Featured Image Setting
Location of the featured image settings are at the customize page (Dashboard – > Appearance – > Customize).
Basically you can display different featured image for each different article. Jempol theme requires an featured image for design perfection, then you can upload an image as the default featured image which the featured image will be displayed as featured images if you do not use the manual settings on each article.
The recommended image size is 300×200 pixels or 3:2 ratio. This ratio is widely used as the ratio of the size of the photography.
In featured image settins section you can also select the type of animation when the mouse pointer hovers over the image.