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The best Youtube Downloader, download video MP4, AVI, MP3, HD, 1080P, 2K, 4k & 8K

Download any video and music (audio) from Youtube, Twitter, Vimeo, Facebook, Instagram, SoundCloud, Dailymotion, Liveleak, Break, Imgur, Mashable, Reddit, 1TV, 9gag, VK, TED, youku, bilibili, IMDb, ESPN, Flickr, Bandcamp, pornhub, 9gag, VK.com, ok.ru, tv.com and 10,000 more sites for free. Also support to download subtitles. Free, fast and easy to use. No need to install any annoying softwares. Supporting MP4, WEBM, AVI, 3GP, FLV, H64, ACC, FLA, MP3, M4A, 8K, 6K,4K, 2K, 1080, 720, 480, 360, etc.

// ==UserScript==
// @name        The best Youtube Downloader, download video MP4, AVI, MP3, HD, 1080P, 2K, 4k & 8K
// @namespace   https://distillvideo.com/
// @version     5.2
// @date        2019-10-09
// @description Download any video and music (audio) from Youtube, Twitter, Vimeo, Facebook, Instagram, SoundCloud, Dailymotion, Liveleak, Break, Imgur, Mashable, Reddit, 1TV, 9gag, VK, TED, youku, bilibili, IMDb, ESPN, Flickr, Bandcamp, pornhub, 9gag, VK.com, ok.ru, tv.com and 10,000 more sites for free. Also support to download subtitles. Free, fast and easy to use. No need to install any annoying softwares. Supporting MP4, WEBM, AVI, 3GP, FLV, H64, ACC, FLA, MP3, M4A, 8K, 6K,4K, 2K, 1080, 720, 480, 360, etc.
// @author      DistillVideo.com
// @copyright   2018-2019, DistillVideo.com
// @homepage    https://distillvideo.com/extension#extension
// @compatible chrome
// @compatible firefox
// @compatible opera
// @compatible safari
// @license MIT https://opensource.org/licenses/MIT
// @match          *://*.youtube.com/*
// ==/UserScript==

(function() {
    'use strict';

    if (document.getElementById("polymer-app") || document.getElementById("masthead") || window.Polymer) {
    setInterval(function() {
        if (window.location.href.indexOf("watch?v=") < 0) {
            return false;
        }
        if (document.getElementById("count") && document.getElementById("distillvideo") === null) {
            Addytpolymer();
        }
    }, 100);
} else {
    setInterval(function() {
        if (window.location.href.indexOf("watch?v=") < 0) {
            return false;
        }
        if (document.getElementById("watch7-subscription-container") && document.getElementById("distillvideo") === null) {
            AddhtmlDV();
        }
    }, 100);
}

function AddhtmlDV() {
    if (document.getElementById("watch7-subscription-container")) {
        var wrap = document.getElementById('watch7-subscription-container');
        var button = "<div id='distillvideo' style='display: inline-block; margin-left: 10px; vertical-align: middle;'>";
        button += "<a href=\"https://distillvideo.com/?url=" + window.location.href + "\" title=\"Download this video\" target=\"_blank\"" +
            "style=\"display: inline-block; font-size: inherit; height: 22px; border: 1px solid rgb(0, 183, 90); border-radius: 3px; padding-left: 28px; cursor: pointer; vertical-align: middle; position: relative; line-height: 22px; text-decoration: none; z-index: 1; color: rgb(255, 255, 255);\">";
        button += "<i style=\"position: absolute; display: inline-block; left: 6px; top: 3px; background-image: url(data:image/svg+xml;base64,PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTgiPz48c3ZnIHhtbG5zOmRjPSJodHRwOi8vcHVybC5vcmcvZGMvZWxlbWVudHMvMS4xLyIgeG1sbnM6Y2M9Imh0dHA6Ly9jcmVhdGl2ZWNvbW1vbnMub3JnL25zIyIgeG1sbnM6cmRmPSJodHRwOi8vd3d3LnczLm9yZy8xOTk5LzAyLzIyLXJkZi1zeW50YXgtbnMjIiB4bWxuczpzdmc9Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHZlcnNpb249IjEuMSIgd2lkdGg9IjE2IiBoZWlnaHQ9IjE2IiB2aWV3Qm94PSIwIDAgMTYgMTYiIGlkPSJzdmcyIiB4bWw6c3BhY2U9InByZXNlcnZlIj48cGF0aCBkPSJNIDQsMCA0LDggMCw4IDgsMTYgMTYsOCAxMiw4IDEyLDAgNCwwIHoiIGZpbGw9IiNmZmZmZmYiIC8+PC9zdmc+); background-size: 12px; background-repeat: no-repeat; background-position: center center; width: 16px; height: 16px;\"></i>";
        button += "<span style=\"padding-right: 12px;\">Download</span></a></div>";
        var style = "<style>#distillvideo button::-moz-focus-inner{padding:0;margin:0}#distillvideo a{background-color:#15388c}#distillvideo a:hover{background-color:#E91E63}#distillvideo a:active{background-color:rgb(0, 151, 74)}</style>";
        var tmp = wrap.innerHTML;
        wrap.innerHTML = tmp + button + style;
    }
}

function Addytpolymer() {
    var buttonDiv = document.createElement("span");
    buttonDiv.style.width = "100%";
    buttonDiv.id = "distillvideo";
    var addButton = document.createElement("a");
    addButton.appendChild(document.createTextNode("Download Video"));
    addButton.style.width = "100%";
    addButton.style.backgroundColor = "#15388c";
    addButton.style.color = "white";
    addButton.style.textAlign = "center";
    addButton.style.padding = "5px 10px";
    addButton.style.margin = "0px 10px";
    addButton.style.fontSize = "14px";
    addButton.style.border = "0";
    addButton.style.cursor = "pointer";
    addButton.style.borderRadius = "2px";
    addButton.style.fontFamily = "Roboto, Arial, sans-serif";
    addButton.style.textDecoration = "none";
    addButton.href = "https://distillvideo.com/?url=" + window.location.href;
    addButton.target = "_blank";
    buttonDiv.appendChild(addButton);
    var targetElement = document.querySelectorAll("[id='count']");
    for (var i = 0; i < targetElement.length; i++) {
        if (targetElement[i].className.indexOf("ytd-video-primary-info-renderer") > -1) {
            targetElement[i].appendChild(buttonDiv);
        }
    }
}


})();