// ==UserScript==
// @name          Block Images 
// @description   Prevent loading of images
// @include       *
// ==/UserScript==

function unimage()
{
    var imgs = document.getElementsByTagName("img"); 
    for (var i = 0; i < imgs.length; i++) 
    { 
        var img = imgs[i]; 
        img.alt = img.src;
        img.src = ""; 
    } 
}

window.onload = unimage;