Kinda sorta does the job, but often doesn't at all. Instead of simply pulling images from browser cache, it perform some sort of a crawl that pulls irrelevant images more often than not. It is also QUITE DANGEROUS. I almost got banned from one website and got completely blocked from another for using it, as this activity triggered some security measures. I've been using "Image Downloader" for Chrome for years without any issues and I though this would be a good replacement. Sadly, it isn't.

Bottom line: kinda works most of the time, very dangerous to use on some websites.