open-webui/backend/open_webui/static/site.webmanifest

{
	"name": "Open WebUI",
	"short_name": "WebUI",
	"icons": [
		{
			"src": "/static/web-app-manifest-192x192.png",
			"sizes": "192x192",
			"type": "image/png",
			"purpose": "maskable"
		},
		{
			"src": "/static/web-app-manifest-512x512.png",
			"sizes": "512x512",
			"type": "image/png",
			"purpose": "maskable"
		}
	],
	"theme_color": "#ffffff",
	"background_color": "#ffffff",
	"display": "standalone"
}