Split one multipage PDF file into multiple one page pdfs using PdfSharp

PdfSplitter.cs

private List<byte[]> SplitPDFIntoByteArrays(byte[] pdfByteArray)
{
    var pageByteArrays = new List<byte[]>();

    using (var pdfStream = new System.IO.MemoryStream(pdfByteArray))
    {
        var pdfDocument = PdfReader.Open(pdfStream, PdfDocumentOpenMode.Import);

        for (var pageNum = 0; pageNum < pdfDocument.PageCount; pageNum++)
        {
            using (var pageStream = new System.IO.MemoryStream())
            {
                var outputDocument = new PdfDocument();
                outputDocument.AddPage(pdfDocument.Pages[pageNum]);

                outputDocument.Save(pageStream);

                pageByteArrays.Add(pageStream.ToArray());
            }
        }
    }

    return pageByteArrays;
}