if you're on a page fulla emojis, lazyload them all and this will download them all [will take some time]

download-all-emojipedia-images.js

// WARNING: this will take some time, chrome might hiccup, you might be prompted in the URL bar to run unsafe scripts
function saveFile(url, filename) {
  // Get file name from url.
  var xhr = new XMLHttpRequest();
  xhr.responseType = 'blob';
  xhr.onload = function() {
    var a = document.createElement('a');
    a.href = window.URL.createObjectURL(xhr.response); // xhr.response is a blob
    a.download = filename; // Set the file name.
    a.style.display = 'none';
    document.body.appendChild(a);
    a.click();
    delete a;
  };
  xhr.open('GET', "https://crossorigin.me/" + url);
  xhr.send();
}

var z = "", t = "", u = "";
$("li > a > img").each( function( k, v ){
	u = $(v).attr("srcset").split(" ")[0];
	t = $(v).parent("a").attr("href").split("/");
	t.pop();
	saveFile(u, t.pop() + ".png");
} );