// ==UserScript==
// @name YT CPU Enhancer
// @version 1.1
// @description Remove no. of notifications, CSS tweaks
// @author TZ Shuhag
// @license MIT
// @match *://www.youtube-nocookie.com/*
// @match *://www.youtube.com/*
// @match *://m.youtube.com/*
// @namespace https://greasyfork.org/en/users/1495563
// @icon https://www.youtube.com/favicon.ico
// @run-at document-idle
// @grant none
// ==/UserScript==
// Disable Animations, Ambient Mode and other UI tweaks
"use strict";
// --- Flags to assign to yt.config_.EXPERIMENT_FLAGS ---
const flagsToAssign = {
// Disable animated features (except for sub/like buttons)
web_animated_actions: false,
web_animated_like: false,
web_animated_like_lazy_load: false,
smartimation_background: false,
// Disable ambient lighting / cinematic effects
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,
// More tweaks
kevlar_refresh_on_theme_change: false
};
// Safe helper to get EXPERIMENT_FLAGS (works even if optional chaining unsupported)
function getExpFlags() {
try {
// prefer optional chaining if available
// eslint-disable-next-line no-undef
return (window.yt && window.yt.config_ && window.yt.config_.EXPERIMENT_FLAGS) || (window.yt && window.yt.config_ && window.yt.config_.EXPERIMENT_FLAGS);
} catch (e) {
return undefined;
}
}
const updateFlags = () => {
const expFlags = getExpFlags();
if (!expFlags) return;
try {
Object.assign(expFlags, flagsToAssign);
} catch (e) {
// If assignment fails, ignore - we tried our best.
}
};
// Apply flags immediately and whenever DOM mutates
updateFlags();
const mutationObserver = new MutationObserver(updateFlags);
mutationObserver.observe(document, { subtree: true, childList: true });
// --- Hide notification count in the page title (safely) ---
(function overrideDocumentTitle() {
// Find a prototype that actually has a 'title' property descriptor
const protoCandidates = [Document.prototype, (typeof HTMLDocument !== "undefined" ? HTMLDocument.prototype : null), Object.getPrototypeOf(document)];
let originalTitleDescriptor = null;
for (const p of protoCandidates) {
if (!p) continue;
originalTitleDescriptor = Object.getOwnPropertyDescriptor(p, 'title');
if (originalTitleDescriptor) break;
}
// Fallback: if still not found, try to use the title element observer technique below
if (!originalTitleDescriptor) {
// Fallback approach: observe <title> element and strip leading "(N) "
const titleEl = document.querySelector('title');
if (titleEl) {
const safeObserver = new MutationObserver(() => {
if (!titleEl.textContent) return;
titleEl.textContent = String(titleEl.textContent).replace(/^\(\d+\)\s?/, '');
});
safeObserver.observe(titleEl, { childList: true, characterData: true, subtree: true });
}
return;
}
// Only override if descriptor has at least one accessor or is configurable
try {
Object.defineProperty(document, 'title', {
get: function() {
if (originalTitleDescriptor.get) {
return originalTitleDescriptor.get.call(this);
}
// fallback to reading <title>
return (document.querySelector('title') || {}).textContent || '';
},
set: function(newValue) {
const str = String(newValue);
const interceptedValue = str.replace(/^\(\d+\)\s?/, "");
if (originalTitleDescriptor.set) {
originalTitleDescriptor.set.call(this, interceptedValue);
} else {
const titleEl = document.querySelector('title');
if (titleEl) titleEl.textContent = interceptedValue;
}
},
configurable: true,
enumerable: true
});
} catch (err) {
// If defining property failed (non-configurable), fallback to observing <title>
