AG File ToolsSimple Tools. Real Results.
EN
EnglishENEspañolESDeutschDEFrançaisFR日本語JA한국어KO

Password Protect a PDF Online

Add password protection to a PDF locally in your browser.

Step 1Upload your file

Drop your PDF here

or

Processing stays on this device.

ResultResult ready
Preview appears here

↓ Download
Want better quality?

A slightly larger file usually keeps more detail.

Step 2Choose settings
Step 3Protect PDF

Choose a file to begin.

Reserved ad space outside the working flow

You may also need

🔓Unlock PDFRemove PDF password protection when you know the current password.→◎PDF Metadata CleanerClear common PDF document metadata locally.→✎Sign PDFPlace a typed or image signature on a PDF page.→

How Protect PDF works

Protect a PDF with a password online using browser-side PDF encryption. Your PDF and password stay on your device during processing.

What you provide
A PDF plus a password you choose.
What AG File Tools returns
A new password-protected PDF created by the browser-side PDF engine.
Practical limit
Password protection controls opening the document but cannot prevent screenshots or authorized viewers from reproducing visible information. Keep the password safely.
1Provide

A PDF plus a password you choose.

2Configure

Add a password to a PDF

3Process locally

Your browser performs the work on this device.

4Use the result

A new password-protected PDF created by the browser-side PDF engine.

Supported workflow

  • Add a password to a PDF
  • Encrypt locally in your browser
  • Keep the source file unchanged