Imagemagick Transparent

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A quick tutorial on using Imagemagick to remove a background colour from images. The image file format needs to support transparency e.g. PNG.

NOTE: JPG doesnt support transparency, so it would be necessary to convert the file.

Remove background color

  1. Set the input file
  1. Set the output file
  1. Set the background color to remove
  1. Set the background to transparent and remove the colour white
1convert $input -transparent $background_color $output 

In the above the input image has a white background. Use Imagemagick to remove the white from the input image. The resulting image is written to the output file.