nanogallery2 VS hammer.js

I've been looking for a free gallery software, where you don't just have a a grid option of square images. It really doesn't need to have a light box, I am fine with making pages for each picture when you click on it, because I need to show details of the painting on it. I have looked at nanogallery2 (https://nanogallery2.nanostudio.org/) and really like the justifier option, but for me, it is to difficult to install. Any suggestions? I am not interested in wordpress.

12. Hammer.JS

Actually, I thought if I used hammerjs, it would be easy, but actually I gave up using that since it seemed that hammerjs's development wasn't active any more unfortunately.

Looking at https://delassus.com/javascripts/app.js you can see they used hammer.js(https://hammerjs.github.io/) to achieve the gestures, which I am assuming is your focus here.

Hammer.js is a library and gives you the ability to add touch gestures on websites. It means it can recognize & track gestures performed by the fingers and mouse of the user and make animations and all that cool stuff. And you can know the steps on their website here.

25. HammerJS

I had no idea how bad listening for things like key presses and dragging events are today. Given how nice and fairly standard a lot of the APIs across browsers and platforms have become, I was shocked at how rough this space is. I think if I had to do this again, this will be one area where I defer to a library (like hammer.js).

Maybe something using HammerJS would make it cleaner if you're using a vanilla solution right now? https://hammerjs.github.io/