Prevent Encoding Issues in PowerPoint

To ensure your presentation displays correctly on all devices, verify that the fonts are embedded in the file.

1. Open the desktop version of PowerPoint.
2. Go to File → Options → Save.
3. Under Preserve fidelity when sharing this presentation, check “Embed fonts in the file.”

4. Select “Embed all characters (best for editing by other people).”

    

If the option is unavailable:
Download the presentation to your computer, open it in PowerPoint, enable “Embed fonts in the file,” choose “Embed all characters,” then re-upload the updated version to SharePoint.