CreateThumbnails Service will be available in Finder`s Services menu and contextual menu if image files are selected.CreateThumbnails Service enables you to create thumbnails of one or more images with a suffix of your choice. Size options are 128, 96 or 72 pixels.CreateThumbnails Service is offering support for several formats: JPEG, BMP, GIF, JPEG 2000, PDF, PICT, PNG and TIFF.