What to Know
- A PPTX file is a Microsoft PowerPoint presentation.
- Edit it online for free with Google Slides, or use PowerPoint.
- Convert to PDF, ODP, and others with those same programs, or use Zamzar.com.
This article explains what PPTX files are, which programs will open them, and how to convert them to other presentation formats.
What Is a PPTX File?
A file with the PPTX file extension is a Microsoft PowerPoint presentation that stores slide shows. The Open XML format is used, which means the data is stored as separate files and folders in a ZIP package.
PPTX files can contain formatted text, objects, slides, images, videos, and more.
This is the default presentation file format for PowerPoint 2007 and newer. The older version of this format, used in PowerPoint 2003 and older, uses the PPT file extension.
PowerPoint’s PPSX format is similar to PPTX except that it will open directly to the presentation, while PPTX files open to the editor mode.
How to Open a PPTX File
If you have your hands on a PowerPoint file that you just want to look at and not edit, this can be done very easily with the free PowerPoint Viewer program (originally available on Microsoft’s website, but now offered on third-party download sites).
You can't edit the slides or make changes to anything like you can with a full version of Microsoft PowerPoint, but that viewer is a lifesaver if you just need to flip through a PPTX presentation someone sent you.
Conholdate.app and Online Document Viewer could be helpful, too. Just wait for your file to upload, and then follow any directions on that page to view the slide show online.
The Conholdate file retention policy details how long your file remains on the website before being automatically deleted. The other website linked above deletes your file after you view it.
To open and edit PPTX files, without having a copy of PowerPoint, is doable with the free WPS Office Presentation or OpenOffice Impress. These are just two of several free Microsoft Office alternatives that fully support PPTX files.
There are also some free presentation makers that can import PPTX files for editing online—no need to install any software. One of them, Google Slides, lets you upload a presentation from your computer, make changes to it, and then either keep it in your Google Drive account or download it back to your computer as a PPTX or some other format like PDF.
Google also offers the free Office Editing for Docs, Sheets & Slides browser extension that works as a PPTX viewer and editor that runs right inside the Chrome browser. This works not only for PPTX files you drag into the browser from your computer, but also for any PPTX file you open from the internet, including ones you might receive over email. That extension also works with other MS Office formats like XLSX and DOCX.
If you want to extract images from the PPTX file, you can do that with a file unzip tool. Use one of those programs, such as 7-Zip, to open the PowerPoint file as if it were an archive, and then navigate to ppt > media to see all the images that were imported into the slide show. You can copy out any pictures you want to extract from the PowerPoint file.
How to Convert a PPTX File
If you're using one of the full-support PPTX programs mentioned above, you can easily convert your presentation to another file format by just opening the file in the program and then re-saving it under a different format. In most apps, this is done via the File > Save as option.
Sometimes, a much faster way to convert one is with an online file converter. One of our favorites for converting PPTX files is Zamzar. You can save it to PDF, ODP, PPT, and a number of image formats, like JPG, PNG, TIFF, and GIF.
A PPTX file can also be converted to a format that Google Slides can recognize. Just upload the file to your account through Google Drive’s New > File upload menu. It will open in Google Slides automatically.
Once the presentation has been converted to Google Slides, you can open it there and convert it to other formats via File > Download. These formats include PPTX, ODP, PDF, TXT, JPG, PNG, and SVG.
If you just need to get one of the photos out of the slide show, see the 7-Zip instructions above for an easy method.
Still Can't Open It?
If your file doesn't open with the suggestions from above, make sure you aren't mixing up this one with a file extension that just looks similar.
For example, PTX might look similar to PPTX, but those types of files don't open with the presentation programs described here.
A similar example can be seen with Serif PagePlus templates that use the PPX file extension. It’s really easy to think that one of those is the same as a presentation file when you look at just their file extensions, but those are actually used with PagePlus.
If you double-check the suffix for your file and find that it, in fact, does not read ".PPTX," then research what it does say to learn more about the file format it might be in and which software programs are capable of reading, editing, or converting it.
Frequently Asked Questions
- How do you convert a PPSX file to a PPTX file? To edit a PPSX file, you must convert it back to a PPTX format. You can try renaming the file: find it on your computer (but don’t open it), right-click, select Rename, and change the file extension from .ppsx to .pptx. If that doesn’t work, open the PPSX file in PowerPoint, go to File > Save As and select PowerPoint Presentation (*.pptx) as the file type before saving it.
- How do I convert a PDF to PPTX? You can download Adobe Acrobat DC to convert PDFs into PowerPoint. Open the PDF document in Acrobat DC and select Export PDF > Microsoft PowerPoint > Export. Acrobat will run optical character recognition (OCR) automatically and create a new file that you can download.
- How do you convert a PPTX to MP4? To convert a presentation to a video in PowerPoint, open the PPTX file in PowerPoint and go to File > Export > Create a Video. Enter a file name for the MP4 video file, and then click Save.