Password-protect PDF files
Protect PDF adds real PDF password encryption so the output document requires a password to open. It is designed for private documents, application files, and shared PDFs that should not be opened casually.
Tool workspace
Protect PDF with Password
Add real password protection to a PDF locally in the browser and download an encrypted PDF file.
Account required
Sign in to use Protect PDF with Password.
OmniToolbox is free to use right now, but processing tools require an account so usage stays protected and abuse-resistant.
Local encryption workflow
The password is used in the browser during the encryption step. Choose a password you can remember, because OmniToolbox does not store or recover document passwords.