{ "short_name": "Smart Buttons", "name": "Smart Buttons Web Portal", "icons": [ { "src": "favicon.png", "sizes": "64x64 32x32 24x24 16x16", "type": "image/png" }, { "src": "favicon144.png", "sizes": "144x144", "type": "image/png" } ], "start_url": "./index.html", "display": "standalone", "theme_color": "#000000", "background_color": "#ffffff" }