The Ristretto Image Viewer is an application that can be used to view, and scroll through images. It can be used to run a slideshow of images, open images with other applications like an image-editor or configure an image as the desktop wallpaper. The image types supported by Ristretto are those supported by the gdk-pixbuf library. This library itself supports a number of basic image types (JPEG, PNG, TIFF, etc.), but then relies on optional libraries to extend the range of supported image types. This means that you will have to install these libraries yourself to extend the range of image types supported by Ristretto. Examples: libwmf, libopenraw, libavif, libheif, libjxl, librsvg, webp-pixbuf-loader. The following describes how you can use Ristretto, and how you can configure it to your preferences.