Choose one or more PDFs
Reorder multiple files and decide whether to combine them before protection.
PDF security
Protect PDF with a password
Secure one or more PDFs. Optionally merge multiple files before applying one password.
Secure processing
Choose PDF files to protect
One or multiple PDFs, up to 50 MB each
Choose PDFsWhat the Protect PDF tool does
Require a password whenever someone opens the generated PDF.
Set one password
Confirm the password to prevent typing mistakes before processing begins.
Download protected output
Receive one protected PDF, or a ZIP of individually protected PDFs when merge is disabled.