This is a great program that you don’t need to be in the web site design business to love. IrfanView is a fast and compact image viewer/converter. It is trying to be simple for beginners and powerful for professionals. Many supported file formats and features. Features include: multi-language support, Thumbnail option, Painting, slideshow, toolbar skins, fast directory browsing, batch conversion/editing, multipage editing, file search, change color depth, scanning, cut/crop, IPTC edit, capturing, lossless JPG operations, effects, ICC support, EXE/SCR creating, many hotkeys, command line options and plugins.
They’ve just released Irfanview Version 4.2 which you can download now and enjoy some new features which add Basic Unicode support and new options.