Install caja-wallpaper by entering the following commands in the terminal:
sudo apt update sudo apt install caja-wallpaper
Description:
Allows one to quickly set a wallpaper from folders
Caja is the official file manager for the MATE desktop. This package adds extended functionality to the Caja file manager. . Caja Wallpaper allows you to quickly set a wallpaper directly from file browser folders.
Homepage: http://www.mate-desktop.org/
Version: 1.20.0-1
Section: universe/x11