Coly Photo Viewer is an interesting graphic tool that consists of a powerful image viewer, editor and converter.
With the Coly Photo Viewer editor you can do a series of photo retouches like red-eye deletion, resizing, rotation, adjustment, change the colour density, etc. The viewer lets you see all the images as thumbnails, and do slideshows of them all. It supports more than 30 different graphic formats (JPG, GIF, BMP, PNG, TIFF, PSD, ICO, etc).
When converting, Coly Photo Viewer lets you convert among the following formats: JPG, GIF, PNG, BMP, TARGA, ICO and TIFF.