One Piece scans without ads

onepiece.sh

#!/bin/bash
# Download the latest one piece chapter and aggregate each scan inside a PDF
#
# Prerequirements: 
# - sudo apt install img2pdf ocrmypdf
# - internet access

if [ -z $1 ]; then
    echo "You need to provide a chapter number"
    exit 1
fi

for i in {01..30}; do
    url="https://lelscans.net/mangas/one-piece/$1/$i.jpg"
    curl -sf $url -o onepiece_$1_$i.jpg
done

echo "Scan retrieved."

img2pdf onepiece_$1_*.jpg --output $1.pdf
echo "PDF generated"

# taking too much time
# ocrmypdf combined_$1.pdf $1.pdf

rm onepiece_$1_*.jpg