📸 IG Download bookmarklet

ig-download.js

/**
 * When on Instagram web, after clicking the image, a modal pops up.
 * Running this when the modal is open will work to grab the photo, 
 * which will be the last photo in the DOM.
 * If you get to an IG photo page and the modal is not open, this won't work.
 * To use as a bookmarklet, copy this code, create a new bookmark, & paste it after:
 *    javascript:
 */
(function () {
  const images = document.querySelectorAll('img');
  const imageCount = images.length;
  const enlargedImageIndex = imageCount - 1;
  const enlargedImage = images[enlargedImageIndex];
  const srcs = enlargedImage.getAttribute('srcset');
  const imgSrc = srcs.split(',')[2].split('?')[0];
  window.open(imgSrc);
})();