Protect PDF
FreeLock a PDF so it asks for a password before it opens. Optionally limit printing, copying and editing. Encryption happens in your browser, so the file and password never leave your device.
How to use Protect PDF
- 1Add the PDF you want to protect.
- 2Type a password twice, or let the tool suggest a strong one.
- 3Optionally limit printing, copying or editing, then select Protect PDF and download.
Private by design. This tool runs in your browser. Nothing you enter or add is uploaded.
Frequently asked questions
How secure is the encryption?
Files are encrypted with AES-256, the strongest standard PDF encryption, supported by Adobe Acrobat, browsers and most PDF apps.
Can you recover my password if I forget it?
No. The password never leaves your device and is not stored anywhere, so keep it somewhere safe.
Do the printing and copying limits always work?
Most PDF readers respect them, but they are an honour system: some apps ignore them. The open password itself cannot be bypassed.
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