HTML Minifier
Note: This minifier uses aggressive optimization to reduce file size. Always test minified HTML thoroughly before deploying to production. Some minification options (like removing optional tags) may not work correctly with all frameworks or older browsers.
About HTML Minifier
HTML minification is the process of removing unnecessary characters from HTML code without changing its functionality. This includes removing whitespace, comments, and optional closing tags. Minifying HTML reduces file size, which leads to faster page load times and reduced bandwidth usage. This tool provides several minification options: collapse whitespace (removes extra spaces and line breaks), remove comments (strips HTML comments), remove optional tags (removes closing tags that browsers can infer), and remove empty attributes. All minification happens in your browser for complete privacy.
How to Use
- Paste or type your HTML into the input field.
- Select the minification options you want to apply.
- The tool will automatically minify your HTML after a brief pause.
- View the size reduction statistics showing original size, minified size, and savings.
- Click "Copy" to copy the minified HTML to your clipboard.
- Test the minified HTML thoroughly before using in production.
Frequently Asked Questions
What is HTML minification?
HTML minification is the process of removing unnecessary characters (whitespace, comments, optional tags) from HTML code without changing how browsers interpret it. This reduces file size, leading to faster download times and improved page load performance.
What does "collapse whitespace" do?
This option removes extra spaces, tabs, and line breaks from your HTML. Multiple spaces are collapsed into single spaces, whitespace between tags is removed, and the entire document is trimmed. This typically provides the most significant size reduction.
Is it safe to remove HTML comments?
Generally yes, but be careful. HTML comments are not visible to users and removing them reduces file size. However, some developers use conditional comments for IE compatibility, or comments for debugging. Make sure to keep any comments that serve a functional purpose.
What are optional tags?
HTML allows certain closing tags to be omitted (like </p>, </li>, </body>, </html>) because browsers can infer them. Removing these reduces file size but may break styling in some CSS frameworks or older browsers. Test thoroughly if you enable this option.
Will minification break my HTML?
Generally no, but there are edge cases. Whitespace inside <pre>, <textarea>, and <script> tags is significant and should be preserved. This tool is safe for most HTML, but always test your minified code. Some JavaScript-heavy applications may have issues with aggressive minification.
How much size reduction can I expect?
Size reduction varies based on your HTML and options selected. Typical reductions range from 10-30%. HTML with lots of indentation, comments, and whitespace will see larger reductions. The statistics panel shows exact savings for your specific HTML.
Should I minify HTML for production?
Yes! Minifying HTML is a best practice for production websites. It reduces bandwidth usage, improves page load times, and provides a better user experience. However, keep unminified versions for development and debugging. Many build tools can automate this process.
Is my data secure?
Yes! All HTML minification happens entirely in your browser using JavaScript. Your HTML is never sent to any server, ensuring complete privacy. The tool works offline once loaded.