| Option | Description | 
  
    | -adaptive-blur geometry | adaptively blur pixels; decrease effect near edges | 
  
    | -adaptive-resize geometry | adaptively resize image with data dependent triangulation. | 
  
    | -adaptive-sharpen geometry | adaptively sharpen pixels; increase effect near edges | 
  
    | -adjoin | join images into a single multi-image file | 
  
    | -affine matrix | affine transform matrix | 
  
    | -alpha | activate, deactivate, reset, or set the alpha channel | 
  
    | -annotate geometry text | annotate the image with text | 
  
    | -antialias | remove pixel-aliasing | 
  
    | -append | append an image sequence | 
  
    | -authenticate value | decipher image with this password | 
  
    | -average | average an image sequence | 
  
    | -background color | background color | 
  
    | -bench iterations | measure performance | 
  
    | -bias value | add bias when convolving an image | 
  
    | -black-threshold value | force all pixels below the threshold into black | 
  
    | -blue-primary point | chromaticity blue primary point | 
  
    | -blur geometry | reduce image noise and reduce detail levels | 
  
    | -border geometry | surround image with a border of color | 
  
    | -bordercolor color | border color | 
  
    | -caption string | assign a caption to an image | 
  
    | -channel type | apply option to select image channels | 
  
    | -charcoal radius | simulate a charcoal drawing | 
  
    | -chop geometry | remove pixels from the image interior | 
  
    | -clip | clip along the first path from the 8BIM profile | 
  
    | -clip-mask filename | associate clip mask with the image | 
  
    | -clip-path id | clip along a named path from the 8BIM profile | 
  
    | -clone index | clone an image | 
  
    | -clut | apply a color lookup table to the image | 
  
    | -contrast-stretch geometry | improve the contrast in an image by `stretching' the range of intensity value | 
  
    | -coalesce | merge a sequence of images | 
  
    | -colorize value | colorize the image with the fill color | 
  
    | -colors value | preferred number of colors in the image | 
  
    | -colorspace type | set image colorspace | 
  
    | -combine | combine a sequence of images | 
  
    | -comment string | annotate image with comment | 
  
    | -compose operator | set image composite operator | 
  
    | -composite | composite image | 
  
    | -compress type | image compression type | 
  
    | -contrast | enhance or reduce the image contrast | 
  
    | -convolve coefficients | apply a convolution kernel to the image | 
  
    | -crop geometry | crop the image | 
  
    | -cycle amount | cycle the image colormap | 
  
    | -decipher filename | convert cipher pixels to plain | 
  
    | -debug events | display copious debugging information | 
  
    | -define format:option | define one or more image format options | 
  
    | -deconstruct | break down an image sequence into constituent parts | 
  
    | -delay value | display the next image after pausing | 
  
    | -delete index | delete the image from the image sequence | 
  
    | -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 | layer disposal method | 
  
    | -distort type coefficients | distort image | 
  
    | -dither  method | apply error diffusion to image | 
  
    | -draw string | annotate the image with a graphic primitive | 
  
    | -edge radius | apply a filter to detect edges in the image | 
  
    | -emboss radius | emboss an image | 
  
    | -encipher filename | convert plain pixels to cipher pixels | 
  
    | -encoding type | text encoding type | 
  
    | -endian type | endianness (MSB or LSB) of the image | 
  
    | -enhance | apply a digital filter to enhance a noisy image | 
  
    | -equalize | perform histogram equalization to an image | 
  
    | -evaluate operator value | evaluate an arithmetic, relational, or logical expression | 
  
    | -extent geometry | set the image size | 
  
    | -extract geometry | extract area from image | 
  
    | -family name | render text with this font family | 
  
    | -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 | 
  
    | -floodfill geometry color | floodfill the image with color | 
  
    | -flop | flop image in the horizontal direction | 
  
    | -font name | render text with this font | 
  
    | -format string | output formatted image characteristics | 
  
    | -frame geometry | surround image with an ornamental border | 
  
    | -fuzz distance | colors within this distance are considered equal | 
  
    | -fx expression | apply mathematical expression to an image channel(s) | 
  
    | -gamma value | level of gamma correction | 
  
    | -gaussian geometry | reduce image noise and reduce detail levels | 
  
    | -geometry geometry | preferred 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 | 
  
