How are JSON arrays converted to XML?

Arrays are converted to repeated XML elements. For example, [{'id':1},{'id':2}] becomes 1 2 .

Can I customize the root element?

Yes, you can specify a custom root element name. Arrays and multi-key objects are automatically wrapped in the root element.

What about JSON attributes?

JSON properties become XML child elements by default. The conversion follows standard JSON-to-XML mapping conventions.

Are there size limits?

The tool handles files up to 10MB efficiently. All processing happens in your browser for speed and privacy.

Is formatting customizable?

Yes, you can choose between 2, 4, or 8-space indentation for the output XML.

JSON to XML Converter: Format & Convert

Free JSON to XML Converter with Auto-Convert, Custom Formatting & Attribute Mapping

Convert JSON to XML format instantly with our free online converter. Transform JSON data into well-formed XML with customizable formatting, attribute prefix mapping, root node configuration, and real-time auto-conversion—all processed locally in your browser for complete privacy.

Key Features

Auto-Convert Mode — Real-time conversion as you type with 300ms debounce for instant feedback.
Resizable Split View — Adjustable panels for input and output with fullscreen mode for each panel.
Custom Indentation — Choose 2 spaces, 4 spaces, tabs, or compact (no indentation) formatting.
XML Declaration Control — Toggle XML declaration on/off.
Root Node Configuration — Set custom root element name for wrapping JSON data.
Attribute Prefix Mapping — Configure prefix for JSON keys that should become XML attributes (default: @_).
Ignore Attributes Option — Convert all JSON properties to elements instead of attributes.
File Upload Support — Upload JSON files directly for conversion.
Sample Data — Load example JSON with attributes to see conversion in action.
Download XML — Save converted XML as .xml file with one click.
Copy to Clipboard — Quick copy button for pasting XML into other applications.
Character Count — Real-time display of input and output character counts.
Error Handling — Clear error messages for invalid JSON with inline alerts.
Client-Side Processing — All conversion happens in your browser using fast-xml-parser library.

SimplyUtils vs Other JSON to XML Converters: Feature Comparison

Looking for an alternative to ConvertJSON, Code Beautify, FreeFormatter, or Online-Toolz? Here's how SimplyUtils compares to the most popular online JSON to XML converters:

Feature

SimplyUtils

ConvertJSON

Code Beautify

FreeFormatter

Online-Toolz

Completely Free

✓

No Account Required

✓

Auto-Convert (Real-Time)

✓

✗

Resizable Split View

✓

✗

Fullscreen Mode

✓

✗

Custom Indentation Options

Root Node Configuration

✓

✗

✓

✗

Attribute Prefix Mapping

✓

✗

XML Declaration Toggle

✓

✗

✓

✗

File Upload

✓

✗

Sample Data

✓

✗

Copy to Clipboard

✓

✗

Character Count Display

✓

✗

Client-Side Processing

✓

✗

Dark Mode

✓

✗

Why Choose SimplyUtils Over ConvertJSON or Code Beautify?

While ConvertJSON and Code Beautify offer basic conversion, SimplyUtils provides advanced features:

Real-time auto-conversion — ConvertJSON and Code Beautify require clicking a button every time. SimplyUtils converts automatically as you type with a 300ms debounce, giving you instant feedback.
Resizable split view — Adjust the input/output panel sizes to your preference. Other tools have fixed layouts that waste screen space.
Fullscreen mode — Focus on input or output by expanding either panel to fullscreen. Perfect for working with large JSON files.
Attribute prefix mapping — Control how JSON keys map to XML attributes with customizable prefix (default @_). Other tools don't offer this level of control.
Complete privacy — ConvertJSON and Code Beautify send your data to their servers. SimplyUtils processes everything locally in your browser using fast-xml-parser.

Best Alternative to FreeFormatter & Online-Toolz

FreeFormatter offers some configuration options but lacks real-time conversion and modern UI features. Online-Toolz is extremely basic with no file upload, no copy button, and limited formatting options. SimplyUtils provides a modern, feature-rich experience with auto-conversion, resizable panels, fullscreen mode, and comprehensive formatting controls—all while keeping your data private with client-side processing.

Privacy & Security

Unlike ConvertJSON, Code Beautify, FreeFormatter, and Online-Toolz which send your data to their servers, SimplyUtils processes everything locally in your browser using the fast-xml-parser JavaScript library. Your JSON data never leaves your device, ensuring complete privacy. This is especially important when converting sensitive data like customer information, financial records, or proprietary business data.

Whether you're switching from ConvertJSON's server-based processing, looking for more features than Code Beautify offers, or need better functionality than FreeFormatter and Online-Toolz provide, SimplyUtils delivers a complete JSON to XML conversion solution. Paste your JSON, configure formatting options, and get perfectly formatted XML—all without leaving your browser or compromising your privacy.