ImageMagick is a library that allows you to do all kinds of image manipulations. Rmagick is Ruby plugin for ImageMagick. In this episode we will learn to read, resize, crop images; overlay images above images; overlay text above images. Rmagick docs: https://github.com/rmagick/rmagick Episode source code: https://github.com/corsego/90-rmagick-ruby Blogpost: https://blog.corsego.com/rmagick-activestorage