Examine source code of Ethicli

{
  "name": "Ethicli",
  "version": "0.6.15",
  "description": "To help you make ethical online shopping choices",
  "background": {
    "page": "background.html"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "browser_action": {
    "default_popup": "views/popupNotShop.html",
    "default_title": "Ethicli",
    "default_icon": {
      "16": "icons/grey-16.png"
    }
  },
  "permissions": [
    "tabs",
    "storage"
  ],
  "icons": {
    "16": "icons/ethicli-16.png",
    "32": "icons/ethicli-32.png",
    "48": "icons/ethicli-48.png",
    "128": "icons/ethicli-128.png"
  },
  "options_ui": {
    "page": "views/options.html",
    "open_in_tab": false
  },
  "manifest_version": 2
}