HTML/XML Formatter
Format or minify HTML and XML code for better readability or optimization.
Input HTML/XML
About HTML & XML Formatting
Overview: HTML (HyperText Markup Language) and XML (eXtensible Markup Language) are markup languages that use tags to structure and describe content. Proper formatting makes these documents readable for developers while minification optimizes them for production.
Well-formatted code improves maintainability, debugging efficiency, and team collaboration. Minified code reduces file size for faster web page loading.
Use Cases for Formatting:
• Code review and debugging
• Understanding third-party HTML structures
• Cleaning up generated or minified code
• Teaching and documentation
• Email template development
• XML data analysis and validation
Formatting Standards
Best Practices:
Indentation:
Use 2 or 4 spaces consistently for nested elements
Line Breaks:
Place block-level elements on new lines
Attribute Formatting:
Break long attribute lists across multiple lines
Self-Closing Tags:
Use consistent format (<br /> or <br>)
Minification Benefits:
• Reduced file size: 20-40% smaller files
• Faster loading: Less data to transfer
• Lower bandwidth: Reduced hosting costs
• Better performance: Faster parsing by browsers
• SEO improvement: Page speed affects rankings
HTML vs XML Differences:
• HTML: Predefined tags, case-insensitive, forgiving parser
• XML: Custom tags, case-sensitive, strict syntax rules
• HTML5: Allows omitting certain closing tags
• XML: All tags must be properly closed
• XHTML: HTML with XML syntax rules
Common Issues to Watch For:
• Unclosed or mismatched tags
• Invalid nesting (e.g., <p><div></div></p>)
• Duplicate IDs in the document
• Unescaped special characters (<, >, &)
• Missing required attributes (alt for images)
• Deprecated HTML tags and attributes
Pro Tips:
• Use semantic HTML5 elements for better structure
• Validate your HTML with W3C validator
• Keep formatting for development, minify for production
• Use build tools for automatic minification
• Preserve comments for important documentation
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