How to use Prezi in Portrait format - 9:16, 3:4 http://mcprezi.com/en/how-to-use-prezi-in-portrait-format-9-16-3-4/
How to use Prezi in Portrait format - 9:16, 3:4
When using any presentation software in the past, regarding screen ratio you could only choose between 4:3 and 16:9 in landscape format. But life has changed! Due to Citylights and advertising screens at trade fairs, cinemas …














