U need to install NerfFonts

sudo pacman -Sy swww wofi imagemagick calc

copy or create symlink for wallpaper.conf and wallpaper.css to .config/wofi folder

Usage: ./select-wallpaper.sh [options]

Options:
-h             height
-w             width
-d             path to images
-r             set random image as wallpaper
--help         show this message