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How can I find out which version of PowerPoint was used to create a particular document?

General answers welcome, answers describing how to do it using PowerPoint 2011 (Mac) are even better. I'm assuming there must be a way to ask PowerPoint to report this information.

Szabolcs
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1 Answers1

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There may be a more elegant way, but this method works for all versions of Word, Excel, and PowerPoint 2007 or later on all operating systems:

  1. Change the file extension from .pptx to .zip (in truth, that's all the file really is, a compressed zip folder)
  2. Open the zip file and then the docProps folder
  3. Open the app.xml file in a text editor (e.g. TextEdit)

Look at the last tag, <AppVersion>. The number in that tag will correspond to the internal version number of that version of Office, which can be found in the Title/Version column on this Wikipedia article. For instance, one document I tried this on lists the app version as 14.0000, which corresponds to Office 2010 (Windows) and Office 2011 (Mac). As far as I can tell, there is no way to tell if it was made with the Mac or Windows version because the files created by each are functionally identical.

Thunderforge
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