Have you ever been browsing Konachan, looking at all those very nice anime girls and being annoyed that you have to open the image in a new tab and manually right click and save as?
Well, me too. I was a little annoyed at the clutter, especially when I have 20+ tabs open. So, I made a userscript that alters the buttons that open the image link to instead download the image; simple as that. The downloaded image is the same one that you would get by opening the image in a new tab, and it has the same name that it would have. Only downside, of course, is that you cannot decide where to save the file every time; however, that just means that less time is lost.