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imagemin

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    imagemin

Minify images


Version published
Weekly downloads
934K
increased by1.76%
Maintainers
2
Install size
13.0 MB
Created
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Package description

What is imagemin?

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.

What are imagemin's main functionalities?

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);
})();

Other packages similar to imagemin

Readme

Source

imagemin Build Status Build status

Minify images seamlessly

Install

$ npm install --save imagemin

Usage

var Imagemin = require('imagemin');

var imagemin = new Imagemin()
	.src('images/*.{gif,jpg,png,svg}')
	.dest('build/images')
	.use(Imagemin.jpegtran({ progressive: true }));

imagemin.run(function (err, files) {
	if (err) {
		throw err;
	}
	
	console.log(files[0]);
	// => { contents: <Buffer 89 50 4e ...> }
});

You can use gulp-rename to rename your files:

var Imagemin = require('imagemin');
var rename = require('gulp-rename');

var imagemin = new Imagemin()
	.src('images/foo.png')
	.use(rename('bar.png'));

API

new Imagemin()

Creates a new Imagemin instance.

.src(file)

Type: Array|Buffer|String

Set the files to be optimized. Takes a buffer, glob string or an array of glob strings as argument.

.dest(folder)

Type: String

Set the destination folder to where your files will be written. If you don't set any destination no files will be written.

.use(plugin)

Type: Function

Add a plugin to the middleware stack.

.run(cb)

Type: Function

Optimize your files with the given settings.

cb(err, files, stream)

The callback will return an array of vinyl files in files and a Readable/Writable stream in stream.

Plugins

The following plugins are bundled with imagemin:

  • gifsicle — Compress GIF images.
  • jpegtran — Compress JPG images.
  • optipng — Lossless compression of PNG images.
  • pngquant — Lossy compression of PNG images.
  • svgo — Compress SVG images.

.gifsicle()

Compress GIF images.

var Imagemin = require('imagemin');

var imagemin = new Imagemin()
	.use(Imagemin.gifsicle({ interlaced: true }));

.jpegtran()

Compress JPG images.

var Imagemin = require('imagemin');

var imagemin = new Imagemin()
	.use(Imagemin.jpegtran({ progressive: true }));

.optipng()

Lossless compression of PNG images.

var Imagemin = require('imagemin');

var imagemin = new Imagemin()
	.use(Imagemin.optipng({ optimizationLevel: 3 }));

.pngquant()

Lossy compression of PNG images.

var Imagemin = require('imagemin');

var imagemin = new Imagemin()
	.use(Imagemin.pngquant());

.svgo()

Compress SVG images.

var Imagemin = require('imagemin');

var imagemin = new Imagemin()
	.use(Imagemin.svgo());

CLI

$ npm install --global imagemin
$ imagemin --help

Usage
  imagemin <file> <directory>
  imagemin <file> > <output>
  cat <file> | imagemin > <output>

Example
  imagemin images/* build
  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

License

MIT © imagemin

Keywords

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Last updated on 20 Oct 2014

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