Using Imagemagick to Create Contact Sheets

https://patdavid.net/2013/04/using-imagemagick-to-create-contact/

montage -verbose -label '%f' -font Helvetica -pointsize 10 -background '#000000' -fill 'gray' -define jpeg:size=200x200 -geometry 200x200+2+2 -auto-orient *.jpg montage.jpg