Converts each argument.pdf file in argument-pdfa.pdf compliant file using Ghostscript

pdfamaker.sh

#!/bin/sh
# pdfamaker.sh
# 2025-05-20
# 
# build by ChatGPT
# it depends only on Ghostscript
# it works with my current one:
#   Ghostscript 10.05.1 (2025-04-29)

# Exit on any error
set -e

# Check if arguments were passed
if [ "$#" -eq 0 ]; then
    echo "Usage: $0 file1.pdf [file2.pdf ...]"
    exit 1
fi

# Process each file passed as an argument
for file in "$@"; do
    # Check if file exists and is a PDF
    if [[ ! -f "$file" ]]; then
        echo "File not found: $file"
        continue
    fi

    if [[ "$file" != *.pdf ]]; then
        echo "Skipping non-PDF file: $file"
        continue
    fi

    # Skip files that already have -pdfa suffix
    if [[ "$file" == *-pdfa.pdf ]]; then
        echo "Skipping already converted: $file"
        continue
    fi

    # Strip extension and create output filename
    base="${file%.pdf}"
    output="${base}-pdfa.pdf"

    echo "Converting $file → $output"

    gs -dPDFA=2 \
       -dBATCH \
       -dNOPAUSE \
       -dNOOUTERSAVE \
       -sDEVICE=pdfwrite \
       -sProcessColorModel=DeviceRGB \
       -dPDFACompatibilityPolicy=1 \
       -sOutputFile="$output" \
       "$file"

    echo "✔ Converted: $output"
done

echo "Done."

exit 0
       # -sColorConversionStrategy=UseDeviceIndependentColor \

# gs -dPDFA=2 -dBATCH -dNOPAUSE -sProcessColorModel=DeviceRGB \
#    -sDEVICE=pdfwrite -sPDFACompatibilityPolicy=1 \
#    -sOutputFile=galileo-pdfa.pdf out.pdf

# gs -dPDFA=2 -dBATCH -dNOPAUSE \
#    -sDEVICE=pdfwrite \
#    -sOutputFile=galileo-pdfa.pdf out.pdf

# gs -dNOPAUSE -dBATCH -sDEVICE=pdfwrite -sOutputFile=out.pdf galileo.pdf