We need to perform various operations on a existing PDF. For them we are using Aspose pdf. These operations are: certified signature, including custom metadata, mark text with different fonts (PDFNEWNET-39386) and turn PDFA or encrypt the document.
Currently we do with other dll and do it all on the same document without saving open on each operation, but with Aspose we can not or do not know.
Is it possible to do this in memory without saving the document in each operation to keep the changes?