How to unlock a PDF to remove password security: · Open the PDF in Acrobat. · Use the “Unlock” tool: Choose “Tools” > “Protect” > “Encrypt” > “Remove Security.”
Go to https://www.sodapdf.com/unlock-pdf/ in your computer's web browser. This is the website for Soda PDF, which allows you to unlock user-locked PDF files.
Unlocking a PDF is easy with Smallpdf. You just need to upload your PDF, enter the password (for strongly encrypted files), and download the unlocked PDF!