I'm considering using Craft for a new site. One requirement will be allowing members to upload and manage images. With Craft, can I set a size requirement for member uploaded images? So for example, if I only wanted to allow 400x400 image size to be uploaded, could I lock it down so that any image smaller or larger will just give an error?
If that's not possible, is there a way to resize/crop a large image down to the correct size?