Cisdem PDF Password Remover for Windows FAQs

The trial version will expire after 14 days, during this 14-day trial period, you can only export half number of the pages(or up to 3 pages) with watermarks, and the registered version can export the full pages without watermarks.

A user password is the password used to prevent PDF from opening. It is also called Open password.

An owner password is the password used to set PDF document restrictions, including printing, copying, editing and modifying PDF. It is also known as Permission password and Master password.

No, current version can't decrypt AES protected PDF files.

If the PDF has owner password and user password, you can enter the user password to unlock it and then start removing.

To decrypt the user password:

1.Click the Padlock icon on the PDF.

2.Click “Forgot?” on the dialog.

3.Set the decryption settings.

4.Click Decrypt.

When completing the decryption, the program will back to the main interface. You can click Remove to export the non-password copy of the PDF.

The decryption time depends on the decryption settings and the performance of your PC. If the password is very long and contains many characters, the decryption time can take few days. When program is decrypting the PDF, it will give a remaining time. Generally, the password is decrypted much quickly.

A password usually contains characters (symbols, letters and digits), and people will combine them when creating password. Thus when you’re trying to crack a lost password, you can select characters sets your password possibly includes.

If the password has not been found, your password length may longer than the length that you have set or include other possible characters. You can modify the decryption setting and then restart the decryption.

Yes. PDF Password Remover for Windows will not modify the PDF content, and the original PDF is still password protected.

If you don't know the open password, and you need to crack the password, then it can only be processed one by one.

If you've had the open password and you've unlocked the PDF files, yes, you can decrypt all the imported PDF files at one time.