Encrypt PDF
Protect a PDF with a password to prevent unauthorized opening
calendar_today Last updated: June 20, 2026
Drop your PDF here
or click to choose a file
PDF only · up to 50 MB
Sahel's PDF protection tool encrypts a PDF with a password using the AES standard, preventing it from opening without the correct password, to protect confidential documents and contracts, free and instant.
help_outline
How does this tool work?
1
Upload a PDF
Choose the document you want to protect.
2
Set the password
Type a strong password to encrypt the file.
3
Download the protected
Get an encrypted PDF that opens only with your password.
Frequently asked questions
What encryption strength is used? expand_more
The tool uses strong AES encryption that prevents opening the file without the correct password.
What if I forget the password? expand_more
The file cannot be recovered without the password, so save it somewhere safe before protecting.
Can the protection be removed later? expand_more
Yes, you can remove it via the "Decrypt PDF" tool if you know the password.
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