Examine source code of Slotozilla

{
  "description": "Adds a browser opportunity to use fast access to the main site sections. ",
  "manifest_version": 2,
  "name": "Slotozilla",
  "version": "1.1resigned1",
  "homepage_url": "https://www.slotozilla.com",
  "icons": {
    "48": "icons/beasts-48.png"
  },
  "permissions": [
    "activeTab"
  ],
  "browser_action": {
    "default_icon": "icons/beasts-32.png",
    "theme_icons": [
      {
        "light": "icons/beasts-32-light.png",
        "dark": "icons/beasts-32.png",
        "size": 32
      }
    ],
    "default_title": "Slotozilla",
    "default_popup": "popup/choose_beast.html"
  },
  "web_accessible_resources": [
    "js/jquery-3.3.1.min.js",
    "js/moment.min"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{64bb384f-aba4-402e-99b5-d7bee6d8794a}"
    }
  }
}