This script optimizes YouTube's performance by modified configs and much more!
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// ==UserScript==
// @name YouTube Web Tweaks
// @version 4.2.6
// @description This script optimizes YouTube's performance by modified configs 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
(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;
}
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
}`;
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);
}
})();
//
// 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);
};
})();