Protect PDF
Keep documents private. The PDF is encrypted with AES-256, and only people with the password can open it. You can also restrict printing, copying and editing.
Runs in your browser — files are never uploaded
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How to use Protect PDF
- Drop one or more PDF files onto the page.
- Enter the password twice and choose what readers may do.
- Click “Protect PDF” and download the encrypted files.
Frequently asked questions
How secure is it?
The file is encrypted with AES-256, the strongest encryption PDF supports. A long password that is hard to guess matters most.
What if I forget the password?
It cannot be recovered — not by us either, because the password never leaves your device. Keep a copy of the original file.
What is the permissions password?
It allows changing the printing, copying and editing restrictions. If you leave it empty, a random one is used, so nobody can lift them.
Do restrictions work in every viewer?
Mainstream viewers respect them, but they are an instruction to the viewer, not encryption. Only the open password truly protects the content.