- install rename
brew install rename (osx)
sudo pacman -S perl-rename (arch linux)
- rename
rename -e 's/\d+/sprintf("%03d",$&)/e' -- *.jpg
- Convert optimized pdf
ocrmypdf --tesseract-timeout 0 --jbig2-lossy --optimize 3 --deskew --clean-final ap_png.pdf ap_jbig2.pdf