Password Protect PDF
Add a password to a PDF and choose what others can do with it.
Runs in your browser — files never leave your device
or drop a file here
How to password protect a PDF
Lock a PDF with a password so only people you share it with can open it. Encryption uses AES-256 and happens on your device, so neither the file nor the password is sent anywhere.
Add the PDF.
Type a password twice and choose the permissions.
Click Protect PDF and download the encrypted file.
Protect PDF FAQ
It uses 256-bit AES, the strongest encryption the PDF format supports. It opens in Adobe Acrobat, browsers, and the built-in PDF viewers on phones and computers.
It can't be recovered. Keep the password somewhere safe, and keep an unprotected copy if you may need one.
No. The PDF is encrypted in your browser; the file and password never leave your device.
No. The tool runs entirely in your browser, so your files are processed on your own device and never leave it.
Yes. Every PDFCraftly tool is free, with no sign-up, no watermark and no email required.
Guides
- How to Password Protect a PDF for FreeLock a PDF with a password using AES-256 encryption, and choose whether it can be printed, copied or edited. Free, in your browser, nothing uploaded.
- How to Remove a Password from a PDFTired of typing a PDF's password every time? Save an unlocked copy of a PDF you can open, or lift printing and copying restrictions. Free and private.