(If you want to screenshot first, and want to rotate the screen: xrandr -o left (and use xrandr -o normal to return to regular view).)
Open Terminal in the folder with all the images and
convert *.png -shave 90x280 shaved*.png(If you want to screenshot first, and want to rotate the screen: xrandr -o left (and use xrandr -o normal to return to regular view).)
Open Terminal in the folder with all the images and
convert *.png -shave 90x280 shaved*.png