If the “Link thumbnails to larger images” checkbox isticked in the image settings, a thumbnail image and a larger image isautomatically generated for product images. If unticked, only the thumbnailimage is created.

Images with filename starts with t_  are product thumbnails. When an image is addedto a product, the image file is sized down to the thumbnail size defined forthe product style. This thumbnail file begins with t_. If the image filedimension is smaller than the thumbnail size defined for the product style, thethumbnail image file is not resized, and will not have t_ prepended.

Images with filename starts with l_   are product larger image. When an image isadded to a product, the image file is sized down to the “Maximum size of linkedlarger image” setting. This larger file begins with l_. If the image filedimension is smaller than the setting, the larger image is not resized, andwill not have l_ prepended.

Images with filename starts with k_  are link images. Each page and product canhave a link image. Link images are created when the “Page/Link to other pagesor products” or “Product/Cross promotions” dialogs are used to create aPageLinkBox or ProductCrossPromotion. These image files begin with k_.