I use the latest version of Firefox. My monitor size is 1280 x 1024. Most of my images posted are 3000 x 2400. Caedes shows me the size to be used (shown in bold) for full screen display as 1408 x 1126 but never as 1280 x 1024. The size 1408 x 1126 is too large and the next size shown (1142 x 913) is too small. Can anyone tell me why?