Will speak any select text from page #bookmarklet

speak-selected-text.js

javascript: void ((async () => {
  /* More bookmarklets at https://gist.github.com/iamandrewluca/61feacf07bc4f2f50e70f986c2e9b2d2 */
  let interval = 500;
  const intervalId = setInterval(() => {
    interval += 500;

    if (interval > 5000) { return; }

    if (window.speechSynthesis.getVoices().length !== 0) {
      clearInterval(intervalId);
      const text = window.getSelection().toString();
      const utterance = new SpeechSynthesisUtterance(text);
      speechSynthesis.speak(utterance);
    }
  }, interval);
})());