The specific problem I have is that the photos in Product Description are rendering too small and if I stretch them they pixellate. The same photos are fine in other sections. However, from reading about possible solutions I think what I need to do is to go into Dashboard/Woocommerce/Settings/Product/Product Image Sizes and then alter the Product thumbnails to a larger size. I think I then have to go to Media/Library and then individually click regenerate thumbnails on each photo.
However having spent days/hours assembling my site at this stage I don’t want to bring the whole photo thing crashing down around me. Does anyone know if the steps above will work and are safe? Or is there another way around the problem?