🚫 Bypass Fullscreen Detection 🚫

Greasy Fork is available in English.

🚫 Bypass Fullscreen Detection 🚫

Tricks websites into thinking they are always in fullscreen mode

Ask a question, post a review, or report the script.

Wrap lines

// ==UserScript==
// @name         🚫 Bypass Fullscreen Detection 🚫
// @namespace    http://tampermonkey.net
// @version      1.0
// @description  Tricks websites into thinking they are always in fullscreen mode
// @author       Otjl12
// @match        *://*/*
// @grant        none
// @run-at       document-start
// @license      MIT
// @compatible   chrome
// @compatible   firefox
// @compatible   edge
// @compatible   brave
// @compatible   opera
// @compatible   safari
// ==/UserScript==

(function() {
    'use strict';

    // 1. Lie to the website about the current fullscreen element
    // Instead of returning null when minimized, it will pretend the page body is maximized
    Object.defineProperty(document, 'fullscreenElement', {
        get: () => document.body,
        configurable: true
    });

    Object.defineProperty(document, 'webkitFullscreenElement', {
        get: () => document.body,
        configurable: true
    });

    Object.defineProperty(document, "fullscreenEnabled", {
        get: () => true,
        configurable: true
    });

    // 2. Kill the events that tell the website "you just left fullscreen"
    const blockEvents = ['fullscreenchange', 'webkitfullscreenchange', 'mozfullscreenchange', 'MSFullscreenChange'];

    blockEvents.forEach(eventType => {
        window.addEventListener(eventType, function(e) {
            e.stopImmediatePropagation();
        }, true);

        document.addEventListener(eventType, function(e) {
            e.stopImmediatePropagation();
        }, true);
    });

    console.log("Fullscreen spoofing active.");
})();