It is a very simple program that allows you to have a quick overview of the contents of some files.
The program requires some python libraries and I have made a list of those needed for some distributions. they are generally always the same, just the names change a little.
Video: https://www.youtube.com/watch?v=AB1SRV1ldnw
Github: https://github.com/Nyre221/dolphin-quick-view
Download: https://www.pling.com/p/2083711/
Still better than the official reddit app.