The HTML Minifier reduces HTML file size by removing comments and collapsing redundant whitespace between tags, while safely preserving the contents of script, style, pre, and textarea elements.
What is an HTML Minifier?
An HTML minifier removes characters that are unnecessary for the browser to render a page — HTML comments and the extra whitespace between tags — without changing how the page looks. The result is a smaller file that downloads faster.
Our HTML Minifier is careful about what it touches. It protects the contents of pre, textarea, script, and style elements, where whitespace is significant, so your formatted code, preformatted text, and inline scripts are never corrupted by the compression.
What Gets Removed
- HTML comments (conditional comments for legacy browsers are preserved)
- Whitespace and line breaks between adjacent tags
- Runs of multiple spaces collapsed to a single space
- Contents of pre, textarea, script, and style are left untouched
Why Minify HTML?
Smaller HTML means faster page loads, lower bandwidth usage, and better Core Web Vitals scores — all of which improve user experience and SEO rankings. For high-traffic pages, even a small percentage reduction adds up to meaningful bandwidth savings.
Minification is a standard production build step. You author readable, well-indented HTML during development, then minify it before deployment to ship the smallest possible payload to your users.
Understanding the Size Savings
The tool reports the original size, the minified size, and the percentage saved, all measured as UTF-8 bytes to match real transfer size. Heavily commented and deeply indented documents see the largest reductions. Everything runs locally in your browser, so your markup stays private.
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