File Extension PTI File Format PTI- Plugin : Graphics PTI stands for PTI- Plugin : Graphics. 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 TwinStrata, Beam Communications and STORServer make DR announcements VSoft FinalBuilder 4 How can I attach note/comment to Outlook emails?