title: Is gwt slow or normal?
body: <p>i want to ask about the speed of gwt-ext applications 
  Are there any one tried Gwt-ext application and know that Is it slow or normal ?</p>
  
  <p>can i handle images with gwt-ext as example i want to make the image black and white ?</p>
  
  <p>thank you </p>
  
  <p>saebnajim </p>