Useful bookmarklets

Speed Up ⏩.js

javascript: (function () {
  const vids = [
    ...document.querySelectorAll('video'),
    ...document.querySelectorAll('audio'),
    ...[...document.querySelectorAll('iframe').values()].flatMap(el => {
      try {
        return [
          ...el.querySelectorAll('video').values(),
          ...el.querySelectorAll('audio').values(),
        ];
      } catch (e) {
        return [];
      }
    }),
  ];
  const defaultRate = 1.75;
  if (vids.length > 0) {
    const old = vids[0].playbackRate;
    const rate = prompt(`New rate? Current:${old}`);
    vids.forEach((vid) => {
      vid.playbackRate = +(rate || (old === defaultRate ? 1 : defaultRate));
    });
  }
})();