HTML Minifier

Minify HTML safely: strip comments, collapse whitespace and drop spaces around block tags while keeping pre, textarea, script and style exactly as they are.

HTML input

Output

Runs entirely in your browser. Your data is never uploaded.

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What is HTML Minifier?

The HTML Minifier makes HTML smaller with conservative, rendering-safe transformations: comments are removed, runs of whitespace become one space, and whitespace next to block-level tags is dropped. Content of <pre>, <textarea>, <script> and <style> is kept byte-for-byte.

How to use HTML Minifier

Paste the HTML into the input box.
Click Minify (the output also updates while you type).
Check the size line to see how much was saved.
Copy or download the minified HTML.

Example

Input

<div>
  <!-- c -->
  <p>Hello   <b>big</b>
 world</p>
  <pre>  a
 b</pre>
</div>

Output

<div><p>Hello <b>big</b> world</p><pre>  a
 b</pre></div>

When to use HTML Minifier

Use it for static pages, email templates or HTML snippets embedded in code. Gains are modest compared with gzip/brotli. It does not remove optional tags or attribute quotes, so the output stays valid and predictable.

How HTML Minifier works

A small tokenizer splits the input into tags, text, comments and raw-text blocks. Comments are dropped except Internet Explorer conditional comments (<!--[if …]>). In text, any whitespace run becomes a single space; leading/trailing spaces are removed when the neighbour is a block-level tag such as div, p, li or table, but kept between inline elements (<b>a</b> <i>b</i>), where they are visible. Whitespace inside tags is normalised; attribute values are not changed. JavaScript and CSS inside the page are not minified – use the JS or CSS Minifier for that.