ImageOptimizer

This gem allows you to simply optimize images via jpegoptim or OptiPNG.

Tested against ruby 1.8.7, 1.9.2, 1.9.3, 2.0.0, 2.1.0, ruby-head, jruby-18mode, jruby-19mode, jruby-head, rbx-2.1.0, rbx-2.2.0, and ree

Build Status Dependency Status Code Climate Coverage Status Gem Version

Installation

This gem uses the following utilities for optimizing images:

  1. jpegoptim, which can be installed from freecode.com

  2. OptiPNG, which can be installed from sourceforge.net

Or install the utilities via homebrew: 

$ brew install optipng jpegoptim

Then add this line to your application's Gemfile:

gem 'image_optimizer'

And then execute:

$ bundle

Or install it yourself as:

$ gem install image_optimizer

Usage

Optimize PNG or GIF formats:

OptiPNG is a PNG optimizer that recompresses image files to a smaller size without losing any information and performs PNG integrity checks and corrections.

ImageOptimizer.new('path/to/file.png').optimize

Optimize JPEG formats:

jpegoptim provides lossless optimization for JPEG files based on optimizing the Huffman tables. All jpegs will be progressively optimized for a better web experience

ImageOptimizer.new('path/to/file.jpg').optimize

Optimization Options

Quiet optimization

To have optimization performed in quiet mode without logging progress, an optional quiet parameter may be passed. Default is false.

ImageOptimizer.new('path/to/file.jpg', quiet: true).optimize
Lossy JPEG optimization

Pass an optional quality parameter to target a specific lossy JPG quality level (0-100), default is lossless optimization. PNGs will ignore the quality setting.

ImageOptimizer.new('path/to/file.jpg', quality: 80).optimize

Contributing

  1. Fork it
  2. Create your feature branch (git checkout -b my-new-feature)
  3. Commit your changes (git commit -am 'Add some feature')
  4. Push to the branch (git push origin my-new-feature)
  5. Create new Pull Request