HTML 整形/圧縮

HTML をフォーマットまたは圧縮

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Beautified
What is HTML Beautify & Minify?

HTML beautification formats your code with proper indentation for better readability and maintenance, while minification removes unnecessary characters, whitespace, and comments to reduce file size and improve page load speed. All processing happens locally in your browser - your HTML is never uploaded to any server.

Key Features

  • Beautify: Format HTML with proper indentation and line breaks for readability
  • Minify: Remove whitespace, comments, and unnecessary code for production
  • Validation: Detect syntax errors like unclosed or mismatched tags
  • Inline Minification: Automatically minify CSS and JavaScript within HTML
  • Remove Comments: Strip out HTML comments to reduce file size
  • Collapse Whitespace: Remove extra spaces between elements
  • SEO-Friendly: Optimize HTML structure for better search engine crawling

SEO Benefits

🚀 Why Minified HTML Improves SEO:

  • Faster Page Load: Smaller files load faster, improving Core Web Vitals (LCP, FID, CLS)
  • Better Crawl Budget: Search engines can crawl more pages in less time
  • Mobile Optimization: Reduced data usage improves mobile user experience
  • Lower Bounce Rate: Fast-loading pages keep visitors engaged
  • Clean Code: Well-structured HTML helps search engines understand content hierarchy

Use Cases

🎨 Development

Format messy HTML for better code readability and team collaboration

🚀 Production

Minify HTML to reduce file size by 20-30% and improve load times

✅ Quality Assurance

Validate HTML structure and fix common syntax errors

Performance Impact

Minifying HTML typically reduces file size by 20-30%. For a 100KB HTML file:

  • Original size: 100KB → Minified: ~70-80KB
  • Load time on 3G: ~2s → ~1.4-1.6s (30% faster)
  • Annual bandwidth savings for 1M pageviews: ~20-30GB