Quote Originally Posted by stiggybaby View Post
Of coarse I already tried changing the large product photographs into gif but, as expected, the appearance is less than professional (looks bad).

I am surprised that this would be a *substantial change* since it would be just the extension for large images at we're talking about. I really thought it would have been a small, minor change to do something like ignore the extension, or swap it.

Ok.
Seriously this is a NON ISSUE if you simply use Image Handler as it convert your small and medium images to JPGs OR it can create the small and medium images from the large image you upload.. then there is no need to try and work out your mixed filetype issue..

Otherwise unless someone shares the code to do this, you will have to hire someone to provide the code changes you need if you really MUST have this change..