Convert XML and JSON with a clear structure

The compact model for structured data

An XML root element becomes a JSON key of the same name. Attributes are under @attributes, simple text next to attributes under #text. Repeated elements of the same name become arrays. Values from XML remain strings, so that, for example, product numbers and leading zeros remain unchanged. Indentation empty space between elements is omitted in the compact model.

Mixed content needs a unique order

For a paragraph with text, a bold word and further text, a pure key-value assignment would lose the order. For this, select the ordered model: nodes contains document nodes, elements consist of name, attributes and children. Text, CDATA, comments and processing instructions are displayed separately. The compact model rejects such cases instead of quietly simplifying them.

Check namespaces and XML output

Namespace prefixes and xmlns declarations are retained. With JSON → XML, exactly one valid root element must be created; prefixes require the appropriate namespace declaration. After generation, the XML is checked again for well-formedness. An XSD test does not take place. DTDs and own entity declarations are not processed.

Conscious boundaries instead of seemingly lossless conversion

XML and JSON have different data models. An original XML declaration, the exact entity spelling and JSON data types cannot always be recovered identically. Large JSON numbers are transferred to XML as exact text. The limit is 500 KB input, 30,000 nodes and 80 levels. All inputs remain local.

Frequent questions