PowerPoint Presentation File Size Reducer

Usage by CLI

pptxreduce [-w] file ...

-w  Overwrite the original pptx file.
    If the option isn’t chosen, the original file is renamed to *.pptx~

Usage by GUI

1. Run sudo cp pptxreduce /usr/local/bin
2. Drag & drop *.pptx to the Automator application, pptxreduce.app

Background

PowerPoint for Mac often creates a huge pptx file. The cause is because it saves a pasted image as a uncompressed TIFF file in the pptx file. Mac user never pastes images and always have to use Insert ribbon.

This tiny script fixes the problem by the following step.

1. Uncompressed a *.pptx as a ZIP file
2. Compress it again as a ZIP file

That’s all. The uncompressed TIFF files are compressed at the step 2.