Protect a PDF with one opening password using AES-256 encryption. Printing, copying, editing, annotation, and form permissions remain enabled.
Drop PDF here or click to open
Supports PDF files up to 100MB
Select the PDF file to protect.
Enter the one password that will be required to open the PDF.
Get your encrypted document.
Yes. OnePDFs is free to use, requires no account, and does not add an extra OnePDFs branding watermark; watermark tools add only the watermark you choose.
The PDF and password are sent over HTTPS to our processing service. The temporary output is deleted when the response finishes; interrupted-transfer leftovers enter periodic cleanup after the one-hour retention window. A browser copy can remain in this site's IndexedDB until you clear site data or the browser evicts it.
The service applies AES-256 encryption with one password required to open the PDF.
Not currently. The service uses the same password for user and owner access and keeps printing, copying, editing, annotation, and form permissions enabled.