PowerPoint (All Users) - Reduce the Size of Your PowerPoint File
A large PowerPoint file will make it difficult to email, download, and view. The most common cause of large files is the quantity and size of the images in the PowerPoint. While you do not want to reduce the number of images in a presentation, you can delete cropped areas and reduce a high-quality image to a lower but still acceptable quality.
Follow these instructions to reduce the file size of your PowerPoint presentations.
Note: Blackboard has a limited storage space of 2GB. Multiple large files will exceed the quota quickly. If your file is still over 50MG, consider storing larger files in OneDrive. Upload the file to OneDrive and copy the link. Instructions: https://kb.siue.edu/61722. Then create the web link in Blackboard. (Instructions: https://kb.siue.edu/61490).