I started working on an image upload feature for this site. I think I have it most of the way there. It's sort of clunky but that fits this web 1.0 site.
Because saving images takes wayy too much space, I decided to use Imgur's image upload APIs to host and upload the images. On successful uploads, I then keep track of which threads have images attached and have a table that keeps track of the filename, image url, etc.

It works okay from what I tested. Large files don't like to go through though. The Imgur max upload size is 10mb but I noticed that anything larger than around 3mb fails.

Anyway, I made it available on the test forum that's linked in the prologue or you can click: https://nediscapp.com/Indices/54.html