2. Double-click to open the file and select the picture in any slide.
3. Double-click the picture, and the related settings page will pop up, with a compression button at the lower left.
4. Single-machine compression will pop up the compression setting page.
5. Select all the pictures applied to the document in this page with the resolution of web/ screen, and then click OK to complete the compression of all the pictures in the file.
6. Click the Save button in the upper left corner of PPT to save the file. After closing the file, we saw that the file size became 4.48 m. The PPT file was successfully reduced by more than ten times.