Zolxys said:
A simple userscript to do the job would be written specifically for the website and job you wish to do.

A userscript is simply a block of javascript that is added to a page when it loads. It can easily be written to load an image from a link, save it once it has been loaded, and then click on a link to go to the next one.
And here my prombles start: I have literally no experience with JS.