XML Formatter
Format, validate, and beautify XML documents
🛠️ Professional XML Formatter & Validator
Transform messy XML into beautifully formatted, readable code with our free online XML formatter. Perfect for developers, data analysts, and anyone working with XML, SOAP, RSS feeds, or configuration files. Our tool offers instant validation, formatting, and minification—all processed securely in your browser.
How to Use This XML Formatter
Paste Your XML
Copy and paste your XML content into the input editor. You can also click "Load Sample" to see an example.
Choose Operation
Select Format for beautification, Minify to compress, or Validate to check for syntax errors.
Copy & Use
Review the formatted output and validation status. Click "Copy Result" to copy to your clipboard.
Key Features
Smart Formatting
Automatic indentation and line breaks for maximum readability
XML Validation
Instant syntax checking with detailed error messages
Minification
Compress XML by removing whitespace and comments
100% Private
All processing happens in your browser—no data sent to servers
Real-time Results
Instant formatting and validation with no waiting
Easy Copy
One-click copying to clipboard for quick workflow
Common Use Cases
🔌 API Development
Format SOAP responses, validate API payloads, and debug XML-based web services for integration testing.
📰 RSS & Feeds
Create and validate RSS feeds, Atom feeds, and sitemaps for blogs, podcasts, and content distribution.
⚙️ Configuration Files
Format and validate XML config files for applications, build tools, and deployment systems.
📊 Data Exchange
Process XML data from legacy systems, import/export tools, and enterprise data integration platforms.
🧪 Testing & Debugging
Beautify minified XML for easier debugging and code review during development cycles.
📖 Documentation
Format XML examples for technical documentation, tutorials, and code samples.
Privacy & Security First
Your XML data never leaves your browser. All formatting, validation, and minification operations are performed entirely client-side using JavaScript. We don't collect, store, or transmit your data to any servers. Your sensitive configuration files and API responses remain completely private and secure.
Frequently Asked Questions
What is XML formatting and why is it important?
XML formatting (or beautification) adds proper indentation, line breaks, and spacing to XML documents, making them human-readable. This is crucial for debugging, code review, and maintaining configuration files. Well-formatted XML helps developers quickly understand document structure and identify issues.
Can this tool validate XML against a specific schema (XSD)?
Currently, our tool performs basic well-formedness validation, checking for syntax errors like unclosed tags, invalid characters, and malformed structure. Schema validation (XSD) is not yet supported but may be added in future updates. For now, it ensures your XML follows correct syntax rules.
Is there a file size limit for XML formatting?
Our tool can handle most XML documents efficiently. Very large files (over 10MB) may take longer to process depending on your browser and device performance. For optimal experience, we recommend formatting files under 5MB. All processing is done in your browser's memory.
What's the difference between formatting and minifying XML?
Formatting (beautifying) adds whitespace, indentation, and line breaks to make XML readable for humans. Minifying does the opposite—it removes all unnecessary whitespace, comments, and line breaks to reduce file size, which is useful for production environments and reducing bandwidth usage.
Can I format XML with special characters or namespaces?
Yes! Our XML formatter fully supports Unicode characters, XML namespaces, CDATA sections, processing instructions, and DTD declarations. It preserves all special characters and entity references while formatting the document structure. Complex enterprise XML documents are handled correctly.
Technical Details
This XML formatter uses the browser's native DOMParser API to parse and validate XML documents. The formatting algorithm uses recursive traversal to properly indent nested elements while preserving attributes, text content, CDATA sections, and comments. Minification removes all non-significant whitespace while maintaining XML validity. All operations are performed client-side for maximum privacy and speed.