Thumbnailer is an applescript based tool that takes image files and creates scaled thumbnail and full sized images for use on the WWW. Its real use is that it automatically writes all the HTML for linking the thumbnail to the full sized image including SRC, ALT, HEIGHT, WIDTH tags. It also will stamp the file size of the full sized image on the thumbnail and label the full sized image with a text string (i.e., a copyright string), and much more (see the included docs). This is NOT an application but a script that uses clip2gif as an engine.
