Examine source code of Save Page as TXT

{
  "manifest_version": 2,
  "name": "Save Page as TXT",
  "version": "1.0",
  "description": "Save the current page text as a TXT file.",
  "permissions": [
    "activeTab",
    "downloads",
    "tabs"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "64": "icon64.png"
    }
  },
  "icons": {
    "64": "icon64.png",
    "128": "icon128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{d7b26f37-e7f7-4011-88d2-49224ca99995}",
      "strict_min_version": "110.0"
    }
  }
}