zipping files. I stopped zipping files unless they were over 2MB because I was finding too many of the zips were corrupt...I wasn't too happy about that. So I just started uploading as is unless the files are HUGE which some are when you add images.
As for PDF are you changing the page size for the 6 inch screens?
p.s.
As for PDF are you changing the page size for the 6 inch screens?