Add password protection and encryption to PDF files online free. Lock sensitive documents in seconds — secure and private.
Password Protect PDF is part of ToolsPilot — a free online toolkit for PDFs, images, audio and video. No signup, no watermark and no software to install. Your file is processed on a secure server and deleted automatically right after — never stored or shared.
How to use Password Protect PDF
Open the Password Protect PDF tool and add your file — drag and drop it, or click to browse from your device.
Choose any options you need, then run it — ToolsPilot processes your file in just a few seconds.
Download your result instantly. No account, no email and no watermark — ever.
Frequently asked questions
Is Password Protect PDF free to use?
Yes. Password Protect PDF on ToolsPilot is 100% free with no account, no watermark and no daily limits for everyday use.
Are my files private and secure?
Your file is sent over an encrypted connection, converted on a secure server, and deleted automatically right after — it is never stored or shared.
Do I need to install any software?
No. Password Protect PDF works online in any modern browser on Windows, macOS, Linux, Android and iOS — there is nothing to download or install.
What encryption is used?
Your PDF is locked with a strong password so it can only be opened by people who know it. Keep the password safe — it cannot be recovered if lost.