Images in Qlik Sense need to be loaded into the content library first then can be accessed via objects that allow the setting of an image i.e text object.
If you want more objects that support the use of images then QLik branch contains a number of examples. I used kf cards and country flags to list countries that met a measure condition.
at the movement we don't have this feature in default chart. but u can achieve by using below simple table extension from qlik branch portal
below thread i have shared the mock working app