Any Image on the web is built up to
          be transmitted. 
          In this sense it is conceived dealing with its downloading time. 
          
          It means: On the web Image implies a measure of size, which governs its speed of
          transmission and loading time (its weight). 
          Nevertheless, visibility is
          conditioned to a location and its right inscription in the page html code (the correct
          spelling of the image source). 
          
          In a phrase: 
          seeing is a matter of
          writing