Examine source code of X-Webpage-Conserve

{
  "manifest_version": 2,
  "name": "X-Webpage-Conserve",
  "version": "1.3",
  "description": "Save the current web page as a single HTML file and set the save directory.",
  "browser_action": {
    "default_icon": {
      "16": "icon16.png",
      "32": "icon32.png"
    },
    "default_title": "X-Webpage-Conserve",
    "default_popup": "popup/popup.html"
  },
  "permissions": [
    "activeTab",
    "downloads",
    "<all_urls>",
    "storage",
    "bookmarks",
    "tabs",
    "notifications"
  ],
  "background": {
    "scripts": [
      "github.js",
      "filename.js",
      "savepage.js",
      "summary.js",
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{4cff818e-74ed-42f1-a145-efb70f0e93be}"
    }
  }
}