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Posted By

deepsoul on 11/01/09

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Last Edited at 11/01/09 01:53pm

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Replace background colour

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When you put an image in a printable document, you don't want it to have black (or coloured) background. ImageMagick allows to replace colours even when the coloured regions are non-contiguous. Arbitrary colour values can be specified with `\#123456` (the backslash is for escaping the #). If you want to replace similar colours as well, use the `-fuzz` option.

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Copy this code and paste it in your HTML 
  1. convert blackbackground.png -fill white -opaque black whitebackground.png
  2. convert bluebackground.png -fill white -opaque \#200070 whitebackground.png

URL: http://www.imagemagick.org/Usage/color/#replace

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