XML to JSON Converter.

Paste your XML data or upload an .xml file into the input area above, then click Convert. The parser converts XML elements to JSON keys, attributes to @_-prefixed fields, and repeated elements to arrays. Download the .json file or copy the output. All processing is client-side.

Use the org.json library:
import org.json.XML;
String json = XML.toJSONObject(xmlString).toString(2);
Or with Jackson: add jackson-dataformat-xml and use:
XmlMapper xmlMapper = new XmlMapper();
JsonNode node = xmlMapper.readTree(xmlString);
String json = new ObjectMapper().writeValueAsString(node);

Use Newtonsoft.Json (Json.NET):
XmlDocument doc = new XmlDocument();
doc.LoadXml(xmlString);
string json = JsonConvert.SerializeXmlNode(doc, Newtonsoft.Json.Formatting.Indented);
For System.Text.Json, convert XML to an intermediate Dictionary first, then serialize.

In Postman, use a test script to transform the response:
const xml = pm.response.text();
const json = xml2js(xml); // using built-in xml2js
pm.environment.set('responseJson', JSON.stringify(json));
Alternatively, use Postman's Visualizer to render the JSON representation, or pipe the XML through jsontofile.com for a one-off conversion.

JSON is ideal for web APIs, mobile apps, real-time communication, and modern microservices — it's lightweight, fast to parse, and native to JavaScript. XML suits enterprise integration (SOAP), document formats (Office Open XML), schema-validated data exchange (XSD), and industries with XML-based standards (finance, publishing, government). JSON dominates new development; XML persists in legacy and regulated systems.

Implement content negotiation by checking the Accept request header. In ASP.NET: services.AddMvc().AddXmlSerializerFormatters(); enables automatic XML output when the client requests it. In Express.js: use res.format({ json: () => res.json(data), xml: () => res.send(toXml(data)) }). The API returns JSON by default unless the client sends Accept: application/xml.

Encode the XML as a string value within a JSON field:
{"format": "xml", "payload": "<data><name>John</name></data>"}
Be sure to escape XML special characters: < → \u003c, > → \u003e, & → \u0026. Alternatively, use Base64 encoding: {"payload": ""}. For complex integrations, consider converting XML to native JSON objects before embedding.

The simplest way is the XML to JSON converter on jsontofile.com. Paste your XML, click Convert, and copy or download the JSON. For programmatic use, libraries like fast-xml-parser (JavaScript), xmltodict (Python), or org.json.XML (Java) handle the conversion reliably.