Show images in tweets.

twitter.com.js

/*
 * Copy this to ~/.js/twitter.com.js
 * Tested with dotjs for Firefox
 *
 * http://codingfulness.tumblr.com/post/7476823732/inline-images-twitter
 *
 * Public Domain Licence
 */

$(function() {

  $(window).bind("DOMNodeInserted", function(event) {
    var target = $(event.target);

    if(target.data("item-type") === "tweet") {
      if(target.data("expand-images-done") === "ready")
         return;
      target.data("expand-images-done", "ready");

      var target_width = target.width();

      target.find("a.twitter-timeline-link").each(function() {
        var url = String.prototype.toString.call(this.href);
        if(url.indexOf("http://t.co/") === 0 && this.title)
          url = this.title;

        unsafeWindow.twttr.media.resolveImageUrl(url, 300, {
          success: function(url) {
            $("<img>", {
              src: url,
              width: target_width - 100,
            }).
            css("margin-left", "50px").
            appendTo(target);
          },
          error: function() { /* ignored */ }
        });

      })
    }

  });
});