Works on Android & iPhone
Protect PDFs from any mobile browser.
Protect PDF on Mobile Online
Password protect your PDF directly from your Android phone or iPhone. No app download or software installation required.
Secure PDFs from Your Mobile Device
Protect PDF documents online using your smartphone.
Need to secure a PDF while you're away from your computer? You can easily add password protection using your Android phone or iPhone.
With iMZi PDF, simply upload your document from your mobile browser, create a password, and download the protected PDF in minutes.
How to Protect a PDF on Mobile
Secure your PDF in three easy steps.
1. Upload Your PDF
Select the PDF from your phone or cloud storage.
2. Set a Password
Encrypt the PDF with a strong password.
3. Download the Protected PDF
Save the encrypted PDF back to your device.
Why Choose iMZi PDF
Fast mobile PDF protection without apps.
No Mobile App Needed
Everything works online in your browser.
Strong Password Protection
Encrypt your PDFs with secure password protection.
Private & Secure
Your files remain private during processing.
Password Protect PDFs on Your Phone
Secure PDF documents online from your Android phone or iPhone without downloading an app.
Email Attachments
Work Documents
School Files
Cloud Storage Files
Personal Documents
Confidential PDFs
Frequently Asked Questions
Find answers to common questions about this tool.
Protect PDFs on Mobile for Free
Secure PDF documents online from your Android phone or iPhone using iMZi PDF.