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Create a transparent image of given dimensions

 $ convert -size 100x100 xc:none transparency.png

— by Janos on July 31, 2013, 11:32 p.m.

Explanation

  • convert is a tool that's part of the ImageMagick image manipulation library
  • -size 100x100 specifies the dimensions of the image to create
  • xc:none is a symbolic source image, indicating to convert "from nothing"
  • transparency.png is the destination filename, the image format is automatically determined by the extension

Limitations

Requires the ImageMagick image manipulation library.