File Extension WNS File Format PrintShop Newsletter WNS stands for PrintShop Newsletter. This was last updated in March 2012 By Margaret Rouse Browse File Extensions Alphabetically: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # Ask a Question. Find an Answer. Ask your peers a question about this file extension. Ask a Question Open *.bro and *.sig files Finding the right person to design automated newsletter How do I subscribe to certain TechTarget digests and updates?