    | -implode amount | implode image pixels about the center | 
  
    | -insert index | insert last image into the image sequence | 
  
    | -intent type | type of rendering intent when managing the image color | 
  
    | -interlace type | type of image interlacing scheme | 
  
    | -interpolate method | pixel color interpolation method | 
  
    | -label string | assign a label to an image | 
  
    | -lat geometry | local adaptive thresholding | 
  
    | -layers method | optimize or compare image layers | 
  
  
    | -level value | adjust the level of image contrast | 
  
    | -limit type value | pixel cache resource limit | 
  
    | -linear-stretch geometry | linear with saturation histogram stretch | 
  
    | -liquid-rescale geometry | rescale image with seam-carving | 
  
    | -log format | format of debugging information | 
  
    | -loop iterations | add Netscape loop extension to your GIF animation | 
  
    | -mask filename | associate a mask with the image | 
  
    | -mattecolor color | frame color | 
  
    | -median radius | apply a median filter to the image | 
  
    | -modulate value | vary the brightness, saturation, and hue | 
  
    | -monitor | monitor progress | 
  
    | -monochrome | transform image to black and white | 
  
    | -morph value | morph an image sequence | 
  
    | -motion-blur geometry | simulate motion blur | 
  
    | -negate | replace every pixel with its complementary color | 
  
    | -noise radius | add or reduce noise in an image | 
  
    | -normalize | transform image to span the full range of colors | 
  
    | -opaque color | change this color to the fill color | 
  
    | -ordered-dither NxN | ordered dither the image | 
  
    | -orient type | image orientation | 
  
    | -page geometry | size and location of an image canvas (setting) | 
  
    | -paint radius | simulate an oil painting | 
  
    | -ping | efficiently determine image attributes | 
  
    | -pointsize value | font point size | 
  
    | -polaroid angle | simulate a Polaroid picture | 
  
    | -posterize levels | reduce the image to a limited number of color levels | 
  
    | -preview type | image preview type | 
  
    | -print string | interpret string and print to console | 
  
    | -process image-filter | process the image with a custom image filter | 
  
    | -profile filename | add, delete, or apply an image profile | 
  
    | -quality value | JPEG/MIFF/PNG compression level | 
  
    | -quantize colorspace | reduce image colors in this colorspace | 
  
    | -quiet | suppress all warning messages | 
  
    | -radial-blur angle | radial blur the image | 
  
    | -raise value | lighten/darken image edges to create a 3-D effect | 
  
    | -random-threshold low,high | random threshold the image | 
  
    | -recolor matrix | translate, scale, shear, or rotate image colors. | 
  
    | -red-primary point | chromaticity red primary point | 
  
    | -regard-warnings | pay attention to warning messages. | 
  
    | -region geometry | apply options to a portion of the image | 
  
    | -remap filename | transform image colors to match this set of colors | 
  
    | -render | render vector graphics | 
  
    | -repage geometry | size and location of an image canvas | 
  
    | -resample geometry | change the resolution of an image | 
  
    | -resize geometry | resize the image | 
  
    | -respect-parenthesis | settings remain in effect until parenthesis boundary. | 
  
    | -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 | 
  
    | -scale geometry | scale the image | 
  
    | -scene value | image scene number | 
  
    | -seed value | seed a new sequence of pseudo-random numbers | 
  
    | -segment values | segment an image | 
  
    | -separate | separate an image channel into a grayscale image | 
  
    | -sepia-tone threshold | simulate a sepia-toned photo | 
  
    | -set attribute value | set an image attribute | 
  
    | -shade degrees | shade the image using a distant light source | 
  
    | -shadow geometry | simulate an image shadow | 
  
    | -sharpen geometry | sharpen the image | 
  
    | -shave geometry | shave pixels from the image edges | 
  
    | -shear geometry | slide one edge of the image along the X or Y axis | 
  
    | -sigmoidal-contrast geometry | increase the contrast without saturating highlights or shadows | 
  
    | -size geometry | width and height of image | 
  
    | -sketch geometry | simulate a pencil sketch | 
  
    | -solarize threshold | negate all pixels above the threshold level | 
  
    | -splice geometry | splice the background color into the image | 
  
    | -spread radius | displace image pixels by a random amount | 
  
    | -strip | strip image of all profiles and comments | 
  
    | -stroke color | graphic primitive stroke color | 
  
    | -strokewidth value | graphic primitive stroke width | 
  
    | -stretch type | render text with this font stretch | 
  
    | -style type | render text with this font style | 
  
    | -swap indexes | swap two images in the image sequence | 
  
    | -swirl degrees | swirl image pixels about the center | 
  
    | -texture filename | name of texture to tile onto the image background | 
  
    | -threshold value | threshold the image | 
  
    | -thumbnail geometry | create a thumbnail of the image | 
  
    | -tile filename | tile image when filling a graphic primitive | 
  
    | -tile-offset geometry | set the image tile offset | 
  
    | -tint value | tint the image with the fill color | 
  
    | -transform | affine transform image | 
  
    | -transparent color | make this color transparent within the image | 
  
    | -transparent-color color | transparent color | 
  
    | -transpose | flip image in the vertical direction and rotate 90 degrees | 
  
    | -transverse | flop image in the horizontal direction and rotate 270 degrees | 
  
    | -treedepth value | color tree depth | 
  
    | -trim | trim image edges | 
  
    | -type type | image type | 
  
    | -undercolor color | annotation bounding box color | 
  
    | -unique-colors | discard all but one of any pixel color. | 
  
    | -units type | the units of image resolution | 
  
    | -unsharp geometry | sharpen the image | 
  
    | -verbose | print detailed information about the image | 
  
    | -version | print version information | 
  
    | -view | FlashPix viewing transforms | 
  
    | -vignette geometry | soften the edges of the image in vignette style | 
  
    | -virtual-pixel method | access method for pixels outside the boundaries of the image | 
  
    | -wave geometry | alter an image along a sine wave | 
  
    | -weight type | render text with this font weight | 
  
    | -white-point point | chromaticity white point | 
  
    | -white-threshold value | force all pixels above the threshold into white | 
  
    | -write filename | write images to this file |