EveryPDFToolPassword Protect PDF Online
Add a password to your PDF and create an AES-256 encrypted copy before sharing or storing it.
Drop your PDF here
or choose a file from your device
Maximum file size: 50 MBAdd a password to a PDF
Password protection helps prevent a PDF from being opened without the password you choose. EveryPDFTool creates a new AES-256 encrypted PDF copy while leaving your original file unchanged.
Passwords can contain between 4 and 128 characters. Keep your password somewhere safe because EveryPDFTool does not provide password recovery.
How to password protect a PDF
Encrypt a PDF with a password
Protect PDF helps you create a password-protected copy of a document before sharing or storing it. This can add an extra access layer for personal, business, administrative, or confidential files.
When to password protect a PDF
Use it when sending documents that contain information you do not want opened casually, especially when sharing files through email, cloud storage, messaging, or removable media.
Choose a strong PDF password
Use a password that is difficult to guess and avoid reusing passwords from important accounts. Store the password safely because forgetting it can make the protected PDF difficult or impossible to access.
Password Protect PDF vs Unlock PDF
Use Protect PDF to add a password. Use Unlock PDF only when you know the existing password and want to create an unlocked copy of an authorized document.
AES-256 PDF encryption
The protected PDF created by this tool uses AES-256 encryption. The password you choose is required to open the encrypted output file.
Important security note
Password protection can reduce casual access, but it should not be treated as a substitute for secure storage, controlled sharing, device security, or other appropriate safeguards for highly sensitive information.
Frequently asked questions
How do I password protect a PDF?
Upload an unprotected PDF, enter a password between 4 and 128 characters, select Protect PDF, and download the AES-256 encrypted copy.
What happens if I forget the password?
EveryPDFTool does not store passwords for recovery. Keep a safe copy of the password.
Can I protect an already encrypted PDF?
No. The current tool expects an unprotected PDF. Unlock an authorized protected PDF first if you know its existing password.
Is the password sent with the PDF download?
No. The password is used during processing and is not embedded as visible text.