Hi,
This is a slideshow in HTML / JS which shows random images / videos of an existing files list.
All you have to do is to generate a list of files you want to see, then clicking "Browse" below to select it to start the slideshow. In Windows you can use this command for instance :
dir "D:\Documents\Images" /A-D /S /b /-p /o:gen >List_Files.txt
Here, you'll be able to edit some parameters of the slideshow.