| Option |
Description |
| -adjoin |
join images into a single multi-image file |
| -affine matrix |
affine transform matrix |
| -annotate geometry text |
annotate the image with text |
| -authenticate value |
decrypt image with this password |
| -blue-primary point |
chromaticity blue primary point |
| -blur geometry |
blur the image |
| -border geometry |
surround image with a border of color |
| -bordercolor color |
border color |
| -channel type |
apply option to select image channels |
| -clone index |
clone an image |
| –coalesce |
merge a sequence of images |
| -colors value |
preferred number of colors in the image |
| -colorspace type |
alternate image colorspace |
| -comment string |
annotate image with comment |
| -compose operator |
set image composite operator |
| -compress type |
image compression type |
| -crop geometry |
preferred size and location of the cropped image |
| -debug events |
display copious debugging information |
| -define format:option |
define one or more image format options |
| -density geometry |
horizontal and vertical density of the image |
| -depth value |
image depth |
| -display server |
get image or font from this X server |
| -dispose method |
GIF disposal method |
| -dither |
apply Floyd/Steinberg error diffusion to image |
| -draw string |
annotate the image with a graphic primitive |
| -endian type |
endianness (MSB or LSB) of the image |
| -extract geometry |
extract area from image |
| -fill color |
color to use when filling a graphic primitive |
| -filter type |
use this filter when resizing an image |
| –flatten |
flatten a sequence of images |
| -flip |
flip image in the vertical direction |
| -flop |
flop image in the horizontal direction |
| -font name |
render text with this font |
| -frame geometry |
surround image with an ornamental border |
| -gamma value |
level of gamma correction |
| -geometry geometry |
perferred size or location of the image |
| -gravity type |
horizontal and vertical text placement |
| -green-primary point |
chromaticity green primary point |
| -help |
print program options |
| –identify |
identify the format and characteristics of the image |
| -interlace type |
type of image interlacing scheme |
| -label name |
assign a label to an image |
| -limit type value |
pixel cache resource limit |
| -log format |
format of debugging information |
| -matte |
store matte channel if the image has one |
| -mattecolor color |
frame color |
| -mode type |
framing style |
| -monitor |
monitor progress |
| -monochrome |
transform image to black and white |
| -page geometry |
size and location of an image canvas (setting) |
| -pointsize value |
font point size |
| -profile filename |
add, delete, or apply an image profile |
| -quality value |
JPEG/MIFF/PNG compression level |
| -quiet |
suppress all error or warning messages |
| -red-primary point |
chromaticity red primary point |
| -repage geometry |
size and location of an image canvas |
| -resize geometry |
resize the image |
| -rotate degrees |
apply Paeth rotation to the image |
| -sampling-factor geometry |
horizontal and vertical sampling factor |
| -scenesrange |
image scene range |
| -shadow geometry |
simulate an image shadow |
| -size geometry |
width and height of image |
| -strip |
strip image of all profiles and comments |
| -stroke color |
graphic primitive stroke color |
| -support factor |
resize support: > 1.0 is blurry, < 1.0 is sharp |
| -texture filename |
name of texture to tile onto the image background |
| -tile filename |
tile image when filling a graphic primitive |
| -transform |
affine transform image |
| -transparent color |
make this color transparent within the image |
| -treedepth value |
color tree depth |
| -trim |
trim image edges |
| -type type |
image type |
| –units type |
the units of image resolution |
| -verbose |
print detailed information about the image |
| -version |
print version information |
| -view |
FlashPix viewing transforms |
| -virtual-pixel method |
access method for pixels outside the boundaries of the image |
| -white-point point |
chromaticity white point |