Remove all PDF passwords and restrictions.
Free PDF Password Remover is a free PDF software to remove all the passwords and restrictions in secured PDF files.
Remove PDF user password and owner password:
A PDF file may be encrypted for security, or digitally signed for authentication.
The standard security provided by Acrobat PDF consists of two different methods and two different passwords. The two different passwords are user password and owner password.
User password which is also named as open password encrypts the PDF file and prevents opening. Owner password which is also named as master password specifies operations that should be restricted even when the document is decrypted, which can include: printing, copying text and graphics out of the document, modifying the document, or adding or modifying text notes and AcroForm fields.
The user password encrypts the file and requires password cracking to defeat, with difficulty depending on password strength and encryption method. It is potentially very secure. The owner password does not encrypt the file, and instead relies on client software to respect these restrictions, and is not secure.
An owner password can be removed by many commonly available PDF password remover software, including some free online services. Thus, the use restrictions that a document author places on a PDF document are not secure, and cannot be assured once the file is distributed; this warning is displayed when applying such restrictions using Adobe Acrobat software to create or edit PDF files.
Even without removing the password, most freeware or open source PDF readers ignore the permission protections and allow the user to print or make copy of excerpts of the text as if the document were not limited by password protection.
PDFs may be encrypted so that a password is needed to view or edit the contents. The PDF Reference defines both 40-bit and 128-bit encryption, both making use of a complex system of RC4 and MD5. The PDF Reference also defines ways that third parties can define their own encryption systems for PDF.
PDF files may also contain embedded DRM restrictions that provide further controls that limit copying, editing or printing. The restrictions on copying, editing, or printing depend on the reader software to obey them, so the security they provide is limited.
In summary, Weeny Free PDF Password Remover can't remove user password unless the user provides the correct user password. Weeny Free PDF Password Remover can remove owner password and all restrictions protected by owner password without problem. Weeny Free PDF Password Remover can't remove embedded DRM restrictions.