Free XML Formatter & Validator Online
Pretty print, minify, and validate XML with ease. Customize indentation, sort attributes, and collapse empty nodes. 100% client-side — your data stays private.
How to Use the XML Formatter
- Paste your XML into the input area above.
- Choose an action: Pretty Print to format or Minify to compress.
- Adjust indentation (2, 4, or 8 spaces) and toggle options like sorting attributes or collapsing empty nodes.
- Click "Process" or let it auto-process as you type.
- Check the status bar for validation results — errors highlight the problematic line.
- Use "Copy" or "Download" to save your formatted XML.
Why Use This XML Formatter
XML files can become unreadable after minification or when generated programmatically. This formatter instantly beautifies your XML with customizable indentation, making it easy to read and debug.
The built-in validator catches syntax errors and highlights the exact line, saving you from manually hunting through large XML files. Attributes can be sorted alphabetically and empty nodes collapsed for a cleaner output.
Frequently Asked Questions
No. All formatting and validation happens entirely in your browser. Your XML data never leaves your device.
The tool uses a built-in XML parser to check your document for well-formedness. If there's a syntax error, it will highlight the approximate line number and display an error message.
It converts empty elements like <tag></tag> into self-closing tags like <tag/>, reducing visual clutter.
Use Cases
API Response Formatting
Format minified XML from APIs to make SOAP responses and XML-based web service outputs human-readable.
Config File Beautifying
Beautify XML configuration files for web servers, build tools, and application settings to improve readability.
Code Review Prep
Prepare XML for code reviews by formatting and organizing the structure so reviewers can easily understand changes.
XML Validation
Validate and pretty-print XML documents to catch syntax errors and ensure well-formed markup before deployment.
SOAP Data Cleanup
Clean up SOAP response data by removing minification and formatting XML for debugging and integration work.