Toggle the controls on a video player for easier screenshots.

toggle-player-controls.user.js

// ==UserScript==
// @name     Toggle Video Controls (f1)
// @version  1
// @include  https://archive.org/*
// @include  https://www.youtube.com/*
// @grant    none
// ==/UserScript==

// LICENSE: CC0 1.0
// Comments with support for more video players are encouraged, if you want to help out

if (window.location.host == "archive.org") {
  document.addEventListener("keydown", e => {
    if (e.key == "F1") {
      document.querySelector('.jw-controls').classList.toggle('hidden');
      document.querySelector('.jw-controls-backdrop').classList.toggle('hidden')
    }
  });
} else if (window.location.host == "www.youtube.com") {
  const styles = document.createElement("style");
  const className = "porglezomp--hide-video-controls";
  styles.innerText = `
	.${className} > * { display: none; }
	.${className} > .html5-video-container,
  .${className} > #ytp-caption-window-container { display: block; }
`;
  document.body.appendChild(styles);

  document.addEventListener("keydown", e => {
    if (e.key == "F1") {
    	document.querySelector("#movie_player").classList.toggle(className);
    }
  });
}

console.log("UserScript: Installed video control toggle");