Proteger PDF
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100% privado: procesado localmente en su navegador
Configuraciones populares
Open Password
Set a password that must be entered before the PDF can be viewed. Without the password, the document cannot be opened.
Permissions Control
Restrict printing, copying text, and editing. Recipients can view the document but cannot extract or modify content.
Strong Encryption
PDFs are encrypted using AES-256, the same standard used by financial institutions and government agencies.
How to Password Protect PDF Online
- 1
Open the PDFlys Protect tool and upload your PDF.
- 2
Enter a password for opening the document.
- 3
Optionally set a permissions password and choose which actions to restrict.
- 4
Click Protect to apply encryption.
- 5
Download the password-protected PDF.
FAQ
What encryption standard is used?▾
PDFlys uses AES-256 encryption, which is widely considered secure and is the standard used by banks and government agencies.
Can I set different passwords for opening and editing?▾
Yes. You can set an open password (required to view the PDF) and a separate permissions password (required to change restrictions like printing or copying).
Is the password applied in my browser?▾
Yes. Encryption is performed entirely in your browser. Your PDF and password are never sent to a server.
What happens if I forget the password?▾
There is no way to recover the password. If you forget it, the PDF cannot be opened. Always store your passwords securely.
Can I protect a PDF and still allow printing?▾
Yes. The permissions settings let you choose which actions are restricted. You can allow printing while still requiring a password to open the file.