How to Password Protect a PDF on Android (Free)
Add a password to a PDF on Android in Chrome — no app download, AES encryption done locally.
FixMyPDF's protect tool works in Chrome on Android. No app to install — just open the browser, upload from storage, set the password, and download the encrypted PDF.
Steps on Android
Open Chrome on your Android device. Go to fixmypdf.in/tools/protect. Tap Choose File and select your PDF from Downloads or Documents. Enter your password. Tap Protect and download.
Storage Access on Android
Chrome on Android will prompt for storage access when you first use the file picker. Grant permission to allow selecting files from your Downloads or internal storage.
Where Downloads Go
Protected PDFs download to your Android device's Downloads folder. Access them from the Files app or Downloads notification.
Privacy on Android
Processing runs in Chrome using WebAssembly. Your PDF and chosen password are never sent to any server.
Try Protect PDF Now — Free
Browser-based, private, and instant. No account or software required.
Open Protect PDF