Add Password to PDF
Encrypt a PDF with a password using AES-256 — free, no signup.
🔒 Files are automatically deleted after conversion. We never store or view your files.
Drop a file here, or click to browse
Accepted: .pdf · max 25 MB
How to use the Add Password to PDF
- Upload your PDF.
- Choose a password and enter it.
- Download the protected PDF — it now asks for the password to open.
About this tool
A password stops anyone without it from opening the file, which is a sensible precaution before you email a contract, ID copy or financial statement. The PDF is encrypted with AES-256. Choose a password you will remember: there is no way for us or anyone else to recover it. Your file is processed on our server and deleted right after encryption.
Frequently asked questions
Can I recover the password if I forget it?
No. There is no recovery option, so keep the password somewhere safe.
Can I protect a PDF that already has a password?
Not directly. Unlock it first with the Unlock PDF tool, then add your new password.
Is my PDF stored?
No. It is deleted right after encryption, and the download link expires after 10 minutes or 2 downloads.