HTML Minifier

Minify and compress your HTML code instantly. Remove whitespace and comments to reduce file size and improve load times with our free online tool.

Minification Options

Remove Comments

Remove Whitespace

Collapse Spaces

Input HTML

Minified HTML

Leaner HTML, Faster Sites

Reduce your HTML file size instantly. Strip unnecessary code, improve parsing speed, and enhance SEO performance.

Web Standard

Compatible with HTML5 and older versions, ensuring safe compression for any web project.

Speed Boost

Smaller HTML files mean faster Time to First Byte (TTFB) and better Core Web Vitals.

Deep Compress

Removes comments, collapses whitespace, and trims attributes without affecting content.

Safe Mode

Preserves conditional comments and crucial scripts to prevent breaking your site.

How this HTML Minifier works

This optimization tool compresses HTML documents removing unnecessary characters—whitespace, comments, redundant quotes—and applying safe transformations reducing file sizes without affecting rendering behavior or functionality. Minification decreases bandwidth consumption, accelerates page loads, and improves Core Web Vitals metrics critical for search rankings. The minifier strips non-functional whitespace between tags, collapses inline whitespace sequences, removes HTML comments and optional closing tags, shortens attribute values where permissible, and minifies embedded CSS/JavaScript through integrated processors. Users configure aggressiveness balancing compression ratios against compatibility considerations, generate source maps linking minified output to beautified originals for debugging, and integrate minifiers into build pipelines via CLI tools or task runners. Safety modes preserve whitespace affecting layout (inline elements, pre tags), maintain conditional comments for legacy browser support, and validate output ensuring no semantic changes occurred. Applications include production deployment reducing page weight, improving mobile performance on bandwidth-constrained connections, or combining with compression (gzip, Brotli) for maximum transfer efficiency.

How to Use

Paste or Upload

Enter your HTML code or upload an .html file.

Configure

Choose minification options.

Export

Copy or download the minified HTML.

Example Usage

Minifying HTML by removing whitespace.

Input

<div> <h1>Hello</h1> <p>World</p> </div>

Output

<div><h1>Hello</h1><p>World</p></div>

Frequently Asked Questions

What does an HTML Minifier do?

It reduces HTML size by removing extra spaces, line breaks, and comments. Smaller HTML can load faster and improve performance, especially on mobile.

Will minifying HTML break my page?

It should not if your HTML is valid. Minifiers preserve meaning, but invalid markup or broken inline scripts can cause issues. If something breaks, validate your HTML and retry.

Should I minify HTML during development?

Usually no. Keep formatted HTML for development so debugging is easy. Minify for production builds when you care about speed and file size.

Does HTML minification help SEO?

Indirectly, yes. Faster pages can improve user experience and Core Web Vitals, which can support better search performance over time.

Is this HTML Minifier secure?

Yes. It runs 100% client-side, so your HTML is processed in your browser and never uploaded to a server.

Related Tools

The HTML Minifier is maintained by CodeItBro. We aim to provide the best free developer tools on the web. If you have feedback or suggestions, please visit our contact page.

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