If you’re looking for a more convenient way of saving media (whether it’s an image or a video) from the Web, try this neat trick with Firefox.

In Firefox, if you right click and go to ‘View Page Info’ (it’ll show
up if you’re right-clicking on something that isn’t an image) you’ll see
a tabs called ‘media.’ In this tab you can see any media that is on the
page (movies, images, etc) and you can save those files from your hard
drive from there (there is a ’save as’ button). It’s a real timesaver compared to right-clicking on individual images and downloading them from
your hard drive.

Via Yano What I Mean