Tool Fu
$ toolfu run xml-to-json

XML to JSON Converter — Online Free

Convert XML to JSON online for free. Transform XML data to JSON format instantly. Handles attributes, namespaces, nested elements, and CDATA — runs entirely in your browser.

all processing runs in your browser
xml-to-json
input > paste XML
output > JSON

Convert XML to JSON Online — Free XML to JSON Converter

XML is still widely used in enterprise APIs, SOAP services, configuration files, and data feeds. When you need to work with XML data in a JSON-based workflow, this tool converts it instantly. Attributes are preserved with an @_ prefix to avoid naming conflicts.

Paste your XML and get clean, formatted JSON output. The conversion handles nested elements, attributes, text content, CDATA sections, and namespaces. Everything runs client-side using the fast-xml-parser library.

Common use cases

  • Converting SOAP API responses to JSON for modern clients
  • Migrating XML configuration files to JSON format
  • Parsing RSS/Atom feeds into JSON for processing
  • Converting XML data exports for use in JavaScript applications
$ cat FAQ.md
How are XML attributes handled?▶
XML attributes are prefixed with '@_' in the JSON output. For example, <book id="1"> becomes {"book": {"@_id": "1"}}. This convention prevents naming conflicts between attributes and child elements.
Does it support namespaces?▶
Namespace prefixes are preserved in the JSON keys. For example, <ns:element> becomes {"ns:element": ...}. The namespace URIs from xmlns declarations are also included in the output.
Is my data sent to a server?▶
No. All XML parsing and JSON conversion happens entirely in your browser using the fast-xml-parser library. Your data never leaves your device.
Can it handle large XML files?▶
The tool works well for typical XML documents. For very large files (several MB), conversion may take a moment since it runs in the browser. There is no hard size limit, but browser memory constraints apply.