Utilities tool
Protect PDF
Add genuine password protection to a PDF locally in your browser.
Processed in your browser unless a tool explicitly says otherwise.
Use the toolNo account required
STEP 1
Choose a PDF
Set an open password for an authorized PDF. Everything stays in your browser.
How it works
A focused workflow for a focused task.
Enter the information the tool asks for, review the result, and use the output for your next step. Zobnu keeps browser-first utilities straightforward and transparent.
Privacy note
Your inputs stay in this browser unless the tool clearly indicates that an external provider is required.