Examine source code of Daily Inspiration

{
  "manifest_version": 3,
  "name": "Daily Inspiration",
  "version": "1.1",
  "browser_specific_settings": {
    "gecko": {
      "id": "daily.inspiration@viraware.com",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "collects_data": false,
        "description": "This extension does not collect any user data."
      }
    }
  },
  "description": "31 Daily boosts of inspiration, turning tiny moves into powerful change.",
  "author": "Babak Arjomandi",
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  }
}