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  1. Password protect PDF and encrypt a PDF for free | Acrobat - Adobe

    Add PDF password protection to your file to protect sensitive content. When you encrypt a PDF, only people with the password can view the file content.

  2. Password protect a PDF - Adobe

    Add PDF password protection with the Adobe Acrobat online tool for free. By adding a password to your PDF file, you can limit access and only allow people with the password to view the file …

  3. How to password protect a PDF on a PC | Adobe Acrobat

    How to password protect a PDF. Easily add a layer of security to your PDF files. Follow these six steps to password protect PDFs on your PC.

  4. How to encrypt a PDF file for email | Adobe Acrobat

    Discover how to encrypt a PDF file to keep sensitive information secure via email. Our guide provides easy steps and helpful tips for protecting PDFs.

  5. Add passwords to PDFs - Adobe Inc.

    3 days ago · Select All tools > Protect a PDF. In the left pane, select Protect with password. In the dialog box that opens, select if you want to set the password for Viewing or Editing. Advanced …

  6. Password protected PDFs and PDF security | Adobe Acrobat

    How to add passwords and permissions to PDF files: Open a file in Acrobat and choose “Tools” > “Protect.” Select whether you want to restrict editing with a password or encrypt the file with a …

  7. How to secure a PDF file. - Adobe

    Learn how to secure a PDF file. Secure your sensitive documents and protect PDFs with passwords to ensure only authorized users can access them.

  8. Password Protect a PDF for Free | Protect your PDF Online - Adobe

    Use the online password protect PDF tool from Adobe Acrobat to keep your files secure. Simply add a password to your PDF to restrict access.

  9. How to password protect a PDF | Adobe Acrobat

    We’ll show you how to password protect a PDF for free and restrict certain features, such as printing and editing, in Adobe Acrobat.

  10. Protect a PDF File with a Password | Adobe Acrobat

    Nov 10, 2025 · Learn how to add a password to your PDF to protect others from opening or editing the PDF file. Protecting your PDF files prevents unauthorized access, protects …