Examine source code of Fast Page Bottom

{
  "manifest_version": 2,
  "name": "__MSG_extensionName__",
  "version": "5.1",
  "description": "__MSG_extensionDescription__",
  "icons": {
    "16": "icons/pratikabu-stt-16.png",
    "48": "icons/pratikabu-stt-48-1.png",
    "128": "icons/pratikabu-stt-128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{b3e1a6c1-3d3e-1d9e-0f5c-5b5f53dfd3cd}",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "collects_data": false
      }
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "css": [
        "pratikabu-stt.css"
      ],
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "thirdparty/jquery-3.7.1.min.js",
        "pratikabu-stt.js"
      ]
    }
  ],
  "permissions": [
    "storage",
    "activeTab",
    "contextMenus"
  ],
  "options_ui": {
    "page": "options/options.html",
    "open_in_tab": true
  },
  "web_accessible_resources": [
    "icons/*.png"
  ],
  "browser_action": {}
}