Thread:Project:Current issues/Copy paste images with clipboard/reply

Quick shot: I don't think that is possible: When you want to use an image online, then you will have to put it online as well. You might be interested in $wgAllowExternalImages, but this only allows you to use images, which already are uploaded somewhere and you sound like this is not what you want. So in most cases this means that you will still have to upload the image. There is no way around this. That is also needed for MediaWiki to properly work with the image (e.g. for scaling and such). So the only possibility would be to have kind of an "automated background uploader": You paste an image into the editing window and MediaWiki automatically begins to upload that image.

However, I do not know of an extension, which could do that. And - even if there was one - you would still have to enter an image tag into the wiki text of your page in order to display the image there.