PANDEMONIUM

// ==UserScript==
// @name         PANDEMONIUM
// @namespace    REGNAT
// @description  SATANI
// @version      VITAE !
// @include      https://anon.fm/feedback*
// @include      https://alcxemuct.accountant/feedback*
// @grant        none
// ==/UserScript==

document.body.style.background = '#eee';

const i = document.getElementsByTagName`img`[0];
const ca = document.createElement`canvas`;
[ca.width, ca.height] = [164, 62];
const c = ca.getContext`2d`;
i.addEventListener('load', onCaptchaLoaded);

i.style.backgroundColor = '#fff';

function onCaptchaLoaded() {
    drawShiftedImage(i);
}

function drawShiftedImage(image, xMaxShift = ca.width, yMaxShift = ca.height, clean = false) {
    const rx = Math.random()*xMaxShift -(200-ca.width) |0;
    const ry = Math.random()*yMaxShift -(70-ca.height) |0;
    const mrx = -ca.width +rx;
    const mry = -ca.height+ry;
    console.log(mrx, mry)
    if (clean)
        c.clearRect(0, 0, ca.width, ca.height)
    c.drawImage(image, rx, ry);
    c.drawImage(image, mrx, ry);
    c.drawImage(image, rx, mry);
    c.drawImage(image, mrx, mry);
    document.body.style.backgroundImage = `url(${ca.toDataURL()})`
}