It is essential to know how to password protect a PDF as the internet can be brutal sometimes in term of privacy. PDF stands for portable document format which is one of the most used medium to transfer documents on the internet. One can be sharing important, personal as well as confidential documents online. There is always a risk of data being exposed by threats like virus, hackers or third party websites working as middlemen. Which is why a password protected PDF is a must have these days. You can protect PDF from copying and editing too. In this blog, we’ll walk you through different ways to protect and encrypt PDF for free.