File upload allows you to put certain files directly onto a selected presentation board. This can be done using the icon to the right of the favorite (star) icon.
Files will pop up in the presentation board, just like any other webpage. PDFs and PPTX (Powerpoint, Slides, Keynote, etc.) will open in a slideshow format, allowing you to advance or backtrack through slides in the presentation board window. Uploading files in these formats takes a bit longer to complete, however.
The following file formats are among those that can be uploaded to a presentation board: .pptx, .ppt, .pdf, .jpg, .gif, .png, and .txt
Please Note: PowerPoint uploads become converted to "still" slides, without animations, embeds, or advanced features. If you wish to use animations or other advanced presentation features, please import and review your presentation in Google Slides (however, your Google Slideshow must be 1 click per slide with any per-slide special effects being automated or constant, as transitions within the same slide will not be broadcasted to your audience, although you can see it successfully yourself. Transitions between slides are also not observed by audiences).
For best results and greatest accuracy, please consider using PowerPoint’s, Keynotes’, or Zoho’s online presentation options, or stream your presentation directly from your device as a YouTube Live stream, as these options will successfully display any mid-slide transitions, embedded videos, audio, etc.
There is a known issue with PowerPoint slides not displaying correctly at times, showing simply a white or black screen to participants. The fix is that you press the refresh button in the top right of the presentation board. If this occurs, please submit a bug report (show them how to submit a bug report). To avoid this issue, please upload your presentation to Google Slides, save the slideshow, then present it from a presentation board directly.