This program’s installer tries to set up a server that requires administrator privileges, which causes Microsoft Windows to display a warning prompt asking the user if they will allow the breech. If it is not granted, then a dialog is displayed stating that the program cannot get the authorization it needs to install.
If I can go to a webpage and see the images, why would I need administrator privileges to download the image? If the downloader program wants to do more, then it could prompt me when I reach that webpage.
Slimbrowser already has the feature built in to “Download all links,” and any file type can be typed in as a filter (e.g., *.jpg).
Since it is not clear why All Image Downloader needs special privileges, and no explanation is given, I had rather pass.