How to password protect a PDF file

2023年12月21日 — #1 How to Lock a PDF in Adobe Acrobat and Make It Read-Only · Open a file in Acrobat and choose Tools > Protect > Restrict Editing. · Choose a ...

Password protect your PDF to prevent unwanted access. Keep your files safe and sensitive info secure with a free online PDF lock with trusted encryption.

Free online tool to password protect PDF files and to set PDF security settings. No quality loss. Without installation. Without registration.

Click the Select a file button above, or drag and drop a PDF into the drop zone. · Enter a password, then retype it to confirm the password. · Click Set password.

Open the PDF in Adobe Acrobat Reader. · Click on “File” and select “Protect Using Password.” · Choose whether you want to restrict editing and printing or just ...

How to Password Protect Digitally Signed PDF Documents. 1. Open the PDF and choose File > Print > Adobe PDF > Print. 2. Type the file name, and click Save.

Encrypt and protect PDF with a password to safeguard sensitive information. Secure your PDF files online, with ease and without registration.

Protect your PDF files online by adding a password that will prevent people from being able to copy or print your PDF document. Secure PDF files for free.