Imagery can be a bit of a late consideration in our design process. We may have ideas of imagery as we work through the other design steps, however it is extremely important to factor in the right images to go with our content.
There are numerous image options available, photos, illustrations, charts and icons to name a few ways that imagery can be used.
Be sure that the image is being used constructively and not just to fill in some space.
Consider the purpose of the image and ensure the image fits the purpose.
Here is an “oldie but a goodie” article about using Infographics in eLearning
From the eLearning coach, a resource about the use of Icons in eLearning
This resource has a good summary on the different file types to consider when using images
There are some great practical tips in this article such as file size considerations and position of the images on the screen.