Examine source code of Quiver Web Clipper

{
  "manifest_version": 2,
  "name": "Quiver Web Clipper",
  "version": "1.2.2",
  "author": "Yaogang Lian",
  "description": "Quiver Web Clipper lets you clip web pages as Quiver notes. It also provides a clutter-free Reader View.",
  "icons": {
    "16": "images/icon-16.png",
    "32": "images/icon-32.png",
    "48": "images/icon-48.png",
    "128": "images/icon-128.png"
  },
  "background": {
    "scripts": [
      "bg.js"
    ],
    "persistent": false
  },
  "permissions": [
    "clipboardWrite",
    "activeTab",
    "contextMenus"
  ],
  "browser_action": {
    "default_title": "Quiver Web Clipper",
    "default_icon": {
      "19": "images/menu-icon-19.png",
      "38": "images/menu-icon-38.png"
    }
  },
  "web_accessible_resources": [
    "overlay/*"
  ]
}