php5-gd from devel:languages:php:php53 project

Select Your Operating System

For openSUSE 13.1 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/devel:languages:php:php53/openSUSE_13.1/devel:languages:php:php53.repo
zypper refresh
zypper install php5-gd