It has some nice features, like how it's really easy to select and download images off of a page, and it has its own "tab bar" that saves results for multiple pages as long as you don't exit out. It's almost capable as a image viewer but it's mostly an image downloader.

Very light and simple, which is good - but for me, it's a little too rough around the edges for a comfortable gallery viewing experience. Dark mode would be a huge plus for starters.

Download All Images is better in almost every way, especially because of a combination of features where you usually get the high resolution image you want instead of a blurry thumbnail. (find images behind links, filter out images of a certain size, try to exclude identical images)

But again I'll say this extension has some advantages: it's a big (page-filling), convenient, easily resized gallery. The extension is so minimal that you can zoom the page in and out and the gallery will resize immediately. Probably perfect for somebody out there, but I need something more polished.