🔧 XML Formatter

Professional XML formatter with syntax validation, beautification, minification, and comprehensive XML processing capabilities for developers and data professionals

How to Use This XML Formatter

Basic Usage:

  1. Fill in the required fields above
  2. Adjust any optional settings as needed
  3. Click the button to generate your result
  4. Copy or download the output

Tips: This xml formatter provides instant results and works entirely in your browser for privacy.

How to Use This XML Formatter

Step-by-Step Guide:

  1. Paste or type your XML content into the input area
  2. Choose your preferred formatting type (beautify, minify, validate, or analyze)
  3. Select indentation preferences (spaces or tabs) and size
  4. Configure attribute handling and sorting options
  5. Choose comment and whitespace processing preferences
  6. Enable statistics and validation reporting as needed
  7. Select XML encoding handling for output formatting
  8. Choose comprehensive output format with analysis details
  9. Review formatted XML and validation results
  10. Copy formatted XML or download for use in your project

How It Works

The Algorithm Behind XML Processing:

Our XML formatter uses advanced JavaScript DOM parsing and tree traversal algorithms for comprehensive XML document processing. Here's how it works:

  1. XML Parsing: Parse input using browser's native DOMParser with comprehensive error handling
  2. Validation: Check well-formedness, syntax compliance, and structural integrity
  3. Tree Traversal: Recursively process DOM tree while preserving semantic structure
  4. Namespace Handling: Process namespace declarations and prefix mappings correctly
  5. Formatting Application: Apply indentation, spacing, and attribute formatting rules
  6. Content Preservation: Maintain all content, CDATA, comments, and processing instructions
  7. Output Generation: Serialize formatted DOM back to clean XML string format
  8. Statistics Analysis: Calculate document metrics, file size, and structural information

Example Processing:

  • Input: Minified XML: `<root><item id="1">value</item></root>` (42 chars)
  • Beautified Output: Properly indented with line breaks (68 chars formatted)
  • Validation: Well-formed XML with proper element nesting and attribute quoting
  • Statistics: 2 elements, 1 attribute, 1 text node, UTF-8 encoding detected

Advanced Features:

  • Standards Compliance: Follows W3C XML 1.0/1.1 specifications and best practices
  • Error Recovery: Graceful handling of malformed XML with detailed error reporting
  • Performance Optimization: Efficient memory usage for large documents up to 1MB
  • Cross-browser Support: Works consistently across all modern browsers and devices