Secure your sensitive PDF documents with strong password encryption. Set an open password to restrict access and a permissions password to control what recipients can do with the file.
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⬇️ Download Protected PDFSensitive documents — contracts, financial reports, medical records, confidential proposals — deserve strong protection. DocsFlow's free PDF protection tool adds industry-standard AES encryption to your PDFs, ensuring only authorized recipients can access your content.
Open Password (User Password): The recipient must enter this password to open and view the PDF. Without it, the document cannot be accessed at all. Use this for truly confidential documents.
Permissions Password (Owner Password): Controls what can be done once the PDF is open. You can restrict printing, text copying, editing, and commenting. The document can be read without this password, but restricted actions will be blocked.
128-bit AES: Compatible with all PDF viewers and offers very strong security for most use cases. 256-bit AES: Maximum security, used for top-confidential documents. Requires PDF 1.7+ compatible viewers (all modern apps qualify).
Your password is used only during the encryption process. It is never stored, logged, or visible to anyone at DocsFlow. The encrypted PDF and the password are processed in memory and the file is deleted after one hour.
User (open) password is required to open and read the PDF. Owner (permissions) password controls restrictions like printing and copying without blocking access.
Yes. AES 128-bit and 256-bit are government-grade encryption standards effectively unbreakable with strong passwords. Used by banks, governments, and enterprises worldwide.
Yes. Use our Unlock PDF tool, provide the correct password, and the protection will be removed.
Never. Your password is used only during encryption and is not stored, logged, or accessible after processing.
Yes. Standard PDF encryption is supported by Adobe Acrobat, Chrome, Firefox, macOS Preview, Foxit, and all major mobile PDF apps.