Short user manual
Physically lock PDFs with AES‑256 or unlock them with the same password.
Add file open code and owner code Set print, copy, and edit permissions, or create an unencrypted copy with the original password, using QPDF WebAssembly in your browser.
Highlights of this tool
- Encrypt PDF with AES‑256
- Choose permissions to print, copy, and edit.
- The code and files reside only in the device's memory.
How to use Unlock / Password-Protect PDF
- 1Select password or unlock mode and open the PDF.
- 2Enter the code and set the required permissions.
- 3Process and download a new PDF copy.
Frequently asked questions
Can I unlock a PDF with an unknown password?
No, a valid user ID or owner ID is required. And you should only do this on documents that you have access to.
If I forget the password I set, can PDFdee recover it?
No, because PDFdee does not store code or copies of files. Please keep the code in a safe place.