Disable HTML5 Page Visibility API to prevent website tracking you
// ==UserScript==
// @name Disable Page Visibility API
// @namespace https://www.kookxiang.com/
// @version 0.1
// @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);
Object.defineProperty(document, 'visibilityState', { get: function () { return "visible"; } });