Option |
Description |
-antialias |
remove pixel-aliasing |
-authenticate value |
decrypt image with this password |
-backdrop |
background color |
-background color |
background color |
-border geometry |
surround image with a border of color |
-bordercolor color |
border color |
-channel type |
apply option to select image channels |
-clip |
clip along the first path from the 8BIM profile |
-clip-path id |
clip along a named path from the 8BIM profile |
-coalesce |
merge a sequence of images |
-colormap type |
Shared or Private |
-colors value |
preferred number of colors in the image |
-colorspace type |
alternate image colorspace |
-comment string |
annotate image with comment |
-compress type |
image compression type |
-contrast |
enhance or reduce the image contrast |
-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 |
-delay value |
display the next image after pausing |
-density geometry |
horizontal and vertical density of the image |
-depth value |
image depth |
-despeckle |
reduce the speckles within an image |
-display server |
get image or font from this X server |
-dispose method |
GIF disposal method |
-dither |
apply Floyd/Steinberg error diffusion to image |
-edge radius |
apply a filter to detect edges in the image |
-endian type |
endianness (MSB or LSB) of the image |
-enhance |
apply a digital filter to enhance a noisy image |
-extract geometry |
extract area from image |
-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 |
-frame geometry |
surround image with an ornamental border |
-gamma value |
level of gamma correction |
-geometry geometry |
preferred size or location of the image |
-help |
print program options |
–identify |
identify the format and characteristics of the image |
-immutable type |
prohibit image edits |
-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 |
-map filename |
transform image colors to match this set of colors |
-matte |
store matte channel if the image has one |
-mattecolor color |
frame color |
-monitor |
monitor progress |
-monochrome |
transform image to black and white |
-negate |
replace every pixel with its complementary color |
-page geometry |
size and location of an image canvas (setting) |
-profile filename |
add, delete, or apply an image profile |
-quiet |
suppress all error or warning messages |
-raise value |
lighten/darken image edges to create a 3-D effect |
-remote command |
execute a command in an remote display process |
-resize geometry |
resize the image |
-roll geometry |
roll an image vertically or horizontally |
-rotate degrees |
apply Paeth rotation to the image |
-sample geometry |
scale image with pixel sampling |
-sampling-factor geometry |
horizontal and vertical sampling factor |
-scene value |
image scene number |
-segment values |
segment an image |
-set attribute value |
set an image attribute |
-sharpen geometry |
sharpen the image |
-size geometry |
width and height of image |
-strip |
strip image of all profiles and comments |
-support factor |
resize support: > 1.0 is blurry, < 1.0 is sharp |
-trim |
trim image edges |
-update seconds |
detect when image file is modified and redisplay |
-verbose |
print detailed information about the image |
-version |
print version information |
-virtual-pixel method |
access method for pixels outside the boundaries of the image |
-visual |
display image using this visual type |
-window id |
display image to background of this window |
-window-group id |
exit program when this window id is destroyed |
-write filename |
write images to this file |