Password-protect a PDF:the password never leaves your device
Encrypt your PDF with a passphrase. Choose what readers can do: print, copy, or edit. AES-256, browser-side.
Drop your PDF
Drag and drop a PDF or click to browse.
Pick a password
Confirm it. Choose what readers can do (print, copy, or edit).
Encrypt & download
Click Encrypt. The locked PDF downloads instantly. Readers will be prompted for the password to open it.
Common questions about password protection
How do I password-protect a PDF online?+
Drop your PDF, pick a password, choose what readers can do (print / copy / edit), then click Encrypt. The encrypted PDF downloads instantly.
Where does the encryption happen?+
In your browser. Your password and PDF bytes never leave your device. We use a browser library that adds AES-256 encryption support.
What encryption is used?+
Standard PDF encryption (AES-256). Compatible with Acrobat, Preview, Chrome's PDF viewer, and any modern PDF reader.
Can I unset the password later?+
Open the protected PDF in any reader (you'll be prompted for the password), use the reader's "Save a copy" or print-to-PDF, and the new copy will be unprotected.
Unlock PDF
Remove the password from a PDF you can already open. The password stays on your device.
OpenAdd Watermark
Stamp text across every page. Adjustable opacity, rotation, position.
OpenRedact PDF
Drag a black box over anything sensitive. The text is removed for good, not just covered.
OpenEdit PDF
The full editor: inline text, shapes, signatures, forms and page ops. No signup to start.
Open