Generate

For the PWA the icons and the splashscreen can be modified in the config/manifest.json file:

{
    "name": "Your App Name (45 characters max)",
    "short_name": "Your App",
    "description": "Your App description",
    "default_locale": "en",
    "start_url": "index.html",
    "display": "standalone",
    "lang": "en-US",
    "icons": [
        {
            "src": "assets/icons/icon_48.png",
            "sizes": "48x48",
            "type": "image/png"
        },
        [...]
    ],
    "background_color": "#4e8ef7",
    "theme_color": "#4e8ef7"
}

Change name, short_name, description, background_color and theme_color, then go to config/assets/icons and replace each icons and favicon with your own logo at the exact same size and file type (png).

Browser compatibility

Web App Manifest reference documentation: https://developer.mozilla.org/en-US/docs/Web/Manifest