How can I minify HTML online for free?

Paste your HTML into the HTML Minifier and click minify. It removes comments, collapses whitespace, and strips empty attributes — while automatically protecting script, style, pre, and textarea blocks — then shows your exact byte savings.

What does HTML minification do?

It removes everything the browser does not need: comments, extra whitespace, and empty attributes. The page renders identically but the file is smaller, so it downloads faster.

Is minified HTML safe? Will it break my page?

This minifier is conservative by design: content inside pre, textarea, script, and style tags is never touched, and IE conditional comments are preserved. Whitespace-only changes between tags do not affect rendering.

How much smaller will my HTML get?

Typically 10 to 30 percent for hand-written HTML with comments and indentation. Machine-generated HTML with little whitespace shrinks less. The tool reports the exact savings.

Should I minify HTML in production?

Yes, ideally automatically at build or deploy time rather than by hand. This tool is perfect for one-off files, email templates, and quick experiments.

Is my HTML uploaded anywhere?

No. Minification runs entirely in your browser. Nothing leaves your device.

DEVELOPER TOOLS · FREE ONLINE TOOL

HTML Minifier

Shrink HTML safely: comments and whitespace out, content untouchedEvery space between your tags rides along to the visitor's browser, and across a whole page that formatting adds up. This minifier strips what humans need but browsers ignore: indentation, line breaks, comments and optional attribute quotes.

✓ Free to use✓ No sign-up✓ Ready in your browser

// HTML MINIFIER · GET STARTED

Use HTML Minifier

Shrink HTML safely: comments and whitespace out, content untouched

HTML to minify

Options

Remove comments (keeps IE conditional comments)Collapse whitespaceRemove empty class/id/style/title/alt attributes

// HTML MINIFIER · HOW IT WORKS

How to use the HTML Minifier

Paste HTML

Paste your HTML into the box.

Pick options

Choose your options (comments, whitespace, empty attributes).

Minify and copy

Click "Minify HTML", then copy or download the result.

// HTML MINIFIER · ABOUT THIS TOOL

About the HTML Minifier

This minifier takes the safe path: it protects pre, textarea, script and style blocks before touching anything, strips comments, collapses inter-tag whitespace, and optionally drops empty attributes.

The result renders exactly like the original while downloading faster, and every run reports before/after sizes and the percentage saved.

Where it helps most

Where the bytes matter most.

Landing pages

Landing pages chasing performance scores save 10 to 20 percent of document size, feeding faster first contentful paint.

HTML email

Email templates face strict size limits from some providers, and minifying is the easiest way to fit.

CMS themes

Hand-edited CMS themes accumulate formatting cruft over the years; minifying ships the clean compressed version.

Static sites

Static sites generated from readable templates can ship the compressed version while the source stays clean.

Minifying safely

One boundary keeps it safe.

Preserve pre and textarea

Whitespace inside pre blocks and textarea elements is meaningful; a careful minifier preserves those regions exactly.

Test once

Test the page once after minifying, then keep the readable source as the file you actually edit.

Regenerate on change

Regenerate the compressed copy whenever the source changes so the two versions never drift apart.

HTML Minifier: private by design

Everything runs in your browser. Your markup never leaves your device, no signup needed.

// HTML MINIFIER · COMMON QUESTIONS

HTML Minifier FAQs

Will minifying my HTML change how the page looks?

No, as long as meaningful whitespace is preserved. A safe minifier leaves the contents of <pre> and <textarea> elements untouched and keeps the single spaces between inline elements that affect rendering. Only formatting the browser ignores is removed.

How much smaller does HTML get after minifying?

Are HTML comments really worth removing?

Should I minify HTML manually or with a plugin?

Does minified HTML directly improve SEO?

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