Add a password to PDF
Protect important PDFs with an AES-256 password and, if needed, restrict printing, copying and editing.
Free · No sign-up · Files stay on your deviceHow to use
- Select a PDF file.
- Enter the open password twice. Optionally turn on print/copy/edit restrictions with a separate permissions password.
- Press protect and save the encrypted PDF.
FAQ
What if I forget the password?
The file can't be opened. DoguBox does not store passwords, so write it down somewhere safe.
Which encryption should I choose?
AES-256 is the most secure and recommended. Use AES-128 only for very old PDF viewers.
Are my files uploaded?
No. Encryption happens in your browser.
Want more tools? DoguBox has 33 tools in Korean, including PDF to Word/Excel, signatures and stamps. Open the Korean site with automatic translation →
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