PDF TOOL
Protect PDF
Lock your PDF with a password so only people who know it can open it.
Choose your PDF
Drag & drop a PDF here, or choose it from your device.
PDF · Max 50 MB
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Protect PDF online
Protect a PDF with a password online. The file is encrypted with AES-256, and you decide whether people may print, copy or edit it.
How to use Protect PDF
- Choose your PDF.
- Type a password twice.
- Choose what people are allowed to do: print, copy, or edit.
- Press Protect PDF and download the protected file.
Frequently asked questions
Can you recover a lost password?
No. We do not store your password, so keep it somewhere safe. Your original unprotected file is not changed.
What encryption is used?
AES-256.
Can people without the password open it?
No. A PDF reader asks for the password first.
Can I protect a file that already has a password?
Not directly. Remove its password first with Unlock PDF.