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HTML Minifier

Remove comments and whitespace to dramatically reduce HTML file size

入力 HTML
圧縮後 HTML

About HTML Minifier

HTML Minifier is an online tool for compressing and optimizing HTML source code. Designed for web developers and front-end engineers who need to reduce HTML file sizes and improve page load performance.

Applies multiple optimizations including removal of HTML comments (<!-- ... -->), collapsing unnecessary whitespace and line breaks between tags, and stripping empty attribute values. Advanced options include removing redundant attributes (like type="text"), collapsing boolean attributes (disabled="" becomes disabled), and removing attribute quotes where safe.

Preformatted content within pre, code, textarea, script, and style elements is preserved intact, ensuring no visual changes to your page. CDATA sections are automatically protected. Displays real-time stats showing minified size, bytes saved, and percentage reduction so you can instantly verify the optimization impact.

When working with internal or unpublished HTML, paste only the fragments needed for the task and review the minified output before using it.

How to use HTML Minifier

  1. Paste your HTML code into the input area on the left. You can copy from a file or type directly.
  2. Adjust options as needed. Comment removal and whitespace collapsing are enabled by default. For more compression, enable redundant attribute removal, boolean attribute collapsing, or quote removal.
  3. Click the Minify button to generate the compressed HTML on the right side.
  4. Check the stats bar for original size, minified size, and reduction percentage, then click Copy to copy to clipboard. Try different option combinations to find the best settings for your HTML.

Benefits of HTML Minifier

  • Instant compression — optimize HTML and dramatically reduce file size with one click
  • Real-time stats — see before/after size and reduction percentage instantly
  • Advanced optimization — remove redundant attributes, collapse booleans, strip quotes for extra savings
  • Protects preformatted & CDATA — script, style, pre tags and CDATA sections preserved automatically
  • Flexible options — enable 6 optimization options independently for custom minification
  • Faster page loads — lightweight HTML files improve website loading speed
  • Paste only the HTML fragments needed for review when working with unpublished code

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