php5-gd 5.6.16+dfsg-1ubuntu1 (amd64 binary) in ubuntu xenial

 This package provides a module for handling graphics directly from PHP
 scripts. It supports the PNG, JPEG, XPM formats as well as Freetype/ttf fonts.
 .
 PHP (recursive acronym for PHP: Hypertext Preprocessor) is a widely-used
 open source general-purpose scripting language that is especially suited
 for web development and can be embedded into HTML.