a minimalist wallpaper script that generates html code from your wallpaper dir
and feeds it into yad. yad then uses hsetroot / feh / xwallpaper or pcmanfm --desktop

i know there are a lot of tools like this, but i think this is the only one that uses yads html function
in fact the only other script i know, that makes uses of this is my welcome script
and since there is nothing on this to be found anywhere, (other than just open a url)
this would be a good example for that

you will need a yad with builtin webkit to run this

Have fun