Use Save As or Export. Avoid Print To, if you can!
On a MAC, make sure you also check the printing settings as those sometimes interfere with how the file is exported to PDF format.
Create a bottom layer with a white rectangle, then export to PDF.
(If the poster was designed in Illustrator without a white rectangle as the bottom layer it will automatically save as a transparent background. This will crop your poster to the closest object getting rid of any margins you may have. Placing a white rectangle as the bottom layer preserves the margins and dimensions of your poster.)
Export your file using XeLaTeX, not the default PDF LaTeX (Menu → Settings → Compiler). If using Overleaf, make sure to clear the cache as well.
Sometimes during exporting to PDF, weird borders appear around graphs and charts that are not visible in PowerPoint. While we don't know the precise cause of this, and we have no sure fix for it, we have seen various degrees of success with the following solutions:
