml-parser's option that keeps attributes in both directions.
- Pasting XML with an unclosed tag and expecting a partial result.The tool validates the entire XML before converting and shows the exact line of the error, instead of generating an incomplete or incorrect JSON.
Frequently asked questions
No. Conversion between JSON and XML happens entirely in your browser using the fast-xml-parser library. Your content never leaves your device.
XML requires every document to have a single root element. If your JSON is an array, or an object with more than one top-level key, there's no single way to represent it as a root, so the tool automatically wraps it in <root> to produce valid XML.
Yes. XML attributes (which appear prefixed with @_ in the resulting JSON) are preserved as object properties, thanks to the library's option that keeps attributes in both directions.
The tool validates the XML before converting it and shows an error message indicating the line and the problem found, such as an unclosed tag or an invalid character.
Yes, each element of a JSON array becomes a repeated XML tag with the same name, following the standard convention for mapping between JSON and XML.
Alternatives
In Node.js, the fast-xml-parser library (the same one this tool uses) or xml2js let you do the conversion inside a script. This tool is useful for a one-off conversion with no dependencies to install.