Why does SW Pillar Slides download an image smaller than my original file?

SW Pillar Slides displays each image in a column rather than across the full browser width, so it requests an image size suited to that space. This reduces the image file size while keeping it sharp on modern screens. A 3:2 source image, such as 900 × 600 or 1200 × 800 pixels, is a practical starting point. If the important part of the image is cut off, adjust the image position or choose a source image with more room around the subject.