Legacy ImageMagick Discussions Archive

Hi ,

My problem is that i don't see how to convert a png image with a transparent background and keeping it transparent.
With
transparency become black background.

If anyone can help.

Thank you

here is an example

create color image with transparent background

convert logo: -transparent white logot.png

change to gray with transparent background

convert logot.png -colorspace gray logotg.png

or

convert logot.png -channel RGBA -matte -colorspace gray logotg.png

It's working

thanks a lot

http://imagemagick.org/Usage/color/#grayscale
for many different ways!