A userscript to maximize height of youtube media player, so you can enjoy almost fullscreen-like video.
// ==UserScript== // @name Youtube Max Height // @namespace Youtube Max Height // @match https://*.youtube.com/* // @grant none // @version 0.9.1 // @author popiazaza // @home-url https://github.com/popiazaza/Youtube-Max-Video-Height // @homepageURL https://github.com/popiazaza/Youtube-Max-Video-Height // @description A userscript to maximize height of youtube media player, so you can enjoy almost fullscreen-like video. // @grant GM_addStyle // @license MIT // ==/UserScript== GM_addStyle(` ytd-watch-flexy[theater] #player-wide-container.ytd-watch-flexy, ytd-watch-flexy[fullscreen] #player-wide-container.ytd-watch-flexy, ytd-watch-flexy[full-bleed-player] #full-bleed-container.ytd-watch-flexy, ytd-watch-flexy[full-bleed-player] #full-bleed-container.ytd-watch-flexy { max-height: calc(100vh); } #masthead-container.ytd-app { opacity: 0; } #page-manager.ytd-app { margin-top: 0; } `); let pinnedTopBar = false; let timeoutMouseout; (function () { const mastheadContainer = document.getElementById("masthead-container"); const pageManager = document.getElementById("page-manager"); mastheadContainer.style.transition = "opacity 0.2s"; mastheadContainer.style.opacity = 0; pageManager.style.marginTop = 0; document.onkeydown = hotkeys; mastheadContainer.addEventListener( "mouseover", function () { clearTimeout(timeoutMouseout); toggleHeader(1); }, true ); mastheadContainer.addEventListener( "mouseout", function () { timeoutMouseout = setTimeout(toggleHeader, 500, 2); }, true ); let previousUrl; const observer = new MutationObserver(() => { if (window.location.href !== previousUrl) { if (window.location.pathname.startsWith("/watch")) { pinnedTopBar = false; toggleHeader(2); } else { pinnedTopBar = true; toggleHeader(1); } previousUrl = window.location.href; } }); const config = { subtree: true, childList: true }; observer.observe(document, config); })(); function toggleHeader(mouseover = 0) { const mastheadContainer = document.getElementById("masthead-container"); const pageManager = document.getElementById("page-manager"); if (mouseover === 1 || mastheadContainer.style.opacity === 0) { mastheadContainer.style.opacity = 1; pageManager.style.marginTop = "var(--ytd-masthead-height,var(--ytd-toolbar-height))"; } else if ( !pinnedTopBar && (mouseover === 2 || mastheadContainer.style.opacity === 1) ) { mastheadContainer.style.opacity = 0; pageManager.style.marginTop = 0; for (let element of Array.from(document.querySelectorAll(".gstl_50"))) { element.style.display = "none"; } } } function hotkeys(e) { if (e.code === "Tab") { document.getElementById("guide-button").click(); } else if (e.code === "Escape") { pinnedTopBar = !pinnedTopBar; if (pinnedTopBar) { toggleHeader(1); } else { toggleHeader(2); } } }