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Building Real-Life Applications with Blazor WebAssembly

Working with Manifest Files

Learn how to use the manifest file.

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A manifest file provides information about an app in JSON format. It is usually in the root folder of an application. The following code snippet shows how to add a manifest file named manifest.json to the index.html file:

HTML
<link href="manifest.json" rel="manifest" />

Here is a sample manifest file that includes many possible fields:

C++
{
    "dir": "ltr",
    "lang": "en",
    "name": " 5-Day Weather Forecast",
    "short_name": "Weather",
    "scope": "/",
    "display": "standalone",
    "start_url": "./",
    "background_color": "transparent",
    "theme_color": "transparent",
    "description": "This is a 5-day weather forecast.",
    "orientation": "any",
    "related_applications": [],
    "prefer_related_applications": false,
    "icons": [
            {
            "src": "icon-512.png",
            "type": "image/png",
            "sizes": "512x512"
            }
    ],
    "url": "https://bweweather.azurewebsites.net",
    "screenshots": []
 }

As mentioned earlier, a manifest file must include the name of the application and at least one icon. Beyond that, everything else is optional, although is it highly recommended that we include description, short_name, and start_url as a minimum.

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