This script optimizes YouTube's performance by modified configs, shorts redirect and much more!
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// ==UserScript==
// @name YouTube Web Tweaks
// @version 4.2.5
// @description This script optimizes YouTube's performance by modified configs, shorts redirect and much more!
// @author Magma_Craft
// @license MIT
// @match *://www.youtube.com/*
// @namespace https://greasyfork.org/en/users/933798
// @icon https://www.youtube.com/favicon.ico
// @unwrap
// @run-at document-end
// @unwrap
// @grant none
// ==/UserScript==
// Enable strict mode to catch common coding mistakes
"use strict";
// Define the flags to assign to the EXPERIMENT_FLAGS object
const flagsToAssign = {
// Standard tweaks (YT config editor + Disable animations)
IS_TABLET: true,
DISABLE_YT_IMG_DELAY_LOADING: true,
polymer_verifiy_app_state: false,
desktop_delay_player_resizing: false,
web_animated_actions: false,
web_animated_like: false,
web_animated_like_lazy_load: false,
render_unicode_emojis_as_small_images: true,
smartimation_background: false,
kevlar_refresh_on_theme_change: false,
// Disable cinematics (aka ambient lighting)
kevlar_measure_ambient_mode_idle: false,
kevlar_watch_cinematics_invisible: false,
web_cinematic_theater_mode: false,
web_cinematic_fullscreen: false,
enable_cinematic_blur_desktop_loading: false,
kevlar_watch_cinematics: false,
web_cinematic_masthead: false,
web_watch_cinematics_preferred_reduced_motion_default_disabled: false
};
const updateFlags = () => {
// Check if the EXPERIMENT_FLAGS object exists in the window.yt.config_ property chain
const expFlags = window?.yt?.config_?.EXPERIMENT_FLAGS;
// If EXPERIMENT_FLAGS is not found, exit the function
if (!expFlags) return;
// Assign the defined flags to the EXPERIMENT_FLAGS object
Object.assign(expFlags, flagsToAssign);
};
// Create a MutationObserver that calls the updateFlags function when changes occur in the document's subtree
const mutationObserver = new MutationObserver(updateFlags);
mutationObserver.observe(document, { subtree: true, childList: true });
// Other tweaks to be added (CSS codes, skip ads, etc...)
(function() {
let css = `
/* Remove 'Shorts' tab */
#endpoint.yt-simple-endpoint.ytd-guide-entry-renderer.style-scope[title="Shorts"],
a.yt-simple-endpoint.style-scope.ytd-mini-guide-entry-renderer[title="Shorts"] {
display: none !important;
}
/* Remove filter categories on search results and playlists to make the UI less usable on low-entry machines */
ytd-item-section-renderer.style-scope.ytd-section-list-renderer[page-subtype="playlist"] > #header.ytd-item-section-renderer > ytd-feed-filter-chip-bar-renderer {
display: none !important;
}
div#chip-bar.style-scope.ytd-search-header-renderer > yt-chip-cloud-renderer.style-scope.ytd-search-header-renderer > div#container.style-scope.yt-chip-cloud-renderer {
display: none !important;
}
/* Remove all annoyances (excludes 'YT TV and Premium' banners) */
ytd-action-companion-ad-renderer, ytd-display-ad-renderer, ytd-video-masthead-ad-advertiser-info-renderer, ytd-video-masthead-ad-primary-video-renderer, ytd-in-feed-ad-layout-renderer, ytd-ad-slot-renderer, yt-about-this-ad-renderer, yt-mealbar-promo-renderer, ytd-ad-slot-renderer, ytd-in-feed-ad-layout-renderer, .ytd-video-masthead-ad-v3-renderer, div#root.style-scope.ytd-display-ad-renderer.yt-simple-endpoint, div#sparkles-container.style-scope.ytd-promoted-sparkles-web-renderer, div#main-container.style-scope.ytd-promoted-video-renderer, #player-ads, .ytwPanelAdHeaderImageLockupViewModelHost, ytd-ads-engagement-panel-content-renderer, #content.ytd-ads-engagement-panel-content-renderer, ytd-engagement-panel-section-list-renderer[target-id="engagement-panel-ads"], ad-slot-renderer, ytm-promoted-sparkles-web-renderer, masthead-ad, #masthead-ad, ytd-video-quality-promo-renderer, #yt-lang-alert-container, .YtmPaidContentOverlayHost, .ytd-primetime-promo-renderer, ytd-brand-video-singleton-renderer, #yt-feedback, #yt-hitchhiker-feedback, ytd-merch-shelf-renderer, ytd-enforcement-message-view-model, div[is-shared-heimdall], tp-yt-iron-overlay-backdrop.opened {
