XML to JSON Converter FAQ

Question 1

How are XML elements mapped to JSON properties?

Accepted Answer

Each XML element becomes a JSON property. The element name becomes the key. If the element contains only text, the text becomes the value. If the element contains child elements, they become a nested JSON object. If multiple sibling elements share the same tag name, they are grouped into a JSON array under that name.

Question 2

How are XML attributes handled in the JSON output?

Accepted Answer

XML attributes are mapped to JSON properties using the @attributeName convention. For example,  becomes {"@id":"42","@role":"admin"} alongside any child element properties. This keeps attributes distinguishable from child elements in the JSON output.

Question 3

What happens with mixed content — elements that contain both text and child elements?

Accepted Answer

Elements with both text content and child elements are handled by mapping the text to a #text property. For example, Hello world becomes {"#text":"Hello ","strong":"world"}. This is a necessary compromise since JSON objects can't directly represent XML's mixed content model.

Question 4

How are XML namespaces handled?

Accepted Answer

XML namespace prefixes are included in the JSON property names. An element like  becomes the property name "soap:Body". Namespace declarations (xmlns:soap=...) are mapped as @xmlns:soap attributes. The namespace structure is preserved for systems that need to process it programmatically.

Question 5

Why is the JSON output for a simple XML element sometimes an object instead of a string?

Accepted Answer

When an element has attributes, the converter must produce an object (to hold both the attribute values and the text content) rather than just a string. The text content appears as a #text property within that object. This is why Alice becomes {"@id":"1","#text":"Alice"} rather than just "Alice".

Question 6

How do I handle SOAP XML responses?

Accepted Answer

SOAP responses have a specific Envelope/Header/Body structure with namespace declarations. After conversion, the JSON output reflects this structure with namespace-prefixed keys. The resulting JSON can be explored and navigated with the JSON Formatter's tree view. For reading the SOAP XML structure before converting, validate it first with the XML Formatter.

Question 7

What is the difference between this converter and a custom XSLT transformation?

Accepted Answer

This converter applies a general-purpose mapping from XML to JSON that works for any well-formed XML. XSLT is a transformation language that lets you define precise control over how each element maps. For general-purpose XML exploration and data extraction, this tool is sufficient. For precise, production-grade transformations where the JSON structure must match a specific schema, a custom XSLT or code-based transformation gives more control.

Question 8

Is this safe to use with XML files containing sensitive data?

Accepted Answer

Yes. The converter uses the browser's native DOMParser API. No XML is transmitted anywhere — the parsing and conversion happen entirely in your browser's JavaScript engine. SOAP responses with customer data, configuration files with credentials, and internal data feeds with business records are all safe to convert here.

XML to JSON Converter

The XML-to-JSON Translation Problem

The Mapping Convention: Elements, Attributes, Text

Practical Conversion Scenarios

Validating Before Converting

Frequently Asked Questions