manifest2.json

{
    "dir" : "ltr",
    "lang" : "en",
    "name" : "Matrix PWA 2.0",
    "display" : "minimal-ui",
    "id" : "index.html",
    "short_name" : "Matrix",
    "theme_color" : "green",
    "description" : "PWA testing site",
    "orientation" : "any",
    "background_color" : "#FFFFFF",
    "additional_search_terms" : [ "mustjab", "matrix" ],
    "icons" : [
        {
            "src": "icon.png",
            "sizes": "512x512"
        },
        {
            "src": "icon-192.png",
            "sizes": "192x192"
        },
        {
            "src": "icon-144.png",
            "sizes": "144x144"
        },
        {
            "src": "icon-96.png",
            "sizes": "96x96"
        }],
    "protocol_handlers": [
        {
            "protocol": "mailto",
            "url": "https://mustjab.github.io/index.html?mailto=%s"
        }
    ]
}