User-603456352 posted
Make sure to run on 64bit. Running this as 32bit ‘only’ uses 2GB memory.
Document document;
using (FileStream fs = new FileStream(@"6810-b88d5dbf-371e-4197-baea-c0f678f91b40.pdf", FileMode.Open, FileAccess.Read))
{
document = new Document(fs);
}
double[] resolutions = {72d, 100d, 300d, 301d};
int i = 1;
foreach (Page page in document.Pages)
{
foreach (double resolution in resolutions)
{
ConvertToTiffOptions tiffOptions = new ConvertToTiffOptions(resolution, TiffCompression.Lzw);
tiffOptions.PixelFormat = PixelFormat.Rgba32Bpp;
using (FileStream fs = new FileStream(String.Format(CultureInfo.InvariantCulture, "ConvertToTiff_page{0}_{1}dpi.tiff", i, (int) resolution), FileMode.Create, FileAccess.Write))
{
page.ConvertToTiff(fs, tiffOptions);
}
using (Bitmap bitmap = new Bitmap((int) (page.Width * resolution / 72d + 0.5), (int) (page.Height * resolution / 72d + 0.5), System.Drawing.Imaging.PixelFormat.Format24bppRgb))
using (Graphics g = Graphics.FromImage(bitmap))
{
g.SmoothingMode = SmoothingMode.AntiAlias;
g.ScaleTransform((float) (resolution / 72d), (float) (resolution / 72d));
g.Clear(Color.White);
page.Draw(g);
bitmap.Save(String.Format(CultureInfo.InvariantCulture, "Draw_page{0}_{1}dpi.png", i, (int)resolution));
}
}
i++;
}
