Protect PDF
Encrypt your PDF with a password and control what others may do with it — printing, copying, and editing. The file is encrypted locally in your browser.
Drop a file here or choose from device
Accepted: PDF · up to 50MBRecent files
Prefer a visual editor?
Open in PDF Editor
Open the file in the full PDF editor — drag pages, add text, shapes, signatures and more.
Processing your file…
This stays on your device — nothing is uploaded.
How it works
How to protect pdf
Upload the PDF to protect.
Set a strong password.
Choose which permissions to allow, then download.
FAQ
Protect PDF — frequently asked
Yes. Protect PDF is free to use with no account required, no watermarks on your output and no hidden limits.
No. Protect PDF runs entirely in your browser — your file never leaves your device.
Protect PDF accepts PDF files.
Yes — the whole workspace is fully responsive and works the same way on mobile browsers.