When to use it
Sensitive documents
Lock contracts, statements or IDs before you email them.
Shared files
Add a password to a file before putting it in shared storage.
Client work
Send a protected PDF and share the password separately.
Add a password to a PDF so only the people you share it with can open it. The encryption happens in your browser, and the file never leaves your device.
Select a PDF
Drag files here or click to choose
Anyone opening the PDF will be asked for this password. Keep it safe, it cannot be recovered.
Everything runs in your browser. Your files are never uploaded.
Locks the PDF with 256-bit AES, the same standard used across the industry.
Choose any password; it is required to open the file from then on.
Encryption runs on your device and the PDF is never uploaded.
Drop in the PDF you want to password protect.
Type the password people will need to open the file.
Click Protect PDF and save the encrypted document.
Lock contracts, statements or IDs before you email them.
Add a password to a file before putting it in shared storage.
Send a protected PDF and share the password separately.
Upload the file, type a password, then click Protect PDF. The encrypted file downloads right away, and anyone opening it will need the password.
The PDF is encrypted with 256-bit AES, a strong and widely used standard. It is applied by qpdf running in your browser.
No. Encryption happens entirely on your device, so the file and the password never leave your browser.
Yes. Use the Unlock PDF tool with the same password to remove protection from a file you can open.
There is no way to recover it. The password is never stored anywhere, so keep it somewhere safe before you share the file.
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