Rank: Newbie
Groups: Guest
Joined: 2/7/2019(UTC)
Posts: 9
Thanks: 6 times
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I'm asking for help again :) how to create cmyk tiff from cmyk pdf? I tried several methods, the shortest is: Code:using (var reader = new PdfReader(filePdf, V.pageDpi, V.pageDpi))
using (var writer = new TiffWriter(filePdf.Replace(".pdf", ".tiff")))
{
writer.Compression = CompressionType.Zip;
Pipeline.Run(reader + writer);
}
but I get a tiff file which has RGB colors...
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Rank: Advanced Member
Groups: Guest
Joined: 9/19/2006(UTC)
Posts: 505
Was thanked: 41 time(s) in 41 post(s)
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Hi, try this one: Code:using (var reader = new PdfReader(filePdf, dpi, dpi))
using (var writer = new TiffWriter(filePdf.Replace(".pdf", ".tiff")))
{
using (var content = reader.Frames[0].GetContent())
{
var format = content.GetPreferredPixelFormat();
using (var imageGenerator = new ImageGenerator(content, format, RgbColor.Transparent))
{
imageGenerator.ColorProfile = content.GetPreferredColorProfile(format.ColorSpace);
writer.Compression = CompressionType.Zip;
Pipeline.Run(imageGenerator + writer);
}
}
}
Getting preview images from PDF is RGB only. But it’s much faster, so I would recommend using it when possible. |
Best regards,
Eugene Kosmin
The Aurigma Development Team
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 1 user thanked Eugene Kosmin for this useful post.
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