XML ↔ JSON Converter

XML ↔ JSON Converter converts XML documents to JSON and JSON back to XML using one documented mapping: attributes become “@” keys, text next to attributes or children becomes “#text”, and repeated sibling elements become arrays. XML is parsed by the browser’s XML parser after rejecting DOCTYPE and entity declarations; JSON is parsed by a strict parser with line-and-column errors. Output is formatted and checked before it is shown.

Many systems still exchange XML (feeds, SOAP services, configuration and office formats) while modern APIs and tools prefer JSON. Converting with a predictable mapping makes it easy to move data between them and to inspect XML in JSON-friendly tools, without uploading the data.

1. Paste XML into the left box or JSON into the right box, or press Load sample.
2. Choose the indentation and whether to trim whitespace around XML text.
3. Press XML → JSON or JSON → XML.
4. If an error appears, read the line and column and use Go to error.
5. Review any notes about dropped comments or mixed content.
6. Copy the result or download it as .xml or .json.

• Two-way conversion in separate editable panels
• Documented mapping for attributes, text, repeated and nested elements
• Strict XML and JSON parsing with line and column errors
• DOCTYPE, entity and DTD declarations rejected for safety
• Correct XML escaping and validation of element names
• Unicode preserved; invalid XML characters reported
• Formatted output with indentation choice
• Copy, Download .xml, Download .json and sample data

• Keep a copy of the original XML if comments or processing instructions matter.
• Wrap lists in a parent element so repeated items are easier to handle as arrays.
• Make sure JSON keys are valid XML names before converting to XML.
• Treat all converted values as text and convert types in your own code if needed.
• Validate the converted output in the system that will consume it.