When you're seeking a solution to consistently sized images for your Drupal site, you'll eventually end up finding your way to ImageCache. Acquia Drupal includes the module as part of its default install, which speaks to the utility of this powerful module.
The problem, however, is getting your head around how it works and integrating it into your site. In this video, I showcase the start of my own implementation of using ImageCache. This means I cover, from start to finish, the setup and integration of ImageCache and its supporting modules.
There are many more things you can do with ImageCache and it's the "go to" module for making your social media site look like all the others. If you don't want to be stuck with a "One [image] size fits all" then look no further than ImageCache!
Video Note: In this ImageCache tutorial I mention the ImageCache module is performing the actions listed with the module. In actuality, the image actions are performed by ImageAPI and it's ImageCache which manages the variations - just a minor technical note which doesn't impact the video's content, but worth knowing.