Examine source code of Daily Fun Booster

{
  "manifest_version": 2,
  "name": "Daily Fun Booster",
  "version": "1.0",
  "description": "Get a daily dose of laughter with jokes and fun facts.",
  "permissions": [],
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": "icon.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{1bfbc151-18fa-48dd-ad85-b018e405f986}"
    }
  }
}