XML to JSON Conversion
Input
<person id="42">
<name>Alex</name>
<active>true</active>
</person>Example output
{
"person": {
"name": "Alex",
"active": true,
"@_id": 42
}
}XML to JSON & JSON to XML Converter
XML & Markup100% Client-SideReady
XML
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0 B / 4.77 MB
Read-only
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About this tool, examples & FAQ
Convert bi-directionally between XML markup and JSON documents entirely within your browser. Configure attribute prefixes, indentation formatting, and automatic scalar parsing with built-in XXE entity protection.
Key facts
| Operations | XML to JSON (default) and JSON to XML |
|---|---|
| Parsing Engine | Fast XML Parser in dedicated isolated Web Worker |
| Privacy & Security | 100% client-side with DOCTYPE/ENTITY protection; zero data uploaded |
| Maximum Input | 5 MB |
| Execution Deadline | 3 s |
How to use
- Paste your XML markup or JSON payload into the input editor.
- Select your conversion direction: XML → JSON or JSON → XML.
- Configure options such as 2 or 4 space indentation, attribute prefixes, and scalar parsing.
- Click Convert (or press Ctrl/Cmd + Enter) to instantly transform the document.
- Copy, download, or Send To another connected developer tool.
Examples
JSON to XML Conversion
Input
{
"user": {
"name": "Jordan",
"role": "Admin"
}
}Example output
<user>
<name>Jordan</name>
<role>Admin</role>
</user>Edge cases
Root element requirement in XML
Valid XML requires exactly one root tag. If a JSON array or multiple root properties are converted to XML, they are enclosed within the configured root tag name.
XML attributes vs child elements
Attributes are prefixed with '@_' by default in JSON to distinguish them from child tag values. You can customize or omit attributes using the conversion options.
Local XXE injection protection
External DTD declarations, DOCTYPE statements, and entity expansions are actively rejected before parsing to prevent XML External Entity (XXE) vulnerabilities.
How it works
- Validates input syntax and scans for unsafe entity declarations.
- Parses XML trees into intermediate JavaScript structures or parses JSON objects.
- Applies attribute prefixes, scalar type coercion, and node formatting rules.
- Builds and outputs clean, indented JSON or XML strictly in a client-side Web Worker.
Related workflows
XML Formatter
Format, indent, prettify, or minify XML documents with customizable indentation, comment preservation, and self-closing tags.
JSON Formatter
Prettify, indent, and format JSON strings with customizable indentation and key sorting.
JSON ↔ YAML Converter
Convert bi-directionally between JSON and YAML with strict alias and cycle protection, custom indentation, and swap support.
JSON ↔ CSV Converter
Convert bi-directionally between JSON arrays of objects and tabular CSV/TSV data with delimiter options, header validation, and spreadsheet formula injection protection.
Frequently asked questions
Is my XML or JSON payload sent to a remote server?
No. All parsing and conversion occurs entirely client-side in your browser using isolated Web Workers. No data is logged, transmitted, or stored.
Can I convert SOAP payloads or RSS feeds to JSON?
Yes. Standard SOAP messages, RSS/Atom feeds, and custom XML schemas can all be parsed and converted to structured JSON.
References
- W3C Extensible Markup Language (XML) 1.0 (Fifth Edition) — XML document grammar, well-formedness rules, and root elements
- RFC 8259 — The JavaScript Object Notation (JSON) Data Interchange Format — JSON syntax, data types, and UTF-8 encoding specification