I am looking at the API reference, which shows that the PDFDocument constructor takes a stream or a byte array, as of version Version: 3.1.9.5020, if I understand correctly:
.../Tutorials/API/Spire.PDF/Spire.Pdf.html
I have free version 3.2.52.56040 installed. The PDFDocument constructor does not seem to accept a byte array or a stream, and its Load methods are FromFile and FromHtml and FromXPS.
Is this stream|byte constructor available only in the Paid version?