Image Convertor Plus
A nifty shell extension add-on to the Explorer context menu. After it's installed, right-click on a .gif, .tif, .jpg, .tga, or .bmp image to a see a thumbnail of the image and access commands that let you convert the graphic to one of the supported formats. You can also set the image as wallpaper using tile, center, fit-to-screen, and fit-to-desktop settings, plus copy it to the Windows Clipboard without opening the file. ImageConverter works with one file or all the supported graphics types you have highlighted in Explorer. Several options are provided. Until you register, you'll see a nag screen after each image you convert. You can create gif or jpg page with few thumbnails.