Disable Page Visibility API

Disable HTML5 Page Visibility API to prevent website tracking you

K instalaci tototo skriptu si budete muset nainstalovat rozšíření jako Tampermonkey, Greasemonkey nebo Violentmonkey.

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

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Violentmonkey.

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Userscripts.

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

K instalaci tohoto skriptu si budete muset nainstalovat manažer uživatelských skriptů.

(Už mám manažer uživatelských skriptů, nechte mě ho nainstalovat!)

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.

(Už mám manažer uživatelských stylů, nechte mě ho nainstalovat!)

// ==UserScript==
// @name         Disable Page Visibility API
// @namespace    https://www.kookxiang.com/
// @version      0.2
// @description  Disable HTML5 Page Visibility API to prevent website tracking you
// @author       kookxiang
// @match        https://*/*
// @grant        none
// @run-at       document-start
// ==/UserScript==

document.addEventListener('visibilitychange', function (e) { e.stopImmediatePropagation(); }, true);
window.addEventListener('blur', function (e) { e.stopImmediatePropagation(); }, true);

Object.defineProperty(document, 'visibilityState', { get: function () { return "visible"; } });
Object.defineProperty(document, 'hidden', { get: function () { return false; } });