Optimize PNG, JPEG, GIF, SVG images with gulp task.
Install
$ npm install --save-dev gulp-image
External Dendencies
-
brew install libjpeg libpng
on macOS -
apt-get install -y libjpeg libpng
on Ubuntu -
npm install -g windows-build-tools
on Windows
Usage
This is an example of gulpfile.js
.
import gulp from 'gulp';
import image from 'gulp-image';
gulp.task('image', function () {
gulp.src('./fixtures/*')
.pipe(image())
.pipe(gulp.dest('./dest'));
});
gulp.task('default', ['image']);
You can pass an object to image()
as argument such as following:
gulp.task('image', () => {
gulp.src('./fixtures/*')
.pipe(image({
pngquant: true,
optipng: false,
zopflipng: true,
jpegRecompress: false,
mozjpeg: true,
gifsicle: true,
svgo: true,
concurrent: 10,
quiet: true // defaults to false
}))
.pipe(gulp.dest('./dest'));
});
Set false
for optimizers which you don't want to apply. And you can set concurrent
option to limit the max concurrency in execution. You can also set quiet
to avoid logging out results for every image processed.
You can configure parameters applied to each optimizers such as following:
gulp.task('image', () => {
gulp.src('./fixtures/*')
.pipe(image({
optipng: ['-i 1', '-strip all', '-fix', '-o7', '-force'],
pngquant: ['--speed=1', '--force', 256],
zopflipng: ['-y', '--lossy_8bit', '--lossy_transparent'],
jpegRecompress: ['--strip', '--quality', 'medium', '--min', 40, '--max', 80],
mozjpeg: ['-optimize', '-progressive'],
gifsicle: ['--optimize'],
svgo: ['--enable', 'cleanupIDs', '--disable', 'convertColors']
}))
.pipe(gulp.dest('./dest'));
});