Traditionally eBooks (Electronic Books) are text presented in a format which allows it to be read on a computer or handheld device like a kindle or iPad (with specialised apps). The text is designed to flow automatically based on the size of text selected by the reader. Because of this ability images in eBooks do not work well in this form.
Although not technically eBooks, in order to display more decorative or image heavy eBooks .pdf files are more suitable. Pdf eBooks make great gifts & lead generation tools. They can include hyperlinks, images, videos, audio, fillable areas & of course text and can be read on any digital device.