Reduce the size of pdf files in the current directory.

reduce_pdf_size.sh

mkdir ./big_pdfs
mkdir ./small_pdfs

for F in `ls *.pdf`; do
 
 echo $F
 smallPDF="./small_pdfs/$F"
 echo $newPDF
 gs -dNOPAUSE -dBATCH -sDEVICE=pdfwrite -dCompatibilityLevel=1.4 -dPDFSETTINGS=/screen -sOutputFile=$smallPDF $F
 
done


#     /screen – Lowest quality, lowest size
#     /ebook – Moderate quality
#     /printer – Good quality
#     /prepress – Best quality, highest size