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remove pdf password

Portable Document Format (PDF) is a file format created by Adobe Systems in 1993 for document exchange.

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, "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; and adding or modifying text notes and AcroForm fields (using 'owner' password).

If you lost the password for your PDF files, following tools can help you find back / break the password.

PDF Password Recovery COM/SDK (Client/Server) - Professional pdf decryption software which can decrypt Adobe Acrobat PDF files.

PDF Password Cracker - crack / decrypt protected Adobe Acrobat PDF files

Atomic PDF Password Recovery - recover the password for PDF files