Ai to Png background transparency

[paulius-petkus]

Magick.NET version

14.0.0

Environment (Operating system, version and so on)

Windows, .Net 6

Description

Library fails to preserve transparent background when saving AI image to PNG. It becomes white.

We try to set background transparent:

image.Settings.BackgroundColor = MagickColors.Transparent;
using var fs = File.Create(Path.Combine(OutDirectory, $"{fileName}.{MagickFormat.ToString().ToLower()}"));
image.Write(fs, MagickFormat);

attaching zipped ai image:

mhf09hehc8_iuj4n2.zip

Steps to Reproduce

Save image as png.

[dlemstra]

This is happening due to a limitation of Ghostscript library. They don't support CMYKA and we will read the file as CMYK. You can work around this by reading the image in the sRGB colorspace:

var settings = new MagickReadSettings
{
    ColorSpace = ColorSpace.sRGB,
};

using var image = new MagickImage("mhf09hehc8_iuj4n2.ai", settings);
image.Write("mhf09hehc8_iuj4n2.png");

[paulius-petkus]

Thank you very much. I have just tested - works fine.

…

On Thu, Oct 3, 2024 at 11:40 PM Dirk Lemstra ***@***.***> wrote: This is happening due to a limitation of Ghostscript library. They don't support CMYKA and we will read the file as CMYK. You can work around this by reading the image in the sRGB colorspace: var settings = new MagickReadSettings{ ColorSpace = ColorSpace.sRGB,}; using var image = new MagickImage("mhf09hehc8_iuj4n2.ai", settings); image.Write("mhf09hehc8_iuj4n2.png"); — Reply to this email directly, view it on GitHub <#1728 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/BGWROFZ7QJB3K5W5CBLNTFLZZWTTJAVCNFSM6AAAAABPJJVRM2VHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDGOJSGI4TENRUG4> . You are receiving this because you authored the thread.Message ID: ***@***.***>