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Why do some PDFs not have the preview option when uploaded?

Question asked by Canvas Admin Expert on Jul 22, 2016
Latest reply on Aug 2, 2016 by awilliams


In the below screenshot, you can see a whole list of pdf files that have been uploaded and have the little pdf icon next to the file.  However, there is one file (HPCT_Anderson_RecommendedReading.pdf) that is a pdf but has a blank icon next to it. 

2016-07-22 09.51.38 am.png

 

Whenever I use the sidebar to embed a file into a content page, I get the preview icon if the file has the pdf icon, but I DO NOT get the preview icon if the file has a blank icon next to it. See below.

2016-07-22 09.51.21 am.png

 

I don't get it.  Why would some PDFs be previewable but one not be?   

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