Question about saving scrolling position on a website

Hello guys! I'd like to ask you, how could i save scrolling positing of a particular website? Let's say there is a website where i need to manually downoload tons of pictures, but it's not 1 or 2 days job. But i want to be able to always downoload the new image , and avoid downoloading the same image over and over again, so i need to save the "scrolling" position somehow. I tried to use 1 chrome addon, but it haven't worked. Any idea if there is an addont like that somewhere? Let me know, thanks!