XML to JSON
Converter

How to convert XML to JSON

1. Click Choose files or drop .xml files onto the page.
2. Each file is validated and converted as soon as it’s added.
3. Choose an Indent in the settings panel on the right (2 spaces, 4 spaces or Minified) and click Apply to all files if you change it.
4. Save the .json file, or Download all (.zip).

How XML maps to JSON

XML and JSON don’t line up one to one, so the converter follows a fixed set of rules. Knowing them makes the output easy to work with.

The root element becomes the single top-level key. Each child element becomes a key inside its parent. When an element appears more than once in the same parent, its values are collected into an array; when it appears once, it’s a plain value or object.

Attributes become keys that start with @_, so id="7" turns into a key named @_id. When an element has both attributes and text, the text goes under a key named #text.

Namespace prefixes are kept in the key names, so dc:title stays dc:title.

Values, whitespace and what gets dropped

• Element text that looks like a number becomes a JSON number, and true and false become booleans. Numbers with leading zeros, hex values and exponent notation like 1e5 stay strings, so codes and IDs aren’t altered.
• Attribute values are always kept as strings.
• Whitespace at the start and end of text is trimmed.
• Comments, the XML declaration and processing instructions are left out.
• CDATA sections are merged into the element’s text.

Common problems and fixes

• “This isn’t valid XML (line 14, column 3).” The file is checked before converting. The message points to the problem, often an unclosed tag, a stray ampersand that should be written as &, or two root elements.
• A field is sometimes an object and sometimes an array. That follows from the rule above: one child gives a value, two or more give an array. In your code, wrap single values in an array before looping.
• Mixed text and tags lose their order. In XML like a paragraph with bold words inside, the text and the child elements are stored under separate keys, so the original order isn’t kept. This tool is meant for data XML (feeds, exports, configs), not for documents.

When to use it

Typical jobs are reading an RSS or Atom feed in JavaScript, moving settings out of an old XML config, inspecting a SOAP response or an export from older business software, and preparing sample data for tests. JSON is easier to read and works directly in JavaScript and most modern APIs.

To go back, JSON to XML uses the same @_ and #text conventions, so a converted file can be turned back into similar XML.

The whole file is read into memory at once. Exports of tens of megabytes are fine on a computer; very large database dumps may be too much for a browser tab, especially on a phone.

Privacy

Validation and conversion both run in your browser using fast-xml-parser. The files stay on your device, which is useful for exports that contain customer or company data.