PDFs are called Portable Document Format. PDF is a file format with extension .pdf, it is used to present different document into an independent manner. It makes the files independent of Hardware, Software Applications and Operating System. To view these files, one must have any available PDF viewer or PDF reader, and this make it an independent of any application. But when someone wants to make alterations or to update the document, a query rises in the mind, “How can you edit this pdf document?” Mostly PDF viewer/reader does not have a functionality of editing PDFs.