What are the recommended dimensions for a D2L course banner image? March 21, 2019 Posted in Frequently Asked QuestionsTagged banner, course image, d2l, homepage The recommended dimensions for a D2L course banner image are 1150 x 200 pixels. Share this:Click to email a link to a friend (Opens in new window)Click to print (Opens in new window)Click to share on Pocket (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)