display: none !important;
}
#movie_player.ad-showing video {
filter: blur(100px) opacity(0.25) grayscale(0.5);
}
#movie_player.ad-showing .ytp-title,
#movie_player.ad-showing .ytp-title-channel,
.ytp-visit-advertiser-link,
.ytp-ad-visit-advertiser-button,
ytmusic-app:has(#movie_player.ad-showing)
ytmusic-player-bar
:is(.title, .subtitle) {
filter: blur(4px) opacity(0.5) grayscale(0.5);
transition: 0.05s filter linear;
}
:is(#movie_player.ad-showing .ytp-title,#movie_player.ad-showing .ytp-title-channel,.ytp-visit-advertiser-link,.ytp-ad-visit-advertiser-button,ytmusic-app:has(#movie_player.ad-showing) ytmusic-player-bar :is(.title,.subtitle)):is(:hover,:focus-within) {
filter: none;
}
.ytp-suggested-action-badge {
visibility: hidden !important;
}
ytd-watch-metadata.ytd-watch-flexy {
padding-bottom: 36px !important;
}
/* Remove every related list view except ytd-compact-video render and limit the number of yt-lockup-view-model */
#related ytd-compact-playlist-renderer, #related ytd-compact-radio-renderer, #related ytd-compact-movie-renderer, #related yt-lockup-view-model, #related ytd-channel-renderer, #related ytd-continuation-item-renderer, #related #continuations {
display: none !important
}
#related yt-lockup-view-model:nth-of-type(1), #related yt-lockup-view-model:nth-of-type(2), #related yt-lockup-view-model:nth-of-type(3), #related yt-lockup-view-model:nth-of-type(4), #related yt-lockup-view-model:nth-of-type(5), #related yt-lockup-view-model:nth-of-type(6), #secondary #related yt-lockup-view-model:nth-of-type(7), #secondary #related yt-lockup-view-model:nth-of-type(8), #secondary #related yt-lockup-view-model:nth-of-type(9), #secondary #related yt-lockup-view-model:nth-of-type(10) {
display: flex !important
}
/* More tweaks to the UI (this was meant for older browsers without uBlock Origin) */
#secondary.ytd-watch-grid {
width: 402px !important;
min-width: 300px !important
}
ytd-watch-flexy[default-layout][reduced-top-margin] #primary.ytd-watch-flexy, ytd-watch-flexy[default-layout][reduced-top-margin] #secondary.ytd-watch-flexy {
padding-top: var(--ytd-margin-6x) !important
}
ytd-watch-metadata[title-headline-xs] h1.ytd-watch-metadata, ytd-watch-metadata[title-headline-m] h1.ytd-watch-metadata {
font-size: 2rem !important;
line-height: 2.8rem !important
}
ytd-search ytd-video-renderer, ytd-search ytd-channel-renderer, ytd-search ytd-playlist-renderer, ytd-search ytd-radio-renderer, ytd-search ytd-movie-renderer, ytd-video-renderer.style-scope.ytd-item-section-renderer, ytd-playlist-renderer.style-scope.ytd-item-section-renderer, ytd-search .lockup.ytd-item-section-renderer {
margin-top: 16px !important
}
ytd-compact-video-renderer.style-scope.ytd-item-section-renderer, #related .lockup.ytd-item-section-renderer {
margin-top: 8px !important
}`;
if (typeof GM_addStyle !== "undefined") {
GM_addStyle(css);
} else {
let styleNode = document.createElement("style");
styleNode.appendChild(document.createTextNode(css));
(document.querySelector("head") || document.documentElement).appendChild(styleNode);
}
})();
var oldHref = document.location.href;
if (window.location.href.indexOf('youtube.com/shorts') > -1) {
window.location.replace(window.location.toString().replace('/shorts/', '/watch?v='));
}
