Encrypt your sensitive documents directly in your browser. No server uploads. 100% Private.
Drag & Drop your PDF here or Click to Browse
Client-Side Processing: Your files never leave your device.
Select your file. We support any PDF document size handled by your browser.
Enter a password. Our script wraps your PDF in 128-bit AES encryption instantly.
The protected file is generated locally. Save it immediately to your device.
Using pdf password protect online tools can be risky if files are uploaded. We process everything client-side.
No waiting for uploads or downloads from a server. Encryption happens at the speed of your CPU.
Works on Windows, Mac, Linux, and mobile devices directly in Chrome, Safari, or Firefox.
We use JavaScript to read your file structure and apply AES encryption logic directly within your browser's memory. The data stream never travels over the internet.
Yes, PDFProtector is completely free to use with no limits on the number of files.
Absolutely not. If you disconnect your internet, the tool will still work. That is the beauty of client-side technology.
Standard PDF encryption is very secure. If you lose the password, the file cannot be recovered by us or anyone else.