MarkDown

// ==UserScript==
// @name 🚫Disable Video and Audio Autoplay and Preload
// @namespace http://tampermonkey.net/
// @version 0.1
// @description Disable autoplay and preload for all videos and audios on the webpage
// @author Your Name
// @match *://*/*
// @run-at       document-end
// @grant none
// ==/UserScript==

(function() {
    'use strict';

    var videos = document.querySelectorAll('video');
    videos.forEach(function(video) {
        video.autoplay = false;
        video.preload = 'none';
    });

    var audios = document.querySelectorAll('audio');
    audios.forEach(function(audio) {
        audio.autoplay = false;
        audio.preload = 'none';
    });
})();