Unpack PDFs + Create TOC

Blank.txt

Create BLANK.png with white background and some gray "filler / fill page" text
A4 I had had 3308 x 4678 pixels

create_toc.sh

#!/bin/bash

# Install necessary packages
sudo apt install -y imagemagick

# Font list
convert -list font | grep .ttf

# Get the list of filenames from a file (e.g., filelist.txt)
# Assuming each line in the file contains one filename
while IFS= read -r filename; do
  # Create an image with the filename as text
  convert BLANK.png -gravity center \
          -font /usr/share/fonts/truetype/dejavu/DejaVuSerif.ttf -fill black \
          -size 2646x2339  -gravity Center caption:"$filename" \
          -gravity Center -geometry 2646x2339+0+0 -composite \
          "${filename}_TOC01.png"
  cp BLANK.png "${filename}_TOC02.png"
done < filelist.txt

filelist.txt

Some title or Some Filename
End with empty row and only \n. Not \r

pdf2png.sh

#!/bin/bash

# Install necessary packages
sudo apt install -y poppler-utils imagemagick

# Loop through all PDF files in the current directory
find . -maxdepth 1 -name "*.pdf" -print0 | while IFS= read -r -d $'\0' pdf; do
  # Get the base filename without extension
  filename=$(basename "$pdf" .pdf)

  # Convert each page of the PDF to a PNG image with 400 DPI
  pdftoppm -png -r 400 "$pdf" "${filename}_%03d"

  # Convert PNG images to JPG if desired
  # mogrify -format jpg "${filename}_*.png"
  
  rm "$pdf"

done