Is Protect PDF with Password free?

Yes, Protect PDF with Password on PDF Merge Toolkit is completely free. No subscription, no sign-up, and no watermarks on your output.

Are my files safe when using Protect PDF with Password?

Yes. All files are transferred over 256-bit SSL encryption and are permanently deleted from our servers within 30 seconds of processing. We never read or store your document contents.

Do I need to create an account?

No account or sign-up is required. Simply visit the page, upload your file, and download the result.

What is the maximum file size?

The maximum file size is 20 MB per upload. For larger files, try compressing your PDF first using our free Compress PDF tool.

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All Tools

Protect PDF with Password Online Free

Add 128-bit encryption & set permissions — no sign-up, no watermark

Drag & drop your PDF here

Passwords

User Password *

Owner Password *

User — required to open Owner — controls permissions

Permissions — click to toggle

Allow Printing

Recipients can print this document

Allow Copy & Paste

Text and images can be copied

Allow Modification

Document content can be edited

Max file size: 20 MB. One PDF only. Output is an encrypted .pdf.

Tool Guide

Why use Protect PDF with Password Online?

Upload your PDF, set a password, and optionally restrict printing, copying, and editing. Our tool applies AES 256-bit encryption — the same standard used by banks. Download your protected PDF instantly.

AES 256-bit password encryption
Set separate user and owner passwords
Restrict printing, copying, and editing
Instant — no software to install

Upload

Select or drag your file

Process

One click — done instantly

Download

Save your result file