Examine source code of Nova Tab - Stellar Dashboard New Tab

{
  "manifest_version": 2,
  "name": "__MSG_appName__",
  "version": "1.0.2",
  "default_locale": "en",
  "description": "__MSG_appDesc__",
  "browser_specific_settings": {
    "gecko": {
      "id": "nova-tab@extension",
      "strict_min_version": "91.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "chrome_url_overrides": {
    "newtab": "newtab/index.html"
  },
  "permissions": [
    "storage",
    "tabs",
    "https://duckduckgo.com/",
    "https://api.open-meteo.com/",
    "https://geocoding-api.open-meteo.com/",
    "https://open.er-api.com/",
    "https://www.google.com/",
    "https://picsum.photos/",
    "https://fastly.picsum.photos/",
    "https://api.coingecko.com/",
    "https://api.allorigins.win/",
    "https://api.github.com/",
    "https://ws.audioscrobbler.com/"
  ],
  "browser_action": {
    "default_popup": "popup/index.html",
    "default_title": "Nova Tab Settings",
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  }
}