My PowerPoint presentation seem very large is there a way of reducing the size of the resulting files?

Files which include one or more of the following...

• Graphic files,
• music,
• video clips
• flash objects

...and all those custom instructions added in PowerPoint, result in bloated files.

There are a few things you can do to reduce the file's size:

• Reduce all graphic files to 96 dpi if you don't need to print them directly from the presentation.
  For screen viewing, 96 dpi is the best you can get. To include files with a higher resolution is a waste.
• Bitmap (.bmp) files are usually larger than other formats. If you're using bitmap files, try converting them to .jpeg or .png. Even .gif is better than .bmp, but not quite as efficient as .jpeg and .png.
• If the file suddenly grows in size for no apparent reason,
  
  • save the presentation using Save As and give it a new name.

This can reduce the file's size considerably, but won't always work. It does work with normal bloat.