Convert to PDF Now
Convert from PDF
PDF to Word
PDF to Excel
PDF to PowerPoint
PDF to JPG
PDF to PNG
Convert to PDF
Word to PDF
Excel to PDF
PowerPoint to PDF
JPG to PDF
PNG to PDF
HEIC to PDF
HTML to PDF
Webpage to PDF
TXT to PDF
Password protect PDF
Password Protect PDF
Add a password to encrypt your PDF in seconds
Or drop your PDF in the window
How to Password Protect a PDF
Step 1: "Choose File" from your computer
Choose the PDF you want to encrypt. Note that we only provide password and encryption support for PDF files.
Step 2: "Open" or drag-and-drop your file
Once you've found the PDF you want to add a password to, open it in our Password Protect PDF tool to begin.
Step 3: "Enter your password" & "Save"
Begin encryption by adding a password to your PDF. Type your password and click "Save".
Step 4: "Download" your encrypted PDF
Your old PDF has been encrypted with a password. Click "Download" to receive your new password protected PDF.
Why use Big PDF Converter?
Quality: High-end file conversion
Privacy: Files deleted within 24 hours
Simple: Easy for anyone to use
Encryption: SSL & TLS-certified
Unlimited: Free conversions and downloads
Growing: New PDF tools added regularly