Yes! PPT, PPTX, Keynote, ODP, and PDF are all supported presentation file types. However, to avoid experiencing formatting issues (strange fonts or shifted layouts), we recommend that you convert presentation files to PDF before you upload them.
Please note that animations, links, and transitions are not preserved when you upload a presentation to VoiceThread. However, if you’ve already recorded audio/video comments on a PowerPoint presentation, VoiceThread will preserve them and add them as comments to your slides.