I spend a few hours this weekend working on a bootstrap/angular.js frontend for mod_autoindex of apache.
Through bootstrap and angular its optimized for mobility first. It should scale nicely on the any screen. You can also swipe from left to right or right to left in order to move to the next or previous picture.
The code and description how to set it up is hosted at github repository. You can have a look at how it looks at my gallery.