window.onload = function() {
var bodyList = document.querySelector("body")
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(mutation) {
if (oldHref != document.location.href) {
oldHref = document.location.href;
console.log('location changed!');
if (window.location.href.indexOf('youtube.com/shorts') > -1) {
window.location.replace(window.location.toString().replace('/shorts/', '/watch?v='));
}
}
});
});
var config = {
childList: true,
subtree: true
};
observer.observe(bodyList, config);
};
(() => {
let popupState = 0;
let popupElement = null;
const rate = 1;
const Promise = (async () => { })().constructor;
const PromiseExternal = ((resolve_, reject_) => {
const h = (resolve, reject) => { resolve_ = resolve; reject_ = reject };
return class PromiseExternal extends Promise {
constructor(cb = h) {
super(cb);
if (cb === h) {
/** @type {(value: any) => void} */
this.resolve = resolve_;
/** @type {(reason?: any) => void} */
this.reject = reject_;
}
}
};
})();
const insp = o => o ? (o.polymerController || o.inst || o || 0) : (o || 0);
let vload = null;
const fastSeekFn = HTMLVideoElement.prototype.fastSeek || null;
const addEventListenerFn = HTMLElement.prototype.addEventListener;
if (!addEventListenerFn) return;
const removeEventListenerFn = HTMLElement.prototype.removeEventListener;
if (!removeEventListenerFn) return;
const ytPremiumPopupSelector = 'yt-mealbar-promo-renderer.style-scope.ytd-popup-container:not([hidden])';
const DEBUG = 0;
const rand = (a, b) => a + Math.random() * (b - a);
const log = DEBUG ? console.log.bind(console) : () => 0;
//$0.$['dismiss-button'].click()
const ytPremiumPopupClose = function () {
const popup = document.querySelector(ytPremiumPopupSelector);
if (popup instanceof HTMLElement) {
if (HTMLElement.prototype.closest.call(popup, '[hidden]')) return;
const cnt = insp(popup);
const btn = cnt.$ ? cnt.$['dismiss-button'] : 0;
if (btn instanceof HTMLElement && HTMLElement.prototype.closest.call(btn, '[hidden]')) return;
btn && btn.click();
}
}
//div.video-ads.ytp-ad-module
const clickSkip = function () {
// ytp-ad-skip-button
const isAdsContainerContainsButton = document.querySelector('.video-ads.ytp-ad-module button');
if (isAdsContainerContainsButton) {
const btnFilter = e => HTMLElement.prototype.matches.call(e, ".ytp-ad-overlay-close-button, .ytp-ad-skip-button-modern, .ytp-ad-skip-button") && !HTMLElement.prototype.closest.call(e, '[hidden]');
const btns = [...document.querySelectorAll('.video-ads.ytp-ad-module button[class*="ytp-ad-"]')].filter(btnFilter);
console.log('# of ads skip btns', btns.length);
if (btns.length !== 1) return;
const btn = btns[0];
if (btn instanceof HTMLElement) {
btn.click();
}
}
};
const adsEndHandlerHolder = function (evt) {
adsEndHandler && adsEndHandler(evt);
}
let adsEndHandler = null;
const videoPlayingHandler = async function (evt) {
try {
if (!evt || !evt.target || !evt.isTrusted || !(evt instanceof Event)) return;
const video = evt.target;
const checkPopup = popupState === 1;
popupState = 0;
const popupElementValue = popupElement;
popupElement = null;
if (video.duration < 0.8) return;
await vload.then();
if (!video.isConnected) return;
const ytplayer = HTMLElement.prototype.closest.call(video, 'ytd-player, ytmusic-player');
if (!ytplayer || !ytplayer.is) return;
const ytplayerCnt = insp(ytplayer);
const player_ = await (ytplayerCnt.player_ || ytplayer.player_ || ytplayerCnt.playerApi || ytplayer.playerApi || 0);
if (!player_) return;
if (typeof ytplayerCnt.getPlayer === 'function' && !ytplayerCnt.getPlayer()) {
await new Promise(r => setTimeout(r, 40));
}
const playerController = await ytplayerCnt.getPlayer() || player_;
if (!video.isConnected) return;
