Amazon allows us to upload 2 different versions of the same Store image in order to optimize your content for mobile devices.
- To get started, begin by creating an image tile using the "Tile manager."
- Upload your first desktop formatted image.
- Scroll down on the "Tile manager" and find the section titled "Use custom mobile layout (optional)."
- Select the 2nd option, "Yes, I'll choose a custom mobile image."
- Upload your vertically cropped image. Amazon states your "Image must be at least 1,680 pixels wide and between 20 - 3,000 pixels in height."
- Click "Upload new."