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npm npm

What is the min.css?

min.css is a tiny, ultrafast and efficient JavaScript library for minifying CSS files that really makes your website faster - Online service.

Installation

What are the requirements?

Any version of Node.js and nothing more. min.css is a JavaScript library and has not any dependencies. So it can be used anywhere, in any platform that JavaScript supports.

How to install min.css?

npm install -g min.css

Usage

How to use min.css via CLI?

min.css [input-file1] [input-file2] [input-fileN] > [output-file]

Also min.css accepts the following command line arguments:

-h, --help     output usage information
-v, --version  output the version number

For example, to minify a main.css, icons.css and theme.css files into style.min.css do:

min.css main.css icons.css theme.css > style.min.css

How to use min.css via Node.js?

var mincss = require('min.css');
var input = 'html, body {  }';
var output = mincss(input);

What min.css do?

  • Removes all comments
  • Removes all empty declarations
  • Removes all rules that was redeclared (excluding background, background-image).
  • Removes all whitespaces that are unnecessary (including around the meta characters, such as { } ( ) : ; > ~ + etc.)
  • Removes the last ";" in a rule declaration
  • Removes leading zero in float value. For example: 0.5 > .5
  • Convert RGB|RGBA-1 color to HEX and RGBA-0 to transparent
  • Convert HSL|HSLA-1 color to HEX and HSLA-0 to transparent
  • Convert HEX color to short value when it's possible. For example: #CCCCCC > #CCC
  • Removes for all zero values units (such as %,px,pt,pc,rem,em,ex,cm,mm,in) that are unnecessary (excluding CSS keyframes). For example: border: 1px 0px > border:1px 0
  • Reduces values for margin,padding,border-width,border-color,border-style. For example: 1px 2px 1px 2px => 1px 2px