Word to PDF
Convert Word documents to PDF online for free. Upload a DOCX and download a clean PDF in seconds.
Protect PDF
Add a password to a PDF so it can only be opened with it. Encrypted in your browser — the file and password never leave your device.
Drop a PDF here or click to upload
Encrypted in your browser — your file and password never leave your device
Lets you change permissions later in an editor. Different from the open password.
How to use Protect PDF
Password-protect a PDF so it can only be opened with the password. Encryption happens entirely in your browser, so neither the file nor the password is uploaded.
- Standard PDF encryption (RC4 128-bit) that works in Adobe Acrobat, Preview, Chrome, Edge, and mobile readers
- Optional separate owner password
Use a long, unique password and store it somewhere safe, because it can't be recovered. To remove a password you know, use Unlock PDF.
Protect PDF FAQs
Is Protect PDF free?
Protect PDF is a free online tool on ReallyUseful.Tools. No account is required.
Does Protect PDF run in my browser?
Protect PDF is designed to run in your browser where supported, so files can stay on your device instead of being uploaded to a server.
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