The amount of time it takes to remove the password protection from the PDF file depends on the size of the file. For smaller files, the site should upload and decrypt the file in a minute or two.

If you subscribe to Adobe Acrobat Pro, open the password-protected PDF, navigate to Menu > Protection > Security, then select "No Security" from the Security Method drop-down menu.

Removing passwords from a protected PDF can be done in a variety of ways, depending on the type of protection. However, you must have the correct password with you for the methods to work.