public static IDictionary <int, byte[]> ConvertPdfToPng(byte[] pdfBytes, RenderType type, int pageNumber, bool antiAlias = false, float dpi = 150, Size size = new Size(), string password = "")
{
if (pdfBytes == null || pdfBytes.Length.Equals(0))
{
throw new ArgumentNullException(nameof(pdfBytes));
}
var output = new ConcurrentDictionary <int, byte[]>();
var pageStart = pageNumber;
var pageEnd = pageNumber + 1;
using (MuPDF pdfDoc = new MuPDF(pdfBytes, password))
{
pdfDoc.Page = pageNumber;
pdfDoc.AntiAlias = antiAlias && !type.Equals(RenderType.Monochrome); // no point in anti-alias-ing with Monochrome
using (MemoryStream outputStream = new MemoryStream())
{
var width = 0;
var height = 0;
var maxSize = 1000;
using (var bitmap = ResizeImage(size, pdfDoc.GetBitmap(width, height, dpi, dpi, 0, type, false, false, maxSize)))
{
bitmap.Save(outputStream, ImageFormat.Png);
output.TryAdd(pageNumber, outputStream.ToArray());
}
}
}
return(output.ToDictionary(kvp => kvp.Key, kvp => kvp.Value));
}
