compress_pdf

#!/bin/bash

# Check if a file path was passed
if [ -z "$1" ]; then
    echo "Usage: $0 <path-to-pdf-file>"
    exit 1
fi

input="$1"

# Check if file exists
if [ ! -f "$input" ]; then
    echo "Error: File '$input' not found!"
    exit 1
fi

# Extract filename without extension and directory
dir=$(dirname "$input")
filename=$(basename "$input" .pdf)
output="${dir}/${filename}_compressed.pdf"

# Run Ghostscript to compress the PDF
gs -sDEVICE=pdfwrite -dCompatibilityLevel=1.4 \
   -dPDFSETTINGS=/screen \
   -dDownsampleColorImages=true \
   -dColorImageResolution=150 \
   -dDownsampleGrayImages=true \
   -dGrayImageResolution=150 \
   -dDownsampleMonoImages=true \
   -dMonoImageResolution=150 \
   -dNOPAUSE -dQUIET -dBATCH \
   -sOutputFile="$output" "$input"

echo "Compressed file saved as: $output"