...It is free from menus and other GUI gadgets, and controlled primarily by the keyboard. It supports the following image file formats: GIF, JPEG, PCX, PNG, PNM (PBM/PGM/PPM), TIFF and XBM. It is able to scale images with non-square pixels so that they display correctly on a display with square pixels. It supports RGB, Gray and CMYK ICC profiles in TIFF and JPEG, RGB and Gray ICC profiles in PNG, and RGB ICC profiles in GIF. Display of Exif, XMP and other metadata is realized through the use of ExifTool.