Zap - Greasemonkey script

zap.user.js

// ==UserScript==
// @name         zap
// @namespace    http://ferk.gitlab.io/
// @version      1.0
// @description  zap distractions from websites
// @author       Ferk
// @grant        none
// @downloadUrl  https://gist.github.com/Ferk/3d87d13b62645bbb886f5488c7f9fc18/raw/zap.user.js
// @updateUrl    https://gist.github.com/Ferk/3d87d13b62645bbb886f5488c7f9fc18/raw/zap.user.js
// @include https?://*
// @exclude https?://github.com/*#diff-*
// @exclude https?://github.com/*/files
// @exclude https?://www.cashlog.com/*
// @exclude https?://web.whatsapp.com/*
// @exclude https?://discordapp.com/*
// @exclude https?://localhost:*/*
// @exclude https?://*.deutsche-bank.de/*
// @exclude https?://*.wikipedia.org/*
// ==/UserScript==

(function() {
    function R(w) {
        try {
            var d = w.document,
                j, i, t, T, N, b, r = 1,
                C;
            for (j = 0; t = ["object", "embed", "applet", "iframe"][j]; ++j) {
                T = d.getElementsByTagName(t);
                for (i = T.length - 1;
                    (i + 1) && (N = T[i]); --i)
                    if (j != 3 || !R((C = N.contentWindow) ? C : N.contentDocument.defaultView)) {
                        b = d.createElement("div");
                        b.style.width = N.width;
                        b.style.height = N.height;
                        b.innerHTML = "<del>" + (j == 3 ? "third-party " + t : t) + "</del>";
                        N.parentNode.replaceChild(b, N);
                    }
            }
        } catch (E) {
            r = 0
        }
        return r
    }
    R(self);
    var i, x;
    for (i = 0; x = frames[i]; ++i) R(x);;;
    var d = document;

    function K(N, w) {
        var nn = d.createElement(w),
            C = N.childNodes,
            i;
        for (i = C.length - 1; i >= 0; --i) nn.insertBefore(C[i], nn.childNodes[0]);
        N.parentNode.replaceChild(nn, N);
    }

    function Z(t, w) {
        var T = document.getElementsByTagName(t),
            j;
        for (j = T.length - 1; j >= 0; --j) K(T[j], w);
    }
    Z("blink", "span");
    Z("marquee", "div");
    Z("iframe", "blocked-iframe");;;
    //Z("iframe", document.createTextNode("-iframe-"));;;
    var css = document.body.appendChild(document.createElement('style'));
    css.innerHTML = "*{background:white!important;color:black!important}:link,:link *{color:#00A!important} :visited,:visited *{color:#81A!important} img,img *{filter:opacity(2%)!important;} img:hover{filter:opacity(33%)!important;} img:active{filter:opacity(75%)!important;}";;;
})();