sqwish

sqwish can compress only CSS files.

https://github.com/ded/sqwish

Usage

compressor.minify({
  compressor: 'sqwish',
  input: 'foo.css',
  output: 'bar.css',
  callback: function(err, min) {}
});

Options

compressor.minify({
  compressor: 'sqwish',
  input: 'foo.css',
  output: 'bar.css',
  options: {
    strict: true // strict optimizations
  },
  callback: function(err, min) {}
});