Are you trying to open a password-protected PDF or ZIP file? Then, you already know how frustrating it can be. You try out different tools, and the result is a ...

A PDF author or owner can put different restrictions on his/her PDF file. So, depending on the restrictions enabled on PDF, you won’t be able to copy the content of PDF document, open PDF without the ...

A recommended approach to secure your most private documents — whether it’s a PDF, Word file, or Excel spreadsheet — is to lock them with a passcode. While this does help keep sensitive content safe, ...