SharePoint column formatting - Image with URL

sharepoint-field-formatting-image-with-url.json

{
    "$schema": "https://developer.microsoft.com/json-schemas/sp/column-formatting.schema.json",
    "elmType": "div",
    "children": [
        {
            "elmType": "a",
            "attributes": {
                "href": "https://blog.velingeorgiev.com",
                "target": "_blank"
            },
            "children": [
                {
                    "elmType": "img",
                    "attributes": {
                        "src": "= @currentWeb + '/SiteAssets/Badges/1-' + @currentField + '.png'"
                    },
                    "style": {
                        "width": "128px",
                        "height": "128px",
                        "cursor": "pointer"
                    }
                }
            ]
        }
    ]
}