Magnific Popup - The greater part of Lightbox modules will completely preload a picture before showing it.
DVDVideoSoft Image Convert and Resize - Free Image Convert and Resize is a compact yet powerful program for batch mode image processing.
jQuery Lightbox - jQuery Lightbox plugins are utilized to showcase images and other web stuff using modal dialogs.
Ralpha Image Resizer - High-speed image batch conversion tool
prettyPhoto - prettyPhoto is a jQuery Lightbox clone.
Caesium Image Compressor - Compress your pictures up to 90% without visible quality loss.