admin/environment/php extension/gd

GD extension for PHP

This extension provides functionality for handling graphics directly from PHP scripts. It supports the PNG, JPEG, XPM formats as well as FreeType/ttf fonts.

Installing

Package names below may vary if using third party package repositories or the PHP version is different from the operating system's default.

Ubuntu

Download and install gd:

sudo apt-get install php-gd

You might need to restart Apache (not necessary):

sudo /etc/init.d/apache2 restart

CentOS

Download and install gd:

dnf install php-gd

You might need to restart PHP-FPM to apply the change in configuration:

systemctl restart php-fpm

If you are unable to find the correct package try searching with:

dnf search 'php*-gd'

Microsoft Windows

The gd extension is normally included in the ext folder with PHP for Microsoft Windows. If Moodle reports this is missing ensure the following line is in php.ini:

extension=gd

There must be no ';' at the start of this line.

You will probably need to restart your web server to apply this change: for XAMPP run xampp_stop then xampp_start.