Try our free password protection tool
Password protect PDF files
Add PDF password protection with the Adobe Acrobat online tool. By adding a password to your PDF file, only people with the password can view the file content.
Protect sensitive content
Adding a password helps make sure that sensitive data like birth dates or medical information is accessible only to approved people and remains unavailable to everyone else.
Restrict unauthorized access
When you password protect a PDF, you control file access. For someone to open the file, you'll need to give them the password, keeping your content private.
Choose your password strength
Adobe wants to make sure that your file is well protected. When you create a password, we’ll let you know if it is weak, medium, or strong using password standards.
No software to install
Acrobat online PDF tools work in any browser, including Microsoft Edge and Google Chrome. Just drag and drop a file to get started — there’s no need to install any additional software.
Trusted PDF password security
As the inventor of the PDF file format, Adobe delivers document security you can trust. Password protect your PDFs with confidence.