Yes, Keynote is compatible with PowerPoint presentations.
- Simply download the .pptx file on your Mac, open the Finder, browse and find the PPTX file. Open Keynote and drag the .pptx file into the software window.
- Now, you’ll see the presentation in Keynote. You might see some warnings as some elements of the design may change or distort during the conversion, but most of the time everything looks good.
- Edit whatever you want and save as a Keynote presentation file.