title: How to replace / remove text from a PDF file
body: <p>How would I go about replacing / removing text from a PDF file?</p>
  
  <p>I have a PDF file that I obtained somewhere, and I want to be able to replace some text within it.</p>
  
  <p>Or, I have a PDF file that I want to obscure (redact) some of the text within it so that it's no longer visible [and so that it looks cool, like the CIA files].</p>
  
  <p>Or, I have a PDF that contains global Javascript that I want to stop from interrupting my use of the PDF.</p>