Does this CSS minifier support CSS custom properties (variables)?

Yes. CSS variables (e.g. --primary-color: #6366f1) and modern CSS3 features (@media, @keyframes, CSS Grid) are fully preserved without syntax corruption.

Will CSS comments like /* @license */ be removed?

Standard comments are removed to maximize compression. Important license banners containing /*! ... */ can be preserved if needed.

Can I un-minify and reformat compressed CSS?

Yes. You can paste minified CSS into our online tools to re-indent and beautify rules with clean line breaks.

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CSS Minifier

Minify CSS stylesheets and snippets.

Instant Results100% Client-Side Privacy100% Free Utility

CSS Minifier & Formatter

Compress and minify CSS stylesheets to reduce file sizes, or beautify messy CSS code with clean indentation.

Colors (#ffffff → #fff), zero values, whitespace and trailing semicolons are always optimized safely.

Source CSS

1088 bytes

/* Modern Glassmorphic Theme Stylesheet */
:root {
  --primary-color: #8b5cf6;
  --secondary-color: #6366f1;
  --bg-dark: #080814;
  --glass-surface: rgba(255, 255, 255, 0.05);
  --glass-border: rgba(255, 255, 255, 0.12);
}

body {
  margin: 0px;
  padding: 0px;
  background-color: var(--bg-dark);
  color: #ffffff;
  font-family: system-ui, -apple-system, sans-serif;
  -webkit-font-smoothing: antialiased;
}

.hero-container {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 80vh;
  padding: 40px 20px;
}

.glass-card {
  background: var(--glass-surface);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-radius: 24px;
  padding: 32px;
  box-shadow: 0px 20px 40px rgba(0, 0, 0, 0.4);
  transition: transform 0.3s ease, border-color 0.3s ease;
}

.glass-card:hover {
  transform: translateY(-4px);
  border-color: rgba(139, 92, 246, 0.4);
}

@keyframes pulseGlow {
  0%, 100% {
    opacity: 0.6;
    transform: scale(1);
  }
  50% {
    opacity: 1;
    transform: scale(1.05);
  }
}

About CSS Minifier

Compress and minify CSS stylesheets by stripping unnecessary spaces, newlines, comments, redundant semicolons, and optimizing color codes for maximum stylesheet performance.

Why Choose Our CSS Minifier

Feature	Smart Toolverse	Others
Advanced Rules	Optimizes color codes (#ffffff to #fff), 0px units, and trailing semicolons	Whitespace-only stripping
CSS3 & Modern Syntax	Supports CSS variables, Grid, Flexbox, media queries & subgrid	Breaks on CSS custom properties
Detailed Savings	Real-time byte count and compression percentage stats	No metrics
Zero Server Upload	Processes all CSS styles locally in browser memory	Uploads CSS to third-party endpoints

Common Uses & Applications

Reduce CSS file size for faster First Contentful Paint (FCP), clean production stylesheets, eliminate render-blocking CSS delays, and prepare optimized inline styles.

Frequently Asked Questions

CSS is a render-blocking resource; browsers must download and parse all linked stylesheets before painting pixels. Smaller minified CSS files download faster, speeding up First Contentful Paint (FCP) and Largest Contentful Paint (LCP).