This Unused CSS Remover tool allows you to clean unused CSS code for free. This CSS cleaner helps optimize your website's CSS for better performance.
Unused CSS Remover Tool
Improve your website's performance by removing unnecessary CSS rules. This free online tool scans your HTML and CSS code, identifies unused selectors, and generates a clean version of your stylesheet with only what's needed.
How It Works
- Paste your HTML in the "HTML Input" section.
- Paste your CSS in the "CSS Input" section.
- Click the "Clean CSS" button to process.
- Review the cleaned CSS and the list of removed selectors.
- Copy or download the optimized CSS.
Key Features
- Removes all unused CSS selectors based on provided HTML.
- Displays removed selectors for review and debugging.
- Shows a summary of the reduction in CSS size.
- Supports multiple selectors, nested rules, and media queries.
- Clean UI with support for light and dark modes.
Why Use This Tool?
- Speed: Reducing CSS bloat improves page load time.
- SEO: Cleaner code contributes to better performance scores.
- Maintainability: Smaller CSS files are easier to maintain.
- Free & Secure: Your code never leaves your browser.
Example Use Case
Suppose your HTML uses only a few classes, but your CSS file includes dozens of selectors from templates or frameworks. This tool identifies the ones you actually use and removes the rest, producing a leaner CSS output in seconds.
Tips for Best Results
- Paste a complete section of your page's HTML to ensure accurate results.
- This tool works best with static HTML — it may not detect dynamic content from JavaScript.
- Review the removed selectors list to ensure no critical styles are excluded.
Credits
Developed by Alpha arp. This tool is part of our ongoing effort to create faster, cleaner, and more efficient web experiences.
Disclaimer
This tool performs a basic match of selectors found in the CSS with the HTML structure provided. It does not parse dynamic behavior or pseudo-classes. Always review the cleaned CSS before using it in production.
What is the Unused CSS Remover Tool?
It is a free online tool that scans your HTML and CSS to remove unused CSS selectors and generate a clean, optimized stylesheet.
How does this tool identify unused CSS?
The tool compares selectors in your CSS against elements used in your HTML. Any selectors not found in the HTML are considered unused and removed.
Is my data safe while using this tool?
Yes, your code is processed entirely in your browser. No data is sent or stored on any server.
Does it support media queries and nested selectors?
Yes, the tool supports media queries, grouped selectors, and basic nesting. However, advanced CSS-in-JS or dynamic selectors may not be fully handled.
Can I use the cleaned CSS directly on my website?
Yes, but it's recommended to review the output to ensure no critical styles were removed, especially if your HTML is dynamic.
Does this tool work with dynamic frameworks like React or Vue?
Not fully. Since it analyzes static HTML, it may not detect styles applied via JavaScript frameworks. For best results, use a rendered version of your page.
