1. Resource item primary image

The optimal aspect ratio for resource card images is 3:1

On ungated detail page headings, the central half of the image appears in the ring (the entire height is visible):

How the visible portion of the image corresponds to the source image:
 

2. Main resources page sliding panel images

We'll need these 1:1 images only for promoted resource items

Sample case study logo:

As it appears in the sliding panel:

Boundaries of the logo highlighted:

Sample webinar photo:

As it appears in the sliding panel:

Boundaries of the logo highlighted: