Rendering all pages of a PDF file to PNG with the MuPDF Xamarin Android library

mupdf-xamarin-android-render-pdf.cs

var pdf = new MuPDFCore(this, pdfFilepath);
var cookie = new MuPDFCore.Cookie(pdf);
var count = pdf.CountPages();
 
for (int i = 0; i < count; i++)
{
    var size = pdf.GetPageSize(i);
 
    int pageWidth = (int)size.X;
    int pageHeight = (int)size.Y;
 
    var bitmap = Bitmap.CreateBitmap(ScreenWidth, ScreenHeight, Bitmap.Config.Argb8888);
    pdf.DrawPage(bitmap, i, pageWidth, pageHeight, 0, 0, ScreenWidth, ScreenHeight, cookie);
 
    String filename = String.Format("/mnt/sdcard/pdf-{0}.png", i);
    using (var fos = new FileStream(filename, FileMode.Create, FileAccess.ReadWrite))
    {
        bitmap.Compress(Bitmap.CompressFormat.Png, 100, fos);
    }
}