What happens if I forget the PDF password?

Password-protected PDFs cannot be opened without the correct password. Store your password in a secure password manager.

What encryption strength is used?

The tool uses 256-bit AES encryption by default, which is the industry-standard protection level for PDFs.

Can I restrict printing but still allow opening?

Yes. Set an open password for access, and set a separate permissions password to restrict printing, copying, or editing.

Will the protected PDF work in all PDF readers?

Yes. Password-protected PDFs are a standard feature supported by Adobe Acrobat, macOS Preview, Google Chrome, and all major PDF applications.

Password Protect PDF

Add password protection and set permissions for your PDF document

Password Protect PDF

Add password protection and set permissions for your PDF document

Online ProcessingSecure EncryptionServer Required

This feature requires server-side processing for PDF encryption

Drag & Drop Your PDF Files

Or click to browse and select files

Choose File

Supported format: PDF files onlySingle PDF File

Learn more about Protect PDF

About Protect PDF

Secure sensitive PDF documents by adding password encryption. Set a password that must be entered to open the file, and optionally restrict printing, copying, or editing with a separate permissions password.

Key features

Encrypt PDF with a user open password
Set separate permissions password to restrict printing/copying
Supports 128-bit and 256-bit AES encryption
Compatible with all PDF readers (Adobe, Preview, Chrome, etc.)
Entirely browser-based — your file is never uploaded

How to use Protect PDF

1Upload the PDF you want to password-protect
2Enter your desired password (and confirm it)
3Optionally set permissions to restrict printing or editing
4Click "Protect PDF" and download the encrypted file

Frequently asked questions

What happens if I forget the PDF password?: Password-protected PDFs cannot be opened without the correct password. Store your password in a secure password manager.
What encryption strength is used?: The tool uses 256-bit AES encryption by default, which is the industry-standard protection level for PDFs.
Can I restrict printing but still allow opening?: Yes. Set an open password for access, and set a separate permissions password to restrict printing, copying, or editing.
Will the protected PDF work in all PDF readers?: Yes. Password-protected PDFs are a standard feature supported by Adobe Acrobat, macOS Preview, Google Chrome, and all major PDF applications.