[Steven Zahm]

@ Mike

Slim Plus will automatically create images from the source image that are
100px x 120px. So if you upload a pre-cropped image using the same ratio (5:6) that would work too. For example, images with the dimension of 200px x 240px or 110px x 132px. Here’s the math…

( width / height ) * new-height = new-width

OR

( height / width ) * new-width = new-height

Hope that helps!