How to convert Group3 and Group4 Fax files into TIFF format?

Files with '*.g3' extension contain data in "GTX Corp. compatible CCITT Group 3 runlength compressed file format". Files with '*.g4' extension contain data in GTX Corp. compatible CCITT Group4 file format.

To convert '*.g3' and '*.g4' files to TIFF:

• Download and install Image Converter Command Line program
• Press 'Start" button, then select 'Run...' and press it
• Enter the following command line:
ICPCL.exe -convertto tiff compression:CCITT_Fax4 -source "C:\Source Images\*.*" -dest "C:\out" -save_opt convert_subfolders:yes restore_subfolders:yes
• Press 'OK' button
• A DOS mode window will open and the conversion process will start
• Converted files will be stored in 'C:\out' folder

If you do conversions often you may found it more convenient to make a conversion script as a BATCH-file.