In this lesson, we are going to talk about an exciting and important topic called RubyGems. Gems are modules and classes that provide a ton of functionality, so they may even seem like magic. Essentially, these gems are nothing but Ruby code files that perform a certain task for you.

In this lesson, I'm going to show you where to go and find the Ruby gems you want. The main repository for Ruby gems is rubygems.org.

In this Ruby Programming Tutorial, we are gonna walk through how we can optimize the size of our image files using a RubyGem. We're going to be diving into how to use the image optimizer gem.