Microsoft PowerPoint 2010 issue


We are currently experiencing an issue in our company where people are finding their Powerpoint files growing in size massively and are not sure why. All of our users are using 32-bit Powerpoint 2010 in Windows 7 Pro 64 bit.

With one file a user has sent me as an example, they have created it with 54 slides and it is 8MB in size so perfectly fine.

Another user in the company has then opened this same file, taken out some slides so that it is left with only 20 of the slides and then after saving it the file size shoots up to 103MB without adding any new content. As a test, I have tried taking out all of the slides so that the file is completely blank and that makes it 102MB.

We are not sure why this is happening and would like some suggestions on what may be causing it and how we can fix this problem.

Thanks in advance,

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Jamie GarrochSenior Technical Consultant at BrightCarbonCommented:
Has the second user that is saving the file got the Embed fonts in the file options selected? The other thing you could check is changing the extension of the blank.pptx file that they have created to and then examining the contents for "large" files in order to deduce where the bloat is coming from.
Jamie GarrochSenior Technical Consultant at BrightCarbonCommented:
Another thing to watch out for, although probably not the issue here is "Slide Master Bloat". This typically occurs when a user copies slides from one presentation to another and inadvertently creates multiple copies of the Slide Master and its associated layouts. If the master or its layouts contain images, the problem of file size is exasperated. We actually use tools in our studio to detect this as in the screenshot below (we found one client with 52 slide masters and over 1000 layouts this week!) but you can check and correct manually by clicking the View tab followed by Slide Master.
PowerPoint Slide Master Bloat

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MalcAuthor Commented:
Hi Jamie,

Thanks for this, your suggestion regarding Slide Master seems to be our issue. If we look in here, there are hundreds of individual slides shown.

Not a big user of Powerpoint myself so not sure what this effects but removing these doesn't seem to change the layout of the actual slides in the file and does bring the size right down from 100MB+ back to under 5MB.

Do you know if there's any chance of us breaking anything else in the file by removing these?
Jamie GarrochSenior Technical Consultant at BrightCarbonCommented:
Hi Malc. Don't worry about deleting unwanted Slide Masters. PowerPoint doesn't allow you to delete them unless ALL of the Layouts within that Master are unassigned to slides. That's the first step to cleaning it up. The next step is that you may find that some slides are assigned to the same Layout design but across different masters. They can be reassigned to your "master" master (!) by right clicking on an empty area of the slide (or outside it in the slide workspace) in the normal view and changing the Layout. Once all layouts are unassigned, then that slide master may also be deleted.
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