Feh is an open source command line based image viewer and manager for Unix systems. It is designed to be lightweight and fast, and can be used to view, manage and/or manipulate large collections of images easily. It supports a wide range of image formats and provides a wide range of features, such as slideshow mode, zoom, panning, gamma and color adjustments and a variety of other image manipulation capabilities. Feh also allows users to view images in a variety of layouts, including "tile" and "spiral" modes, as well as a fullscreen mode with optional slideshow support. Additionally, feh offers a range of options for setting background images, wallpaper and other settings. Finally, feh can be used to batch process images for resizing, color correction and more.
Discontinued The program is no longer updated. The latest versions, released in 2012-2013, can still be downloaded and purchased from the official website.