HTML Minifier – Compress HTML Code for Faster Load Times
Minify HTML code by removing whitespace, comments, and unnecessary characters. Reduce file size, improve page speed, and optimize for production deployment. Free, instant, and works in your browser.
What Is HTML Minification?
HTML minification removes unnecessary characters from HTML code without changing functionality. This includes whitespace, line breaks, comments, and optional tags—reducing file size for faster page loads and better performance.
What Gets Removed
| Removed | Example | Saves |
|---|---|---|
| Whitespace | Spaces, tabs, newlines | Major |
| Comments | <!-- comment --> | Moderate |
| Optional tags | </body></html> | Minor |
| Attribute quotes | class="name" → class=name | Minor |
| Empty attributes | checked="" → checked | Minor |
Before and After
Before (1,247 bytes)
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>My Page</title>
<!-- Page styles -->
<style>
body {
margin: 0;
padding: 0;
}
</style>
</head>
<body>
<!-- Main content -->
<div class="container">
<h1>Hello World</h1>
<p>Welcome to my website.</p>
</div>
</body>
</html>
After (286 bytes, 77% smaller)
<!DOCTYPE html><html><head><meta charset="UTF-8"><title>My Page</title><style>body{margin:0;padding:0}</style></head><body><div class="container"><h1>Hello World</h1><p>Welcome to my website.</p></div></body></html>
Features
| Feature | Description |
|---|---|
| Whitespace Removal | Delete spaces, tabs, newlines |
| Comment Stripping | Remove HTML comments |
| Attribute Optimization | Clean up redundant quotes |
| Safe Minification | Preserve required structure |
| Size Comparison | Show before/after file sizes |
| Copy Output | One-click copy to clipboard |
How to Use
Step 1: Paste HTML
Enter your HTML code in the input area.
Step 2: Configure Options
Choose minification level and options.
Step 3: Minify
Click Minify to compress your code.
Step 4: Copy or Download
Use the minified output in your project.
Common Use Cases
Production Deployment
- Reduce HTML file sizes before deployment
- Combine with CSS/JS minification
- Part of build pipeline
Performance Optimization
- Faster initial page loads
- Reduced bandwidth usage
- Better Core Web Vitals scores
CDN Preparation
- Smaller files = faster CDN delivery
- Reduced origin data transfer
- Lower hosting costs
Email HTML
- Email size limits
- Faster email rendering
- Better deliverability
Frequently Asked Questions
Will minification break my code?
Safe minification preserves all functionality. Only unnecessary characters are removed. Always test after minifying.
Should I minify development code?
No. Keep development code readable. Minify only for production builds.
Is there a size limit?
Handles typical web pages easily. Very large HTML files (1MB+) may slow browser performance.
Can I undo minification?
Minification is one-way. Keep your original formatted source code! Use formatters to re-beautify if needed.
Does this handle inline CSS/JS?
Basic minification of inline styles and scripts is included. For comprehensive CSS/JS minification, use dedicated tools.
Is minified code harder to debug?
Yes. Use source maps or un-minified code in development. Minified code is for production only.
Performance Impact
| Metric | Improvement |
|---|---|
| File Size | 30-70% reduction |
| TTFB | Marginally faster |
| Parse Time | Slightly faster |
| Bandwidth | Proportional reduction |
When Minification Matters Most
- High-traffic sites (bandwidth savings)
- Mobile users (slower connections)
- SEO (page speed ranking factor)
- Embedded systems (limited storage)
Minification Options
Aggressive (Maximum Compression)
- Remove all comments
- Collapse all whitespace
- Remove optional tags
- Remove attribute quotes where safe
Conservative (Safe)
- Remove extra whitespace
- Keep meaningful line breaks
- Preserve comments with conditions
- Keep all quotes
Build Tool Integration
Common Tools
| Tool | Usage |
|---|---|
| HTMLMinifier | npm package, CLI tool |
| html-minifier-terser | Modern fork with ESM |
| Gulp | gulp-htmlmin plugin |
| Webpack | html-minimizer-webpack-plugin |
| Rollup | rollup-plugin-html |
CI/CD Integration
Add minification to your build pipeline for automated optimization on every deployment.
Pro Tips
- Minify all assets — HTML, CSS, and JS together
- Combine with Gzip — Compression compounds savings
- Test thoroughly — Verify styling and scripts work
- Version control source — Never lose formatted code
- Measure impact — Use PageSpeed Insights before/after
Related Tools
Explore more optimization utilities:
- HTML Formatter — Beautify HTML
- CSS Minifier — Compress CSS
- JavaScript Minifier — Compress JS
- Image Compressor — Optimize images
- JSON Minifier — Compress JSON
Minify your HTML above for faster page loads and better performance. Essential optimization for production websites!