XML ↔ JSON Converter

What is XML ↔ JSON Converter?

XML-JSON Converter transforms XML documents into JSON objects and back, handling attributes, namespaces, CDATA sections, and mixed content. It uses configurable conventions for mapping XML attributes (prefixed with @ or grouped under an _attributes key) and text content. The tool validates XML well-formedness and provides detailed error messages for malformed documents.

Integration developers bridging SOAP and REST services, backend engineers modernizing XML-based systems, and data engineers converting legacy data feeds to JSON. The tool runs entirely in your browser — your data never leaves your device.

How to Use XML ↔ JSON Converter

1. Paste your XML content into the left panel or JSON into the right panel
2. Select the conversion direction — XML to JSON or JSON to XML
3. Configure attribute handling — use @ prefix, _attributes grouping, or flatten into the object
4. Review the converted output with proper formatting and syntax highlighting
5. Copy the result or download it as a file in the target format

Common Use Cases

• Converting SOAP API responses to JSON for easier consumption in modern JavaScript applications
• Transforming XML configuration files like Spring beans or Maven pom.xml into JSON for tooling
• Migrating legacy XML-based data feeds to JSON format for modern API endpoints
• Parsing RSS or Atom feed XML into JSON for building feed reader applications
• Converting SVG XML markup to JSON for programmatic manipulation in build tools

Pro Tips

• XML attributes have no direct JSON equivalent — choose the @ prefix convention (like @id) if you need to round-trip back to XML without data loss
• XML namespaces (xmlns) can create deeply nested output — use the strip namespaces option if you do not need namespace-qualified element names in your JSON
• Be aware that XML preserves element order while JSON objects do not guarantee key order — if element sequence matters, the converter uses arrays to maintain ordering

Why Use This Tool?

• Privacy-first: All processing happens locally in your browser. No data is transmitted to any server.
• No installation required: Works in any modern browser on desktop or mobile.
• Completely free: No account, no credit card, no usage caps.
• Fast and reliable: Powered by modern Web APIs for near-instant results.

Related Concepts

Learn more about related topics: XSLT, SAX parser, DOM, XML Schema.

Frequently Asked Questions