Minify HTML Online

What HTML minification removes

Minifying strips HTML comments, removes whitespace-only gaps between block-level tags, and collapses runs of spaces and line breaks down to the minimum. The tags, attributes and visible text are untouched — only the formatting whitespace disappears. Because browsers ignore whitespace between block elements, the rendered page looks identical; it is simply lighter on the wire.

Elements where whitespace is meaningful, like <pre> and <textarea>, are preserved exactly so the page still displays what it should.

It minifies the CSS and JS inside too

A page is mostly markup, but its inline <style> and <script> blocks can be a large share of its weight. This minifier compresses those blocks with its CSS and JavaScript engines as it goes, so the whole document shrinks, not just the tags. The JavaScript is minified conservatively — line breaks that matter for automatic semicolon insertion are kept — so the page keeps working after compression.

Why minify HTML

• Smaller pages reach first paint sooner, which helps Core Web Vitals.
• Less markup means less to parse, a real win on slow devices.
• Minified HTML compresses further under gzip and Brotli.
• It is the production-ready form — keep readable HTML in your source and serve the minified copy.

How to minify HTML

Paste your page or fragment into the tool and switch to the Minify tab. The compressed markup appears on the right with the percentage saved, so you can see the benefit immediately. Copy it or download it as an .html file. When you need to read it again, the same tool beautifies the minified markup back into clean, nested code.

Local and private

Minifying runs entirely in your browser with JavaScript. Whatever your markup contains — draft content, internal links, template data — none of it is uploaded. You can verify it by minifying with the network tab open, or by going offline and watching the tool keep working. There is no server round-trip, so even a large page compresses the instant you paste it.