I often copy previous presentations and revamp them for my next presentation. I notice that after changing the title slide in PowerPoint 2013 the embedded thumbnail.jpeg file is not updated. Ordinarily I would not care, but recently I am presenting to two competing comanies and I cannot have the branding for one company on the presentation for another.

Short of completely recreating the deck, is there a way to force the update of the thumbnail.jpeg file in the PPTX?

Thanks!

M

OK, I discovered that You can go to Backstage and chose Properties | Advanced Properties | Summary | Save preview with picture. Uncheck and save then recheck and save and PowerPoint will refresh the thumbnail...unless it doesn't. Which was true for half of my decks.

For those I:

1. Renamed the file to zip
2. Deleted the thumbnail.
3. Renamed the file back to PPTX 
4. Opened in PowerPoint.
5. Let PowerPoint perform the repair.
6. Toggle the preview setting as above

HTH,

Matthew

Thank you for sharing your solutions and experience here Matthew. Good day.

Cheers,
Tony Chen
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very helpful - thank you!

FYI my 2013 presentation did NOT refresh - i had to do the manual steps

cheers

THANK YOU FOR POSTING THIS! It worked great.  I too was working out a PPP for 2 clients. Could not have one see the other. Thanks for helping me overcome the thumbnail issue!