I'm trying to add a bookmark to a PDF using PyPDF2. I run the following with no problems. But a bookmark is never created. Any thoughts on what I'm doing wrong. The PDF is 2 pages long. from PyPDF2 import PdfFileReader, PdfFileWriter reader = PdfFileReader("test.pdf") # open input writer = PdfFileWriter() # open output writer.addPage(reader.getPage(0)) # insert page writer.addBookmark("Hello, World Bookmark", 0, parent=None) # add bookmark Continue reading...