✂️ CSS Optimization
Remove Unused CSS Tool
Clean bloated stylesheets. Paste your HTML and CSS to scan for dead style declarations and download optimized results.
📄 Paste HTML Content
🎨 Paste CSS Stylesheet
📂 Cleaned Stylesheet Output
🔧 Optimization Options
Combines duplicate selectors into single blocks.
📊 Optimization Report
Size Reduction
0%
0 Bytes Saved
Total CSS Rules:
0
Unused Rules:
0
Optimization Score:
100/100
🎉 Stylesheet optimized successfully!
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FAQs
Frequently Asked Questions
Everything you need to know about the Unused CSS optimization engine.
It parses all classes, tag names, and element IDs out of the HTML string, and filters the CSS style blocks, preserving only those whose selectors exist in the HTML layout.
Yes. The scan only targets CSS style selectors. However, dynamic Javascript classes injected at runtime should be checked, as the static markup parser might not view them.
Yes. Ticking 'Detect Duplicate Rules' combines multiple stylesheet entries of the same selector into unified blocks.
No. The optimization is computed client-side in the browser sandboxed thread. Code scripts stay fully private.
Yes. Ticking optimization cleans unused Tailwind utility variables and reduces CSS sizes.
Yes. It inspects classes inside `@media` boundaries, keeping rules that match active selectors.
Decreasing CSS file weight speeds up initial rendering, reducing First Contentful Paint (FCP) and blocking parameters.
Unused blocks are completely removed, and comments within preserved styling blocks stay intact.
The parser easily formats sheets up to 20MB directly in the local sandbox.
Yes, this tool is free of charge and requires no user registration.