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JSON to XML Converter

Convert JSON to XML and XML back to JSON. Support attribute/node mapping, custom root elements, and pretty print formatting.

Input: 0 chars
Output: 0 chars
XML Nodes: 0
Depth: 0
Conversion: JSON → XML

About JSON to XML Converter

Our free online JSON to XML Converter is a powerful bidirectional utility that transforms JSON data into well-formed XML documents and vice versa. This tool is essential for developers working with APIs, web services, or systems that require data exchange between JSON and XML formats.

The JSON to XML conversion handles complex nested structures including objects, arrays, and primitive values. Attributes can be mapped using a configurable prefix (default "@"), and text content is handled via a special text key (default "#text"). Arrays are wrapped with configurable "item" element names, and the output can be pretty-printed with customizable indentation for readability.

The XML to JSON conversion parses well-formed XML documents and reconstructs the corresponding JSON structure. XML attributes become JSON keys prefixed with the attribute prefix, text content uses the text key, and nested elements are converted to nested objects or arrays. The output is valid JSON ready for use in modern web applications, APIs, or databases.

All processing happens directly in your browser, so your data never leaves your device. This ensures complete privacy and security for your sensitive data, including API responses, configuration files, and business documents.

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Features

Bidirectional Conversion

Convert JSON to XML and XML back to JSON with a single click. Perfect for data transformation workflows.

Attribute/Node Mapping

Customizable prefix for XML attributes and text content. Map JSON keys to XML attributes seamlessly.

Complex Structure Support

Handle deeply nested JSON objects and XML hierarchies. Arrays are converted to repeating XML elements.

Custom Indentation

Choose 2 spaces, 4 spaces, or tab indentation. Pretty print mode for readable XML output.

XML Declaration

Optionally include the standard XML declaration (<?xml version="1.0" encoding="UTF-8"?>).

Copy & Download

One-click copy to clipboard or download the converted data as a file (.json or .xml).

Auto-Convert

Enable auto-convert mode to transform your data automatically as you type in real-time.

Statistics

View input/output character counts, XML node count, and depth for quick data overview.

Privacy First

All conversion happens in your browser. Your data never leaves your device, ensuring complete security.

How to Use

1

Paste Your Data

Paste JSON or XML data into the left input editor. Click "Sample JSON" or "Sample XML" to load example data.

2

Configure Options

Set attribute prefix, text content key, root element name, indentation style, and formatting preferences.

3

Convert

Click "JSON to XML" or "XML to JSON" to perform the conversion. The result appears in the right output editor.

4

Copy or Download

Click Copy to copy the converted data to clipboard, or Download to save it as a file (.json or .xml).

Frequently Asked Questions

How are JSON objects converted to XML?

Each JSON key becomes an XML element name. For example, `｛"name": "John"｝` becomes `John`. Nested objects become nested elements. If a JSON key starts with the attribute prefix (default "@"), it becomes an XML attribute. Text content is handled using the text key (default "#text").

How are arrays converted to XML?

Arrays are converted to repeating XML elements. When "Use item for array elements" is enabled, each array item is wrapped in an `` element. For example, `｛"skills": ["JS", "Python"]｝` becomes `JSPython`. If disabled, each item uses the parent element name.

What is the attribute prefix used for?

The attribute prefix (default "@") is used to map JSON keys to XML attributes. For example, `｛"@id": "123", "name": "John"｝` becomes `John`. This allows you to specify XML attributes directly in your JSON structure.

What is the text content key?

The text content key (default "#text") is used when an XML element has both attributes and text content. For example, `｛"@id": "1", "#text": "Hello"｝` becomes `Hello`. This separates text content from child elements and attributes.

How does XML to JSON conversion work?

XML elements become JSON object keys. XML attributes become JSON keys prefixed with the attribute prefix. Text content becomes the text key. Repeating elements with the same name are converted to JSON arrays. The XML declaration and comments are ignored during conversion.

Is this JSON to XML converter free?

Yes, it is completely free to use with no registration, sign-up, or limits. You can use it as many times as you need for personal, educational, or commercial projects without any restrictions.

Does it work offline?

Yes, once the page is loaded, all JSON and XML conversion happens entirely in your browser using JavaScript. No server communication is needed, so you can use it even without an internet connection after the initial page load.

Can it handle large XML files?

Yes, this tool can handle moderately large files efficiently. Since all processing is done client-side, the performance depends on your device's capabilities. For very large files (several MBs), conversion may take a few extra moments.

Is my data secure?

Absolutely. All JSON and XML conversion happens directly in your browser using JavaScript. Your data is never sent to any server, stored, or logged. This ensures complete privacy and security for sensitive information like API keys, configuration files, and business documents.