@Tim_Sherrod : Effectively, Safari doesn’t open correctly (at least) pdf files (whether they are on the canvas or in a table) 
. The lightbox open, but all I was able to see was the title of the pdf.
But it works fine with pictures though 
.
As far as the security goes on safari, I disabled every security feature I could find for Coda.io but I still wasn’t able to open correctly the pdf.
I would have suggested to open the file in an other tab but it didn’t work either .
Maybe you could use Chrome or Firefox solely for a little bit until we have more info ?
And maybe @betty or @Ben_Lee, you could take a look at this ?