This document discusses slicing images for web use. Slicing an image involves dividing it into smaller pieces to allow for faster loading online. The slice tool is used to create slices by dragging over areas of the image. Slices can be created manually or by using guides for accuracy. Different slice types include table, image, and no image slices, and they should be named consistently. The slice tool options allow for normal, fixed aspect ratio, or fixed size slicing.