YouTube Custom Background

Replace YouTube background with custom tiled image + floating clouds + stars

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Userscripts to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install a user script manager extension to install this script.

(I already have a user script manager, let me install it!)

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You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

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// ==UserScript==
// @name         YouTube Custom Background
// @namespace    http://tampermonkey.net/
// @version      1.9
// @description  Replace YouTube background with custom tiled image + floating clouds + stars
// @author       $$
// @match        https://www.youtube.com/*
// @license      Copyright
// @icon         https://raw.githubusercontent.com/santosasarno-code/assets/refs/heads/main/pngegg.png
// @grant        GM_addStyle
// ==/UserScript==

(function () {
    'use strict';

    GM_addStyle(`
        @keyframes floatBG {
            0%   { transform: translateY(0px); }
            50%  { transform: translateY(40px); }
            100% { transform: translateY(0px); }
        }
        @keyframes floatCloudLeft {
            0%   { transform: translate(0px, 0px); }
            50%  { transform: translate(-20px, -10px); }
            100% { transform: translate(0px, 0px); }
        }
        @keyframes floatCloudRight {
            0%   { transform: translate(0px, 0px); }
            50%  { transform: translate(20px, -10px); }
            100% { transform: translate(0px, 0px); }
        }
        @keyframes floatStarLeft {
            0%   { transform: translate(0px, 0px) rotate(0deg); }
            50%  { transform: translate(-12px, -8px) rotate(20deg); }
            100% { transform: translate(0px, 0px) rotate(0deg); }
        }
        @keyframes floatStarRight {
            0%   { transform: translate(0px, 0px) rotate(0deg); }
            50%  { transform: translate(12px, -8px) rotate(-20deg); }
            100% { transform: translate(0px, 0px) rotate(0deg); }
        }

        /* === BASE === */
        html, body { background: transparent !important; }

        ytd-app {
            background: transparent !important;
            position: relative !important;
        }

        /* Tiled background */
        ytd-app::after {
            content: '' !important;
            position: fixed !important;
            inset: -60px !important;
            background-color: #ffb7c5 !important;
            background-image: url('https://raw.githubusercontent.com/santosasarno-code/assets/refs/heads/main/vecteezy_greet-cinnamoroll-from-sanrio_53071648.svg') !important;
            background-repeat: repeat !important;
            background-size: 500px auto !important;
            will-change: transform !important;
            animation: floatBG 6s ease-in-out infinite !important;
            z-index: -2 !important;
            pointer-events: none !important;
        }

        /* Dark overlay */
        ytd-app::before {
            content: '' !important;
            position: fixed !important;
            inset: 0 !important;
            background: rgba(0, 0, 0, 0.7) !important;
            z-index: -1 !important;
            pointer-events: none !important;
        }

        ytd-page-manager,
        ytd-browse,
        ytd-search,
        ytd-watch-flexy {
            background: transparent !important;
            position: relative !important;
            z-index: 1 !important;
        }

        /* === MASTHEAD === */
        #masthead-container,
        ytd-masthead {
            background: transparent !important;
            backdrop-filter: blur(12px) !important;
            -webkit-backdrop-filter: blur(12px) !important;
            border-bottom: 1px solid rgba(255, 255, 255, 0.15) !important;
            position: relative !important;
        }

        ytd-masthead #background,
        #frosted-glass { display: none !important; }

        /* === SEARCH BOX === */
        .ytSearchboxComponentInputBox,
        .ytSearchboxComponentInputBoxDark {
            background: rgba(255, 255, 255, 0.15) !important;
            backdrop-filter: blur(8px) !important;
            -webkit-backdrop-filter: blur(8px) !important;
            border-color: rgba(255, 255, 255, 0.25) !important;
        }

        .ytSearchboxComponentInput {
            background: transparent !important;
            color: white !important;
        }

        .ytSearchboxComponentSearchButton,
        .ytSearchboxComponentSearchButtonDark {
            background: rgba(255, 255, 255, 0.1) !important;
            backdrop-filter: blur(8px) !important;
        }

        /* === SEARCH SUGGESTIONS === */
        .ytSearchboxComponentSuggestionsContainer,
        .ytSearchboxComponentSuggestionsContainerDark {
            background: rgba(255, 255, 255, 0.25) !important;
            backdrop-filter: blur(32px) !important;
            -webkit-backdrop-filter: blur(32px) !important;
            border: 1px solid rgba(255, 255, 255, 0.2) !important;
            border-radius: 12px !important;
        }

