How do I reduce file size?

[tosime]

I started with a 31,404 kb ppt file with 362 slides.
I saved it as HTML to see a list of the graphics.
I identified 5 large graphic images that totaled 2,794 kb.
I went back into my PP slides and replaced the large images (mostly png)
with jpeg versions.
This reduced the total size of these images to 124 kb.
I saved my updated ppt file expecting to see a reduction in file size.
There was no change in file size!

What happened?

I have both versions of each of the graphics in a separate folder, where I
can see the file size reduction.
How come there is no reduction in my ppt file size?

....Tony

 

[Bill Foley]

Turn off your Fast Saves (Tools, Options). Also check out the following:

http://www.rdpslides.com/pptfaq/FAQ00062.htm

--
Bill Foley, Microsoft MVP (PowerPoint)
Microsoft Office Specialist Master Instructor
www.pttinc.com
Check out PPT FAQs at: http://www.rdpslides.com/pptfaq/
"Success, something you measure when you are through succeeding."

 

[tosime]

Thanks Bill.

I tried your suggestions and as many as practical in the pptfaq web page.
File size remains the same.

I have learnt enough though to guide me the next time I create ppt files. I
should have smaller files to start with rather than trying to shrink them
after completion.

Thanks again...Tony

 

[Rae Drysdale]

Right-click the picture, and then click Format Picture on the shortcut menu.
In the Format dialog box, click the Picture tab, and then click Compress.
Under Apply click All pictures in document. Save the file. Does this help?

 

[tosime]

Thanks Rae.

I do this as a standard procedure for all my PowerPoint files. I usually get
a modest to good compression. However, sometimes I still have very large
graphic files i.e. over 500kb.

What I should do in future is copy each graphic to a subdirectory first and
examine its size and format. I should apply compression and format changes
first before using the graphic in PowerPoint. This takes some discipline and
will slow down my workflow and cramp my creativity, but it is probably worth
it in the long run.

Thanks again...Tony

 

[tosime]

Thanks Rae.

I do this as a standard procedure for all my PowerPoint files. I usually get
a modest to good compression. However, sometimes I still have very large
graphic files i.e. over 500kb.

What I should do in future is copy each graphic to a subdirectory first and
examine its size and format. I should apply compression and format changes
first before using the graphic in PowerPoint. This takes some discipline and
will slow down my workflow and cramp my creativity, but it is probably worth
it in the long run.

Thanks again...Tony

 

[tosime]

I think I have solved the problem thanks to Steve prompting me to think
through what I did when I "updated" the graphics.

I went back to the PP file. Deleted the large graphic images and inserted
new smaller size images. The whole PP file reduced significantly.

What I have learned from this is that if you copy and "paste special" the
same image in a lower size file format, PP keeps the "original" graphic in
the file, even when you delete the older, larger graphic. This assumes there
was no error on my part in the replacement process.

The bigger lesson is to always insert the compressed, final version of the
image you want to use. Do the conversions and adjustments before you place
the graphic - aim for very low image size, such as jpeg, in a resolution
that matches the final display output resolution.

....Tony

 

[John Wilson]

"What I have learned from this is that if you copy and "paste special" the
same image in a lower size file format, PP keeps the "original" graphic in
the file,"

pretty sure this isnt the case UNLESS you have "fast save" enabled.

_____________________________
John Wilson
Microsoft Certified Office Specialist