Travel tab

{
    "update_url": "https:\/\/clients2.google.com\/service\/update2\/crx",
    "short_name": "__MSG_extName__",
    "name": "__MSG_extName__",
    "default_locale": "en",
    "icons": {
        "16": "favicon.png",
        "32": "favicon.png",
        "48": "favicon.png",
        "128": "favicon.png"
    },
    "action": {
        "default_icon": {
            "16": "favicon.png",
            "32": "favicon.png",
            "48": "favicon.png",
            "128": "favicon.png"
        }
    },
    "permissions": [
        "topSites"
    ],
    "chrome_url_overrides": {
        "newtab": "index.html"
    },
    "manifest_version": 3,
    "version": "1.0.0.0",
    "background": {
        "service_worker": "background.js",
        "type": "module"
    }
}