FUNCTION
convert (create new image)
mogrify (modify image)
identify (read image metadata)
OPTION and GEOMETRY
NOTE: Options can be run multiple times in a single command.
+append %f %f2 %fout.ext (append right)
-append %f %f2 %fout.ext (append down)
-colorspace gray
-crop
-fill (choose fill color)
-flip (mirror ^v)
-flop (mirror <>)
-monochrome (black and white, no grayscale)
-resize
-rotate (clockwise;fills non-90 multiple with whitespace)
-trim (remove excess border space such as whitespace)
GEOMETRY
50%x 50% the width
50%x20% 50% of the width and 20% of the height
x20% 20% of the height
-10-20 10 pixels from the right, 20 from the bottom
+10+20 10 pixels from the left, 20 from the top
EXAMPLE
convert -crop +10+10 -crop -10-10 -trim (remove 10 pixels from each side and trim the result)
identify -verbose %f|grep comment|less (read comments in less)
