Does it support already encrypted PDFs?

No. This version is for adding a new password to an unencrypted PDF.

Can permissions be changed later?

Permissions are chosen when the new PDF is generated. To change them, run the tool again.

Add a password to a PDF and define the core permissions for that document.

PDF100 MB / file

Tool area

Protect a PDF with a password and control whether printing, copying, or editing remain allowed.

This tool adds a new password. It is not intended for editing or unlocking PDFs that are already encrypted.

Select PDF file

Select one PDF file.

A practical document protection tool for teams that want to password-protect files before sharing them.

Quick note

This tool adds a new password to unencrypted PDFs. It is not an unlocker for files that are already protected.

Internal links

Continue from this page with these related tools:

Core settings

Open password

Define the password required to open the document.

Permissions

Choose whether printing, copying, and editing should stay available.

Why this tool helps

Makes document sharing more secure.

Adds a security-focused flow to the PDF toolkit.

Sign PDF

Add a typed or image-based signature block to a PDF and download the new output.

Remove Watermark from PDF

Select the visible watermark area on the PDF preview and download a cleaned copy.

Merge PDF

Combine multiple PDF files into one clean output.