Unfortunately it is not possible to scale down pictures in a wiki and give the user the possibility to enlarge those by clicking it. This features is very common in nearly every Homepage and other wikis. As we are not sharing our holiday pictures in our wiki but rather screenshots and pictures with important details this would be very helpful. At the moment we are forced to add pictures with a high resolution to the wiki. Thereby the wiki pages get really large and it is hard for the user to read those pages.