Awesome

gulp-cssshrink

Shrinks CSS files using cssshrink

Note: It seems like cssshrink is dead (no commits since 2014-07-07 and 20 open issues). You should probably use something like cssnano instead

Install

npm install gulp-cssshrink --save-dev

Usage

var gulp = require('gulp');
var cssshrink = require('gulp-cssshrink');

gulp.task('default', function() {
    gulp.src('css/**/*.css')
        .pipe(cssshrink())
        .pipe(gulp.dest('dist/css/'));
});