[vako]

Hi Shannon,

 

At first, sorry for the late reply, we had holidays.

Actually, the correct and best way is to upload images of good quality with dimensions more than 1300×500 and after that rebuild image thumbnails to your preferred size, but rebuilt image size should not be more than the original image dimensions.

Actually, there is no other way to make any kind of changes to the images.

 

Kind Regards