How do I password protect a PDF?

Upload the PDF, type a password twice and click Protect PDF. The downloaded file asks for the password when opened.

How secure is the encryption?

We use 256-bit AES, the strongest encryption defined for PDF files.

What if I forget the password?

We don’t store passwords, so a forgotten password cannot be recovered. Keep it somewhere safe.

Files are sent over an encrypted connection, processed on our servers and deleted automatically within an hour. You can also delete them immediately from the download screen. We never share or read your documents.

PDF Security

Protect PDF with a password

Encrypt your PDF with AES-256 so only people with the password can open it.

Files up to 2 GB
Encrypted & private
Auto-deleted within 1 hour
Free, no sign-up, no watermark

How it works

How to use Protect PDF

1
Select the PDF you want to protect.
2
Enter a password and choose permissions.
3
Click Protect PDF and download the encrypted file.

AES-256

Industry-standard encryption supported by all modern PDF readers.

Permissions

Optionally prevent printing, copying text or editing.

Private

Passwords are never stored and files are deleted automatically.

FAQ

Protect PDF questions

Related PDF tools

View all PDF tools →

Unlock PDFRemove the password and restrictions from a PDF you have access to.Watermark PDFStamp text or an image over your PDF with full control of style and position.Compress PDFReduce PDF file size while keeping the best possible quality.Edit PDF MetadataView and change the title, author, subject and keywords of a PDF — or remove them.