Protect PDF
PDF toolNewAdd a password and restrict printing or copying of a PDF.
This tool runs entirely in your browser. Your files never leave your device — nothing is uploaded.
Choose a PDF
Drop a PDF here or click to browsePDF · up to 25 MBBrowse files
Protect
Add a PDF to get started.
Frequently asked questions
Is my PDF or password uploaded?
No. Encryption runs in your browser using qpdf compiled to WebAssembly, so your PDF and password never leave your device.
How strong is the protection?
The PDF is encrypted with AES-256, the standard used by professional PDF tools. Restrictions are enforced with a separate, random owner password.
Can I restrict printing without a password to open?
Yes. Leave the open password blank and tick the restrictions you want — the PDF will open normally but block printing, copying or editing.