Bookmarklet to download all images on a page

image_downloader.js

;(function() {
  var images = [].slice.call(document.querySelectorAll('img'))
  try {
    images.forEach(function(img) {
      downloadImage(img)
    })
  } catch (e) {
      alert("Download failed.");
      console.log('Download failed.', e);
  }
  
  function downloadImage(img) {
    var link = document.createElement('a')
    link.setAttribute('href', img.src)
    link.setAttribute('download', '')
    link.click()
  }
}).call(window);

image_downloader.txt

javascript:;(function() {var images = [].slice.call(document.querySelectorAll('img'));try {images.forEach(function(img){downloadImage(img)})} catch (e) {alert('Download failed.');console.log('Download failed.', e)}function downloadImage(img) {var link = document.createElement('a');link.setAttribute('href', img.src);link.setAttribute('download', '');link.click()}}).call(window);