In the desktop mode the images are centered using
[[File:Filename.png|centre]]
But for some reason that does not work in mobile view. Go to https://wiki.gamepaduniverse.com/w/index.php?title=How_To_Develop&mobileaction=toggle_view_mobile
Topic on Extension talk:MobileFrontend
The location parameter doesn't centre images on MobielFrontend. Is this a bug? Any work around?