Protect a PDF with a password
Lock your PDF with AES-256 encryption. Add an open password and, if you want, restrict printing, copying, or editing — free, no sign-up required.
Drag & drop your PDF here
or browse files from your computer
Max 100MB per file
Set a password to open this PDF
Password strength: —
Passwords don't match.
Permissions (applied once the file is opened)
Encryption strength
Someone who knows only the owner password (not the open password) can override the permissions above.
Preparing...
Your PDF is now password protected
Keep your password somewhere safe — if you lose it, the file can't be recovered.
AES-256 encryption
The same encryption standard banks and governments use, applied to your PDF's contents.
Fine-grained control
Optionally restrict printing, copying, editing, or form filling — independent of the open password.
Completely free
Protect as many PDFs as you like, with no size limits or sign-up required.