HTML Minifier

View the source of most web pages and you will find a second, invisible document: comments, indentation and blank lines that exist purely for the humans who wrote the markup. Minification removes that editorial layer — HTML comments, collapsible whitespace between tags, and redundant blank lines — delivering the same rendering in fewer bytes. This minifier is careful where it matters: the contents of pre, textarea, script and style blocks are preserved byte-for-byte, because whitespace inside them is content, not formatting. Paste a page or a fragment, see the compressed result and the saving, and ship leaner HTML — especially worthwhile on content-heavy templates repeated across thousands of page views.

Quick Answer: Paste HTML to strip comments and collapsible whitespace and get a smaller page that renders identically, with protected blocks left untouched.

Free Online Tool

Same page, smaller suitcase.

Your HTML

0 BOriginal

0 BMinified

0%Saved

Minified HTML

How to Use the HTML Minifier

Paste the full page or HTML fragment into the box.
Press Minify HTML.
Review the byte saving — heavily formatted templates shrink the most.
Copy the minified markup into your template or static page.
Spot-check the rendered page, especially anywhere you used preformatted text.

Key Features

Removes HTML comments and collapsible inter-tag whitespace.
Protects pre, textarea, script and style contents byte-for-byte.
Reports original size, minified size and percentage saved.
Safe for fragments as well as complete documents.
Runs in your browser — unreleased templates stay private.

Best Practices and Tips

Inline elements separated by a space in source render with a space — this minifier collapses whitespace runs to a single space in text areas rather than deleting them outright, preserving your layout.
Keep readable source files as the masters; minify copies for production.
Template-level minification pays off most: one template improvement multiplies across every page using it.
Conditional comments for legacy browsers are removed like other comments — if you still rely on them, minify with a build tool that preserves them.
Pair with CSS and JS minification and server compression for the full page-weight programme.

Common Mistakes to Avoid

Minifying HTML with meaningful spaces inside ordinary text and expecting zero visual change everywhere — inline spacing is preserved here, but exotic layouts deserve a visual check.
Removing comments that carry licences or attribution the author required you to keep.
Minifying the only copy of a hand-written page and then struggling to edit the wall of markup later.
Assuming minification fixes heavy pages when images and fonts account for most of the weight.

Frequently Asked Questions

Will the minified page look exactly the same?

In normal layouts, yes. The transforms remove comments and collapse formatting whitespace; text content keeps single spaces, and protected blocks (pre, script, style, textarea) are not touched at all. Designs that deliberately exploit multi-space formatting in normal flow are the rare exception — which is why a quick visual check is advised.

How much can HTML minification save?

Usually 10 to 25 percent of the HTML file itself, depending on how comment- and indent-heavy the source is. HTML is only part of a page’s total weight, but on text-heavy sites it is a meaningful, free win.

Does it remove whitespace inside my JavaScript and CSS?

No — script and style block contents are preserved exactly. Minify those assets with the dedicated CSS and JavaScript minifiers for proper, syntax-aware compression.

What happens to comments I want to keep?

All HTML comments are treated as removable. If a comment carries a licence you must retain, keep the readable source as your legal copy and let the production file be the minified one — that is the standard arrangement.

Can I minify just a fragment, like an email template?

Yes — the tool works on any chunk of markup, and HTML emails (notoriously whitespace-heavy from table layouts) benefit particularly well.