Board Thread:Support Requests - Getting Technical/@comment-1450483-20130807161537/@comment-1330470-20130807180751

Princess Platinum wrote: Was it the right file type? E.G. A PNG file.

Huh?

Background images do not have to be PNG to be used in ThemeDesigner. In fact, in this case, that'd be very bad for it, 'cause PNG is very bad for images with many colors, such as this one.

Not only is the PNG image wayyyy too large for ThemeDesigner, it's way too large in general: a 3MB background is terrible. We'll have to JPEG it down a little...

(You might have been thinking about wordmarks or Special:Promote images: those do have to be PNG I think)