Thread:Veenster7/@comment-34633031-20180623131119/@comment-26901681-20180623215335

Wiki policy actually states that either format is accepted.
 * "Both PNG and JPG formatted images are allowed anywhere on the wiki."

Although, I'd highly recommend if your images could be in PNG format, especially if you're going to ask me over and over again to replace these images. Also, if the image was uploaded with the intention to be added to a gallery, then you must properly title the image.