Nuke the images, contrast, and mouse events on a page.

NXS-ible

const doNothing = (event) => { event.preventDefault(); event.stopPropagation(); return false; };
window.onmousewheel = doNothing;

let ss = document.createElement('style');
ss.innerHTML = "body {-webkit-filter: blur(1px) contrast(.8) grayscale(1); pointer-events: none;}";
ss.innerHTML += "* {background-image: none !important}";
ss.innerHTML += "img, svg {opacity: 0 !important;}";
ss.innerHTML += "::-webkit-scrollbar {display: none}";
ss.innerHTML += ":focus {border: dotted 2px blue !important; outline: dotted 2px blue !important;}";
let head = document.getElementsByTagName('head')[0];
head.appendChild(ss);