Converters
XML to JSON Converter
Paste your XML and get clean, formatted JSON instantly. OpenToolLab's XML to JSON converter runs entirely in your browser — your data never leaves your device.
Result
What makes this tool different
100% client-side
All conversion happens in your browser using the native DOMParser API. No data is ever sent to a server.
Handles attributes and namespaces
XML attributes are mapped to JSON properties with configurable prefixes. Namespace handling is automatic.
Pretty-print output
Converted JSON is automatically formatted with proper indentation for easy reading.
Works offline
Once loaded, the converter works without an internet connection — perfect for secure environments.
About this tool
XML to JSON Converter: everything you need to know
XML remains a cornerstone of enterprise data exchange, appearing in SOAP web services, RSS feeds, Microsoft Office documents, configuration files, and legacy system integrations. When you need to work with XML data in modern JavaScript applications, REST APIs, or JSON-based systems, converting XML to JSON is the essential first step. A reliable converter saves you from writing custom parsing logic and handles edge cases like attributes, namespaces, and nested structures.
OpenToolLab's free online XML to JSON converter uses your browser's native DOMParser API to parse XML documents and transform them into clean, well-structured JSON. The converter handles all XML features: elements, attributes, text content, CDATA sections, comments, and namespace declarations. Attributes can be mapped with a configurable prefix (like @) to distinguish them from child elements.
Privacy is guaranteed because all processing happens locally. Unlike server-based converters that upload your XML data, OpenToolLab never sends anything over the network. Your configuration files, API payloads, and sensitive documents stay on your device. Verify this by opening your browser's Network tab during conversion — zero outgoing requests.
The converter produces clean, pretty-printed JSON output that is ready to use in any JavaScript application. Nested XML elements become nested JSON objects, repeated elements become arrays, and attribute values are preserved with their original types. The output follows JSON best practices with proper quoting, valid syntax, and configurable indentation.
Common use cases include migrating SOAP API responses to REST-based systems, parsing XML configuration files for web applications, converting RSS feeds to JSON for JavaScript processing, and integrating legacy XML systems with modern microservices. The converter is also valuable for developers learning to work with both data formats.
OpenToolLab imposes no limits on conversion volume or file size. Convert as many XML documents as you need, with no signup, no daily caps, and no premium tier. The tool works offline after the first load, making it usable in air-gapped networks, on flights, or in any environment without internet access.
FAQ
XML to JSON Converter — frequently asked questions
What is an XML to JSON converter?
An XML to JSON converter transforms XML (Extensible Markup Language) data into JSON (JavaScript Object Notation) format. It parses the XML DOM structure and maps elements, attributes, and text content into JSON objects and arrays.
How do I convert XML to JSON online for free?
Paste your XML into OpenToolLab's free converter and click Convert. The tool parses and transforms your data to JSON instantly — all in your browser with no uploads and no signup.
Can I convert complex XML with attributes to JSON?
Yes. XML attributes are automatically mapped to JSON properties. You can configure a prefix (like @) to distinguish attributes from child elements.
Is this XML to JSON converter private?
Absolutely. All conversion happens in your browser using the native DOMParser API. Your data is never uploaded to any server.
What is the difference between XML and JSON?
JSON is lightweight and native to JavaScript, making it ideal for web APIs. XML is more verbose but supports attributes, namespaces, and schemas, making it common in enterprise systems and legacy applications.
How do I handle XML namespaces?
The converter automatically handles XML namespaces. Namespace prefixes are preserved in the JSON output as property names, maintaining the original structure.
Does this tool preserve the original structure?
Yes. The converter maintains the hierarchical structure of your XML document. Nested elements become nested objects, repeated elements become arrays, and attributes are mapped to properties.
Can I format the JSON output?
Yes. The converter produces pretty-printed JSON with configurable indentation (2 or 4 spaces) for easy reading and debugging.
How do I convert XML to JSON in my browser?
Open OpenToolLab's XML to JSON converter, paste your XML data, and click the Convert button. The conversion happens instantly using your browser's built-in parser — no installation required.
Can I convert large XML files to JSON?
Yes. The converter handles large XML documents efficiently using the browser's native DOMParser. Very large files may take a moment but process entirely in your browser's memory.
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