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How to Encrypt a File with a Password (Free, Works on a Phone)

Published: Oct 19, 2026 | Updated: Oct 19, 2026 | About (Japanese)

Key points
  • Choose a file
  • Set a password
  • Encrypt and save

Encrypt a File encrypts a file with a password.

Steps

  1. Tap "Choose a file" and select it
  2. Choose "Encrypt" and enter the password twice
  3. Tap "Encrypt and save"
The encrypted file is saved with a ".pmk" extension.
Use "Encrypt and Decrypt a File with a Password" (free)

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