FileHook logoFileHook
Try it
Protect PDF · Free · Browser-based

Password-protect a PDF —the password never leaves your device

Encrypt your PDF with a passphrase. Choose what readers can do — print, copy, or edit. AES-256, browser-side.

Drop a PDF here
or click to browse — up to 50 MB
HOW IT WORKS
1

Drop your PDF

Drag and drop a PDF or click to browse.

2

Pick a password

Confirm it. Choose what readers can do — print, copy, or edit.

3

Encrypt & download

Click Encrypt. The locked PDF downloads instantly — readers will be prompted for the password to open it.

Password protection — FAQ

How do I password-protect a PDF online?+

Drop your PDF, pick a password, choose what readers can do (print / copy / edit), then click Encrypt. The encrypted PDF downloads instantly.

Where does the encryption happen?+

In your browser. Your password and PDF bytes never leave your device. We use a browser library that adds AES-256 encryption support.

What encryption is used?+

Standard PDF encryption (AES-256). Compatible with Acrobat, Preview, Chrome's PDF viewer, and any modern PDF reader.

Can I unset the password later?+

Open the protected PDF in any reader (you'll be prompted for the password), use the reader's "Save a copy" or print-to-PDF, and the new copy will be unprotected.

Ready to edit your PDF?

Drop a file in and start typing. No signup needed to edit.

Edit a PDF now
OTHER PDF TOOLS

Merge PDFs

Combine multiple PDFs into one. Drag to reorder, click to merge.

Open

Split PDF

Break a PDF into multiple files by page ranges or every N pages.

Open

Rotate PDF

Rotate any page 90°, 180°, or 270°. Permanently saved on download.

Open

Reorder PDF Pages

Drag pages into the order you want. Browser-based, no upload.

Open