Password-protect your PDF files
Securely password-protect your PDF files online. Encrypt your sensitive documents to prevent unauthorized access, viewing, or printing. This tool uses strong encryption to ensure your files stay safe. All processing is done locally in your browser—your password and file never leave your device.
Strong Encryption
Uses standard PDF encryption to ensure only users with the password can open the file.
Custom Password
Set any alphanumeric password to lock your document instantly.
Privacy Guaranteed
Password hashing and file encryption happen entirely in your browser memory.
Fast Execution
Secure your documents in seconds without any server-side wait times.
Click 'Upload PDF' or drag your file into the secure area
Enter a strong password in the input field
Click 'Protect PDF' to encrypt your document
Download your newly secured PDF file
Peace of mind for sensitive document sharing
Prevents unauthorized printing and viewing
Meets security standards for official document handle
100% private—password is never sent to our servers
Unlike other websites, we do NOT upload your files to our servers. All processing happens securely inside your device (browser).
Because we process everything locally and don't store your data, we cannot recover forgotten passwords. Please keep your password safe.
Yes, standard PDF readers on Android, iOS, Windows, and macOS will prompt for the password before opening.