Unable to write ICO files with transparency

[eyebex]

Hi,

I can't get the output of ICO files with a transparent background color to work correctly with NConvert 0.61 on Mac OS X. I'm using this vector graphic for input. The command line I'm using is

Code: Select all

nconvert -out ico -o nconvert-git.ico -transparent 0 -colors 256 -resize 256 256 Git-Icon-1788C.eps

which gives me a white opaque background. However, if I just change the output format to PNG like this

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nconvert -out png -o nconvert-git.png -transparent 0 -colors 256 -resize 256 256 Git-Icon-1788C.eps

The output has palette-index based transparency. Any way to get this working for ICO output, too?

Thanks!

[eyebex]

Ah, it seems the ICO file in fact has a transparent background, at least Gimp is showing it. But XnView MP does not show the transparent background for the ICO file, although it does for the PNG file, which is why I thought there would be no transparency.

[xnview]

The output has palette-index based transparency. Any way to get this working for ICO output, too?

Currently, you can only save ico 32bits to have transparency

[eyebex]

Thanks, are there plans to change that any time soon?