{ "short_name": "GoRetro", "name": "GoRetro", "icons": [ { "src": "favicon.ico", "sizes": "64x64 32x32 24x24 16x16", "type": "image/x-icon" }, { "src": "favicon-r.png", "type": "image/png", "sizes": "247x247" } ], "start_url": ".", "display": "standalone", "theme_color": "#000000", "background_color": "#ffffff" }