Open the PDF in Acrobat DC, and do one of the following: Choose Tools > Protect > More Options > Encrypt with Password. If you receive a prompt, click Yes to change the security.
Acrobat displays a confirmation message that the file was successfully protected using password. If you receive a prompt, click Yes to change the security.
Acrobat 6.0 And Later (PDF 1.5) encrypts the document using 128-bit RC4. Acrobat 7.0 And Later (PDF 1.6) encrypts the document using the AES encryption algorithm with a 128-bit key size.
To apply 256-bit AES encryption to documents created in Acrobat 8 and 9, select Acrobat X And Later. Click OK. At the prompt to confirm the password, retype the appropriate password in the box and click OK. Please refer to Adobe Acrobat’s website for more details.
How do I set up encrypt with password for Acrobat Reader?
Acrobat Reader is only used to view pdfs and is free to use. You can go to “Tools”, then choose Protection -> Encrypt -> Encrypt with Password If a dialog box appears asking for “Applying New Security Settings”, click “Yes”. Choose “Acrobat X and later” (Recommended Option), if the recipient is using Acrobat X or Acrobat Reader X or later.
How to password protect PDF in Adobe Reader?
You can either drag and drop the PDF file into Adobe Reader or open it from the main menu. The tools are located on the top left side of the screen in Adobe Reader 11.
Is there a way to encrypt a PDF document?
Adobe Reader is free and there are no add-ons you can subscribe to through the basic Reader that will add the ability to encrypt documents. Now if you are subscribed to Adobe Acrobat DC, you will have that ability. Be kind and respectful, give credit to the original source of content, and search for duplicates before posting.
If a PDF document is encrypted with a password, the user must specify the open password before the document can be viewed in Adobe Reader or Adobe Acrobat.