Encrypt a PDF with a password. Prevents unauthorized access. Processing is 100% local — your password never leaves your browser.
Upload the PDF to protect
Set a password (user and optional owner password)
Download the encrypted PDF
Free is enough for most one-off jobs. Pro raises the file and batch caps; Pro + Media unlocks GB-scale streaming and unlimited duration.
Larger files supported on Developer (5 GB CSV) and Enterprise (unlimited). All processing happens in your browser — files never reach a server.
0 bytes uploaded. PDF Password Protect runs entirely in your browser using pdf-lib and pdfjs-dist. Your file stays on your device at all times. No data is sent to any server.
No. Encryption happens entirely in your browser. Your password never touches our servers.
pdf-lib uses RC4 128-bit encryption, the most widely compatible PDF encryption standard.
Remove password protection from a PDF you own. Enter the current password to create an unlocked copy.
Open toolSet permissions to prevent printing, copying, or modifying a PDF. Protect intellectual property with owner passwords.
Open toolRemove author, title, producer, creation date, and all metadata from a PDF. Essential for privacy before sharing.
Open tool