Answered By: Amy Campbell Last Updated: Jun 04, 2018 Views: 21
Uncompressed pictures are a common cause of large PowerPoint files. When photos are added to PowerPoint slides, they're saved in their full resolution in case they need to be zoomed or cropped while editing the slide, or in case the slides will be displayed on a very large projector screen. Digital photos can have very large file sizes, so if you use several photos it can make your PowerPoint file size quite large.
To reduce your file size after you're done editing photos, you'll need to compress the pictures. (This won't change their size on the screen, only their size in your file!)
PowerPoint 2016 or 2013:
1. Click (left-click) any photo in your PowerPoint.
2. In the top menu bar, select the Format tab.
3. On the left side of the tool bar, click on Compress Pictures and a dialog box will pop up.
4. IMPORTANT: Uncheck the box for "Apply only to this picture". (You want it to apply to all!)
Make sure the box is checked for "Delete cropped areas of pictures".
5. Click OK.
6. Go to File > Save As and save a reduced copy of your file with a new name, and then compare the size of your original file with your new file. Hopefully it's a lot smaller!