GhostScript command to compress large PDFs with a lot of images. Requirements: https://www.ghostscript.com. Usage: `./compress.sh <input file> <output filename sans pdf>

compress.sh

#!/bin/sh
gs \
        -sDEVICE=pdfwrite \
        -dCompatibilityLevel=1.4 \
        -dPDFSETTINGS=/ebook \
        -dEmbedAllFonts=true \
        -dSubsetFonts=false \
        -dNOPAUSE \
        -dQUIET \
        -dBATCH \
        -sOutputFile=$2.pdf \
        $1