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Convert

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Usage: convert [options ...] file [ files... ] output_file

Where options include:
-adjoin join images into a single multi-image file
-align type Left, Center, Right
-append append a set of images
-average average a set of images
-blur factor apply a filter to blur the image
-border geometry surround image with a border of color
-box color color for annotation bounding box
-charcoal factor simulate a charcoal drawing
-colorize value colorize the image with the pen color
-colors value preferred number of colors in the image
-colorspace type alternate image colorspace
-comment string annotate image with comment
-compress type None, JPEG, LZW, RunlengthEncoded, or Zip
-contrast enhance or reduce the image contrast
-crop geometry preferred size and location of the cropped image
-cycle amount cycle the image colormap
-delay value display the next image after pausing
-density geometry vertical and horizontal density of the image
-despeckle reduce the speckles within an image
-display server obtain 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
-edge factor apply a filter to detect edges in the image
-emboss emboss an image
-enhance apply a digital filter to enhance a noisy image
-equalize perform histogram equalization to an image
-filter type use this filter when resizing an image
-flip flip image in the vertical direction
-flop flop image in the horizontal direction
-font name X11 font for displaying text
-frame geometry surround image with an ornamental border
-gamma value level of gamma correction
-geometry geometry perferred size or location of the image
-implode amount implode image pixels about the center
-interlace type None, Line, Plane, or Partition
-label name assign a label to an image
-layer type Red, Green, Blue, Matte
-linewidth value width of line in pixels
-label name assign a label to an image
-loop iterations add Netscape loop extension to your GIF animation
-map filename transform image colors to match this set of colors
-matte store matte channel if the image has one
-modulate value vary the brightness, saturation, and hue
-monochrome transform image to black and white
-negate apply color inversion to image
-noise add or reduce noise in an image
-normalize transform image to span the full range of colors
-opaque color change this color to the pen color
-page geometry size and location of an image canvas
-paint radius simulate an oil painting
-pen color color for annotating or changing opaque color
-pointsize value pointsize of Postscript font
-quality value JPEG/MIFF/PNG compression level
-raise value lighten/darken image edges to create a 3-D effect
-region geometry apply options to a portion of 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
-scene value image scene number
-segment values segment an image
-seed value pseudo-random number generator seed value
-shade degrees shade the image using a distant light source
-sharpen factor apply a filter to sharpen the image
-shear geometry slide one edge of the image along the X or Y axis
-size geometry width and height of image
-solarize thresold negate all pixels above the threshold level
-spread amount displace image pixels by a random amount
-swirl degrees swirl image pixels about the center
-texture filename name of texture to tile onto the image background
-threshold value threshold the image
-transparent color make this color transparent within the image
-treedepth value depth of the color classification tree
-undercolor geometry control undercolor removal and black generation
-verbose print detailed information about the image
-view FlashPix viewing transforms
-wave geometry alter an image along a sine wave

By default, the image format of `file' is determined by its magic
number. To specify a particular image format, precede the filename
with an image format name and a colon (i.e. ps:image) or specify the
image type as the filename suffix (i.e. image.ps). Specify 'file' as
'-' for standard input or output.

The following image formats are recognized:

Tag Description
------------------------------------------------------------
AVS AVS X image file.
BMP Microsoft Windows bitmap image file.
BMP24 Microsoft Windows 24-bit bitmap image file.
CMYK Raw cyan, magenta, yellow, and black bytes.
DCX ZSoft IBM PC multi-page Paintbrush file
DIB Microsoft Windows bitmap image file.
EPS Adobe Encapsulated PostScript file.
EPS2 Adobe Level II Encapsulated PostScript file.
EPSF Adobe Encapsulated PostScript file.
EPSI Adobe Encapsulated PostScript Interchange format.
FAX Group 3.
FIG TransFig image format.
FITS Flexible Image Transport System.
FPX FlashPix Format.
GIF CompuServe graphics interchange format; 8-bit color.
GIF87 CompuServe graphics interchange format; 8-bit color (version 87a).
GRADATION gradual passing from one shade to another.
GRANITE granite texture.
GRAY Raw gray bytes.
HDF Hierarchical Data Format.
HISTOGRAM
HTML Hypertext Markup Language with a client-side image map
JBIG Joint Bi-level Image experts Group file interchange format.
JPEG Joint Photographic Experts Group JFIF format; compressed 24-bit color.
MAP colormap intensities and indices.
MATTE Raw matte bytes.
MIFF Magick image file format.
MONO Bi-level bitmap in least-significant-byte (LSB) first order.
MPEG Motion Picture Experts Group file interchange format.
MTV MTV Raytracing image format.
M2V Motion Picture Experts Group file interchange format (version 2).
NETSCAPE Netscape 216 color cube.
NULL NULL image.
PBM Portable bitmap format (black and white).
PCD Photo CD.
PCDS Photo CD. Decode with the sRGB color table
PCX ZSoft IBM PC Paintbrush file.
PDF Portable Document Format.
PGM Portable graymap format (gray scale).
PICT Apple Macintosh QuickDraw/PICT file.
PIX Alias/Wavefront RLE image format.
PLASMA plasma fractal image.
PNG Portable Network Graphics.
PNM Portable anymap.
PPM Portable pixmap format (color).
PREVIEW
PS Adobe PostScript file.
PSD Adobe Photoshop bitmap file.
PS2 Adobe Level II PostScript file.
RAD Radiance image file.
RGB Raw red, green, and blue bytes.
RGBA Raw red, green, blue, and matte bytes.
RLA Alias/Wavefront image file; read only.
RLE Utah Run length encoded image file; read only.
SGI Irix RGB image file.
SUN SUN Rasterfile.
TEXT raw text file; read only.
TGA Truevision Targa image file.
TIFF Tagged Image File Format.
TIFF24
24-bit Tagged Image File Format.
TILE tile image with a texture.
TIM PSX TIM file.
TTF TrueType font file.
UYVY 16bit/pixel interleaved YUV.
UIL X-Motif UIL table.
VICAR read only.
VID Visual Image Directory.
VIFF Khoros Visualization image file.
WIN select image from or display image to your computer screen.
X select image from or display image to your X server screen.
XC constant image of X server color.
XBM X Windows system bitmap, black and white only.
XPM X Windows system pixmap file (color).
XWD X Windows system window dump file (color).
YUV CCIR 601 4:1:1 file.
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Last updated on July 17, 2003