Looking for light alternatives to be able to see my photos in Xfce i met The Mirage,, a simple, beautiful and very light image viewer.
The Mirage, you have many options. Includes the ability to crop the image, resize it or change the color saturation. Furthermore, it automatically detects all the images found in the directory and displays them in the side panel, allowing you to choose which one you want to see.
It also includes options to open the image with Gimp or create Thumbnails of them, in addition to the usual things that these types of applications contain. Supports the formats png, jpg, svg, xpm, gif, bmp, tiff, among others and is available in several languages.
To install in Debian:
$ sudo aptitude install mirage