if ('getPresentingPlayerType' in playerController && 'getDuration' in playerController) {
const ppType = await playerController.getPresentingPlayerType();
log('m02a', ppType);
if (ppType === 1 || typeof ppType !== 'number') return; // ads shall be ppType === 2
// const progressState = player_.getProgressState();
// log('m02b', progressState);
// if(!progressState) return;
// const q = progressState.duration;
// if (popupState === 1) console.debug('m05b:ytPremiumPopup', document.querySelector(ytPremiumPopupSelector))
const q = video.duration;
const ytDuration = await playerController.getDuration();
log('m02c', q, ytDuration, Math.abs(ytDuration - q));
if (q > 0.8 && ytDuration > 2.5 && Math.abs(ytDuration - q) > 1.4) {
try {
log('m02s', 'fastSeek', q);
video.muted = true;
const w = Math.round(rand(582, 637) * rate);
const sq = q - w / 1000;
adsEndHandler = null;
const expired = Date.now() + 968;
removeEventListenerFn.call(video, 'ended', adsEndHandlerHolder, false);
removeEventListenerFn.call(video, 'suspend', adsEndHandlerHolder, false);
removeEventListenerFn.call(video, 'durationchange', adsEndHandlerHolder, false);
addEventListenerFn.call(video, 'ended', adsEndHandlerHolder, false);
addEventListenerFn.call(video, 'suspend', adsEndHandlerHolder, false);
addEventListenerFn.call(video, 'durationchange', adsEndHandlerHolder, false);
adsEndHandler = async function (evt) {
adsEndHandler = null;
removeEventListenerFn.call(video, 'ended', adsEndHandlerHolder, false);
removeEventListenerFn.call(video, 'suspend', adsEndHandlerHolder, false);
removeEventListenerFn.call(video, 'durationchange', adsEndHandlerHolder, false);
if (Date.now() < expired) {
const delay = Math.round(rand(92, 117));
await new Promise(r => setTimeout(r, delay));
Promise.resolve().then(() => {
clickSkip();
}).catch(console.warn);
checkPopup && Promise.resolve().then(() => {
const currentPopup = document.querySelector(ytPremiumPopupSelector);
if (popupElementValue ? currentPopup === popupElementValue : currentPopup) {
ytPremiumPopupClose();
}
}).catch(console.warn);
}
};
if (fastSeekFn) fastSeekFn.call(video, sq);
else video.currentTime = sq;
} catch (e) {
console.warn(e);
}
}
}
} catch (e) {
console.warn(e);
}
};
document.addEventListener('loadedmetadata', async function (evt) {
try {
if (!evt || !evt.target || !evt.isTrusted || !(evt instanceof Event)) return;
const video = evt.target;
if (video.nodeName !== "VIDEO") return;
if (video.duration < 0.8) return;
if (!video.matches('.video-stream.html5-main-video')) return;
popupState = 0;
vload = new PromiseExternal();
popupElement = document.querySelector(ytPremiumPopupSelector);
removeEventListenerFn.call(video, 'playing', videoPlayingHandler, { passive: true, capture: false });
addEventListenerFn.call(video, 'playing', videoPlayingHandler, { passive: true, capture: false });
popupState = 1;
let trial = 6;
await new Promise(resolve => {
let io = new IntersectionObserver(entries => {
if (trial-- <= 0 || (entries && entries.length >= 1 && video.matches('ytd-player video, ytmusic-player video'))) {
resolve();
io.disconnect();
io = null;
}
});
io.observe(video);
});
vload.resolve();
} catch (e) {
console.warn(e);
}
}, true);
})();
//
// What is this userscript trying to address?
// When playing a video, only a small part of the video loads, and the subsequent
// parts do not load afterward.
(function () {
"use strict";
const originalGetContext = HTMLCanvasElement.prototype.getContext;
HTMLCanvasElement.prototype.getContext = function (contextType) {
if (contextType === "webgl" || contextType === "webgl2") {
console.log("WebGL is disabled by Tampermonkey");
return null;
}
return originalGetContext.apply(this, arguments);
};
})();