imagemin
Advanced tools
Package description
The imagemin npm package is a powerful tool for image compression and optimization. It allows developers to reduce the size of images without losing quality, which can significantly improve the performance of web applications by reducing load times.
Basic Image Compression
This code demonstrates how to use imagemin to compress JPEG and PNG images. The images are taken from the 'images' directory and the compressed versions are saved in the 'build/images' directory. The quality of JPEG images is set to 75, and the quality of PNG images is set between 60% and 80%.
const imagemin = require('imagemin');
const imageminMozjpeg = require('imagemin-mozjpeg');
const imageminPngquant = require('imagemin-pngquant');
(async () => {
const files = await imagemin(['images/*.{jpg,png}'], {
destination: 'build/images',
plugins: [
imageminMozjpeg({quality: 75}),
imageminPngquant({quality: [0.6, 0.8]})
]
});
console.log(files);
})();GIF Optimization
This code demonstrates how to optimize GIF images using imagemin. The GIF images are taken from the 'images' directory and the optimized versions are saved in the 'build/images' directory. The optimization level is set to 3, which is the highest level of optimization.
const imagemin = require('imagemin');
const imageminGifsicle = require('imagemin-gifsicle');
(async () => {
const files = await imagemin(['images/*.gif'], {
destination: 'build/images',
plugins: [
imageminGifsicle({optimizationLevel: 3})
]
});
console.log(files);
})();SVG Optimization
This code demonstrates how to optimize SVG images using imagemin. The SVG images are taken from the 'images' directory and the optimized versions are saved in the 'build/images' directory. The SVGO plugin is configured to keep the viewBox attribute and not to remove IDs.
const imagemin = require('imagemin');
const imageminSvgo = require('imagemin-svgo');
(async () => {
const files = await imagemin(['images/*.svg'], {
destination: 'build/images',
plugins: [
imageminSvgo({
plugins: [
{removeViewBox: false},
{cleanupIDs: false}
]
})
]
});
console.log(files);
})();Sharp is a high-performance image processing library that supports various image formats. It is known for its speed and efficiency, making it a popular choice for image resizing, cropping, and format conversion. Unlike imagemin, which focuses on compression and optimization, sharp provides a broader range of image manipulation functionalities.
Jimp is a pure JavaScript image processing library that does not require any external dependencies. It supports a wide range of image manipulation features, including resizing, cropping, and color adjustments. While imagemin is primarily used for image compression, Jimp offers a more comprehensive set of image editing tools.
Image-webpack-loader is a loader for webpack that optimizes images during the build process. It uses imagemin under the hood but integrates seamlessly with webpack, making it a convenient choice for developers who are already using webpack for their build process. It provides similar functionalities to imagemin but is designed to work specifically within the webpack ecosystem.
Readme
Minify images seamlessly with Node.js
$ npm install --save imagemin
var Imagemin = require('imagemin');
var imagemin = new Imagemin()
.src('foo.jpg')
.dest('foo-optimized.jpg')
.use(Imagemin.jpegtran({ progressive: true }));
imagemin.optimize(function (err, file) {
console.log(file);
// => { contents: <Buffer 89 50 4e ...>, mode: '0644' }
});
Creates a new Imagemin instance.
Add a plugin to the middleware stack.
Set the file to be optimized. Can be a Buffer or the path to a file.
Set the destination to where your file will be written. If you don't set any destination the file won't be written.
Optimize your file with the given settings.
The following plugins are bundled with imagemin:
Compress GIF images.
var Imagemin = require('imagemin');
var imagemin = new Imagemin()
.use(Imagemin.gifsicle({ interlaced: true }));
Compress JPG images.
var Imagemin = require('imagemin');
var imagemin = new Imagemin()
.use(Imagemin.jpegtran({ progressive: true }));
Lossless compression of PNG images.
var Imagemin = require('imagemin');
var imagemin = new Imagemin()
.use(Imagemin.optipng({ optimizationLevel: 3 }));
Lossy compression of PNG images.
var Imagemin = require('imagemin');
var imagemin = new Imagemin()
.use(Imagemin.pngquant());
Compress SVG images.
var Imagemin = require('imagemin');
var imagemin = new Imagemin()
.use(Imagemin.svgo());
$ npm install --global imagemin
$ imagemin --help
Usage
$ imagemin <file> > <output>
$ cat <file> | imagemin > <output>
Example
$ imagemin foo.png > foo-optimized.png
$ cat foo.png | imagemin > foo-optimized.png
Options
-i, --interlaced Interlace gif for progressive rendering
-o, --optimizationLevel <number> Select an optimization level between 0 and 7
-p, --progressive Lossless conversion to progressive
MIT © Kevin Mårtensson
FAQs
Minify images seamlessly
The npm package imagemin receives a total of 890,124 weekly downloads. As such, imagemin popularity was classified as popular.
We found that imagemin demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 6 open source maintainers collaborating on the project.
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