// ==UserScript==
// @name         Enlarge YouTube Comment Section Profile Pictures (HD Version with Caching)
// @namespace    typpi.online
// @version      2.2
// @description  Enlarges YouTube comment profile pictures on mouse over, shows HD version, Caches HD images for faster display using Tampermonkey caching.
// @author       Nick2bad4u
// @match        https://www.youtube.com/*
// @grant        GM_setValue
// @grant        GM_getValue
// @grant        GM_addStyle
// @icon         https://www.google.com/s2/favicons?sz=64&domain=youtube.com
// @license      UnLicense
// @tag          youtube
// ==/UserScript==
(function () {
'use strict';
let debounceTimeout;
const CACHE_TTL_MS = 24 * 60 * 60 * 1000; // 24 hours in milliseconds
const preloadedImages = new Map();
// Load cache from Tampermonkey storage
function loadCache() {
const cache = GM_getValue('profilePicCache', {});
const now = Date.now();
// Clear out expired cache entries
Object.keys(cache).forEach((key) => {
if (now - cache[key].timestamp > CACHE_TTL_MS) {
delete cache[key]; // Remove expired entry
}
});
GM_setValue('profilePicCache', cache); // Update cache after removing expired entries
return cache;
}
// Save cache to Tampermonkey storage
function saveCache(cache) {
GM_setValue('profilePicCache', cache);
}
let cache = loadCache(); // Load the cache once when the script runs
// Preload HD image
function preloadHDImage(src) {
const hdSrc = src.replace(/=s(88|48)-c/, '=s800-c'); // Adjust as needed for HD
if (!preloadedImages.has(hdSrc)) {
if (cache[hdSrc]) {
// If in persistent cache, load directly from cache
preloadedImages.set(hdSrc, cache[hdSrc].url);
} else {
// Preload HD image and store in cache
const img = new Image();
img.src = hdSrc;
preloadedImages.set(hdSrc, hdSrc); // Store in memory
cache[hdSrc] = {
url: hdSrc,
timestamp: Date.now(),
}; // Cache with timestamp
saveCache(cache); // Save the updated cache
}
}
}
// Function to enlarge profile pictures, show HD image, add black outline, and shift position
function enlargeProfilePic(event) {
clearTimeout(debounceTimeout);
const img = event.target;
// If the image is already enlarged, skip further processing
if (img.dataset.enlarged === 'true') return;
debounceTimeout = setTimeout(() => {
const originalSrc = img.src;
const hdSrc = originalSrc.replace(/=s(88|48)-c/, '=s800-c'); // Use HD version
img.dataset.originalSrc = originalSrc; // Store the original src
img.src = preloadedImages.get(hdSrc) || hdSrc;
// Get the position of the original image
const rect = img.getBoundingClientRect();
// Set fixed size, position relative to the original image, and make it a circle
img.style.width = '260px'; // Adjust width as needed
img.style.height = '260px'; // Adjust height as needed
img.style.borderRadius = '50%'; // Make the image circular
img.style.position = 'fixed';
img.style.top = `${rect.top - 20}px`; // Adjust vertical position as needed
img.style.left = `${rect.left + 70}px`; // Offset to the right
img.style.border = '2px solid black';
img.style.zIndex = '9999';
img.dataset.enlarged = 'true'; // Mark as enlarged to prevent re-enlarging
// Reset after 3 seconds
setTimeout(() => {
resetProfilePic(img);
}, 3000);
}, 100);
}
// Function to reset profile pictures to original size and source
function resetProfilePic(img) {
img.src = img.dataset.originalSrc || img.src; // Restore the original src if it was replaced
img.style.width = ''; // Clear custom width
img.style.height = ''; // Clear custom height
img.style.borderRadius = ''; // Clear circular style
img.style.position = ''; // Reset position to default
img.style.top = ''; // Clear top position
img.style.left = ''; // Clear left position
img.style.border = 'none'; // Remove any border
img.style.zIndex = 'auto'; // Reset z-index
img.style.transform = ''; // Remove any transform applied
delete img.dataset.enlarged; // Remove the enlarged flag
}
// Add event listeners to profile pictures
function addEventListeners() {
const profilePics = document.querySelectorAll(
'.style-scope yt-img-shadow img:not(#avatar-btn > yt-img-shadow img)',
);
profilePics.forEach((pic) => {
preloadHDImage(pic.src); // Preload HD image
pic.addEventListener('mouseover', enlargeProfilePic);
});
}
// Observe changes in the comments section to dynamically add event listeners
const observer = new MutationObserver(() => {
addEventListeners();
});
observer.observe(document.body, {
childList: true,
subtree: true,
});
// Initial call to add event listeners
addEventListeners();
})();