Today I needed to convert multiple .pdf files into .tiff images with specific DPI and LZW compression. I found it’s very simple using ImageMagic.

# install
sudo apt-get install imagemagick

# convert .pdf to lzw compressed .tiff changing dpi to 300
mkdir tiffs
for f in *.pdf; do 
  echo `date` $f; 
  convert -density 300 -compress lzw $f tiffs/$f.tiff; 
done
date

For more options, have a look at ImageMagic site.