package pptx Package pptx creates and adds slides to powerpoint presentations. The package can be used to create simple powerpoint pptx files or to append slides to an existing presentation. The file format is a compressed zip archive with xml files and images. The package unpacks the archive in memory, adds files and manipulates existing xml files to add new slides. It uses github.com/beevik/etree for xml operations. The aim of the package is not to support all of powerpoint's possibilities but to understand just enough to be able to add new slides to an existing presentation. Supported are: Textboxes - Position - Font, Fontsize - Multiline text - mark as title Item lists Images - Position