Encrypt a PDF File on Mac Made Simple

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How to Encrypt a PDF File on Mac Online

Even if someone without your permission tries to open your document, they won’t be able to access the data and use it. Assure that nothing will happen to your documents as long as you follow the steps provided above. You're still able to edit the file and send it to other individuals.

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Open Disk Utility (go to Finder > Applications > Utilities folder). Once there, go to the File and choose New > Disk Image from Folder (or type shift-command-N). Select the folder you want to encrypt, and then click Image. Now, pick your encryption method and click Save.
Open Your PDF. Launch PDF element on your computer. Click the "Open File” button on the Home window. Protect PDF from Copying and Editing. Go to the “Protect" tab, then click the "Password" button. Then select the option for “Require a password to change security settings and get access to specific functions”.
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