How to unlock or remove restrictions in PDF document?

PDF documents is being great resource for information .  Almost all ebooks and other documents will be in PDF.  But if the PDF is restricted to edit or copy, it will irritate.  For example if you are gathering information for Paper presentation, sometime authors restrict to copy.  So you may not gather good information.  So today i am going to give two methods to break the restrictions of PDF.

Online Method :
Free PDF Unlock Online Utility is a web site that allows us to unlock the whole process online. Simply click on Browse and Submit your site to process your file and show you a copy of this release:

Offline Method:
It works by removing passwords that restrict access in two areas. One is for passwords that restrict some functions such as printing copying and pasting. The second is any password that might prevent you from accessing or opening a PDF file.