What is a PPTX File (And How Do I Open One)?

A PPTX file is the file extension of the Microsoft PowerPoint Presentation files. It is basically a ZIP compressed archive that can contain a number of files, including text, images, and multimedia. PPTX files can be opened by Microsoft PowerPoint or any other compatible software.

PPTX is the current standard file format for PowerPoint files. It was introduced in 2007 and has since replaced the older PPT format. PPTX files are based on the XML standard, which makes them more versatile and easier to work with than PPT files.

More About the PPTX File

PPTX file format was first introduced by Microsoft with their MS PowerPoint 2007. It is based on XML standards and uses the ZIP compression algorithm like the other programs in the Microsoft Office suite.

Compared to the old PPT format, the extra X in the PPTX stands for XML, which is the standard for file format exchange. The integration of XML makes the PPTX file format more versatile and makes it possible to open a PPTX in other presentation programs.

Interesting Fact: You can actually explore what’s inside a PPTX file without opening it in PowerPoint. Simply change the file extension from .pptx to .zip, and then open the file using any ZIP file extractor.

How to Open a PPTX File?

As mentioned earlier, PPTX files can be opened using Microsoft PowerPoint or any other compatible software. Simply locate the file you want to open in the File Manager and double-click on it. The file should open in MS PowerPoint within a few seconds. 

If you don’t have PowerPoint installed, there are several free alternatives that you can use to open PPTX files. These include LibreOffice, Apache OpenOffice Impress, Google Slides, and Apple Keynote.


So, the takeaway here is that PPTX files are just PowerPoint presentations saved in the XML-based PPTX format. They are more universal than the older PPT format and can be opened by several different software programs. We hope you will find this explanation helpful. Thanks for reading!