Protect PDF with Password Free
Password protect your PDF files online for free. Add encryption to prevent unauthorized access. Secure your documents.
Start Now — It's FreeNo registration required
Key Features
About This Tool
Secure your PDF documents with password protection and encryption. Set a password that users must enter to open the document, and optionally set separate permissions to control printing, copying, and editing. We use strong 256-bit AES encryption, the same standard used by banks and governments.
How It Works
Upload Your PDF
Drag and drop or click to upload your file. We support files up to 100MB.
Automatic Processing
Our tool automatically processes your file in just a few seconds.
Download Result
Download your processed file instantly. No email or registration required.
Frequently Asked Questions
We use 256-bit AES encryption, which is the industry standard for secure documents and is virtually unbreakable.
Yes, you can set granular permissions: allow/prevent printing, copying text, editing, and more independently.
There is no way to recover a forgotten password. We recommend storing passwords securely.
You'll need to first unlock the PDF with its current password, then add new protection.
Try Protect PDF with Password Free
Free, no sign-up required.