Examine source code of Multi Copy Paste

{
  "manifest_version": 2,
  "name": "Multi Copy Paste",
  "description": "Copy and paste multiple contents from a webpage",
  "version": "0.0.1",
  "browser_action": {
    "default_icon": "icons/icon16.png",
    "default_popup": "index.html",
    "default_title": "Multi copy paste"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "64": "icons/icon64.png",
    "128": "icons/icon128.png",
    "720": "icons/icon720.png"
  },
  "permissions": [
    "storage",
    "contextMenus"
  ],
  "web_accessible_resources": [
    "public/*"
  ]
}