Thread:Felinoel/@comment-5979234-20141217074812/@comment-91810-20141217142412

Yes png files are preferred because resizing jpg files break the image, jpg files are not designed to be resized, png files are specifically made to be resizable at a lower file size too.

Take a look at the example jpg image on the wiki article for jpg files.

http://en.wikipedia.org/wiki/Jpg