How To Open a PDF File?
The easiest way to open a PDF file is to double-click on it and let your PC decide which default application should open the file. If no program opens the PDF file, and then you probably don't have an application installed that can view and/or edit PDF files. Adobe Reader or another PDF reader program will open the PDF file. Programs like the already mentioned Adobe Reader will open PDF files, as will programs likeFoxit Reader, Nitro PDF Reader, SumatraPDF, and many more.
When view pdf files, we will find some pdf files were protected by password. With password protected pdf files, we could not open or edit more. The password security has two kinds of password, and how to crack pdf password on mac or windows?
The one is USER PASSWORD, A PDF user password is the password used to restrict the opening of a PDF file. In Adobe Acrobat, the PDF user password is called the document open password.
PDF user passwords are are not easily hacked but there are a few PDF password recovery tools that can do it via brute-force attack, given enough time.
A PDF user password only restricts the opening of a PDF file. PDF owner passwords are used to provide document restrictions in PDF files.
The other is OWNER PASSWORD, A PDF owner password is the password used to set document restrictions in PDF files. In Adobe Acrobat, the PDF owner password is called the change permissions password.
As of the latest PDF version, document restrictions can include printing, changing the document, document assembly, content copying, content copying for accessibility, page extraction, commenting, filling of form fields, signing, and creation of template pages.
PDF owner passwords are easily removed with freely available PDF password removal tools, allowing full access to previously restricted PDF files.
A PDF owner password does not restrict the opening of a PDF file, only what can be done once opened. PDF user passwords are used to provide "document open" security in PDF files.
How to open a PDF file protected with password?
So for somebody who want to open the password protected pdf files, we can use the pdf password remover software to unlock pdf files and remove pdf security.
A PDF password remover (also called a PDF password cracker, pdf restriction remover, pdf security remover, pdf unlocker, password reset or password recovery tool, depending on its ability) is a program that can be used to either find, remove, or bypass the security on a PDF file that prevents you from opening, printing, or changing the PDF file.
Most PDF password cracker tools fall in to one or more of three major categories: tools that recover the PDF user password, tools that recover the PDF owner password, and tools that remove the PDF owner password allowing full access to the PDF file.
Doremisoft PDF Password Remover is one of the best and easy-to-use software to remove PDF Password.
For Mac User: Doremisoft PDF Password Remover Mac could help remove pdf security, pdf encryption or pdf restriction On Mac OS.
Remove the restrictions (owner password) on printing, editing, copying in seconds without requiring the password.
Remove user password which protects the PDF files from opening with the authorized password and never need to input the password forever.
High Compatibility. Support PDF1.0-1.7 formats.
24/7 online technical support and free lifetime upgrading service are available for every user.
How to open a PDF file protected with password