An excerpt from the actual code

excerpt.js

//spin through each image object
    			json.data.forEach(function(image,index,array) {

  					//we don't want gifs
  					if (!image.link.match(/\.gif$/)) {
  						//get the image extension
  						var ext = image.link.match(/\.\w+$/);
  						//change the link to give us the (l)arge version so we don't kill ourselves on bandwidth
  						//also remove the http://i.imgur.com/ text from the link
  						var match = image.link.match(/http:\/\/i\.imgur\.com\//);
  						image.match = match;
  						//image.link = image.link.replace(/\.\w+$/,'l' + ext).replace(/http:\/\/i.imgur.com\//g,'');
  						
  						json.data[index] = image; 
  						app.io.broadcast('global:status', { message: subredditName + " -- Found: " + image.link});
  					} else {
  						//remove the image from the document if it's a gif
  						json.data.splice(index,1);
  					}
  				});