Also because we pass the print spool to a PDF the document will lose the ability to search etc. Note: The PDF files you wish to extract must have printing enabled for this to work. If you have any comments or questions please use the comments form at the end of the article. Are you using a textbook PDF for one of your classes that has a million limitations? I know I did and quite frankly I could not stand the fact that I was unable to read the textbooks I paid for on my iPad.