I made some additional coding modifications (entirely new revamped).
Now if an image is less than 1050 pixels in width it will not be modified, however if it is larger it will be reduced to 1050 pixels.
So if you post an image that is 800 pixels wide it will remain 800 pixels wide. So in other words there is no up-scaling of images only downscaling of images wider than 1050 pixels.