[bf2017]

Thanks Steve. My GD is:

GD Support enabled
GD Version bundled (2.0.34 compatible)
FreeType Support enabled
FreeType Linkage with freetype
FreeType Version 2.1.9
GIF Read Support enabled
GIF Create Support enabled
JPG Support enabled
PNG Support enabled
WBMP Support enabled
XPM Support enabled
XBM Support enabled

I don't see:

libJPEG Version 6b
libPNG Version 1.2.10

So I asked my host to look into it, and they said that they have verified that the libs are installed.

I also couldn't find on the settings page where you can specify which image type to use.