HTML Minifier
Compress and minify your HTML to reduce file size
Input
Output
What is HTML Minification?
HTML minification is the process of removing unnecessary characters from HTML source code without changing its functionality. This includes stripping out comments, collapsing extra whitespace, and removing line breaks. The result is a smaller file that browsers parse and render just as well as the original.
According to web.dev, reducing the size of your HTML documents is a key step in optimizing page load performance. The WHATWG HTML Living Standard allows optional whitespace between tags, which means browsers will render minified HTML identically to the formatted version.
Everything runs in your browser — no server uploads, no data collection. Paste your HTML, get the minified version instantly, and copy or download the result. Your code stays private.
How to Use the HTML Minifier
Follow these three steps to minify your HTML. Each step uses the buttons and panels on this page.
Paste, Upload, or Load Sample
Paste your HTML into the left Input panel, or click Upload to load an .html, .htm, or .txt file. Click Sample to load example HTML that demonstrates the minification effect.
<!DOCTYPE html>
<html>
<head>
<title>My Page</title>
</head>
<body>
<!-- Main content -->
<h1>Hello World</h1>
<p>Welcome to my site.</p>
</body>
</html>The minifier works with any HTML — full documents, fragments, or templates.
View Minified Output
The right Output panel shows the minified HTML instantly. Comments are removed, whitespace is collapsed, and the file size is reduced while preserving the structure and functionality.
Copy, Download, or Beautify
Click Copy to copy the minified HTML to your clipboard. Click Download to save as an .html file. Need to read the code again? Click Beautify to re-format it with proper indentation. Use Clear on the input panel to start fresh.
When You'd Actually Use This
Reducing Page Load Time
Smaller HTML files download faster. Minifying your HTML before deploying to production can shave kilobytes off your page size, which adds up across millions of page views. Every byte saved improves Core Web Vitals scores.
Optimizing for Production
Most build tools minify JavaScript and CSS, but HTML is often overlooked. Adding HTML minification to your deployment pipeline ensures every part of your front-end is optimized for delivery.
Reducing Bandwidth Costs
For high-traffic sites, even a small reduction in HTML size translates to significant bandwidth savings. Minified HTML paired with gzip or <a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Encoding" target="_blank" rel="noopener">Brotli compression</a> delivers the best results.
Cleaning CMS-Generated HTML
Content management systems like WordPress often generate bloated HTML with excessive whitespace, comments, and unnecessary attributes. Minification cleans this up, resulting in leaner, faster-loading pages.
Common Questions
Does minification break my HTML?
No. Minification only removes characters that have no effect on how the browser renders the page — comments, extra whitespace, and redundant line breaks. The structure and functionality remain identical.
Is my HTML data stored?
No. All processing happens in your browser using JavaScript. Your HTML never leaves your computer.
What about content inside pre, script, and style tags?
The minifier preserves content inside <pre>, <script>, <style>, and <textarea> tags. These elements rely on whitespace for formatting or contain code that could break if modified.
How much size reduction can I expect?
Typical savings range from 10% to 30%, depending on how much whitespace and comments your original HTML contains. Well-formatted code with lots of indentation will see the biggest reductions.
Can I reverse the minification?
Yes — click the Beautify button on the output panel to re-format the minified HTML with proper indentation. Note that comments removed during minification cannot be restored.
Should I minify HTML if I already use gzip compression?
Yes. Minification and gzip/Brotli compression work together — minification reduces the source size, and compression further reduces the transfer size. Both are recommended by web.dev.
Related HTML & Minification Tools
HTML minification is just one optimization step. Here are other tools that complement this one: