How do I change the size of an image?
To resize an image, you must first select the image. Then drag one of the selection handles around the selected image to resize it. Dragging the corner of an image will alter the size without distorting the image’s proportions. Dragging from the sides of the image will alter the size in a single direction, distorting the image.
For a video tutorial about resizing an image, see Squid - Add & Crop Images.