Works in Any Browser
Protect PDFs using Chrome, Edge, Firefox, Safari, and more.
Password protect your PDF directly in your browser. No downloads, no installations, and no complicated setup—just secure PDF encryption online.

Encrypt PDF files directly from your web browser.
Installing desktop software is not always convenient, especially when you need to quickly secure a PDF on a shared or temporary device.
With iMZi PDF, you can password protect PDF files entirely in your browser. Upload your document, create a password, and download the protected PDF within minutes.
Secure your PDF in three simple steps.
Select the PDF you want to protect.
Encrypt your PDF with a secure password.
Save your encrypted PDF and share it safely.

Fast and secure browser-based PDF protection.
Protect PDFs using Chrome, Edge, Firefox, Safari, and more.
Keep confidential documents protected.
Everything runs online without installation.
Your PDF files remain private during processing.
Encrypt PDF documents online without installing desktop applications or browser extensions.
Find answers to common questions about this tool.
Encrypt PDF documents online without installing software using iMZi PDF.