The standard security provided by Acrobat PDF consists of two different methods and two different passwords, "user password" and "owner password". A PDF document may be protected by password to open ('user' password) and the document may also specify operations that should be restricted even when the document is decrypted: printing, copying text and graphics out of the document, modifying the document, or adding or modifying text notes and AcroForm fields (using 'owner' password).

So when you get some protected PDF files, do you want to crack, change or remove password from PDF as below?

Q1: How can I crack user password for pdf files?
How can I crack user password for pdf file
I use some software but dont succeed.I have some PDF files that neet password to open them

Q2: Does anyone know how to remove pdf password?
I got an ebook from webstie, but it is protected with a password. It does not open.
Does anyone know a way around it?
Thanks.
For resolving these problems, I search a tool--- PDF Password Remover in the website. PDF Password Cracker can help you remove, crack, change password from protected PDF files with ease. Then you can edit or reuse the content of PDF files. I hope it is helpful for us.