In the long run, this does not bode well for their global reputations, which depend on users trust in the openness and independence of their products and services.

The format of images you are able to manipulate depend on the version of GD you install, and any other libraries GD might need to access those image formats. Versions of GD older than gd 1.6 support GIF format images, and do not support PNG, where versions greater than gd 1.6 support PNG, not GIF.