Select the proper crop image tags. The image crop tags determine which sizes and dimensions are required and will automatically resize and crop the image for each crop tag. You always have the option to reposition/resize the crops if you’re not satisfied with the automatic placements. NOTE: Generally every image should have at least the Story image crop tag selected.
Adjust the positioning and size of the automatic crops as desired using the drag-and-drop interface. The area within the highlighted box indicates the area you'd like to select for the final crop. Actual size of the image will be determined based on where it is being presented; the box reflects the ratio and will be automatically resized for presentation on the website.