Hello.

Is it possible (using  ImgX64) to convert JPEG 8 bits gray scale files to TIFF B/W Group 4 compression files? 

 I want to convert the files without the need of a user interface.

Kind Regards.

Yes, this is possible.

1. Create an ImgX object.
2. Use Import.FromFile to load the image.
3. Change the ImgX.Image.ImageType to ixitPalette_1.
4. Set the ImgX.TIFCompression property to ixtcGroup4FAXEncoding.
5. Use Export.ToFile to save the image.