If you regularly send PDF files over the internet, knowing how to edit PDF files quickly will make your life a lot easier.

PDF, short for portable document format, is a type of digital file that allows you to send content that is readable by other users regardless of what software they use to view the file. And in order for PDFs to adapt to various viewing platforms, the file’s text and images can’t easily be modified once packaged into a PDF.

But it’s not impossible.