I search for pictures on internet, and i manage a picture collection.
If you find on the web a page with icons, each one linked to a full picture, I can download the picture.
I can limit my upload to this case, this limit the advertising, the popup, ....
I can store it in collections avoid to store twice the same picture, even at different resolution.
I can't help you to manage yours collection, ordering yours pictures, grouping it in sets.
I can also
Do for files than pictures.
treat a list of pages, top list or web referencement
upload every picture of a site but it is not my speciality, others tools are betters for that