File Extension TEXI File Format TEX file format TEXI stands for TEX file format. 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 HTX and TEX file conversion How do I convert my data into R file format How to play SV5 file? Which player play SV5 file format?