WebApp Finder: Extension tool without extensions

{
    "update_url": "https:\/\/clients2.google.com\/service\/update2\/crx",
    "manifest_version": 3,
    "name": "WebApp Finder: Extension tool without extensions",
    "description": "No need to install extensions for every small task when a web app can do it too.",
    "version": "3.4.0",
    "icons": {
        "16": "icons\/16.png",
        "32": "icons\/32.png",
        "48": "icons\/48.png",
        "128": "icons\/128.png"
    },
    "permissions": [
        "activeTab",
        "storage"
    ],
    "background": {
        "service_worker": "background.js"
    },
    "action": {
        "default_title": "Default Popup Title",
        "default_popup": "popup.html"
    }
}