Your password stays with you
The PDF is encrypted by your browser on your own device. Neither the file nor the password is ever sent to us.
Protect PDF
Protect a PDF with a password
Add a password so only the people you choose can open the PDF. It uses AES-256, the strongest PDF encryption, and you can also stop printing, copying and editing.
- Fast
- Private
- No upload
Drop your PDF files here
PDF files, up to 50 at a time
Your files are processed on your device and are never uploaded.
How it works
Protect PDF in three steps
- Choose your PDFSelect one or more PDF files, or drop them on the box above. Several files get the same password.
- Choose a passwordType the password twice, and choose whether people may print, copy and edit after opening it.
- DownloadThe protected PDF downloads to your device. It asks for the password in every PDF reader.
Why use it
Protect PDF with ToolsCampus
Strong encryption
AES-256 is the strongest encryption PDF supports. Adobe Acrobat, Chrome, Edge, macOS Preview and phone apps all open it.
Limit what people can do
Allow everything, allow only reading and printing, or allow reading only.
Questions, answered
Protect PDF questions
What if I forget the password?
The PDF cannot be opened without it, and nobody can recover it for you, not even us. Keep the password somewhere safe, and keep an unprotected copy if you may need it.
Are my file and password uploaded?
No. Everything happens in your browser on your own device.
Do the printing and copying limits always work?
Adobe Acrobat, Chrome, Edge and most PDF apps respect them, but some apps ignore them. The open password itself always works in every app.
How do I remove the password later?
Use Unlock PDF and type the password once. You get a copy that opens without it.
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