XML Prettifier
Format and beautify your XML code with proper indentation, syntax validation, and error highlighting.
Input XML
0 characters
Formatted Output
Ready
What is an XML Prettifier?
An XML prettifier (also called an XML formatter or beautifier) is an online tool that transforms compact, minified XML code into a human-readable format with proper indentation and line breaks. Our XML prettifier also validates your XML syntax, highlights errors, and offers minification for production use.
XML (Extensible Markup Language) is a widely-used markup language for storing and transporting structured data in web services, configuration files, and data exchange between systems. While minified XML is efficient for machines, it's difficult for humans to read and debug. That's where an XML formatter becomes essential for developers.
How to Use the XML Formatter
1. Paste your XML code into the input editor on the left
2. Click "Prettify" to beautify with proper indentation (2, 4, or 8 spaces)
3. Use "Minify" to compress XML for production use
4. Toggle "Preserve comments" to keep or remove XML comments
5. Click "Download" to save the formatted output as an .xml file
💡 All processing happens in your browser—your data never leaves your device.
Common Use Cases
• SOAP/REST API Messages
Format XML API requests and responses to quickly identify structure and troubleshoot issues
• Configuration Files
Beautify web.config, pom.xml, and other XML config files for better readability
• SVG Optimization
Clean and format SVG graphics files for easier editing and version control
• RSS/Atom Feeds
Format feed files to verify structure and debug syndication issues
• Data Migration & Integration
Validate and format XML data during ETL processes and system integrations
Key Features
✓ Syntax Validation
Instantly detect and highlight XML parsing errors
✓ Beautify & Minify
Format for readability or compress for production
✓ Comment Control
Choose to preserve or remove XML comments
✓ Download Output
Save formatted XML as a file
Frequently Asked Questions
Is my XML data safe and private?
Yes! All XML processing happens entirely in your browser using JavaScript. Your data never leaves your device and is not sent to any server. This makes our tool safe for formatting sensitive configuration files, SOAP messages, or API responses.
What's the maximum XML file size?
Since processing happens in your browser, the limit depends on your device's memory. Most modern browsers can handle XML files up to 10-50MB without issues. For extremely large XML documents, consider using a desktop XML editor.
What does "Preserve comments" do?
The "Preserve comments" option keeps XML comments (<!-- comment -->) in your output when beautifying. When disabled, all comments are removed. When minifying, comments are always removed to reduce file size.
How does XML validation work?
Our validator uses the browser's built-in XML parser to check your XML against the W3C specification. It detects common errors like unclosed tags, invalid characters, malformed attributes, and encoding issues. Error messages show the exact issue to help you fix it quickly.