A POTX file is a presentation template created by PowerPoint, a program that allows users to create slide show presentations. It contains default styles, text, layout, and formatting. POTX files are used to create multiple .PPTX files with the same formatting.
POTX file open in Microsoft PowerPoint 2016
POTX files are saved in the Open XML standard format, which was introduced in Microsoft Office 2007. They replaced .POT files, which were saved in a binary format and used by PowerPoint 97 through 2003. POTX files can be opened in PowerPoint 2007 for Windows or PowerPoint 2008 for Mac, or by an earlier version of PowerPoint with Open XML component support.
POTX files come installed with PowerPoint allowing you to create presentations from professionally designed templates. You may also create your own custom templates to reproduce presentations specific to your needs. POTX files are commonly created by companies with a standard master slide, company logos, and company headers and footers.