.TRIF File Extension
File TypeTiled Raster Interchange Format
What is a TRIF file?
Bitmap image file created in the TRIF format, which was designed by the Tiling Task Group (TTG) and sponsored by the National Bureau of Standards in 1987; supports bitonal images that are tiled with fixed-size squares.
TRIF files are used for exchanging large engineering drawings in a black and white raster format.