[Magick-bugs] Regression: "convert image.png -type Palette image2.png" does not preserve transparency

[Thue Janus Kristensen]

The file generated by the latest version of imagemagick has a color
type of 6 in the header (truecolor & alpha according to wikipedia).

The old version of ImageMagick generated a file with a color type of 3
(indexed according to wikipedia).

According to Wikipedia it should be possible to create png images with
color type 3 and transparency.

Regards, Thue

On Fri, May 2, 2008 at 4:53 PM, Thue Janus Kristensen <thuejk at gmail.com> wrote:
> Thanks for the suggestion :).
>
>  That does generate a file with correct transparency.
>
>  But the program I am trying to use (ezpdf), which needs the palette
>  image as input, refuses to accept the generated image. It only accepts
>  palette images with transparency, like the ones generated by the old
>  version of imagemagick.
>
>  If your suggestion a workaround, and the bug real, or was the old
>  functionality a mistake?
>
>  Regards, Thue
>
>
>
>  On Fri, May 2, 2008 at 4:31 PM,
>  <duc.sequere.aut.de.via.decede at imagemagick.org> wrote:
>  > > Convert does not preserve transparency when using a command such as
>  >
>  >  Try
>  >
>  >   convert image.png -type PaletteMatte image2.png
>  >
>