Examine source code of np beta

{
  "manifest_version": 2,
  "name": "Net-Pocket: Automatyczna porównywarka cen",
  "short_name": "net-pocket-addon",
  "version": "1.5.161",
  "description": "Porównuj ceny w czasie rzeczywistym bezpośrednio na stronach sklepów! Oszczędzaj z każdym kliknięciem dzięki wtyczce Net-Pocket.",
  "browser_action": {
    "default_title": "Net-Pocket Addon",
    "default_popup": "pages/popup.html",
    "default_icon": "assets/logged/icon-128.png"
  },
  "author": "aveneo",
  "background": {
    "page": "pages/background.html"
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "homepage_url": "https://net-pocket.com",
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "pages/index.js"
      ],
      "css": [
        "pages/index.css"
      ],
      "run_at": "document_idle"
    }
  ],
  "web_accessible_resources": [
    "assets/*",
    "icons/*"
  ],
  "incognito": "spanning",
  "permissions": [
    "scripting",
    "tabs",
    "<all_urls>",
    "storage"
  ],
  "minimum_chrome_version": "60",
  "icons": {
    "16": "assets/logged/icon-16.png",
    "19": "assets/logged/icon-19.png",
    "24": "assets/logged/icon-24.png",
    "32": "assets/logged/icon-32.png",
    "38": "assets/logged/icon-38.png",
    "48": "assets/logged/icon-48.png",
    "64": "assets/logged/icon-64.png",
    "96": "assets/logged/icon-96.png",
    "128": "assets/logged/icon-128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{5995a7f8-4224-4110-961d-a26f52a032b9}"
    }
  }
}