image-hider.user.js

// ==UserScript==
// @name         image hider
// @namespace    https://gist.github.com/chadlavi/fae974f20b5d7567fbf6a94931a0e2d7
// @downloadURL  https://gist.github.com/chadlavi/fae974f20b5d7567fbf6a94931a0e2d7/raw/image-hider.user.js
// @updateURL    https://gist.github.com/chadlavi/fae974f20b5d7567fbf6a94931a0e2d7/raw/image-hider.user.js
// @version      1.26
// @description  hide  images until you want them
// @include        https://6.f*.org/*
// @require      https://ajax.googleapis.com/ajax/libs/jquery/2.2.0/jquery.min.js
// @copyright    2018, Chad Lavimoniere
// ==/UserScript==
/* jshint -W097 */
'use strict';

function hideImages() {
    var imgs=document.getElementsByTagName("img");
    var img_count=imgs.length;
    for (var i=0; i<img_count; i++) {
        var A = document.getElementsByTagName("img")[i]; 
        var h = A.height;
        var w = A.width;
        var x=imgs[i].getAttribute("src"); 
        var div = document.createElement("div"); 
        A.parentNode.replaceChild(div, A); 
        var b = document.createElement("div"); 
        var img = document.createElement("img");
        div.appendChild(b); 
        div.appendChild(img);
        img.setAttribute("src", x);
        img.setAttribute("style", "display: inline-block; width:"+w+"px; height:"+h+"px; position: absolute; opacity: 0;")
        b.setAttribute("style", "background-color: none; width:"+w+"px; height:"+h+"px; color: inherit; text-align: center; line-height:"+h+"px; position: absolute;"); 
        b.setAttribute("class", "image-hider");
        img.setAttribute("class", "hidden");
        div.setAttribute("style", "background-color: none; width:"+w+"px; height:"+h+"px; position: relative;");
        b.innerHTML="[image]";
        img.setAttribute("onclick", "if (this.getAttribute(\"class\")==\"hidden\") {this.style.opacity=1; this.setAttribute('class', 'shown');} else {this.style.opacity=0; this.setAttribute('class', 'hidden');}");
    }
}
$(window).on("load", function() {

    setTimeout(function(){
    //do what you need here
        hideImages();
    }, 100);
});