How do I put a password on a PDF?

Upload the file, enter the password you want, and download the protected version. Anyone opening it will need that password.

How strong is the encryption?

Files are encrypted with AES — the standard used across the industry. The protection strength then depends on choosing a good password.

Length beats complexity: aim for 12+ characters mixing words, numbers and symbols. Avoid names and dates that are easy to guess.

Yes — if you know the password, the Unlock PDF tool removes it and gives you an open copy.

The password is used in memory to encrypt the file and never logged or stored. The file itself is purged after download.

Add password protection and encryption to a PDF.

Drop your PDF here or click to browse

Up to 50 MB · processed in memory · deleted immediately

How do I put a password on a PDF?: Upload the file, enter the password you want, and download the protected version. Anyone opening it will need that password.
How strong is the encryption?: Files are encrypted with AES — the standard used across the industry. The protection strength then depends on choosing a good password.
What makes a good PDF password?: Length beats complexity: aim for 12+ characters mixing words, numbers and symbols. Avoid names and dates that are easy to guess.
Can I remove the password later?: Yes — if you know the password, the Unlock PDF tool removes it and gives you an open copy.
Do you ever see or store my password?: The password is used in memory to encrypt the file and never logged or stored. The file itself is purged after download.