Resizing for tiffg3

Today I’ve been able to properly convert a tiff file to pdf and
then back to tiffg3. The commands are:

$ convert -page A4 -density 600 -quality 100 -compress Zip file.tiff file.pdf

It is important to set the pagesize here, otherwise GhostScript wont resize it properly.

$ gs -q -dBATCH -dNOPAUSE -dSAFER \
        -sPAPERSIZE=a4 -dNOPAGEPROMPT \
        -dFIXEDMEDIA -sDEVICE=tiffg3 \
        -r204x196 -sDithering=gsmono -dPDFFitPage \
        -sOutputFile=file-g3.tiff file.pdf

Important here also the -dPDFFitPage switch.