Protect PDF with Password
Add native PDF password encryption. Any PDF reader will ask for the password before opening.
Drop a PDF file or click to browse
Select the PDF you want to protect
How it works
Your PDF is encrypted using standard PDF password encryption (RC4 128-bit). This is the same encryption used by Adobe Acrobat. Every PDF reader will require the password to open the file. All processing happens in your browser — your file and password never leave your device.
Remember your password
There is no way to recover your PDF if you forget the password. Store it safely.
Protect Your PDFs with Password Encryption
PannaPDF's Protect tool adds native PDF password encryption to your files using industry-standard RC4 128-bit encryption. Your files and passwords are never sent to any server — all processing happens entirely in your browser. The protected PDF will require a password in any PDF reader including Adobe Acrobat, Chrome, Firefox, Apple Preview, and more.
How It Works
Upload your PDF
Drag and drop your PDF file or click to browse.
Set a password
Enter a strong password. Optionally restrict printing, copying, or editing.
Download protected PDF
Download your encrypted, password-protected PDF file.
Frequently Asked Questions
What encryption does PannaPDF use?▾
PannaPDF uses AES-128 or AES-256 encryption, the same standard used by banks and government agencies.
Can I restrict printing and copying?▾
Yes. You can set separate permissions for printing, copying text, and editing the document.
Is my password stored anywhere?▾
No. Encryption happens entirely in your browser. Your password is never sent to any server.
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