XML Formatter

What is an XML Formatter?

An XML Formatter is a powerful online tool for beautifying, validating, and optimizing XML documents. Whether you’re working with configuration files, SOAP requests, SVG graphics, or any XML-based data, this formatter helps you clean up messy code, catch syntax errors, and compress files for better performance. All processing happens securely in your browser with no data sent to external servers.

How to Use the XML Formatter

Step 1: Paste or type your XML code into the input textarea.

Step 2: Select your preferred indentation level (2 or 4 spaces).

Step 3: Choose an action: click “Format” to beautify your XML with proper indentation, “Validate” to check for syntax errors, or “Minify” to remove unnecessary whitespace for smaller file sizes.

Step 4: View your result in the output panel with syntax highlighting. Use “Copy Output” to copy to clipboard, “Download XML” to save as a file, or “Convert to JSON” to transform the data structure.

Key Features & Use Cases

Format & Beautify: Transform minified or nested XML into readable, well-indented code for easier debugging and analysis.

Validate & Error Detection: Instantly identify XML syntax errors with precise line numbers and error messages.

Minification: Compress XML by removing all whitespace, reducing file size without changing structure or content.

XML to JSON Conversion: Convert XML documents to JSON format, perfect for JavaScript applications and modern APIs.

Syntax Highlighting: Color-coded output for tags, attributes, values, and comments makes reading complex XML easy.

Support for Advanced Features: Handles CDATA sections, XML declarations, namespaces, and processing instructions correctly.

Does the tool support CDATA sections?

Yes! CDATA (Character Data) sections are fully supported and preserved during formatting, validation, and minification. They are treated as text content and will not be modified or parsed as XML.

Can I convert my XML to JSON format?

Absolutely. Click the “Convert to JSON” button to instantly transform your XML structure into valid JSON. The tool creates an intelligent JSON representation that preserves attributes, nested elements, and text content, making it perfect for use with JavaScript and REST APIs.

How does the validation feature work?

The validator checks your XML for well-formedness according to XML standards. It verifies proper tag matching, correct attribute syntax, valid character encoding, and overall document structure. If errors are found, it displays a clear error message indicating the problem type.

Is my XML data kept private and secure?

Yes, 100% private. All processing happens entirely within your browser using client-side JavaScript. Your XML code never leaves your device and is never sent to any server, ensuring complete privacy and security for sensitive data.

What does minification do to my XML?

Minification removes all unnecessary whitespace, line breaks, and indentation while keeping the XML structure and content intact. This significantly reduces file size, which is useful for transmission over networks or reducing storage requirements, without changing functionality.

Can I format XML files with namespaces?

Yes, the formatter fully supports XML namespaces. It preserves namespace prefixes and declarations during formatting, validation, and conversion. All features work seamlessly with namespace-qualified elements and attributes.