HTML Minifier & Code Compressor

How to Minify and Compress HTML Documents

The HTML Minifier & Code Compressor removes unnecessary characters from HTML source files without changing the way web browsers render the document. By stripping code comments, collapsing repeated whitespace, and minifying embedded <style> and <script> tags, your web pages load significantly faster, improving Google Core Web Vitals (Largest Contentful Paint LCP and First Contentful Paint FCP).

Step-by-Step Instructions:

Paste or Load HTML: Paste your formatted HTML code into the left text box or choose one of the preset templates (Full HTML5 Page, UI Component Card, or Inline SVG).
Select Compression Options:
- Strip HTML Comments: Removes  comments while preserving Microsoft conditional comments.
- Collapse Whitespaces: Strips redundant spaces, tabs, and newlines between HTML elements.
- Minify Inline CSS: Compresses CSS declarations within <style> blocks.
- Minify Inline JS: Removes JavaScript comments and whitespace within <script> blocks.
- Clean Boolean Attributes: Simplifies attributes like disabled="disabled" to disabled.
View Real-Time Compression Stats: Monitor the original vs minified byte size, percentage reduction, and total bytes saved.
Copy or Download: Click Copy Minified HTML or Download (.min.html) to use the optimized markup in production.

Why Minify HTML?

⚡ Faster TTFB & Page Load Speed

Minifying HTML reduces document transfer size over HTTP networks, accelerating Time to First Byte (TTFB) and DOM parsing.

📉 Reduced CDN & Bandwidth Costs

Compressing HTML payloads by 20% to 50% lowers egress bandwidth costs across server hosting and CDN providers.

📱 Mobile Performance Optimization

Smaller DOM sizes load faster over slow cellular networks (3G/4G) and consume less CPU memory on mobile devices.

🏆 Better Google Search Rankings

Google uses page speed as an active search ranking factor. Optimized HTML ensures high Google PageSpeed Insights scores.

Frequently Asked Questions

Will minifying HTML break preformatted text blocks (<pre>, <code>)?

No. The minifier automatically isolates and protects <pre>, <code>, and <textarea> elements so their internal line breaks and indents are completely preserved.

Does this minifier also compress inline JavaScript and CSS?

Yes. When enabled, the tool compresses CSS inside <style> tags and JavaScript inside <script> tags, stripping comments and redundant whitespace.

Is my source code secure?

Yes. All minification executes locally within your browser using JavaScript. No code is uploaded to any remote server.