grunt-smushit

Grunt plugin to remove unnecessary bytes of PNG and JPG using Yahoo Smushit

Smush.it uses optimization techniques specific to image format to remove unnecessary bytes from image files. It is a "lossless" tool, which means it optimizes the images without changing their look or visual quality.

Read more about Smush.it

Getting Started

This plugin requires Grunt ~0.4.1

If you haven't used Grunt before, be sure to check out the Getting Started guide, as it explains how to create a Gruntfile as well as install and use Grunt plugins. Once you're familiar with that process, you may install this plugin with this command:

npm install grunt-smushit --save-dev

Once the plugin has been installed, it may be enabled inside your Gruntfile with this line of JavaScript:

grunt.loadNpmTasks('grunt-smushit');

The "smushit" task

Overview

In your project's Gruntfile, add a section named smushit to the data object passed into grunt.initConfig().

grunt.initConfig({
  smushit: {
    mygroup: {
      src: ['tests/img/**/*.png','tests/img/**/*.jpg'],
      dest: 'tests/img/min'
    }
  }
});

Options

options.service

Type: String Default value: null

Call another service instead of Yahoo Smushit

Usage Examples

Output Folder

Move your files to a target folder (should not be into the same).

grunt.initConfig({
  smushit: {

    // catch all files from a single folder
    group1: {
      src: 'tests/img',
      dest: 'tests/opt_img'
    },

    // filter by filetype
    group2: {
      src: ['tests/img/**/*.png','tests/img/**/*.jpg'],
      dest: 'tests/img/min'
    },

    // set each file
    group3:{
        src: ['tests/img/logo.png','tests/img/whatever.png'],
        dest: 'tests/img/min'
    }

  }
});

Replace files

Be safe to replace all of your old files with this option.

grunt.initConfig({
  smushit: {

    // a single directory
    group1: {
      src: 'tests/img'
    },

    // filter by filetype
    group2: {
      src: ['tests/img/**/*.png','tests/img/**/*.jpg']
    },

    //replace recursive
    group3: {
      src: ['tests/img/logo.png','tests/img/tellme.jpg']
    }

  }
});

Work with a nested folder

Recursively walk into folders and smushit files

grunt.initConfig({
  smushit: {

    // catch all files from a nested folder
    group1: {
      src: 'tests/nested/img',
      dest: 'tests/opt_img'
    },

    // filter files in a nested folder by filetype
    group2: {
      src: ['tests/nested/img/**/*.png','tests/nested/img/**/*.jpg'],
      dest: 'tests/opt_img'
    },

    // retrieve files in a nested folder by file name
    group3: {
      src: ['tests/nested/img/**/southpark.png','tests/nested/img/**/southpark.jpg'],
      dest: 'tests/opt_img'
    },
  }
});

Provide multiple source

Smushit one folder, or many of them

grunt.initConfig({
  smushit: {

    // catch all files from a nested folder
    group1: {
      src: ['tests/img1', 'tests/img2'],
      dest: 'tests/opt_img'
    },

    // filter files in a folder by filetype
    group2: {
      src: ['tests/img1/**/*.png','tests/img2/**/*.jpg'],
      dest: 'tests/opt_img'
    },

    // retrieve files in a folder by file name
    group3: {
      src: ['tests/img1/**/southpark.png','tests/img2/**/southpark.jpg'],
      dest: 'tests/opt_img'
    },
  }
});

Use of cwd

Provide your base directory

grunt.initConfig({
  smushit: {

    // src folder is 'tests/img' and dest is 'tests/opt_img'
    group1: {
      cwd: 'tests'
      expand: true,
      src: 'img',
      dest: 'opt_img'
    },

    // multiple src folders: src folder is ['tests/img1', 'tests/img2'] and dest is 'tests/img/min'
    group2: {
      cwd: 'tests'
      expand: true,
      src: ['img1/**/*.png','img2/**/*.jpg'],
      dest: 'img/min'
    },
  }
});

Your own service

There is an option that you can set your own image optimizer service. Its a good alternative if you don't want to wait for smush.it web service latency.

grunt.initConfig({
  smushit: {
    options: {
      service: 'http://myimgopt.com/exec'
    },
    mygroup: {
      src: ['tests/img/**/*.png','tests/img/**/*.jpg'],
      dest: 'tests/img/min'
    }
  }
});

Contributing

$ git clone git://github.com/heldr/grunt-smushit.git
$ cd grunt-smushit
$ npm install
$ npm test

NOTE: Be sure to keep up to date the plugin tests and jshint code quality.

Release History

• 2013-07-15   v1.1.0   Support nested folder structure, support for multiple source folders
• 2013-07-15   v1.1.0   Enable the use of cwd parameter
• 2013-06-16   v1.0.0   Rewrite task on top of grunt-init-gruntplugin
• 2013-05-26   v0.4.2   Add support to different service #16

Credits

• node-smushit

License

MIT License (c) Helder Santana