NOTICE: By continued use of this site you understand and agree to the binding Terms of Service and Privacy Policy.
// ==UserScript== // @name YouTube Dark Auto-Enable // @description Auto-enables YouTube Dark theme (https://support.google.com/youtube/answer/7385323) // @version 1 // @grant none // @match *://*.youtube.com/* // @noframes // @run-at document-start // @require https://cdn.jsdelivr.net/npm/js-cookie@2/src/js.cookie.min.js // @copyright 2017, solkaz (https://openuserjs.org/users/solkaz) // @license MIT // ==/UserScript== const decodePREF = (cookieValue) => new Map(cookieValue.split('&').map(value => value.split('='))); const encodePREF = prefsMap => { let encoded = ''; prefsMap.forEach((value, key) => { encoded = encoded.concat(`${key}=${value}&`); }); return encoded.substring(0, encoded.length - 1); }; const prefsMap = decodePREF(Cookies.get('PREF') || ''); if (!prefsMap.get('f6')) { prefsMap.set('f6', 400); Cookies.set('PREF', encodePREF(prefsMap), { domain: '.youtube.com' }); }