HTML Minifier
Remove unnecessary whitespace, line breaks, and comments from HTML code. Supports real-time minification with compression rate display.
HTML Minifier
What is HTML Minifier?
HTML Minifier is a tool that reduces file size by removing unnecessary whitespace, line breaks, and comments from HTML code. Minified HTML renders the same while having a smaller file size, which improves web page loading speed.
Key Features
- Comment Removal – Removes all HTML comments (preserves conditional comments)
- Whitespace Optimization – Removes unnecessary spaces and line breaks between tags
- Safe Compression – Preserves content within pre, code, textarea, script, and style tags
- Real-time Minification – Automatically shows minified results as you type
- Compression Rate Display – Shows percentage of size reduction compared to original
- Download – Save minified code as a .min.html file
How to Use
- Paste your HTML code in the left input area
- Minification starts automatically when code is entered
- View the minified result and compression rate on the right
- Click copy to clipboard or download as a file
Tip: Click the ‘Sample’ button to test the functionality with sample code.
Why Minify HTML?
1. Improved Page Loading Speed
Smaller file size reduces download time, resulting in faster First Contentful Paint.
2. Bandwidth Savings
Less data transferred from server means reduced hosting costs.
3. SEO Improvement
Google uses Core Web Vitals as a ranking factor. Faster pages can achieve higher rankings.
4. Better TTFB
Time To First Byte is reduced, allowing users to see content faster.
Preserved Regions
Content within the following tags is preserved as-is because formatting is important:
- <pre> – Preformatted text
- <code> – Code blocks
- <textarea> – Text input areas
- <script> – JavaScript code
- <style> – CSS styles
Important Notes
- This tool performs basic minification (whitespace/comment removal) only
- For advanced features like inline CSS/JS optimization, use specialized tools like html-minifier-terser
- Always keep a backup of your original code before minification
- Test that minified HTML renders correctly before deploying to production
Frequently Asked Questions
Will minification break my page?
No, minification only removes visually invisible whitespace and comments, so the rendering result is identical. However, HTML with syntax errors will have the same errors after minification.
How much compression can I expect?
It varies by code, but typically HTML with many comments and deep indentation sees 30-50% reduction, while already concise code sees 10-20% reduction.
Can I restore minified HTML to its original form?
Whitespace and line breaks can be restored using an HTML Beautifier tool, but removed comments cannot be recovered. Always keep the original code separately.
Are conditional comments also removed?
No, conditional comments for IE compatibility (e.g., <!–[if IE]>) are preserved. Only regular HTML comments are removed.