Undetectorized – Limited RAF

Keeps sites blind to tab switches and window blur. Fully blocks all focus and visibility checks, now with requestAnimationFrame capped below 10fps.

Fra og med 21.11.2025. Se den nyeste version.

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Userscripts to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install a user script manager extension to install this script.

(I already have a user script manager, let me install it!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name          Undetectorized – Limited RAF
// @namespace     bypass.focus.fixed
// @version       5.5
// @author        Gaze
// @icon          https://i.imgur.com/l8qT82q.jpeg
// @description   Keeps sites blind to tab switches and window blur. Fully blocks all focus and visibility checks, now with requestAnimationFrame capped below 10fps.
// @include       *
// @run-at        document-start
// ==/UserScript==

(function() {
    const uw = unsafeWindow;

    // --- Patch document & window focus/visibility ---
    const patch = () => {
        try {
            uw.document.hasFocus = () => true;
            uw.hasFocus = () => true;
            Object.defineProperty(document, "visibilityState", { get: () => "visible" });
            ["hidden","mozHidden","msHidden","webkitHidden"].forEach(p =>
                Object.defineProperty(document, p, { value: false })
            );
            window.onblur = null;
            window.onfocus = null;
            document.onblur = null;
            document.onfocus = null;
            window.focus = () => true;
            document.focus = () => true;
            window.onbeforeunload = null;
            document.onbeforeunload = null;
            Object.defineProperty(window, "onbeforeunload", { set: () => true, get: () => null });
        } catch(e){}
    };

    // --- Block all focus/blur/visibility events ---
    const blockEvents = () => {
        try {
            const evs = [
                "visibilitychange","webkitvisibilitychange","mozvisibilitychange","msvisibilitychange",
                "blur","focus","focusin","focusout",
                "mouseleave","mouseout","mouseenter","mouseover",
                "pageshow","pagehide","resume","freeze"
            ];
            const handler = e => {
                e.stopImmediatePropagation();
                e.stopPropagation();
                e.preventDefault();
            };
            evs.forEach(ev => {
                window.addEventListener(ev, handler, true);
                document.addEventListener(ev, handler, true);
            });
        } catch(e){}
    };

    // --- Hook addEventListener to ignore critical events ---
    const hookAddEvent = () => {
        try {
            const blocked = [
                "visibilitychange","webkitvisibilitychange","mozvisibilitychange","msvisibilitychange",
                "blur","focus","focusin","focusout",
                "mouseleave","mouseout","mouseenter","mouseover",
                "beforeunload",
                "pageshow","pagehide","resume","freeze"
            ];
            const orig = EventTarget.prototype.addEventListener;
            EventTarget.prototype.addEventListener = function(type, listener, opts) {
                if (blocked.includes(type)) return;
                return orig.call(this, type, listener, opts);
            };
        } catch(e){}
    };

    // --- Patch timing & limit requestAnimationFrame ---
    const patchTiming = () => {
        try {
            const base = performance.now();
            performance.now = () => base + Math.random() * 0.01;

            const oRAF = uw.requestAnimationFrame;
            let lastCall = 0;
            const minInterval = 111; // ~9 FPS

            uw.requestAnimationFrame = cb => {
                const now = performance.now();
                const delay = Math.max(0, minInterval - (now - lastCall));
                lastCall = now + delay;
                return setTimeout(() => cb(performance.now()), delay);
            };

            const oTO = uw.setTimeout;
            uw.setTimeout = (fn, t) => oTO(fn, 0);
        } catch(e){}
    };

    // --- Initial patching ---
    patch();
    blockEvents();
    hookAddEvent();
    patchTiming();

    // --- Keep patches alive ---
    setInterval(() => {
        patch();
        hookAddEvent();
        patchTiming();
    }, 100);

})();