TFW file extension - MrSID file
What is tfw file? How to open tfw files?
File type specification:
The TFW file extension was also used in MrSID a program for encoding of georeferenced raster graphics, such as orthophotos. MrSID was developed primarily for Geographic Information Systems (GIS). With TFW format, massive image data can be partitioned and displayed as satellite imagery in map software.