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Privacy guide

How to password protect a PDF

Lock a PDF with strong AES-256 encryption so only people with the password can open it. You can also block printing, copying or editing.

Open Password protect PDF 2 min readUpdated October 25, 2026
Password protect a PDF in Raccoon PDF Editor
Password protect a PDF in Raccoon PDF Editor

Before you start

Bank statements, payslips, contracts and medical records often need to be emailed. A password keeps them unreadable if the email goes to the wrong person or the file is left on a shared computer.

Step by step

  1. Open the PDFGo to raccoonpdf.com/protect-pdf and choose the file.
  2. Turn on encryptionIn Document › Password & permissions, turn on Encrypt with AES-256.
  3. Set the passwordType a password to open the file. Optionally add an owner password and untick Allow printing, Allow copying text or Allow editing.
  4. DownloadPress Download. The saved PDF asks for the password in every PDF reader.

Good to know

  • Send the password a different way from the file, for example by text message rather than in the same email.
  • Use at least 10 characters, or a few unrelated words.
  • Opened a protected PDF? Raccoon unlocks it with the password and saves it without one unless you turn encryption on again.

Questions

How strong is the encryption?

AES-256, the same standard used by Adobe Acrobat for PDF passwords.

Can you recover a password I forget?

No. We never see your file or password, so keep it somewhere safe.

Does it work in Adobe Reader?

Yes. Any standard PDF reader will ask for the password.

Ready when you are

Free, no sign-up, and your file never leaves your device.

Open Password protect PDF

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