Use the `convert` program to convert between image formats as well as resize an image, blur, crop, despeckle, dither, draw on, flip, join, re-sample, and much more. See Command Line Processing for advice on how to structure your `convert` command or see below for example usages of the command. ## Example Usage We list a few examples of the `convert` command here to illustrate its usefulness and ease of use. To get started, lets convert an image in the JPEG format to PNG:
      convert rose.jpg rose.png
Next, we reduce the image size before it is written to the PNG format:
      convert rose.jpg -resize 50% rose.png
You can combine multiple image-processing operations to produce complex results:
      convert -size 320x85 xc:transparent -font Bookman-DemiItalic -pointsize 72 -draw "text 25,60 'Magick'" \
        -channel RGBA -gaussian 0x6 -fill darkred -stroke magenta -draw "text 20,55 'Magick'" fuzzy-magick.png
You can find additional examples of using `convert` in Graphics from the Command Line. Further discussion is available in More Graphics from the Command Line and Examples of ImageMagick Usage. ## Option Summary The `convert` command recognizes these options. Click on an option to get more details about how that option works.
Option | Description
--- | ---
–adjoin | join images into a single multi-image file
–affine matrix | affine transform matrix
–annotate geometry text | annotate the image with text
–antialias | remove pixel-aliasing
–append | append an image sequence
–authenticate value | decrypt image with this password
–average | average an image sequence
–background color | background color
–bias value | add bias when convolving an image
–black-threshold value | forces all pixels below the threshold into black
–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
–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-path id | clip along a named path from the 8BIM profile
–clone index | clone an 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 | alternate 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
–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 | GIF disposal method
–dither | apply Floyd/Steinberg 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
–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 | gaussian blur an image
–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
–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
–label name | assign a label to an image
–lat geometry | local adaptive thresholding
–level value | adjust the level of image contrast
–limit type value | pixel cache resource limit
–log format | format of debugging information
–loop iterations | add Netscape loop extension to your GIF animation
–map filename | transform image colors to match this set of colors
–mask filename | set the image clip mask
–matte | store matte channel if the image has one
–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
–mosaic | create a mosaic from 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
–posterize levels | reduce the image to a limited number of color levels
–preview type | image preview type
–profile filename | add, delete, or apply an image profile
–quality value | JPEG/MIFF/PNG compression level
–quiet | suppress all error or 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
–red-primary point | chromaticity red primary point
–region geometry | apply options to a portion of the image
–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
–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 | pseudo-random number generator seed value
–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 | image lightness rescaling using sigmoidal contrast enhancement
–size geometry | width and height of image
–solarize threshold | negate all pixels above the threshold level
–splice geometry | splice the background color into the image
–spread amount | 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
–support factor | resize support: > 1.0 is blurry, < 1.0 is sharp
–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
–tint value | tint the image with the fill color
–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
–undercolor color | annotation bounding box 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 | forces all pixels above the threshold into white
–write filename | write images to this file

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