Works OK for me... Noté 5 sur 5 étoiles
It does what Gazza says it does, and I've got about 100 other extensions loaded! :)
It's great for those web pages that have lots of links to other pages that you have to go to and click again on a thumbnail to see the image.
For web page that have lots of direct links to images, you can use "Down Them All" extension.