Here are just a few examples of what ImageMagick can do: ImageMagick supports many image formats (over 90 major formats) including formats like GIF, JPEG, JPEG-2000, PNG, PDF, PhotoCD, TIFF, and DPX. This makes it possible to modify or create images automatically and dynamically. Most of the functionality of ImageMagick can be used interactively from the command line more often, however, the features are used from programs written in the programming languages C, Ch, C++, Java, Perl, PHP, Python, Ruby, Tcl/Tk, for which ready-made ImageMagick interfaces ( PerlMagick, Magick++, PythonMagick, MagickWand for PHP, RMagick, TclMagick, and JMagick) are available.
#IMAGEMAGICK FULL#
ImageMagick is free software: it is delivered with full source code and can be freely used, copied, modified and distributed. Images can be cropped, colors can be changed, various effects can be applied, images can be rotated and combined, and text, lines, polygons, ellipses and Bézier curves can be added to images and stretched and rotated. It can read, convert and write images in a large variety of formats.
#IMAGEMAGICK SOFTWARE#
ImageMagick® is a free software suite to create, edit, and compose bitmap images. The “basename” strips the suffix.PythonMagick is the Python binding of the ImageMagick library. To reduce png file's size when reducing color, use -depth for values of ” to stand for file name. Note that reducing colors does not necessarily reduce file size. To reduce color without dithering, use +dither instead of -dither. Reduce color convert -dither -colors 256 old.png new.png That makes it 8 bits.įor clean black and white line art, you can use “-depth 2”. In particular, for a grayscale line art in png, you can do:Ĭonvert -depth 8 old.png new.png. The pattern parameter changes the shape of the segmentation for the given number of levels. The image is smoothed and then multiplied by a grayscale version of the image with the desired number of levels to produce the segmented appearance. Note: this does not force the png image format to use indexed color for smaller file size. Creates a cartoon-like appearance to an image. Transparency, Color, Bits Per Pixel remove transparency/alpha with white convert -flatten old.png new.png to gray scale convert -type Grayscale old.png new.png The above increase color saturation by the multiplier 130%. saturation convert -modulate 100,130,100 old.png new.png The 3 numbers means: brightness, saturation, hue. The above increase brightness by the multiplier 150%. Color, Brightness, Saturation… brightness convert -modulate 150,100,100 old.png new.png To crop by specifying percentage of sides to cut, use “-shave”. The x and y axes's origin starts at the upper left corner. The 0 is the offset on x-axis, and 56 is the offset of y-axis. The 853 and 368 would be the new image's width and height. Scale, Crop scale convert -scale 50% old.gif new.png autocrop convert -trim cat.png cat.png crop convert -crop 853x368+0+56 old.png new.png Each time you save to JPG, it loses some info. ForĮxample, converting from png to gif may loseĬolors because gif only support a max of 256 colors.
The format you are converting from, otherwise you may lose info. Remember, the destination format should support all the features of Jpg png Conversion gif to png convert p1.gif p2.png png to jpg convert -scale 50% -quality 80% old.png new.jpg
#IMAGEMAGICK HOW TO#
This page shows you how to do common image editing tasks using the command line software
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