How to remove password protection from pdf without password

How to unlock a PDF to remove password security: Open the PDF in Acrobat. Use the “Unlock” tool: Choose “Tools” > “Protect” > “Encrypt” > “Remove Security.”

Launch the UPDF tool and open the PDF file by clicking on the 'Open File' button on the main interface of UPDF. In this way, it is possible to open a PDF without a password.

Use the built in pdf reader in Chrome to open the document. When prompted, enter the password. Go to the File menu and select Print, instead of sending it to a printer select destination printer as "Save as PDF" The password should have been removed on the new document.