This free image viewer and converter supports an extensive list of formats:
http://www.tucows.com/preview/194967Multi language support, thumbnail option, preview option, slideshow, drag-and-drop support, fast directory view, batch conversion, e-mail option, audio CD player, print option, change color depth, scan support, cut/crop, IPTC edit, effects (sharpen, blur, Adobe Photoshop filters), capturing, extract icons from EXE/DLL/ICLs, lossless JPG rotation, EXE/SCR creation, many hotkeys, many command line options, many plug-ins