Which PDFs Qualify for Guaranteed Recovery?
Guaranteed Recovery
- Adobe Acrobat 3.0 (1996)
- Adobe Acrobat 4.0 (1999)
- Adobe Acrobat 5.0 (2001-2003)
- 40-bit RC4 encryption
Deep Recovery
- Adobe Acrobat 6.0+ (2003+)
- 128-bit RC4 encryption
- AES-128 / AES-256
- Password hints improve success
How Do I Know Which Encryption My PDF Uses?
You do not need to know! Simply upload your file and our system detects the encryption type automatically within seconds.
As a general rule, if your PDF was created before 2008 with an older version of Adobe Acrobat, it very likely uses 40-bit encryption and qualifies for guaranteed recovery.
Common scenarios where older PDFs are found:
Why Simple PDF Unlock Utilities Hit a Wall
Popular browser workflows and utilities like Smallpdf, iLovePDF, and PDF24 can usually remove owner or permissions restrictions only when the file is already open or the open password is known.
If you forgot the password that blocks opening the PDF, you need actual encryption recovery - not a permissions reset.
Our approach is fundamentally different. We do not guess your password. For older PDFs, we break the 40-bit encryption key directly by testing all possible keys until we find the right one. That is why the success rate is 100%, regardless of password length or complexity.