#BEST FREE PDF UNLOCKER PDF#
However, GuaPDF will only decrypt PDF files at higher levels of version 1.7 if the encryption is at 128-bit AES. GuaPDF works with PDF files up to version 1.7 level 3 even with 256-bit AES encryption. GuaPDF is primarily a PDF password remover tool for the owner password but can also be used as a PDF password recovery tool for 40-bit encrypted user passwords. GuaPDF is easy to use and doesn't even require installation. GuaPDF, sometimes referred to as Guaranteed PDF Decrypter, is a combination PDF password remover/recovery tool. PDFCrack is a command-line tool and should work on Windows 7, Windows Vista, and Windows XP, including both 32-bit and 64-bit versions. PDFCrack works with PDF files up to version 1.6 with 128-bit RC4 encryption.
PDFCrack uses a brute-force password recovery method. PDFCrack would be considered a true PDF password recovery program since it recovers both the user password and owner password from encrypted PDFs. PDFCrack is the best free PDF password recovery tool available, assuming that's what you're after - an actual password "recovery" and not a simple PDF unlock or reset. Here we introduce 4 of the best free PDF unlocker tools.
#BEST FREE PDF UNLOCKER FULL#
Most PDF unlocker tools fall in to one or more of three major categories: tools that recover the PDF user password to free unlock PDF files, tools that recover the PDF owner password, and tools that remove the PDF owner password allowing full access to the PDF file and even add new encryption password. A PDF unlocker (also called a PDF password remover, password reset, or password recovery tool, depending on its ability) is a program that can be used to either find, remove, or unlock the security on a PDF file that prevents you from opening, reading, printing, or editing the PDF file.
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