imagemin

Minify images seamlessly

Install

$ npm install --save imagemin

Usage

var Imagemin = require('imagemin');

new Imagemin()
    .src('images/*.{gif,jpg,png,svg}')
    .dest('build/images')
    .use(Imagemin.jpegtran({progressive: true}));
    .run(function (err, files) {
        console.log(files[0]);
        // => {path: 'build/images/foo.jpg', contents: <Buffer 89 50 4e ...>}
    });

You can use gulp-rename to rename your files:

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

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

API

new Imagemin()

Creates a new Imagemin instance.

.src(file)

Type: array, buffer or 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(callback)

Type: function

Optimize your files with the given settings.

callback(err, files)

The callback will return an array of vinyl files in files.

Plugins

The following plugins are bundled with imagemin:

• gifsicle — Compress GIF images.
• jpegtran — Compress JPG images.
• optipng — Compress PNG images losslessly.
• svgo — Compress SVG images.

.gifsicle(options)

Compress GIF images.

var Imagemin = require('imagemin');

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

.jpegtran(options)

Compress JPG images.

var Imagemin = require('imagemin');

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

.optipng(options)

Lossless compression of PNG images.

var Imagemin = require('imagemin');

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

.svgo(options)

Compress SVG images.

var Imagemin = require('imagemin');

new Imagemin()
    .use(Imagemin.svgo());

CLI

$ npm install --global imagemin

$ imagemin --help

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

  Example
    $ imagemin images/* build
    $ 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>    Optimization level between 0 and 7
    -p, --progressive                   Lossless conversion to progressive

Related

• imagemin-app
• gulp-imagemin
• grunt-contrib-imagemin

License

MIT © imagemin