XML ↔ JSON Converter

Convert XML to JSON or JSON to XML in the browser with fast-xml-parser: attributes map to configurable-prefixed keys (default @), trimmed text nodes, optional compact output, optional UTF-8 XML declaration on JSON→XML, and a root wrapper for bare arrays or scalars. Convert on demand, character/node estimate, copy, download output.json / output.xml.

xmljsondata

Category: Data & Text Processing

XML ↔ JSON in the browser

Many APIs still speak XML while front ends and CLIs prefer JSON. This tool round-trips between the two formats using the fast-xml-parser library entirely in your tab: parse XML into a plain JavaScript object tree, or build XML from parsed JSON. You control whether output is compact or indented, how XML attributes appear in JSON (via a configurable prefix such as @), and whether an XML declaration is prepended when emitting XML.

XML → JSON

Paste XML and click Convert. The parser keeps attributes (with your chosen attribute name prefix on JSON keys), trims whitespace-only text noise, and produces JSON.stringify output — either minified or with 2-space indentation depending on Compact output.

JSON → XML

Paste valid JSON. Objects become element maps; bare arrays are wrapped under a synthetic root with item children; primitive roots are wrapped as value so the XML builder always receives an object. The builder honors the same attribute prefix when you encode @-style keys back to attributes, uses two-space indents when not compact, and can prepend <?xml version="1.0" encoding="UTF-8"?> when Include XML declaration is checked.

Privacy

Conversion runs client-side. Your XML and JSON are not uploaded to Dynamic Duniya servers for processing.

Frequently Asked Questions

How are XML attributes represented in JSON?

By default attribute names become JSON keys with an @ prefix (configurable in the Attribute prefix field). Text content uses the element name or #text depending on the parser’s structure for mixed content.

Will the JSON round-trip back to identical XML?

Not always. Whitespace, namespace prefixes, declaration order, and ambiguous mixed content can change. Treat output as a structural view and validate against your schema or downstream system.

Why does my JSON → XML look wrapped differently than I expect?

The tool wraps non-object roots so XMLBuilder receives a single object. Adjust your JSON to match the shape you need or post-process the XML.

Does conversion run automatically as I type?

No. Click Convert after editing so large payloads are not re-parsed on every keystroke.

Is this XML ↔ JSON tool free?

Yes. No signup is required.

Tips

Quick guidance for using our tools safely and effectively.

Privacy

Files are processed on the server for conversion only and are not used for training or shared with third parties.

Best results

Use the formats suggested in each tool. Large media files may take longer — keep the tab open until processing finishes.

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