Protect a PDF with a password
Lock a PDF with a password so it cannot be opened or read without it, keeping sensitive documents fully private.
Drop files here or click to browse
Upload one file
Accepted: PDF
Lock a PDF with a password so it cannot be opened or read without it, keeping sensitive documents fully private.
Drop files here or click to browse
Upload one file
Accepted: PDF
Add a password to a PDF so only people who know it can open the file. Useful for sending sensitive documents by email or shared drive.
The PDF is encrypted with AES-256, the strongest standard encryption defined for PDF files and supported by Adobe Acrobat, Preview, Chrome, Edge and other current readers. Without the password the contents cannot be opened or read.
The strength of the protection depends almost entirely on the password. A short or common password can be guessed by cracking tools, so use at least 12 characters or a passphrase of several words.
Send the password through a different channel than the file, for example the file by email and the password by phone or text message. If both travel together, anyone who intercepts one gets both.
The password is not stored anywhere after your job finishes, so a forgotten password cannot be recovered — keep a copy somewhere safe.
This sets the password required to open the file; it does not separately restrict printing or copying once it is open.
No. We do not keep the password or an unencrypted copy of the file, and AES-256 cannot be reversed. Keep your own copy of the original.
User vs owner passwords, what AES-256 encryption protects, why "restrictions" are weak, and how to choose and share a PDF password safely.