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PDF Password Security

Protect or unprotect PDF files with Password security using our products.

  box of A-PDF Restrictions Remover
A-PDF Restrictions Remover
box of A-PDF Password Security
A-PDF Password Security
A-PDF Password Security
A-PDF Password Security Service
Decrypt PDF files *
Encrypt PDF files **  
Change restrictions  
Support batch operations    
hot directory  
Password Pool   ***
Run as Windows Service    
Price $9.99 $27 $99
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* Support 40-bit, 128-bit RC4 and 128-bit AES encryption
** Support 40-bit or 128-bit RC4 encryption
*** Need A-PDF Password Security (Desktop) to set password pool


About PDF Standard Password Security

The built-in encryption method provided by PDF allows for the following functionality. A document has two passwords: an owner password and a user password. The document also specifies 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. When the correct user password is supplied, the document is opened and decrypted but these operations are restricted; when the owner password is supplied, all operations are allowed. The owner password is required to change these passwords and restrictions.

A document is encrypted whenever a user or owner password or restrictions are supplied for the document. However, a user is prompted for a password on opening a document only if the document has a user password.

How Can I Know If a PDF File Has Password Security?

screenshot of security in Adobe Acrobat Reader

screenshot of restrictions summary in Adobe Acrobat Reader

When you see the icon Adobe Acrobat Reader Security Icon at the bottom left of the Acrobat/Acrobat Reader program window, it indicates that the PDF file is secured. Place your mouse cursor over that 'locked' icon, and you will see a listing of the security options that were applied to the file.
For more information about a file's security settings, you can click "File|Document Properties" in the Acrobat/Acrobat Reader menu bar. Then select the Security tab to show more detail about the file restrictions.

Note: if you are using Acrobat Reader, some restrictions will always be in effect , even if the file has not been encrypted, because Acrobat Reader does not allow comprehensive control. The restrictions may include: Document Assembly, Commenting, Signing, etc.


LockLizard Safeguard PDF Security
PDF Security with DRM copy, print, and expiry controls. No passwords. Stops screenshots.

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