Make the video and images opacity lower.
// ==UserScript==
// @name Youtube: Hide Video
// @name:zh-TW Youtube 隱藏影片
// @name:ja Youtube ビデオを隠す
// @name:ko Youtube 비디오 숨기기
// @name:ru Youtube Скрыть видео
// @version 1.0.7
// @description Make the video and images opacity lower.
// @description:zh-TW 使影片較為透明。
// @description:zh-CN 使视频较为透明。
// @description:ja ビデオと画像の不透明度を低くします。
// @description:ko 비디오 및 이미지의 불투명도를 낮추십시오.
// @description:ru Уменьшите непрозрачность видео и изображений.
// @author Hayao-Gai
// @namespace https://github.com/HayaoGai
// @icon https://www.webwise.ie/wp-content/uploads/2015/10/youtube.png
// @match https://www.youtube.com/*
// @grant GM_getValue
// @grant GM_setValue
// ==/UserScript==
/* jshint esversion: 6 */
(function() {
'use strict'
// icons made by https://www.flaticon.com/authors/pixel-perfect
const on1 = `<svg width="35" height="35" viewBox="0 -107 512 512"><path d="m0 149.332031c0 82.347657 67.007812 149.335938 149.332031 149.335938h213.335938c82.324219 0 149.332031-66.988281 149.332031-149.335938 0-82.34375-67.007812-149.332031-149.332031-149.332031h-213.335938c-82.324219 0-149.332031 66.988281-149.332031 149.332031zm277.332031 0c0-47.058593 38.273438-85.332031 85.335938-85.332031 47.058593 0 85.332031 38.273438 85.332031 85.332031 0 47.0625-38.273438 85.335938-85.332031 85.335938-47.0625 0-85.335938-38.273438-85.335938-85.335938zm0 0"/></svg>`
const on2 = `<svg width="35" height="35" viewBox="0 -107 512 512"><path d="m362.667969 298.667969h-213.335938c-82.34375 0-149.332031-67.007813-149.332031-149.335938 0-82.324219 66.988281-149.332031 149.332031-149.332031h213.335938c82.34375 0 149.332031 67.007812 149.332031 149.332031 0 82.328125-66.988281 149.335938-149.332031 149.335938zm-213.335938-266.667969c-64.703125 0-117.332031 52.652344-117.332031 117.332031 0 64.683594 52.628906 117.335938 117.332031 117.335938h213.335938c64.703125 0 117.332031-52.652344 117.332031-117.335938 0-64.679687-52.628906-117.332031-117.332031-117.332031zm0 0"/><path d="m362.667969 234.667969c-47.0625 0-85.335938-38.273438-85.335938-85.335938 0-47.058593 38.273438-85.332031 85.335938-85.332031 47.058593 0 85.332031 38.273438 85.332031 85.332031 0 47.0625-38.273438 85.335938-85.332031 85.335938zm0-138.667969c-29.398438 0-53.335938 23.914062-53.335938 53.332031 0 29.421875 23.9375 53.335938 53.335938 53.335938 29.394531 0 53.332031-23.914063 53.332031-53.335938 0-29.417969-23.9375-53.332031-53.332031-53.332031zm0 0"/></svg>`
const off1 = `<svg width="35" height="35" viewBox="0 -107 512 512"><path d="m362.667969 298.667969h-213.335938c-82.34375 0-149.332031-67.007813-149.332031-149.335938 0-82.324219 66.988281-149.332031 149.332031-149.332031h213.335938c82.34375 0 149.332031 67.007812 149.332031 149.332031 0 82.328125-66.988281 149.335938-149.332031 149.335938zm-213.335938-266.667969c-64.703125 0-117.332031 52.652344-117.332031 117.332031 0 64.683594 52.628906 117.335938 117.332031 117.335938h213.335938c64.703125 0 117.332031-52.652344 117.332031-117.335938 0-64.679687-52.628906-117.332031-117.332031-117.332031zm0 0"/><path d="m149.332031 234.667969c-47.058593 0-85.332031-38.273438-85.332031-85.335938 0-47.058593 38.273438-85.332031 85.332031-85.332031 47.0625 0 85.335938 38.273438 85.335938 85.332031 0 47.0625-38.273438 85.335938-85.335938 85.335938zm0-138.667969c-29.394531 0-53.332031 23.914062-53.332031 53.332031 0 29.421875 23.9375 53.335938 53.332031 53.335938 29.398438 0 53.335938-23.914063 53.335938-53.335938 0-29.417969-23.9375-53.332031-53.335938-53.332031zm0 0"/></svg>`