        .ytSuggestionComponentSuggestion:hover,
        .ytSuggestionComponentHighlighted {
            background: rgba(255, 255, 255, 0.15) !important;
            border-radius: 8px !important;
        }

        .ytSuggestionComponentBold,
        .ytSuggestionComponentText * {
            color: white !important;
            font-weight: bold !important;
        }

        /* === CHIPS BAR === */
        ytd-feed-filter-chip-bar-renderer,
        ytd-rich-grid-renderer #header,
        #chips-wrapper,
        yt-chip-cloud-renderer {
            background: transparent !important;
            box-shadow: none !important;
            border-bottom: none !important;
            position: relative !important;
        }

        yt-chip-cloud-chip-renderer {
            background: rgba(255, 255, 255, 0.06) !important;
            backdrop-filter: blur(10px) !important;
            -webkit-backdrop-filter: blur(10px) !important;
            border: 1px solid rgba(255, 255, 255, 0.1) !important;
            border-radius: 8px !important;
        }

        #left-arrow, #right-arrow,
        #left-arrow-button, #right-arrow-button,
        ytd-feed-filter-chip-bar-renderer #left-arrow,
        ytd-feed-filter-chip-bar-renderer #right-arrow {
            background: transparent !important;
        }

        #left-arrow::before, #left-arrow::after,
        #right-arrow::before, #right-arrow::after,
        #left-arrow-button::before, #left-arrow-button::after,
        #right-arrow-button::before, #right-arrow-button::after,
        yt-chip-cloud-renderer::before, yt-chip-cloud-renderer::after {
            background: none !important;
            background-image: none !important;
            box-shadow: none !important;
            width: 0 !important;
            display: none !important;
        }

        /* === ACCOUNT MENU === */
        ytd-multi-page-menu-renderer {
            background: transparent !important;
            backdrop-filter: blur(12px) !important;
            -webkit-backdrop-filter: blur(12px) !important;
            border: 1px solid rgba(255, 255, 255, 0.15) !important;
            border-radius: 12px !important;
        }

        ytd-multi-page-menu-renderer #header,
        ytd-active-account-header-renderer,
        ytd-compact-link-renderer,
        ytd-toggle-theme-compact-link-renderer,
        ytd-simple-menu-header-renderer,
        yt-multi-page-menu-section-renderer {
            background: transparent !important;
        }

        yt-multi-page-menu-section-renderer {
            border-color: rgba(255, 255, 255, 0.1) !important;
        }

        ytd-multi-page-menu-renderer #submenu {
            background: rgba(255, 255, 255, 0.1) !important;
            backdrop-filter: blur(12px) !important;
            -webkit-backdrop-filter: blur(12px) !important;
            border-radius: 12px !important;
        }

        ytd-compact-link-renderer tp-yt-paper-item:hover,
        ytd-toggle-theme-compact-link-renderer:hover {
            background: rgba(255, 255, 255, 0.15) !important;
            border-radius: 8px !important;
        }

        /* === SIDEBAR GUIDE === */
        tp-yt-app-drawer {
            --app-drawer-background-color: transparent !important;
        }

        tp-yt-app-drawer #contentContainer {
            background: transparent !important;
            backdrop-filter: blur(12px) !important;
            -webkit-backdrop-filter: blur(12px) !important;
            border: 1px solid rgba(255, 255, 255, 0.2) !important;
            border-radius: 8px !important;
        }

        #guide-wrapper,
        #guide-content,
        #guide-content #header,
        ytd-guide-renderer,
        ytd-guide-section-renderer {
            background: transparent !important;
        }

        ytd-guide-entry-renderer tp-yt-paper-item:hover {
            background: rgba(255, 255, 255, 0.15) !important;
            border-radius: 8px !important;
        }

        /* === Nuclear fix — target semua kemungkinan === */
        ytd-feed-filter-chip-bar-renderer,
        ytd-tabbed-page-header,
        ytd-tabbed-page-header *,
        ytd-section-list-renderer #header,
        ytd-section-list-renderer > #header,
        #header.ytd-section-list-renderer,
        ytd-item-section-renderer #header,
        .ytd-tabbed-page-header {
            background: transparent !important;
            background-color: transparent !important;
            background-image: none !important;
        }

