if ( Pattern.matches("png|jpg|jpeg", extension ) ) {


                    String location =  requestURL;

                    //Open the stream from the location
                    InputStream stream = new URL(location).openStream();

                    //Create image stream
                    Object obj = ImageIO.createImageInputStream(stream);

                    //Setup the image reader
                    ImageReader reader = ImageIO.getImageReaders(obj).next();

                    //reader.setInput(obj, false);
                    reader.setInput(obj);

                    int w = reader.getWidth(0);

                stream.close();

                 if( w > 480 ){

                    String toReplace = requestURI.substring( requestURI.lastIndexOf("."), requestURI.length() );

                    String newURI = requestURI.replace(toReplace, "");

                      if( newURI.contains("/dotAsset/") ){

                        newURI = newURI.replace("/dotAsset/", "");

                        doLog("Replacing Image : ");
                        doLog( "/contentAsset/image/" + newURI + "/fileAsset/filter/Resize/resize_w/480" );

                        req.getRequestDispatcher( "/contentAsset/image/" + newURI + "/fileAsset/filter/Resize/resize_w/480" ).forward(req, res);



                      }
                      else{
                          chain.doFilter(req, res);
                      }