XML Formatter
Format, beautify, and validate XML documents online with our free XML formatter tool
XML Formatter - Format and Beautify XML Online
Our free XML formatter tool helps you format, beautify, and validate XML documents instantly. Whether you're working with configuration files, data exchange formats, or web services, our XML formatter makes your XML code readable and properly structured.
What is XML Formatting?
XML (eXtensible Markup Language) formatting is the process of organizing XML code with proper indentation, line breaks, and spacing to make it human-readable. Well-formatted XML is easier to read, debug, and maintain. Our tool automatically:
- Adds proper indentation - Nests child elements with consistent spacing
- Inserts line breaks - Separates elements for better readability
- Validates syntax - Checks for XML structure errors
- Preserves content - Maintains all original data and attributes
Key Features of Our XML Formatter
🔧 Real-time Formatting
Format your XML instantly as you type. No need to click buttons - see the formatted result immediately in the output panel.
✅ XML Validation
Our tool validates your XML syntax and highlights any errors, helping you identify and fix issues quickly.
📁 File Upload Support
Upload XML files directly from your computer. Supports files of any size and automatically processes them.
📋 Copy & Download
Copy formatted XML to your clipboard or download it as a .xml file for use in your projects.
🎨 Syntax Highlighting
Beautiful syntax highlighting makes it easy to distinguish between tags, attributes, and content.
Common Use Cases
Configuration Files
Format XML configuration files for applications, servers, or development tools. Proper formatting makes configuration management much easier.
Data Exchange
When working with APIs or data feeds that return XML, formatting helps you understand the structure and debug issues.
Web Services
SOAP web services and REST APIs often use XML for request/response data. Formatting makes debugging and development more efficient.
Documentation
Create well-formatted XML examples for documentation, tutorials, or code samples.
XML Formatting Best Practices
Consistent Indentation
Use 2 or 4 spaces for indentation consistently throughout your XML document. Our formatter uses 2 spaces by default.
Proper Nesting
Ensure all XML elements are properly nested and closed. Our validator will catch nesting errors.
Meaningful Element Names
Use descriptive, lowercase element names with hyphens for multi-word names (e.g., <user-name>).
Attribute Organization
Place attributes on the same line as the opening tag, or use our formatter's attribute wrapping feature for long attribute lists.
XML vs Other Formats
XML vs JSON
While JSON is more compact and easier to parse, XML provides better support for metadata, namespaces, and complex document structures. XML is still widely used in enterprise applications and web services.
XML vs HTML
XML is a markup language like HTML, but XML is designed to carry data rather than display it. XML is more strict about syntax and doesn't have predefined tags like HTML.
Tips for Using Our XML Formatter
- Start with sample data - Click the "Sample" button to see how the formatter works with example XML
- Upload large files - For large XML files, use the upload feature instead of copy-pasting
- Check validation errors - If formatting fails, look for validation errors in the output
- Use copy feature - Copy the formatted result to your clipboard for easy pasting into your code editor
- Download results - Save formatted XML files directly to your computer
Browser Compatibility
Our XML formatter works in all modern browsers including Chrome, Firefox, Safari, and Edge. No plugins or additional software required - everything runs in your browser.
Privacy & Security
Your XML data is processed entirely in your browser. We don't store, log, or transmit your XML content to our servers. Your data remains private and secure.
Frequently Asked Questions
Is the XML formatter free to use?
Yes, our XML formatter is completely free to use. There are no registration requirements, usage limits, or hidden fees. You can format as many XML documents as you need.
Does the formatter validate XML syntax?
Yes, our XML formatter includes built-in validation that checks for proper XML syntax, including well-formed tags, proper nesting, and valid attribute formatting. Any syntax errors will be highlighted in the output.
Can I upload large XML files?
Yes, you can upload XML files of any size. The formatter processes files entirely in your browser, so there are no server-side file size limits. However, very large files may take longer to process depending on your browser's performance.
What XML versions are supported?
Our formatter supports all standard XML versions including XML 1.0 and XML 1.1. It handles namespaces, CDATA sections, comments, and processing instructions correctly.
Is my XML data secure?
Absolutely. All XML processing happens in your browser - we don't send your data to our servers. Your XML content never leaves your device, ensuring complete privacy and security.
Can I customize the formatting options?
Our formatter uses sensible defaults (2-space indentation, 80-character line length) that work well for most use cases. The formatting is optimized for readability and follows XML best practices.
Does the tool work offline?
Once the page is loaded, the XML formatter works offline. You can format XML documents without an internet connection, making it perfect for working in environments with limited connectivity.
What if my XML has formatting errors?
If your XML contains syntax errors, the formatter will display an error message and show you what's wrong. Fix the errors in the input panel, and the formatter will process the corrected XML.
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