const titleEl = document.querySelector('title');
if (titleEl) {
const safeObserver = new MutationObserver(() => {
if (!titleEl.textContent) return;
titleEl.textContent = String(titleEl.textContent).replace(/^\(\d+\)\s?/, '');
});
safeObserver.observe(titleEl, { childList: true, characterData: true, subtree: true });
}
}
})();
// Small CSS injection to hide the notification badge (redundant with title but helps visuals)
(function() {
const css1 = '.yt-spec-icon-badge-shape--type-notification .yt-spec-icon-badge-shape__badge{display:none !important;}';
if (typeof GM_addStyle !== "undefined") {
try { GM_addStyle(css1); return; } catch (e) {}
}
const s = document.createElement('style');
s.appendChild(document.createTextNode(css1));
(document.head || document.documentElement).appendChild(s);
})();
// Big CSS block for many UI tweaks
(function() {
let css = `
/* Topbar tweaks */
ytm-mobile-topbar-renderer.frosted-glass,
ytm-pivot-bar-renderer.frosted-glass,
ytm-feed-filter-chip-bar-renderer.frosted-glass,
#background.ytd-masthead, #frosted-glass.ytd-app,
#left-arrow-button.ytd-feed-filter-chip-bar-renderer,
#right-arrow-button.ytd-feed-filter-chip-bar-renderer {
background: var(--yt-spec-base-background) !important;
backdrop-filter: none !important;
-webkit-backdrop-filter: none !important
}
#left-arrow.ytd-feed-filter-chip-bar-renderer:after {
background: linear-gradient(to right, var(--yt-spec-base-background) 20%, rgba(255, 255, 255, 0) 80%) !important
}
#right-arrow.ytd-feed-filter-chip-bar-renderer:before {
background: linear-gradient(to left, var(--yt-spec-base-background) 20%, rgba(255, 255, 255, 0) 80%) !important
}
ytd-button-renderer.ytd-feed-filter-chip-bar-renderer {
background: transparent !important
}
div#end.style-scope.ytd-masthead .yt-spec-icon-badge-shape--style-overlay.yt-spec-icon-badge-shape--type-cart-refresh .yt-spec-icon-badge-shape__badge {
color: #fff !important
}
.yt-spec-icon-badge-shape--type-notification .yt-spec-icon-badge-shape__badge {
display: none !important
}
/* Player tweaks */
#cinematics.ytd-watch-flexy {
display: none !important
}
.ytp-gradient-top, .ytp-gradient-bottom {
height: 61px !important;
padding: 0
}
.ytp-small-mode .ytp-gradient-top, .ytp-small-mode .ytp-gradient-bottom {
height: 50px !important
}
.ytp-big-mode .ytp-gradient-top, .ytp-big-mode .ytp-gradient-bottom {
height: 0 !important
}
.ytp-gradient-top {
background: linear-gradient(to bottom, #0009, #0000) !important
}
.ytp-gradient-bottom {
background: linear-gradient(to top, #0009, #0000) !important
}
/* Remove minimal annoyances and other tweaks */
ytd-ad-slot-renderer,
ytm-ad-slot-renderer,
ad-slot-renderer,
ytd-promoted-video-renderer,
ytm-promoted-video-renderer,
ytd-promoted-sparkles-web-renderer,
ytm-promoted-sparkles-web-renderer,
ytd-text-image-no-button-layout-renderer,
ytm-text-image-no-button-layout-renderer,
ytd-merch-shelf-renderer,
ytd-compact-movie-renderer,
ytd-mealbear-promo-renderer,
ytd-video-quality-promo-renderer,
tp-yt-iron-overlay-backdrop.opened {
display: none !important
}
.ytd-ghost-grid-renderer,
.info-skeleton,
.meta-skeleton,
#ghost-cards,
#ghost-comment-section,
#related-skeleton {
display: none !important
}
ytd-watch-metadata.ytd-watch-flexy {
padding-bottom: 36px !important
}`;
if (typeof GM_addStyle !== "undefined") {
try { GM_addStyle(css); return; } catch (e) {}
}
let styleNode = document.createElement("style");
styleNode.appendChild(document.createTextNode(css));
(document.querySelector("head") || document.documentElement).appendChild(styleNode);
})();
