XML ⇄ JSON Converter

About this tool

Convert XML and JSON in both directions with round-trip friendly defaults. Repeated element names stay as scalars until the second occurrence, then become arrays. When a JSON root is an array, the XML side uses <root><item>…</item>…</root> and converts that shape back into an array when returning to JSON.

XML ⇄ JSON conversion

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How to use

  1. Paste XML or JSON into the left input area.
  2. Choose XML → JSON or JSON → XML.
  3. Adjust indentation, attribute/text keys, namespace handling, and array treatment as needed.
  4. Use the Validate buttons to run syntax checks.

Notes

Examples

XML → JSON:

<user id="42">
  <name>Taro</name>
  <role>admin</role>
  <role>editor</role>
</user>
{
  "user": {
    "@id": "42",
    "name": "Taro",
    "role": ["admin", "editor"]
  }
}

Additional notes

  • Attributes are emitted as [attribute prefix][name] (default @id).
  • Element text content uses [text key] (default #text).
  • Matching element names remain scalars unless there are two or more values, at which point they become arrays.
  • When the JSON root is an array, XML represents it as <root><item>…</item>…</root>; the tag name is configurable.
  • Empty elements with no text or attributes become empty objects {}.

Limitations

The tool aims for structural equivalence, but some type fidelity is impossible because XML lacks native booleans or numbers. For example:

Original JSON:


    "urls": [
             "admin.microsoft.com"
            ],
    "expressRoute": false,
    "id": 160,

Round-tripped JSON:


    "urls": "admin.microsoft.com",
    "expressRoute": "false",
    "id": "160",

This happens because the XML representation cannot guarantee array length or preserve boolean/number types without extra annotations.

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