gulp-imagemin 
Minify PNG, JPEG and GIF images with image-min
Issues with the output should be reported on the image-min issue tracker.
Install
Install with npm
npm install --save-dev gulp-imagemin
Example
var gulp = require('gulp');
var imagemin = require('gulp-imagemin');
gulp.task('default', function () {
gulp.src('src/image.png')
.pipe(imagemin())
.pipe(gulp.dest('dist'));
});
API
imagemin(options)
See the image-min options.
License
MIT © Sindre Sorhus