Batch embed and subset pdf files in a directory

batch_embed_pdf.py

import os
import subprocess
import glob


# the shell command that embeds and subsets fonts in a pdf file
cmd = "gs -dSAFER -dNOPLATFONTS -dNOPAUSE -dBATCH -sDEVICE=pdfwrite -sPAPERSIZE=letter -dCompatibilityLevel=1.4 -dPDFSETTINGS=/printer -dCompatibilityLevel=1.4 -dMaxSubsetPct=100 -dSubsetFonts=true -dEmbedAllFonts=true -sOutputFile={} -f {}"

for file_path in glob.glob(os.path.join('unembedded_dir_path', '*.pdf')):
    target_path = os.path.join('embedded_dir_path', os.path.basename(file_path))
    subprocess.call(cmd.format(target_path, file_path), shell=True)
    subprocess.call(['pdffonts', target_path])