Free · No signup · 100% private
Protect PDF
Lock a PDF with a password before you email or share it.
Choose a PDF to protectWorks in your browser — your PDF never leave your device.
How to protect pdf
- Click “Choose a PDF to protect” and open your document.
- Type a password — and optionally untick printing, copying or editing.
- Click Protect & download to save the encrypted copy.
Why use ofyz
- Private by design — files are processed on your device; there is no server to upload to.
- Free with no limits — no file-size caps, no "tasks per hour", no account.
- Fast — no upload/download round trip.
Frequently asked questions
How strong is the protection?
Files are encrypted with AES-256, the strongest standard PDF encryption, supported by Adobe Acrobat, Chrome, Edge, macOS Preview and modern PDF readers.
What if I forget the password?
It can't be recovered — the encryption happens on your device and we never see the password. Keep a copy of the original or store the password safely.
Is it really free?
Yes. Merging, splitting, converting and page management are free forever, with no file-size limits and no signup.
Are my files uploaded to a server?
No. ofyz runs entirely in your browser, so your files never leave your device — there is no server that could store them.