PDF Tool

Protect PDF with Password

Encrypt your PDF with passwords and set printing, copying, and editing permissions.

Upload PDF

User Password (to open)

Owner Password (to restrict)

Permissions (requires Owner Password)

Allow Printing Allow Copying Allow Editing

Original Size-

Protected Size-

Upload a PDF to protect with a password.

Quick Guide

Step 1: Upload your PDF file via file picker or drag & drop
Step 2: Set a strong password for encryption
Step 3: Choose permission controls (print, copy, edit restrictions)
Step 4: Click Protect and download secured PDF

What is Protect PDF with Password?

Protect PDF adds password protection to PDF documents. See also: unlock-pdf or sign-pdf.

How It Works

Upload or load your PDF into the tool, configure the settings as needed, and click the process button. The tool reads and modifies the PDF structure using client-side JavaScript libraries, then generates a downloadable output file. Your documents never leave your browser.

Use Cases

Professionals who need to modify PDF documents quickly without Adobe Acrobat
Students annotating or organizing research papers and study materials
Anyone who needs a fast, private way to edit PDF files on any device

Frequently Asked Questions

Is the Protect PDF with Password free?

Yes, the tool is 100% free with no file size limits or usage restrictions.

Are my PDF files uploaded to a server?

No, all processing happens in your browser using JavaScript. Files never leave your device.

What browsers are supported?

The tool works on all modern browsers including Chrome, Firefox, Safari, and Edge.

Related Tools

Unlock PDF

Remove password protection

Sign PDF

Add digital signature

Compress PDF

Reduce file size