Board Thread:Support Requests - Getting Technical/@comment-25330335-20160920010923/@comment-5558012-20160920174655

There are two gallery types on Wikia: Galleries and New Image Galleries. Neither type though will stretch images to make them artificially bigger in a gallery, regardless of the width you set. Both galleries keep small images small while the old gallery will resize a large image down to the specified width and the new gallery will crop and resize large images down to identical squares.