Perform simple operations on images and animated GIFs.
List images with their dimensions.
Options:
-r, -R - Recursively list images in subdirectories encountered.
Sample output:
$ listimages .
Width Height Left Top Right Bottom Frames Name
98 110 0 0 0 0 4 ./000 Reimu.gif
128 118 0 0 0 0 4 ./001 Marisa.gif
512 512 0 0 0 0 ./lena.png
258 200 0 0 0 0 ./RGB_24bits_palette_color_test_chart.png
150 200 0 0 0 0 ./RGB_24bits_palette_sample_image.jpg
224 56 2 2 6 2 ./sisters-in-name.png
56 56 3 2 5 2 ./too-school-for-cool.png
375 230 0 0 0 0 8 ./xFRcRZI.gif
3000 230 0 0 0 0 ./xFRcRZI.gif.png
total 9
Width Height Left Top Right Bottom Frames Name
56 56 0 0 0 0 (min)
3000 512 3 2 6 2 (max)
Perform simple transformations on images and animated GIFs.
Options for transformations:
-a, --addmargin top left bottom right - Adds the specified number of empty pixels to each edge of the image.
-b, --backgroundcolor color - Renders the image on top of the specified background color. Color must be a string of 3, 4, 6, or 8 hexadecimal digits. (Not currently supported for GIFs.)
-c, --canvassize width height anchor - Changes the width and height of the image without scaling the image. Anchor is NW, N, NE, E, SE, S, SW, W, or CENTER.
-d, --flipdiagonal - Flips the image about its diagonal, i.e. swaps the x and y axes.
-g, --grayscale - Converts the image to grayscale according to the following formula: gray = 0.30 * red + 0.59 * green + 0.11 * blue
-h, --fliphorizontal - Flips the image horizontally, i.e. about the vertical axis.
-i, --invert - Inverts the colors of the image.
-j, --invertgrays threshold - Inverts each color of the image only if it is sufficiently desaturated. Threshold varies from 0 (invert nothing) to 256 (invert everything).
-k, --colorize color - Recolors the image using tints and shades of the specified color. Color must be a string of 3, 4, 6, or 8 hexadecimal digits.
-l, --rotateleft - Rotates the image counter-clockwise. Alias for --flipdiagonal --flipvertical.
-m, --removemargin top left bottom right - Removes the specified number of pixels from each edge of the image.
-p, --pebble - Converts the colors of the image to the Pebble color palette.
-r, --rotateright - Rotates the image clockwise. Alias for --flipdiagonal --fliphorizontal.
-s, --scale sx sy - Scales the image by the specified factors horizontally and vertically.
-t, --trim top left bottom right - Removes transparent pixels from the specified edges of the image. Each parameter is either TRUE or FALSE.
-u, --rotate180 - Rotates the image 180 degrees. Alias for --fliphorizontal --flipvertical.
-v, --flipvertical - Flips the image vertically, i.e. about the horizontal axis.
-w, --websafe - Converts the colors of the image to the web-safe color palette.
-x, --speed multiplier - Speeds up or slows down an animation. Has no effect on static images.
-z, --imagesize width height - Scales the image to the specified width and height.
Options for output:
-f, --format format - Specifies the output format of the transformed image. Default is gif if the original is gif or png otherwise.
-o, --output path - Specifies the output file or directory path for the transformed image.
Convert between static images and animated GIFs.
Options for input:
-ica, --inputcellanchor anchor - Sets the position of images read from a directory. Anchor is NW, N, NE, E, SE, S, SW, W, or CENTER.
-icb, --inputcellorigin x y - Determines the position of the first frame within a static image.
-ics, --inputcellsize width height - Determines the width and height of each frame within a static image.
-icd, --inputcelldelta dx dy - Determines the X and Y offset between each frame within a static image.
-icc, --inputcellcount columns rows - Determines the number of frames horizontally and vertically.
-ico, --inputcellorder order - Determines the ordering of frames (LTR-TTB, TTB-LTR, etc.).
Options for transformations:
-D, --durations list of frame durations - Sets the duration of each frame in the final output, e.g. "1;0.5;3.14" to set the duration of frames 1, 2, and 3 to one second, half a second, and 3.14 seconds, respectively. The list is repeated until the number of frames in the animation is reached when applied.
-F, --frames list of frame indices - Determines which frames will appear in the final output, e.g. "1-4;7;2" for frames 1, 2, 3, 4, 7, and 2 again, in that order.
All of the options for transformations used with TransformImages can also be used with ConvertAnimation.
Options for output:
-f, --format format - Specifies the output format of the converted animation. Default is "d" for a directory of still frames.
-n, --loopcount count - Specifies the number of times an animation loops (for animated GIFs).
-o, --output path - Specifies the output file or directory path for the converted animation.
-ocb, --outputcellorigin x y - Determines the position of the first frame within a static image.
-ocd, --outputcelldelta dx dy - Determines the X and Y offset between each frame within a static image.
-occ, --outputcellcount columns rows - Determines the number of frames horizontally and vertically.
-oco, --outputcellorder order - Determines the ordering of frames (LTR-TTB, TTB-LTR, etc.).
-ois, --outputimagesize width height - Determines the total width and height of the static image.