        /* === CLOUDS & STARS === */
        .yt-bg-cloud,
        .yt-bg-star {
            position: fixed !important;
            pointer-events: none !important;
            will-change: transform !important;
            animation-timing-function: ease-in-out !important;
            animation-iteration-count: infinite !important;
        }
        .yt-bg-cloud { z-index: 0 !important; opacity: 0.45 !important; }
        .yt-bg-star  { z-index: 0 !important; opacity: 0.85 !important; }
    `);

    const CLOUD_URLS = [
        'https://raw.githubusercontent.com/santosasarno-code/assets/refs/heads/main/cloud-01.svg',
        'https://raw.githubusercontent.com/santosasarno-code/assets/refs/heads/main/cloud-02.svg',
        'https://raw.githubusercontent.com/santosasarno-code/assets/refs/heads/main/cloud-03.svg',
        'https://raw.githubusercontent.com/santosasarno-code/assets/refs/heads/main/cloud-04.svg',
        'https://raw.githubusercontent.com/santosasarno-code/assets/refs/heads/main/cloud-05.svg',
        'https://raw.githubusercontent.com/santosasarno-code/assets/refs/heads/main/cloud-06.svg',
    ];

    const STAR_URLS = [
        'https://raw.githubusercontent.com/santosasarno-code/assets/refs/heads/main/star-01.svg',
        'https://raw.githubusercontent.com/santosasarno-code/assets/refs/heads/main/star-02.svg',
        'https://raw.githubusercontent.com/santosasarno-code/assets/refs/heads/main/star-03.svg',
        'https://raw.githubusercontent.com/santosasarno-code/assets/refs/heads/main/star-04.svg',
    ];

    const CLOUD_COUNT = 12;
    const STAR_COUNT = 15;

    function rand(min, max) { return Math.random() * (max - min) + min; }

    function spawnElements() {
        if (document.querySelector('.yt-bg-cloud')) return;
        const fragment = document.createDocumentFragment();

        for (let i = 0; i < CLOUD_COUNT; i++) {
            const img = document.createElement('img');
            img.src = CLOUD_URLS[Math.floor(Math.random() * CLOUD_URLS.length)];
            img.className = 'yt-bg-cloud';
            img.style.cssText = `width:${rand(100,200)}px;left:${rand(0,95)}vw;top:${rand(0,90)}vh;animation-duration:${rand(4,9)}s;animation-delay:-${rand(0,5)}s;animation-name:${Math.random()>.5?'floatCloudLeft':'floatCloudRight'};`;
            fragment.appendChild(img);
        }

        for (let i = 0; i < STAR_COUNT; i++) {
            const img = document.createElement('img');
            img.src = STAR_URLS[Math.floor(Math.random() * STAR_URLS.length)];
            img.className = 'yt-bg-star';
            img.style.cssText = `width:${rand(20,55)}px;left:${rand(0,97)}vw;top:${rand(0,90)}vh;animation-duration:${rand(3,7)}s;animation-delay:-${rand(0,6)}s;animation-name:${Math.random()>.5?'floatStarLeft':'floatStarRight'};`;
            fragment.appendChild(img);
        }

        document.body.appendChild(fragment);
    }

    function fixMasthead() {
        const bg = document.querySelector('ytd-masthead #background');
        if (bg) bg.style.setProperty('display', 'none', 'important');

        const frosted = document.querySelector('#frosted-glass');
        if (frosted) frosted.style.setProperty('display', 'none', 'important');

        const masthead = document.querySelector('#masthead-container');
        if (!masthead) return false;

        masthead.style.setProperty('background', 'rgba(255,255,255,0.1)', 'important');
        masthead.style.setProperty('backdrop-filter', 'blur(12px)', 'important');
        masthead.style.setProperty('-webkit-backdrop-filter', 'blur(12px)', 'important');
        return true;
    }

    function init() {
        spawnElements();

        let debounceTimer = null;
        let mastheadFixed = false;

        const observer = new MutationObserver(() => {
            if (mastheadFixed) return;
            clearTimeout(debounceTimer);
            debounceTimer = setTimeout(() => {
                mastheadFixed = fixMasthead();
                if (mastheadFixed) {
                    observer.disconnect();
                    // Watch hanya masthead container setelah fixed
                    const masthead = document.querySelector('#masthead-container');
                    if (masthead) observer.observe(masthead, { attributes: true, attributeFilter: ['style'] });
                }
            }, 500);
        });

        observer.observe(document.body, { childList: true, subtree: true });
        fixMasthead();
    }

    if (document.body) {
        init();
    } else {
        window.addEventListener('DOMContentLoaded', init);
    }

})();