File Size Contracted by PowerPoint

  • Thread starter Thread starter Chris Klein
  • Start date Start date
C

Chris Klein

After creating, editing, and resaving a 25MB PowerPoint
presentation with phots, I found to my surprise that one
time it was saved as a 6 MB file. While the presentation
appeared complete, I couldn't help wondering how and why
it was suddenly compressed to 1/4 its original size.
Perhaps the application spontaneously decided to compress
some of the photos to slightly lower resolution? I'd
appreciate an explanation for this apparently bizzare
behavior from anyone who can shed some light on the
submect. A direct response (or notification of a posted
response) would be appreciated,as I may not get around to
looking for it at the website.

Thanks,
Chris Klein
 
There are a number of things which could cause this, but
most of them you'd be aware of.

One is turning off Allow Fast Saves under Tools/Options.

Another is using the Compress Pictures feature available
in PPT 2002/2003.

A third is refraining from backsaving. That is, if you
save a file as a plain ol' "Presentation (*.PPT)" file, it
is saved in a format which can be read and opened by PPT
97, 2000, 2002 and 2003.

If you "backsave" by selecting Save As "PPT 2003-97 & 95,"
then you're basically just adding the PPT 95 file format
to the regular PPT file type. That will bloat your file,
as PPT 95 didn't maintain image compression the way the 97-
2003 file format does.

So I'm guessing that you were backsaving, but that the
time when your file was only 6MB, you just did a regular
save.
 
After creating, editing, and resaving a 25MB PowerPoint
presentation with phots, I found to my surprise that one
time it was saved as a 6 MB file. While the presentation
appeared complete, I couldn't help wondering how and why
it was suddenly compressed to 1/4 its original size.
Perhaps the application spontaneously decided to compress
some of the photos to slightly lower resolution? I'd
appreciate an explanation for this apparently bizzare
behavior from anyone who can shed some light on the
submect. A direct response (or notification of a posted
response) would be appreciated,as I may not get around to
looking for it at the website.
Click to expand...

That's fairly ordinary behavior if you haven't turned Fast Saves off.
And if you haven't done that, I'd suggest you have a look-and-do here:

Do this before using PowerPoint seriously
http://www.rdpslides.com/pptfaq/FAQ00034.htm
 
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