Currently I have close to 1 GB of images uploaded. A lot of them are older versions of the same map or even images that I exported as a png instead of jpg.   It's not clear in the current UI if an image is in use. If the image list showed if the image was used in an article/map, it would be a lot easier and safer to remove images.   It both saves on storage for WA and it makes sure we can remain under our limits.   It would also be great if there was a bulk delete for unused images.