XML and JSON are the two most widely used formats for representing structured data. XML is a tag-based markup language commonly used for SOAP APIs, configuration files, and document exchange, while JSON is a lightweight format that has become the standard for REST APIs and web applications. This tool lets you convert between the two formats instantly in your browser without any coding.

User Guide

Select the conversion direction at the top (XML → JSON or JSON → XML).
Paste your XML or JSON data into the left input area.
Click the "Convert" button to see the result on the right side.
Adjust the Compact, Ignore Comments, and Trim options as needed.
Click "Copy" to copy the result to your clipboard.

Core Features

Bidirectional conversion between XML and JSON
Compact output mode to remove unnecessary whitespace
Option to ignore XML comments during conversion
Automatic whitespace trimming
XML attributes automatically converted with @ prefix
Built-in sample data for quick testing
One-click copy of conversion results

When This Comes in Handy

Converting SOAP API responses to REST API format
Migrating legacy XML configurations to JSON-based tools
Parsing XML feeds (RSS, Atom) into JSON for web applications
Unifying data formats for inter-service communication
Adapting Spring or .NET XML configs for Node.js projects

Common Questions

Q: What is the fundamental difference between XML and JSON?

XML is a markup language that wraps data in tags, while JSON is a lightweight format using key-value pairs. XML supports attributes, namespaces, and schema validation, whereas JSON has a simpler structure and faster parsing speed.

Q: How are XML attributes represented in JSON?

XML attributes are converted to keys prefixed with @. For example, <book category="fiction"> becomes {"@category": "fiction"} in JSON.

Q: How are CDATA sections handled?

XML CDATA sections are represented as a #cdata key in the JSON output. Reverse conversion handles them properly as well.

Q: Is the XML declaration (<?xml ...?>) included in conversion?

By default, the XML declaration is ignored. It is stripped when converting to JSON and not automatically added when converting from JSON to XML.

Q: What does the Compact output option do?

Enabling Compact output removes indentation and line breaks from the result, reducing file size. This is useful for API transmission or storage optimization.

Q: Can I convert XML that contains comments?

Yes. When the "Ignore Comments" option is enabled, XML comments are automatically removed during conversion since JSON does not natively support comments.

Q: Does it handle XML with namespaces?

Namespace prefixes (e.g., ns:tag) are preserved as-is in key names by default. For complex namespace handling, manual review of the output is recommended.

Q: What happens if the input data is invalid?

An error message is displayed if invalid XML or JSON is provided. Review the error details, fix your data, and try converting again.

Q: Is my data sent to a server?

No. All conversions are processed locally in your browser. Your input data is never transmitted to or stored on any server, so you can use the tool with confidence.

Q: Can I use this on mobile devices?

Yes. The tool is built with a responsive design and works seamlessly on smartphones, tablets, and all other devices.

XML ↔ JSON Converter

What is XML ↔ JSON Converter?