Microsoft used to let you open slideshows without PowerPoint with their free viewer tool, but it was restricted to viewing only and is no longer available from their website. What you can use now is either their web-based version or mobile app.
Microsoft PowerPoint Online
PowerPoint Online is the web version of PowerPoint. It doesn’t have all the features as the desktop edition but it still lets you edit existing files, create new ones, share presentations with others, and print off presentations. All of it works from your browser, so you don’t have to download or install anything.
This version of PowerPoint is available if you have a Microsoft account (any email address that ends with hotmail.com, outlook.com, live.com, or msn.com) or a Microsoft 365 work or school account.
The easiest way to view or edit an existing PowerPoint file online is to drag it from your computer and drop it directly on the PowerPoint Online web page, or use the Upload link on that page. You can also save it to your OneDrive account.
PowerPoint Online is compatible with all versions of PowerPoint. You can save a presentation from PowerPoint Online back to your computer in a number of file formats, including images, PDF, PPTX, and ODP.
PowerPoint Mobile Apps
Microsoft also provides PowerPoint to mobile users. There’s an app for Android, iPhone, iPad, and Windows 11/10 devices (mobile, PC, and Surface Hub). The Microsoft Office app for Android and iOS also includes PowerPoint, along with Word and Excel.
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Similar to the online PowerPoint viewer, the app has you log in with your Microsoft account so that you can access all the files from your OneDrive account, the ones that are stored on your device, and PowerPoint files saved in other cloud storage services (like Dropbox, Box, and several others).
You can edit directly from the app and use the menu from an open slideshow to save as a new title and to print it off.
Other Free PowerPoint Viewers
The two options described above are Microsoft’s free methods for opening PowerPoint files, but third-party programs can be used, too.
Unless you’re interested in getting PowerPoint for a limited time only, as part of the Microsoft Office free trial, check out our lists of free presentation software, free online presentation makers, and free Microsoft Office alternatives for some additional choices that won’t cost you a dime.
You might be relieved at the variety that’s available, especially if you’re looking for a way to open and edit PowerPoint files in a program that doesn’t resemble Microsoft’s software so much.
