Review for Save Images by Li-An
Rated 5 out of 5 stars
The most complete plugin for saving images in Firefox. I love the "open all links to image in this page" function. Filters are great too.
There is a light alternative of this plugin: Pick Images (with thumbnails but not so much options). I would love to see the thumbnails view in Save Images.
To create your own collections, you must have a Mozilla Add-ons account.