"./?utm_source=web_app_manifest", "display": "standalone", "orientation": "portrait", "background_color": "#f5f5f5", "theme_color": "#AF2F2F", "icons": [ { "src": "icon-512.png", "sizes": "512x512", "type": "image/png" }, { "src": "icon-192.png", "sizes": "192x192", "type": "image/png" } ] } Allows to: - Set application name - Display app in fullscreen - Set splash screen with icon and background - Add icons for application - Make app install on Home Screen https://developer.chrome.com/ extensions/manifest