Password Protect PDF Online
Secure your confidential documents by adding a strong password. Safely lock and encrypt your PDF files for free.
Select PDF file
Drop file here or click • Max 50MB
Set a Password
How to password protect a PDF file
Locking your sensitive documents to prevent unauthorized access is simple. Follow these steps to encrypt your PDF in seconds.
Upload your file
Click the "Choose File" button or drag and drop the PDF document you want to secure into the drop zone above.
Type a password
Enter a strong password. Make sure you remember it, as the file cannot be opened or recovered without it.
Encrypt & Download
Click "Protect PDF". Our tool will encrypt your file with 128-bit AES encryption. Download your newly locked PDF.
Bank-Grade Security
We use 128-bit AES (Advanced Encryption Standard) to lock your documents. This ensures that your files are protected from prying eyes and can only be opened by someone who has the exact password.
Absolute Privacy
Your files are yours alone. All processing happens over a secure SSL connection, and your uploaded as well as protected files are permanently deleted from our servers within 60 minutes.
Works on All Devices
No need to download heavy software. Our free PDF locker works entirely in your web browser. Whether you are on Windows, Mac, Linux, iOS, or Android, you can secure your files instantly.
Prevents Editing & Copying
Adding a password doesn't just stop people from opening the file; it also restricts unauthorized users from copying your text or modifying the contents of your confidential documents.