I wonder if it is a drain on system resources to have those extra code lines, e.g. the line(s) to instruct the browser to resize. I am guessing there is no way to add lines to instruct the browser to display the jpeg image at higher compression (lower quality), nor is there a way to recompress the image on upload to the gallery, but if there is a way, I reckon that might also be a drain on system resources. however, I have noticed problems with various gallery software in that there's a limit to the number of images before the system starts to slow down severely. here it appears to be around 20,000 or 30,000, whereas with others it's more like 5,000 to 7,000.