Batch compress PDFs for Omeka

batch.sh

# This requires the use of GhostScript
# On macOS, the easiest way to get started is install with Homebrew
# brew install ghostscript
#
# This file should live in the directory that contains the PDFs. From
# the command line, just running `bash batch.sh` will compress the PDFs
# and fix any issues that might be present with JPEG2000 images. The
# compression process should preserve the OCR and will likely reduce the
# size of the PDF as well.
#
# Flattened files will be appended with `.flatened.pdf` and will not overwrite
# the original PDFs.

for files in *.pdf 
do
    gs -dBATCH -dNOPAUSE -dSAFER -sDEVICE=pdfwrite -sOutputFile=$files.flattened.pdf $files
done