PDF Password Remover  解除PDF密碼軟體

VeryPDF PDF Password Remover can be used to decrypt password-protected Adobe Acrobat PDF files. It can help you generate PDF files with no password from the original PDF files which are not permitted to be edited, changed, printed, copied, added annotations, etc.

VeryPDF PDF Password Remover provides two versions: the standard version named VeryPDF PDF Password Remover which contains a GUI application as well as a command line application; and the Pro version named VeryPDF PDF Password Remover COM which is designed for developer users.

Supported Operating Systems
Supported by Windows 98/ME/NT/2000/XP/2003/Vista/7 of both 32 and 64-bit.

Key Features
Remove PDF passwords and Restrictions
Decrypt PDF files protected by owner/master passwords.
Enabl you to reuse the encrypted PDF files by removing restrictions on copying, printing, editing, commenting, page extraction, etc. from the input files.
Remove user/open passwords from PDFs file only if you have the user/open passwords of the PDF files.
　

Efficient Decryption Function
Support PDF format of version 1.8.
Able to remove 40 and 128-bit encryption owner passwords.
Able to remove AES encryption owner passwords.

Easy to Use
Support drag and drop when input PDF files.
Provide a command line operation (for manual use or inclusion in scripts).
Support batch operation by using command lines.
　

Features
Decrypt protected Adobe Acrobat PDF files, removing restrictions on printing, editing, copying.
Remove the security settings from your encrypted PDF file.
Do NOT need Adobe Acrobat software.
Support PDF format of version 1.8, including Acrobat 9.0 PDF files.
Able to remove 40 and 128-bit RC4 encryption owner passwords.
Support 128-bit AES protected PDF files.
Able to remove AES encryption owner passwords.
Easy to use, you can just load a PDF file and decrypt it quickly.
Support drag and drop.
Repair some damaged PDF files automatically.
Recover corrupt annotations in some PDF files.
Optimize the decryption speed for large PDF files.
Optimize the processing for special PDF forms.
Provide command line application for manual use or inclusion in scripts.
Batch operation on many files from command line.
Unlike most PDF password crackers, your PDF file is not altered in any way (except the decryption), even the file size is often the same. That minimizes the possible incompatibility of the unlocked PDF file.
　

Brief introduction to PDF password

The standard security provided by PDF has two different passwords: user passwords and owner passwords. A PDF document may be protected by a password for opening (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 (using owner password).