... files.
If necessary, Please change the charset="UTF-8" to charset="Your Charset" to match your language's charset value in the index.html file. Check Google if you need to know your language's html charset value.
This Application works offline, without needing an Internet Connection.
Also, run this application on your internet browsers in Kiosk mode, for maximum secrecy. For details, please refer : https://ostechnix.com/launch-web-browsers-in-kiosk-mode-full-screen-from-cli/ See Below.