# Make thumbnail of an image
gm convert -size 120x120 a.jpg -resize 120x120 +profile "*" thumbnail.jpg
# Report image info
gm identify -verbose a.jpg1 min read
# Make thumbnail of an image
gm convert -size 120x120 a.jpg -resize 120x120 +profile "*" thumbnail.jpg
# Report image info
gm identify -verbose a.jpg