Convert between XML and JSON formats with attribute control. Free, private, runs in your browser.
100% private — your files never leave your browser. All processing happens locally on your device.
XML (eXtensible Markup Language) has been the backbone of data exchange for decades — used in SOAP APIs, RSS feeds, SVG graphics, Microsoft Office formats, Android manifests, and enterprise integrations. JSON (JavaScript Object Notation) is the modern standard for web APIs and application data. Converting between XML and JSON is essential when integrating legacy systems with modern applications, parsing RSS feeds, or working with enterprise APIs that still use XML.
Modern web applications overwhelmingly use JSON, but many enterprise systems, government APIs, financial services, and legacy platforms still communicate in XML. When you need to consume an XML API response in a JavaScript application, migrate data from an XML-based system, or debug SOAP API responses, converting to JSON makes the data easier to work with. The reverse conversion is useful when you need to send data to XML-expecting systems.
The tool uses fast-xml-parser, a high-performance XML parser with zero dependencies. It correctly handles XML attributes (configurable prefix: @, _, or $), CDATA sections, namespaces, repeated elements (automatically converted to arrays), and deeply nested structures. For JSON-to-XML conversion, the XMLBuilder produces well-formed, properly indented XML. You can control namespace handling, attribute prefixes, and output indentation.
Absolutely. Your XML and JSON data is processed entirely in your browser. Enterprise XML files often contain sensitive business data, customer information, or internal system details — none of it leaves your device.
Yes. Toggle the direction to switch between XML→JSON and JSON→XML. Both directions are supported.
Attributes are prefixed with a configurable character (@ by default). For example, <user id="1"> becomes {"user":{"@id":"1"}}. You can change the prefix to _, $, or disable it.
Yes. You can choose to preserve namespaces or strip them from the output for cleaner JSON.
CDATA content is preserved as plain text strings in the JSON output.