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JSON to XML

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JSON to XML Converter — Convert JSON to XML Online Free

What is JSON to XML?

Convert JSON data to well-formed XML. Supports nested objects, arrays, and all JSON value types with proper indentation.

JSON and XML are the two most common data interchange formats used in software development. While JSON dominates modern web APIs due to its compact syntax and native JavaScript support, many enterprise systems, SOAP web services, and legacy applications still require XML. Our JSON to XML converter bridges this gap by transforming any valid JSON structure into well-formed, properly indented XML. The conversion handles all JSON types: strings become text content, numbers and booleans become text nodes, null values produce self-closing tags, arrays are wrapped with indexed child elements, and nested objects create hierarchical XML elements. Special characters in keys are automatically sanitized to produce valid XML element names. The output includes an XML declaration header and uses 2-space indentation for readability.

How to Use JSON to XML

  1. Paste or type your input into the editor on the left panel.
  2. Results update automatically while you type. You can also press Ctrl+Enter to force a refresh.
  3. View the result in the output panel on the right with full syntax highlighting.
  4. Use Copy or Download to export the result.
  5. Drag and drop .json or .txt files directly into the editor.
  6. Toggle Tree View for an interactive, collapsible view of the JSON structure.

Example

Input:

{"bookstore":{"book":[{"title":"The Great Gatsby","author":"F. Scott Fitzgerald","year":1925},{"title":"1984","author":"George Orwell","year":1949}]}}

Output:

<?xml version="1.0" encoding="UTF-8"?>
<root>
  <bookstore>
    <book>
      <item_0>
        <title>The Great Gatsby</title>
        <author>F. Scott Fitzgerald</author>
        <year>1925</year>
      </item_0>
    </book>
  </bookstore>
</root>

Common Use Cases

  • Migrating data from JSON-based APIs to XML-based legacy systems
  • Generating XML feeds from JSON data sources
  • Converting JSON configuration to XML format for Java/.NET applications
  • Creating SOAP payloads from RESTful JSON responses
  • Exporting data for systems that only accept XML input

JSON vs XML Comparison

Syntax
Key-value pairs, arrays
Tags with attributes
Readability
More compact
More verbose
Data Types
String, number, boolean, null, array, object
All text (needs schema for types)
File Size
Smaller
Larger due to closing tags
Parsing
Native in JavaScript
Requires XML parser
Comments
Not supported
Supported

Common Errors

  • Invalid JSON input — make sure your JSON is valid before converting
  • Keys with special characters get sanitized (spaces become underscores)
  • Arrays produce <item_0>, <item_1> elements — not repeated same-name tags
  • Null values produce self-closing tags like <field />
  • Root element is always <root> — rename after export if needed

Why Use Our JSON to XML?

  • 100% client-side — your data never leaves your browser. No server processing, no data collection.
  • No sign-up required — start using the tool instantly with no registration or installation.
  • Keyboard shortcuts — press Ctrl+Enter to run, ? for shortcuts list, Ctrl+B to toggle sidebar.
  • Persistent state — your input is automatically saved across sessions using local storage.
  • IDE-style interface — Monaco Editor (the engine behind VS Code) with syntax highlighting and error detection.
  • Multi-format conversion — convert between JSON, XML, CSV, and YAML without switching tools.

Frequently Asked Questions

How does JSON to XML conversion work?

Each JSON key becomes an XML element name. String, number, and boolean values become text content. Arrays are wrapped in a parent element with numbered child items (item_0, item_1). Null values produce self-closing tags.

Does it handle deeply nested JSON?

Yes. The converter recursively processes all levels of nesting. Deeply nested objects and arrays are converted into properly indented, hierarchical XML elements.

Can I convert XML back to JSON?

This tool currently only converts JSON to XML. An XML to JSON converter is planned for a future release. You can use other tools in the meantime for the reverse conversion.

What happens to special characters in JSON keys?

JSON keys containing spaces, dots, or other special characters are automatically sanitized. Non-alphanumeric characters (except hyphens and underscores) are replaced with underscores to produce valid XML element names.

Is the output valid XML?

Yes. The output includes a proper XML declaration (<?xml version="1.0" encoding="UTF-8"?>) and all elements are properly nested and closed. Special characters in values are escaped using XML entities (&amp; &lt; &gt;).

Try JSON to XML Now

Paste your data into the editor above for instant processing. Use Ctrl+Enter anytime to re-run quickly.

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