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ncss NPM version [not maintained]

This node.js module is a streaming compressor for CSS. Unlike other CSS minifiers it works on a stream and is optimized for speed.


npm install ncss


var ncss = require('ncss');
var min = ncss('.selector { background: black; }');


ncss < input_file > output_file

Using ncss with Connect or Express

ncss also comes with middleware for connect. See examples for more advanced usage.

var pub = __dirname + '/public';
connect.createServer(ncss.middleware(pub), connect.static(pub)).listen(3000);

Matching Output of Y!UI Compressor

For Y!UI Compressor 2.4.2, use: --keep-trailing-semicolons --no-collapse-zeroes --no-collapse-none