HTML Minifier - Compress HTML Online
Paste your HTML, toggle options, and get a compressed version with comments and whitespace removed. Preserves content inside pre, code, and script tags.
What Is an HTML Minifier?
An HTML minifier compresses HTML code by removing unnecessary characters — comments, extra whitespace, and line breaks — without changing how the page renders. Smaller HTML files transfer faster over the network and improve Time to First Byte (TTFB). This tool preserves content inside <pre>, <code>, <textarea>, and <script> tags where whitespace matters. Everything runs in your browser.
How to Use the HTML Minifier
- Configure Options — Toggle comment removal, line break removal, and whitespace collapsing
- Paste HTML — Enter or paste your HTML in the left input panel
- Click Minify HTML — The compressed result appears in the right panel
- Check Size Stats — See original size, minified size, and percentage saved
- Copy Result — Click Copy Result to copy the minified HTML
Why Use This HTML Minifier?
- Configurable — Choose which optimizations to apply with toggle options
- Safe Preservation — Content inside pre, code, textarea, and script tags is untouched
- Faster Page Loads — Smaller HTML means less data to download and parse
- Comment Removal — Strips all <!-- ... --> HTML comments from production code
- Size Comparison — Instantly see byte savings and compression percentage
- Privacy First — Your HTML never leaves your browser. Zero server processing
FreeToolbox vs Other HTML Minifiers
| Feature | FreeToolbox | html-minifier (npm) | htmlcompressor.com |
|---|---|---|---|
| Browser-based | Yes | Node.js | Server-side |
| No install needed | Yes | npm install | Yes |
| Configurable options | 3 toggles | Many options | Limited |
| Preserves pre/code | Yes | Yes | Yes |
| Size comparison | Yes | CLI output | Yes |
| No ads | Yes | N/A | No |
| Dark theme | Yes | N/A | No |
FAQ
Does HTML minification break my page layout?
No. Removing comments and collapsing whitespace between tags does not affect how browsers render your page. Content inside pre, code, textarea, and script elements is preserved to prevent any display issues.
How much space does HTML minification save?
Typically 10-30% depending on how much whitespace and comments the original HTML contains. Pages with lots of indentation and comments see the biggest savings.
Are inline CSS and JavaScript affected?
Content inside script tags is preserved as-is. If you want to minify embedded CSS or JS, use the dedicated CSS Minifier or JS Minifier tools.
Does this handle HTML entities?
Yes. HTML entities like &, <, and > are preserved unchanged. The tool only removes whitespace and comments, not content.
Is my HTML uploaded to a server?
No. All processing happens locally in your browser. Your HTML code is never transmitted anywhere.