const off2 = `<svg width="35" height="35" viewBox="0 -107 512 512"><path d="m362.667969 0h-213.335938c-82.324219 0-149.332031 66.988281-149.332031 149.332031 0 82.347657 67.007812 149.335938 149.332031 149.335938h213.335938c82.324219 0 149.332031-66.988281 149.332031-149.335938 0-82.34375-67.007812-149.332031-149.332031-149.332031zm-213.335938 234.667969c-47.058593 0-85.332031-38.273438-85.332031-85.335938 0-47.058593 38.273438-85.332031 85.332031-85.332031 47.0625 0 85.335938 38.273438 85.335938 85.332031 0 47.0625-38.273438 85.335938-85.335938 85.335938zm0 0"/></svg>`
const textStyle = `
.switch {
display: block;
margin: auto 30px;
cursor: pointer;
}
.switch[dark="true"] {
fill: white;
}
.hide-set {
transition: opacity 0.3s;
opacity: 0.1;
}`
const targets = [
"img",
"video",
"#background",
".ytp-videowall-still-image"
]
let updating = false
let href = document.location.href
css()
observation()
init(10)
window.addEventListener("scroll", update, true)
function init(times) {
for (let i = 0; i < times; i++) {
// switch
setTimeout(addButton, 500 * i)
// hide targets
for (const target of targets) {
setTimeout(() => hideTarget(`${target}:not(.hide-set)`), 500 * i)
}
}
// show targets
showTarget()
}
function addButton() {
// check exist
if (!!document.querySelector(".switch")) return
// get parent
const logoPanel = document.querySelector("ytd-topbar-logo-renderer#logo")
if (!logoPanel) return
// add button
const button = document.createElement("span")
button.classList.add("switch")
button.innerHTML = switchSVG()
button.addEventListener("click", onClick)
logoPanel.parentNode.insertBefore(button, logoPanel.nextSibling)
// add "dark" attribute
const attDark = document.createAttribute("dark")
attDark.value = isDark()
button.setAttributeNode(attDark)
}
function isDark() {
return document.querySelector("html").getAttribute("dark") === ""
}
function switchSVG() {
const on = (!isDark() && !window.location.href.includes("watch?v=")) ? on1 : on2
const off = (!isDark() && !window.location.href.includes("watch?v=")) ? off1 : off2
return getToggle() ? on : off
}
function onClick() {
GM_setValue("switch", !getToggle())
this.innerHTML = switchSVG()
init(3)
}
function hideTarget(target) {
// check toggle
if (!getToggle()) return
// hide target
document.querySelectorAll(target).forEach(t => {
t.classList.add("hide-set")
})
}
function getToggle() {
return GM_getValue("switch", true)
}
function showTarget() {
// check toggle
if (getToggle()) return
// show targets
document.querySelectorAll(".hide-set").forEach(target => {
target.classList.remove("hide-set")
})
}
function update() {
if (updating) return
updating = true
init(3)
setTimeout(() => { updating = false }, 1000)
}
function css() {
const style = document.createElement("style")
style.type = "text/css"
style.innerHTML = textStyle
document.head.appendChild(style)
}
function observation() {
const observer = new MutationObserver(mutations => {
mutations.forEach(() => {
if (href != document.location.href) {
href = document.location.href
init(10)
}
})
})
const target = document.querySelector("body")
const config = { childList: true, subtree: true }
observer.observe(target, config)
}
})()