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Add password protection to your PDF files with 128-bit encryption. Set separate user and owner passwords for flexible security control.
Drag and drop a PDF file onto the upload area, or click to browse.
Enter a user password (required to open the PDF). Optionally set an owner password for extra control.
Click Encrypt & Download. Your PDF is encrypted with 128-bit security.
Yes, 100% free. No hidden costs, no account needed, no watermarks.
128-bit RC4 encryption (PDF Standard Security Handler, Revision 3), supported by all major PDF readers.
The user password is required to open the PDF. The owner password grants permission to modify the document or change security settings.
Files never leave your browser. All encryption is done using JavaScript running locally on your device.