Cross-Platform Support
Works on Windows, Mac, Linux, Android, iPhone, and tablets.
Protect PDF on Any Device
Secure PDF files with password protection from your desktop, laptop, tablet, or smartphone. No software installation required.
Secure PDFs from Any Device
Encrypt PDF files wherever you are.
Whether you use a Windows PC, Mac, Linux computer, Android phone, iPhone, or tablet, you can protect your PDF documents in just a few clicks.
With iMZi PDF, password protection works online across all modern devices, making it easy to secure confidential PDFs before storing or sharing them.
How to Protect PDFs on Any Device
Secure your PDF in three simple steps.
1. Upload Your PDF
Choose the PDF file from your device.
2. Add a Password
Encrypt your PDF with a strong password.
3. Download the Protected PDF
Save the encrypted PDF to your device.
Why Choose iMZi PDF
Protect PDFs from virtually any device.
Strong PDF Encryption
Protect confidential documents with a secure password.
No Installation Needed
Everything works directly in your browser.
Private & Secure
Your PDF files remain private during protection.
Password Protect PDFs from Any Device
Secure PDF documents online whether you are using a desktop computer, laptop, tablet, or smartphone.
Windows PC
Mac
Android Phone
iPhone & iPad
Linux Computer
Chromebook
Frequently Asked Questions
Find answers to common questions about this tool.
Protect PDFs from Any Device
Add password protection to PDF files online from any device using iMZi PDF.