Lock PDF with Password

Secure your confidential documents with strong password protection.

Drop a PDF here. Set a password — anyone who opens the file will need it. Everything runs in your browser.

PDF

100% Private · Local

Password on Open

Anyone opening the file must enter the password you set.

Owner Password

Optionally add an owner password for full permissions control.

Preview Before Lock

See page count and file details before encrypting.

100% Private

Encryption runs locally. Your PDF never leaves your browser.