99% of PPT volume problems are caused by a large number of pictures and high resolution. So all we need to do is compress PPT pictures. How to compress PPT pictures? There are two ways:

Method 1

1. Open PPT, select a picture, click the Format tab, and click the Compress Picture button.

2. This interface will appear after clicking. If you want to compress all the pictures in PPT, just uncheck "Only applicable to this picture", and then you can choose the following resolutions according to your own needs, generally choose 150ppi.

3. Finally, click OK, press Ctrl+S or click File-Save to save PPT.

Method 2

1. Press "F 12" to open the Save As window.

2. Click "Tools"-"Compress Pictures".

3. Just select the compression resolution. Note that all the pictures in PPT are compressed in this way by default.