PDF tool · runs in your browser
Protect PDF
Lock a PDF with a password using strong AES-256 encryption, and optionally stop printing, copying or editing.
- No uploads
- Free
- No sign-up
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Good to know
- Use a long password you can remember: it can’t be recovered.
- Restrictions (no printing/copying) are respected by most PDF readers.
- Your password never leaves your device.
Questions & answers
How secure is the protection?
PDFs are encrypted with AES-256, the strongest standard PDF encryption. Your password and file never leave your device.
Is it really free?
Yes. Every Feemag tool is free, with no sign-up, no watermarks added by us and no daily limits.
Are my files uploaded anywhere?
No. Your files are processed by your own browser on your device and never uploaded to a server. That also makes it fast, even on big files.
Does it work on my phone?
Yes: in any modern browser (Chrome, Safari, Edge or Firefox) on iPhone, Android, Mac, Windows and Linux.
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