File Extension XPR3 File Format EPS created by Xpress XPR3 stands for EPS created by Xpress. 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 Create an ad using an .EPS file When to use EPS, AI and PDF? What will open EPS files?