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🧼 Unused CSS Cleaner

Automatically remove unused CSS based on your HTML.

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This tool helps you quickly remove unused CSS rules from your stylesheets. Upload an HTML file and corresponding CSS files to instantly receive a cleaned version.

Upload HTML + CSS Files



Remove Unused CSS – Optimize Your Website Efficiently


Removing unused CSS is an essential step to improve your website’s performance. This tool is specifically designed for developers, designers, and site owners who want to clean their CSS files of redundant styles. By analyzing your HTML file together with multiple CSS files, the tool detects which CSS rules are actually used – and automatically removes the rest.



How Does It Work?


The tool is easy to use. You can upload one HTML file along with multiple CSS files. The system then scans the HTML file and compares it with the styles defined in the CSS files. Only the CSS rules that are actually used on the HTML page are kept. The unused styles are automatically removed.

The result is a single, clean, and optimized CSS output that you can use in your project right away. This helps reduce file size, shortens website load time, and contributes to a better user experience and search engine optimization.



Why Remove Unused CSS?


  • Speed: A smaller CSS file means faster load times.
  • SEO: Search engines prefer fast, optimized websites.
  • Clarity: Your project stays cleaner and more manageable.
  • Maintenance: Less code is easier to maintain.
  • Compatibility: Remove old, unused styles that might cause issues.


Step-by-Step Guide


  1. Select or drag one HTML file into the upload field.
  2. Select one or more CSS files you want to clean.
  3. Click the Analyze button.
  4. Our tool compares the HTML structure with the CSS selectors.
  5. After a short analysis, an optimized CSS file is generated.
  6. Download the final result and implement it in your website.


What Technology Powers This?


This tool uses modern web parsing techniques combined with CSS selector matching. Every CSS rule is checked against the HTML file. If a selector isn’t found anywhere, it’s marked as unused and removed from the final output. This ensures that no unnecessary rules remain in your stylesheet.

Our engine processes the HTML DOM and compares it with all combinations of CSS selectors, including complex nested structures like combinators, pseudo-classes, and media queries. This results in a thorough and reliable cleanup.



Start Cleaning


Ready to clean up your project? Upload your HTML and CSS files and let the tool do the work automatically. Within seconds, you’ll have a more efficient, faster, and cleaner website. No more manually sifting through styles – our tool does it for you!

User-friendly, powerful, and effective – that’s what this unused CSS cleaner stands for.