User:Fdedhia/hide-images.css

img { visibility:hidden; }

img.hide-images-handled { visibility:visible; }

span.hide-images-wrapper { background:url(https://upload.wikimedia.org/wikipedia/commons/3/31/Battenburg-white-gray.svg.png) repeat; background-size:contain; outline:1px solid red; cursor:pointer; display:inline-block; }

span.hide-images-wrapper img.hide-images-handled { visibility:hidden; }