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CSS Minifier

Compress CSS code to reduce file size and improve performance

code CSS Minifier

Paste your CSS code here for minification

Characters: 0

Sample CSS Templates:

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About CSS Minification:

CSS minification removes unnecessary characters from source code without changing functionality. This includes whitespace, comments, and optimizes various CSS properties for smaller file sizes.

help_outline Understanding CSS Minification

What Gets Minified?

  • remove CSS comments and whitespace
  • palette Color optimizations (rgb → hex, shortened hex)
  • straighten Unit removal from zero values (0px → 0)
  • text_format Font-weight optimization (normal → 400)

Performance Impact

speed 20-60% reduction in file size
download Faster download times
trending_up Better Google PageSpeed scores
phone_android Improved mobile performance

Best Practices

Build Pipeline

Integrate minification into your build process

Source Maps

Generate source maps for debugging minified code

Critical CSS

Inline critical CSS, minify the rest

tips_and_updates

Advanced Tips:

  • • Use CSS preprocessor optimization
  • • Remove unused CSS rules
  • • Combine CSS files when possible
  • • Enable Brotli or GZIP compression

compare Before and After Example

Before (Original):

/* Container styles */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px 15px;
}

/* Header styles */
.header {
    background-color: #333333;
    color: #ffffff;
    padding: 1rem 0px;
    text-align: center;
}

.button {
    background-color: #007bff;
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
}

After (Minified):

.container{max-width:1200px;margin:0 auto;padding:20px 15px}.header{background:#333;color:#fff;padding:1rem 0;text-align:center}.button{background:#007bff;color:#fff;padding:10px 20px;border:0;border-radius:4px}