Encrypt PDF on Mac
Encrypt PDF on your Mac without installing Acrobat, downloading an app from the Mac App Store, or paying for extra software. ContinuePDF runs right in Safari or Chrome on macOS, so you can encrypt your PDF using the browser you already have open. It works the same on Apple Silicon (M-series) and Intel Macs, and needs no admin password to run.
Start Encrypt PDF NowHow to Encrypt PDF on Mac
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Open the tool in Safari or Chrome
On your Mac, go to continuepdf.com and open Encrypt PDF. No install and no admin rights needed.
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Drag your PDF from Finder
Drag files straight from a Finder window onto the page, or click to browse your Mac.
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Download to your Mac
Run the tool and password-protected PDF lands in your Downloads folder (or wherever Safari saves files).
What you can do with Encrypt PDF
Encrypting a PDF locks it with a password, so the document can only be opened by someone who knows it — protecting sensitive files when they are shared, emailed, or stored somewhere less secure.
Protect financial documents
Password-protect bank statements, tax returns, or payslips before sending them.
Secure an email attachment
Add a password so a confidential file is useless to anyone who intercepts the email.
Lock personal records
Encrypt medical results, contracts, or IDs kept on a shared or cloud drive.
Share on a need-to-know basis
Give the password only to intended recipients so others cannot open the file.
Encrypt PDF on macOS the easy way
macOS Preview is great for viewing and light markup, but it can't do everything, and full Adobe Acrobat is a paid subscription that many Mac users would rather avoid installing. For a one-off or occasional encrypt job, downloading and licensing heavy software is overkill.
ContinuePDF fills that gap. It runs entirely in your Mac's browser, so there is nothing to install, nothing to update, and nothing that needs your admin password. Drag your PDF in from Finder, encrypt it, and the password-protected PDF downloads locally — all without your files ever leaving your Mac.
Why choose ContinuePDF
No install
Runs in Safari or Chrome — no App Store download, no admin password.
Finder drag-and-drop
Drop files straight from a Finder window onto the page.
Apple Silicon & Intel
Works identically on M-series and Intel Macs.
Private to your Mac
Files are processed on your Mac and never uploaded.
Pro tip
Use a strong, unique password and send it to the recipient through a different channel than the file itself — for example, email the PDF but share the password by message or phone. Do not lose the password; without it, the file cannot be opened.
Frequently asked questions
What happens if I forget the password?
There is no back door — a forgotten password means the file cannot be opened. Keep the password somewhere safe, ideally in a password manager.
Does encryption protect the file everywhere?
Yes. The password requirement is part of the PDF itself, so any compliant reader on any device will ask for it before showing the contents.
How do I encrypt a PDF on a Mac?
Open Encrypt PDF in Safari or Chrome on your Mac, drag your PDF in from Finder (or click to browse), run the tool, and password-protected PDF downloads to your Downloads folder. No software installation is required.
Do I need Adobe Acrobat on my Mac?
No. ContinuePDF handles the encrypt job right in your browser, so you don't need Acrobat or any paid macOS app. It also does more than Preview can, without any download.
Is ContinuePDF free to use?
Yes. ContinuePDF and all of its tools, including Encrypt PDF, are free with no signup required. Because documents are processed in your browser rather than on our servers, we can offer the full feature set at no cost.
Other ways to Encrypt PDF
Prefer a different device, browser, or setup? Encrypt PDF works the same everywhere.
Ready to Encrypt PDF?
Start using our free encrypt tool now — no signup required.
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