How to Remove a Password From a PDFby Patrick Warren
Portable Document Format (PDF) is a file format created by Adobe systems to allow an exchange of documents regardless of their original file format. Adobe enabled the ability to password protect these files. PDF passwords can prevent a PDF file from being copied, changed or printed without the permission of the creator. The PDF file is created and this password is set using Adobe Acrobat, a complete PDF creating, editing and reading program.
Open the PDF file with the password using Adobe Acrobat. This is not the more common Adobe Reader program.
Select "Properties" from the "File" drop down menu.
Click on the "Security" tab of the "Document Properties" window.
Click the drop down box next to "Security Method:" and select "No Security."
Enter the password in the warning box that appears and click "OK."
Click "OK" on the next warning box that appears.
Click "OK" on the "Documents Properties" window.
Save the document by clicking the save button or by selecting "Save" from the "File" drop down menu.