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Stanford graphics
File type: Bitmap image file
An sg1 file extension is related to the Stanford graphic image format.
File type category:
Bitmap image file
Date updated: February 21, 2018
Record marked as obsolete and not updated for a long time.
The sg1 file extension was in the past used for Stanford graphic image format.
Seems to be very rare used or obsolete picture image file format without support from developer.