Based upon the 20 or so PDF unlockers I have used this one has always worked the best for me.
Key Features of CrackMyPDF:
- Remove PDF restrictions for copying, editing, printing & extracting.
- No Software Installation Required. Everything is done online.
What CrackMyPDF Can’t Do
Our PDF Restrictions Remover can work to remove the restrictions in standard password protected PDF file, including 40-bit RC4 ecryption, 128-bit RC4 decryption and 128-bit AES decryption.
But it can NOT:
- Remove or find the user/open password automatically.
- Remove other protections, such as DRM or third part plug-in.