A POT file is a template created by PowerPoint, a program used to create slide show presentations. It contains the default layout, formatting, and styles for a slide show. POT files are used to create multiple .PPT files with the same formatting.
POT file open in Microsoft PowerPoint 2019
You will most likely only come across a POT file if you are using PowerPoint 97 through 2003 or working with someone who uses those versions of the software. If you use PowerPoint 2007 or later and save your presentation as a template it will be saved in the OpenXML format with the .POTX extension. Although PowerPoint 2007 or later uses the POTX file by default, you can still use it to open the POT file.
POT files come installed with PowerPoint allowing you to create presentations such as school reports, financial quarter summaries, or family photo slide shows from templates with pre-defined formatting and styles. You may also create your own custom templates for reproducing presentations specific to your needs.