How can we easily convert PPSX to PPTX right in PowerPoint 2010?
In fact it is very easy! People get used to open a file by double click it, but they have forgotten there are other ways to open the PPSX file.
Run your PowerPoint 2010 first, this should be a blank slide. Click File > Open and browse PPSX file you want to open.
Now, you should see the PPSX file be opened just like ordinary PPTX file, you can edit it, jump to any slide, etc.
Finally, click File > Save As and choose PPTX as the output format.
Easy, isn’t it? Have a try yourself!
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